Guaranteed Asphalt NBS Specifications 2013

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NBS SPECIFICATIONS

J21 115 a – b 125 a – e 135 a – e 155 a – p

page 2 page 3 page 4 page 5-7

J31

100 page 8

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115 WARM ROOFS 115 a GuaraFLEX Asphalt (Warm Roofing)

Polymer modified asphalt warm roof system for new build or refurbishment (concrete decks).

115 b GuaraFLEX Asphalt (Warm Roofing)

Polymer modified asphalt warm roof system for new build or refurbishment (timber or metal decks).

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125 INVERTED ROOFS 125 a GuaraFLEX Asphalt (Inverted Roofing)

Polymer modified asphalt inverted roof system for new build or refurbishment (concrete decks with falls).

125 b GuaraFLEX Asphalt (Inverted Roofing)

Polymer modified asphalt inverted roof system for new build or refurbishment (concrete deck flat with no falls).

125 c GuaraFLEX Asphalt (Inverted Roofing)

Polymer modified asphalt triple protection inverted roof system for new build/refurbishment (concrete deck flat or to falls - total bonding).

125 d GuaraFLEX Asphalt (Inverted Roof Garden Systems)

Polymer modified asphalt warm roof system for new build or refurbishment (concrete decks) for roof gardens, podiums and the like, hard landscaping, brick/concrete planters, hard pavings.

125 e GuaraFLEX Asphalt (Inverted Green Roof System)

Polymer modified asphalt inverted roof system for new build or refurbishment (concrete decks) for green roofs, podiums and the like.

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135 COLD ROOFS 135 a GuaraFLEX Asphalt (Cold Roofing)

Polymer modified asphalt cold roof system for new build or refurbishment (concrete decks).

135 b GuaraFLEX Asphalt (Cold Roofing)

Polymer modified asphalt cold roof system for new build or refurbishment (timber or metal decks).

135 c GuaraFLEX Asphalt (Cold Roofing)

Polymer modified asphalt cold roof system for new build (concrete deck flat or to falls - total bonding).

135 d GuaraFLEX Asphalt (Buried roof garden uninsulated)

Polymer modified asphalt cold roof garden system for new build or refurbishment (concrete decks) for roof gardens, podiums and the like, hard landscaping, brick/concrete planters, hard pavings.

135 e GuaraFLEX Asphalt (Buried green roof uninsulated)

Polymer modified asphalt cold green roof system for new build or refurbishment (concrete decks) for green roofs, podiums and the like.

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155 PAVING - CAR PARKS COLD 155 A GuaraFLEX Asphalt (Internal Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (unheated) internal decks not subject to water run-off for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 B GuaraFLEX Asphalt (Internal Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (heated) internal decks, not subject to water run-off for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 C GuaraFLEX Asphalt (Internal Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (unheated) internal decks, subject to water run-off for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 D GuaraFLEX Asphalt (Internal Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (heated) internal decks, subject to water run-off for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 E GuaraFLEX Asphalt (External Waterproof Paving) 2/3/4/5/6 Polymer modified asphalt system for new build or refurbishment (concrete

decks). Uninsulated external decks for multi-storey roof top car parks, for cars and light commercial vehicles, maximum wheel load 2 tonne per axle.

155 F GuaraFLEX Asphalt (External Waterproof Paving) 2/3/4/5 Polymer modified asphalt system for new build or refurbishment (concrete

decks). Uninsulated external elevated decks for heavy commercial vehicles, maximum wheel load 10.5 tonnes per axle.

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155 RAMPS - COLD 155 G GuaraFLEX Asphalt (Internal/External Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). External ramps not exceeding 1 to 10 gradient, uninsulated for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 H GuaraFLEX Asphalt (Internal/External Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). External ramps not exceeding 1 in 10 gradient for heavy commercial vehicles, maximum wheel load 10.5 tonnes per axle.

155 WARM ROOF INSULATED CAR PARKS 155 I GuaraFLEX Asphalt (Internal/External Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 J GuaraFLEX Asphalt (Internal/External Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for heavy commercial vehicles, maximum wheel load 10.5 tonnes per axle.

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155 WARM DECK - INSULATED DRY SYSTEM 155 K GuaraFLEX Asphalt (Internal/External Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for car and light commercial vehicles, maximum wheel load 2 tonnes per axle - DRY FAST TRACK SYSTEM.

155 L GuaraFLEX Asphalt (Internal/External Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for heavy goods vehicles, maximum wheel load 10.5 tonnes per axle - DRY FAST TRACK SYSTEM.

155 M GuaraFLEX Asphalt (Covered Insulated Waterproof Paving) Polymer

modified asphalt system for new build or refurbishment (concrete decks). Covered insulated decks for cars and light commercial vehicles, maximum wheel load 2 tonnes per axle – DRY FAST TRACK SYSTEM.

155 COLD ROOFS, BALCONIES, PODIUMS 155 N GuaraFLEX Asphalt (Cold Roof Waterproof Paving)

Polymer modified asphalt cold roof system for new build or refurbishment (concrete decks), podiums, pedestrian access areas, balconies, etc.

155 WARM ROOFS, BALCONIES, PODIUMS 155 P GuaraFLEX Asphalt (Warm Roof Waterproof Paving)

Polymer modified asphalt warm roof system for new build or refurbishment (concrete decks), podiums, pedestrian access areas, balconies, etc.

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J31 100 INVERTED & COLD ROOFS, BALCONIES, PODIUMS 100 GuaraTEC Rubberised Hot Melt (Fully Bonded Waterproofing)

Polymer modified rubberised hot melt roof system for new build or refurbishment (concrete, timber or metal decks), podiums, pedestrian access areas, balconies, etc.

Clauses in NBS Format

Product Information

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INTERSTITIAL CONDENSATION

220 AVOIDANCE OF INTERSTITIAL CONDENSATION IN WARM AND INVERTED ROOFS

Interstitial condensation risk of roof construction: Assess as recommended in BS 6229

Basic design data:

Outdoor notional psychometric conditions, winter:

Temperature: -5oC

Relative humidity: 90%

Vapour pressure: 0.36 kPa

Duration: 60 days

Outdoor notional psychometric conditions, summer:

Temperature: 18oC



Duration: 60 Days

Indoor notional psychometric conditions:

Temperature: 20oC



Winter interstitial condensate (warm roof):

Calculated amount (maximum): 0.35 kg/m2

Calculated annual net retention: Nil

Vapour control layer: If necessary, provide a suitable membrane so that damage

and nuisance from interstitial condensation do not occur

225 AVOIDANCE OF INTERSTITIAL CONDENSATION IN WARM AND INVERTED ROOFS

Risk of interstitial condensation in roof construction: Assess in accordance with BS

5250, annex D

Vapour control layer: If necessary, provide a suitable membrane so that damage

and nuisance from interstitial condensation do not occur


Product Information

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280a GENERAL DESIGN REQUIREMENTS

All works must comply with all current relevant standards, codes of practice, and the

Building Regulations to provide a secure, free draining and completely weathertight

roof, including but not limited to:

BS 6229

Flat roofs with continuously supported coverings, code of practice

BS 5250

Code of practice for control of condensation in buildings

BS EN 1991-1-4 Eurocode 1

Actions on structures, general actions, wind actions

BS EN 12056-3

Gravity drainage systems inside buildings, roof drainage, layout and calculation

BS EN ISO 6946

Building components and building elements, thermal resistance and thermal

transmittance, calculation method

The Building Regulations Approved Document Part L1 or Part L2

Conservation of fuel and power

The design must take account of all structural factors to ensure that the waterproof

covering is able to accommodate the effect of movement in order to avoid stress or

deformation under these conditions. The waterproofing components’ resistance to

dead and imposed loading must be assessed to avoid failure of the component

and/or reduction in performance. Where resistance is deemed to be inadequate,

suitable measures to mitigate load intensity will need to be considered.

Insulation must be incorporated to avoid cold bridges as determined by building

control and/or appointed design professional.

The design must ensure that the continuity of the waterproof covering is maintained

for a vertical height of at least 150mm above the finished roof level at all abutments,

parapets, etc.

The building owner or their appointed design professional must have satisfied

themselves that the roof structure and deck are suitable to receive the dead load of

the proposed specification.

It is strictly the responsibility of the client and/or their design professional to ensure the

compliance of the proposed specification with all relevant Building Regulations by

consultation with Building Control. In the event of any doubt about the interpretation

or application of the Building Regulations in relation to any particular new build or

refurbishment works, clarification must be sought directly from Building Control.

310a DRAINAGE OUTLETS

Type: Aluminium

- Manufacturer: Guaranteed Asphalt Ltd

- Product reference: GuaraDRAIN (to suit drainage design)

- Accessories: Select from flat grate, terrace grate, extension piece

Type: GuaraDRAIN rainwater outlets. Refer to Guaranteed Asphalt

Technical Services (tel. no: 020 7277 8773) for type to suit

location, bore to be specified. Outlets to be generally fixed at

maximum 15m centres.


Product Information

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320a PRIMER

Type: For flat decks - fully bonded upstands and slopes over

approximately 10o and all metal surfaces in contact with the

GuaraFLEX System.

Manufacturer: Guaranteed Asphalt Limited (as above).

Product reference: GuaraPRIMER Bitumen Primer - brush, roller or spray applied

the rate of 6-8m2 per litre and allowed to dry to the touch.

330 TIMBER FOR TRIMS ETC

Quality: Planed. Free from wane, pitch pockets, decay and insect

attack (except ambrosia beetle damage).

Moisture content at

time of covering maximum: 22%

Preservative Treatment: As recommended by mastic asphalt manufacturer.

345 EDGE TRIMS

Type: GRP

Manufacturer: Guaranteed Asphalt Limited

Product reference: Asphalt section GRP edge trim.

Colour: Consult with Guaranteed Asphalt for recommendations and

details.

Length (maximum): 3m


Product Information

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353A WATERPROOF COATINGS

Type: Hot melt liquid applied formulation combined with integral reinforcements and

protection sheet

Manufacturer: Guaranteed Asphalt Ltd

System reference: GuaraTEC Waterproofing System

Certification: GuaraTEC BBA certification

353-01 PRIMER

Type: Solvent based low viscosity bitumen primer, black in colour


- Product Reference: GuaraPRIMER

- Density: 0.89 kg/litre +/- 0.02

- Packaging: 25 litre drums

353-05 COATING

Type: Hot melt rubberized bitumen comprising 100% solids and containing modified

bitumen, synthetic rubbers and wood ash/limestone fillers


- Product Reference: GuaraTEC

- Density: 1230 kg/m3

- Recycled content: 25%

- Packaging: Polythene wrapped 25kg cakes, individually packed in 250 x 200

x 460mm cardboard boxes

- Approximate coverage: 6.5 kg/m2 subject to the nature of the surface

353-06 REINFORCEMENT

Type: Spun bonded polyester fabric

- Product reference: GuaraFLEECE

- Performance data: Tensile strength – longitudinal 60 N/50mm, transverse 60

N/50mm

- Air permeability: 3600 l/m2s (200Pa)

- Roll size: Width 1.02m x 200m length, thickness 0.5mm

353-07 PROTECTION SHEET

Type: Glass/polyester reinforced SBS modified bitumen membrane

- Product reference: GuaraFELT protection sheet

- Colour: Black / Sanded / Mineral finish (dependent on buried or shown work)

380 MOVEMENT JOINTS

Manufacturer: Trelleborg Sealing Profiles, International House, Stafford

Park, 11 Telford GB-West Midlands, TF3 3AY

Product reference: Consult with chosen manufacturer for

recommendations and details.

Contact: Expansion Joints Ltd, Unit 3a Fatherford Farm,

Okehampton, Devon, EX20 1QQ


Product Information

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391A SUB SURFACE DRAINAGE LAYER

Type: Geo-composite unit, comprising a non-woven geotextile filtration layer that

is bonded to a high-density polyethylene (HD-PE) cuspated core


- Product reference: GuaraMAT

- Performance data: Compressive strength 700 kPa (core), CBR puncture

resistance 1.5 kN (fabric)

- Roll size: Width 1m x 100m length, thickness 6mm

393A TERMINATION BAR

Type: Aluminium


- Product reference: Termination bar

- Size: 1500 mm

394A SEALANT

Type: Low modulus sealant


- Product reference: Fixall mastic sealant

- Application: To seal the connection between roofing membranes to all

common building materials

- Packaging: 290ml cartridge

- Colour: Grey

395a VAPOUR CONTROL LAYER

Type: High Performance Bitumen sheet.


Product reference: GuaraFELT CP membrane. Consult with Guaranteed Asphalt

for recommendations and details.

First layer: GuaraFELT 2mm high performance bitumen membrane.

Second layer: Not required.


Product Information

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395b VAPOUR CONTROL LAYER

Type: High Performance Bitumen sheet.


Product reference: GuaraFELT CP SUPER membrane. Consult with Guaranteed

Asphalt for recommendations and details.

First layer: GuaraFELT Super 4mm high performance bitumen membrane.

Second layer: Not required.

410 ADVERSE WEATHER

Do not apply coatings

- In wet conditions or at temperatures below 5oC, unless otherwise permitted by

coating manufacturer

- In high wines (speeds >7 m/s), unless adequate temporary windbreaks are

erected adjacent to working area

- Unfinished areas of roof: Keep dry

420a RIGID POLYISCYANURATE FOAM (PIR) ROOF BOARD WARM ROOF INSULATION

Material: Rigid polyisocyanurate foam insulation board.


Product reference: Guaranteed PIR board.

Thickness: Consult with Guaranteed Asphalt Technical Services for advice

on specific projects. The board thickness will depend on the u-

value requirements.

420b RIGID POLYISOCYANURATE FOAM (PIR) ROOF BOARD WARM ROOF INSULATION

Material: Rigid polyisocyanurate foam insulation board.


Product reference: Guaranteed PIR tapered board.



value requirements.

430a WARM ROOF INSULATION

Material: PUR composite insulation board.


Product reference: GuaraBOARD composite PUR board.



value requirements.


Product Information

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430b WARM ROOF INSULATION

Material: PUR composite insulation board.


Product reference: GuaraBOARD composite tapered board.



value requirements.

430c WARM ROOF INSULATION

Material: Cellular glass insulation board.


Product reference: GuaraCEL cellular glass insulation board.



value requirements. The board type will be dependent on the

compressive strength requirements.

430d WARM ROOF INSULATION

Material: Cellular glass insulation board.


Product reference: GuaraCEL tapered cellular glass insulation board.



value requirements.

430e (1) PROTECTION FOR INSULATION ON INSULATED VEHICLE DECKS (DRY SYSTEM)

Material: GuaraSCREED design mix polymer modified asphalt concrete.

Minimum 40mm thickness where falls are provided in the

substrate. Where falls are not provided in the substrate but are

required, minimum thickness 40mm, maximum thickness as

required to provide falls of 1 in 100.


Product Information

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440a EXTRUDED POLYSTYRENE INVERTED ROOF INSULATION/PROTECTION

Material: Extruded polystyrene board.


Product reference: Guaranteed extruded polystyrene board.

Grade - roofing/

vehicle decks: Consult with Guaranteed Asphalt Technical Services for advice

on specific projects.

Edges: Consult with Guaranteed Asphalt Technical Services for advice


Integral topping: Consult with Guaranteed Asphalt Technical Services for advice


Thickness: Consult Guaranteed Asphalt Technical Services for advice on

specific projects. The board thickness will depend on the type

and u-value requirements.

440a (1) PROTECTION FOR INSULATION ON INSULATED VEHICLE DECKS/ROOF GARDENS

(WET SYSTEM)

Product: Lytag concrete or similar - minimum grade 20.

Laying: Minimum 100mm thick, with A142 mesh to engineers design

over insulation.

440a(2) PROTECTION FOR WATERPROOFING

Product: Minimum 50mm cementitious screed.

Laying: Flat or to falls, to engineers design.

440a(3) PROTECTION FOR ASPHALT MEMBRANE. TO RECEIVE PAVING SLABS ON

SUPPORTS. PODIUMS, BALCONIES, PEDESTRIAN AREAS & THE LIKE.

Product: Extruded polystyrene. Thickness to be determined by installer.

Laying: Loose, close butt-joints over and including geo-textile filter

membrane as clause 440b.

440b FILTER MEMBRANE

Product: GuaraGLASS Geo-textile non-woven fleece.

Laying: Loose over horizontal asphalt, 150mm laps turning 100mm up

abutments.

440c PERMEABLE MEMBRANE

Product: Guaranteed water resistant vapour permeable membrane.

Laying: Loose over insulation, 300mm laps sealed using Guaranteed

lap seal adhesive.


Product Information

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453A APPLYING COAT

Cut excess wrapping from black with a sharp knife or scissors.

Heat in purpose made oil or air jacketed melter in accordance with operating

instructions and manufacturer’s guidelines.

Temperature of compound: Operating temperature ranges from 162oC to 232oC.

Do not overheat.

- Normal operating temperature range from 177oC to 218oC. Do not heat

above 232oC

Application: Full over whole surface by squeegee.

460a STONE BALLAST

Type: Washed, no fines. Grade 20 to 40mm.

Laying: Thickness 50mm, laid loose over membrane.

462A GENERAL NOTES/REQUIREMENTS

Prior to installation, the project specification, associated drawings, and

manufacturer’s installation instructions for all materials should have been studied

and understood, and must be followed.

These proposals relate to the roof waterproofing area only. They do not include

associated work to be carried out by other trades, which may be required to

complete a satisfactory refurbishment.

All preliminary work including alterations to detailing, where applicable, is

complete and satisfactory.

Installation may only be carried out by GuaraTEC approved operatives, who

have sufficient training for each specialist system and awareness to work safely,

under the direction of qualified supervisors.

Where applicable, all operatives must be able to produce their individual ID card

upon demand, whilst installing the system for which they are approved. These

should be available for inspection at all times.

Contractors are advised to visit site when deemed necessary and make

themselves fully acquainted with the extent of the works and the conditions under

which they are to be executed.

It is the sole responsibility of the contractor to ensure that all roofing works shall be

installed in accordance with the appropriate sections of all current relevant

codes of practice, Building Regulations, and manufacturer’s installation

instructions for product supplied by the company.


Product Information

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462A GENERAL NOTES/REQUIREMENTS (contd…)

Outlet/s shall be set at a level to compensate for the thickness of the outlet flange

and avoid any check against the flow of water. All outlets are to include a

clamping ring to secure the waterproof covering. Outlets and apertures must be

protected from ingress of debris to prevent blockage of downpipe/s; protection

should be removed during non-operating periods.

Where applicable, all roof services and plant, access walkways, platforms, pipes

etc, must be mounted on appropriate support systems providing at least 500mm

clearance above the roof membrane, in order to facilitate access for future

inspection/maintenance or repair.

The contractor must ensure that satisfactory aesthetic appearance of the

completed works is achieved.

463A SITE INSPECTIONS

Site inspections will be made by Guaranteed Asphalt Ltd during the works to ensure

that the installation is executed in accordance with the GuaraGUARD warranty

requirements and current codes of practice. A site visit report from, along with

supporting photographs will be issued to the client/contractor following each

inspection. The reports will identify and monitor the works observed during the

inspections and will, where applicable, make recommendations for appropriate

rectification which the contractor is to undertake in order to satisfy the warranty

requirements.

464A HEALTH & SAFETY

It is strictly the contractor’s responsibility to ensure that all works are executed in

accordance with current health and safety legislation. Guidance may be taken from

HSE publication reference: HSG33-Health and Safety in Roof Work.

Safety scaffolding, the location of rubbish skips, access ladders etc, should be agreed

with the client/principal contractor and be in accordance with current health and

safety regulations.

Product data and MSDS documents are available for all relevant products supplied

by Guaranteed Asphalt Ltd.

465 PRECAST CONCRETE PAVING SLABS

Precast concrete: To BS 7263-1 hydraulically pressed.


Product reference: Consult with Guaranteed Asphalt for recommendation

&details.

Colour/Finish: Consult with Guaranteed Asphalt for recommendations

&details.

Size: Consult with Guaranteed Asphalt for recommendations &

details.


Product Information

P a g e 11 | 27

465a TIMBER DECKING (SUBSTRATE TO FALLS)

600 x 600 x 50mm hydraulically pressed paving slabs, laying loose over permeable

membrane.

465b TIMBER DECKING (SUBSTRATE FLAT WITHOUT FALLS)

600 x 600 x 50mm hydraulically pressed paving slabs, laying loose over permeable

membrane, in-filled with ballast (460a) around slabs.

466a STORING OF MATERIALS

Materials must be stored carefully on a clean dry surface, under cover and raised

clear of the ground.

Roll materials must be stored on end.

The load-bearing capacity of the structure must be checked if material is to be stored

at roof level.

Only sufficient materials for the day’s schedule should be taken out of store, or

uncovered, and placed close to the area being worked.

470a SURFACE PROTECTION

PAVING TILES

Type: Porous concrete.


Product reference: Guaranteed porous concrete tiles.

Colour/finish: Consult with Guaranteed Asphalt for recommendations and

details.

Size: Consult with Guaranteed Asphalt for recommendations and

details.


Product Information

P a g e 12 | 27

495 SURFACE PROTECTION

SOLAR REFLECTIVE PAINT


Product reference: Guaranteed solar reflective paint.

520 INCOMPLETE WORK

Daywork joints in warm roof and edges of phased roofing: Adequately protect and

fully weathertight.

530 APPLYING PRIMERS

Application: To upstands and slopes over approximately 10o, and pipes etc.

Surface coverage: Even and full.

Coats: Fully bonded. Allow volatiles to dry off thoroughly between

coats.

545 APPLYING SOLAR REFLECTIVE PAINTS

Application: To exposed asphalt.

Surface coverage: Even and full.

610a PREPARATION

SUITABILITY OF SUBSTRATES

Generally:

- Secure, even textured, clean and dry and free from frost.

- Horizontal surfaces: To even falls/flat within tolerances.

Preliminary work: Complete - including:

- Formation of upstands and kerbs

- Penetrations/outlets

- Chases (not less than 10 x 25mm)

- External angles - chamfered where required to maintain full thickness.

Moisture content and stability:

- Must not impair integrity of roof.

610b PREPARATION

Sweep clean and remove all standing water. Make good as necessary to

provide a base free from ridges, hollows and indentations.

Sweep clean and remove all standing water. Make good as necessary to

provide a clean base free from ridges, hollows and indentations, dried ready

to receive primer.

610c GuaraSCREED (WARM ROOFS)


Product Information

P a g e 13 | 27

Polymer modified design mix mastic asphalt screed, nominal 1:80 fall.

Screed thickness; Minimum - nil

Maximum - as required

Laying: One or more layers on GuaraFELT separating/bonding layer.

610d GuaraSCREED FOR INVERTED ROOFS


Screed thickness: Minimum - nil.

Maximum - as required.

Laying: One or more layers on GuaraFELT separating/bonding layer.

610d (1) GUARASCREED FOR CAR PARK DECKS/PODIUMS - COLD ROOF DECKS


Screed thickness: Minimum - nil.


Laying: One or more layers, over GuaraFLEX R asphalt waterproofing.

610e GUARASCREED SURFACE PROTECTION FOR COLD ROOFS, NO INSULATION, FLAT

Screed thickness: Nominal 25mm thickness.

Laying: Single layer over asphalt waterproofing.

610f GUARASCREED SURFACE PROTECTION FOR COLD ROOFS WHERE FALLS OR

ADDITIONAL FALLS ARE REQUIRED

Screed thickness: Laid to falls. Minimum - 5mm thickness.


Laying: One or more layers over asphalt waterproofing.

610g GUARASCREED FINISH/SURFACE PROTECTION WHERE FALLS OR ADDITIONAL

FALLS ARE REQUIRED

Polymer modified design mix asphalt screed.

Screed thickness: Minimum – 10mm.

Maximum – as required.

Laying: In one or more layers over asphalt waterproofing.


Product Information

P a g e 14 | 27

610h SUITABILITY OF SUBSTRATE (to receive GuaraTEC)

Suitability of base: Ensure that the structural tolerances of the structure which the

works are being installed are within permissible deviation of a level surface and

satisfactory to receive the proposed specification. The existing surface is to be

even and free from any irregularities that may compromise the works and/or

performance. It is the responsibility of the appointed contractor to verify and

report any deficiencies so that they can be corrected prior to commencing with

the application.

Screed compatibility: Structural screed is susceptible to absorbing moisture which

may compromise the integrity of the bond caused by the installation at high

temperature and is to be avoided. Further guidance should be sought from

Guaranteed Asphalt Ltd’s technical services, if applicable.

Substrates generally: Secure, clean, dry, smooth, free from frost, contaminants,

voids and protrusions.

Preliminary work: Complete including:

- Formation of upstands, kerbs, box gutters, sumps, grooves, chases and

expansion joints

- Fixing of battens, anchoring plugs/strips

Moisture content and stability of substrate: Must not impair roof integrity

Acceptable methods of drying of roof areas, where required, must be agreed

with the client prior to the commencement of works.

620a REMOVE EXISTING COVERING (ANY TYPE)

Remove all existing coverings down to concrete/screed/timber base or metal

decking. Brush off and make good as necessary to provide a clean, dry base free

from ridges, hollows and indentations.

Note: Prior to commencement of the works, core samples should be taken to ensure

the existing concrete/screed/timber or metal deck is suitable for re-use.

Consult Guaranteed Asphalt for recommendations and details.

630a PREPARATION

OVERLAY EXISTING COVERINGS

Cut out and make good all defects in existing covering. Remove all existing

coverings to upstands, kerbs and the like. Prepare surfaces to receive new. Brush off

and make good as necessary to provide a base free from ridges, hollows and

indentations.

Note: Consult with Guaranteed Asphalt for suitability of existing installation for

overlay.

640 INSTALLING TIMBER FOR TRIMS

Fasteners: Sherardized steel screws.

Fixing centres (maximum): 600mm


Product Information

P a g e 15 | 27

650 ADHESION TESTS

Requirement: Carry out advance bond tests to determine suitability.

Execution of test: Apply a small amount of membrane by squeegee onto the test

area and allowing it to cool completely. Cut a triangular shaped incision through the

membrane in the centre of the test area. If this triangular area of membrane can be

peeled from the substrate easily then the substrate is not ready. If it is not possible to

pull the membrane away without distorting it, then the bond is deemed to be

satisfactory. Temporarily apply a piece of protection sheet over the test area to keep

dust off, removing it only when the main material application takes place. The test

material will reactivate and blend in with the subsequent application.

Test results: Proceed with membrane installation if satisfactory.

655 APPLYING PRIMERS/CONDITIONERS

Coverage per coat (minimum):

- Asphalt/Concrete (wood float or similar): 8-16 m2/litre

- Metal e.g. base plats/metal angles, not applicable, degrease thoroughly

- Dilute: 50/50 with white spirit (if required)

- Surface coverage: Even and full

- Application: Apply by brush, roller or spray and allow to dry completely.

Surfaces must be clean and free from all oil, grease, dirt, dust and loose

debris. On metal surfaces all loose rust should be removed using a wire

bristled brush, and where advanced signs of corrosion are evident, these

areas should initially be treated with a rush inhibitor. Bituminous primer is

resistant to rainfall within 20-30 minutes of its application.

655a APPLICATION OF ROOF COATINGS

Apply product to suitably prepared substrate by squeegee, in two layers of total

(nominal) thickness of 6mm (not including protection sheet), reinforced with

GuaraFLEECE (where appropriate).

- GuaraFLASH is to be fully bonded into the first 3mm coat of membrane and

brushed in with a soft broom or brush. Side and end laps 75mm (also sealed

with GuaraTEC).

- Fully bond GuaraFELT protection sheet onto second 3mm coat of membrane,

with 100mm side and end laps sealed by gas torch (laps must be kept free of

GuaraTEC).

- Thickness: Monitor by taking regular thickness tests using a depth gauge, to

ensure consistent and correct thickness and coverage of membrane. Seal

pinhole after removal of gauge by applying direct pressure.

- Continuity: Maintain full thickness of coatings around angles, junctions and

features.

- Rainwater outlets: Form with watertight joints.

- Drainage systems: Do not allow liquid coatings to enter piped rainwater or

foul systems.


Product Information

P a g e 16 | 27

660a PREPARATION JOINTS IN PLYWOOD SUBSTRATES

Cover Strip: Lay centrally over substrate joints before laying vapour control layers or

coverings. Adhere to substrate with bonding compound, along edges

only.

660b PREPARATION FOR HIGH STRESS AREAS - HEAVY GOODS VEHICULAR ACCESS -

CONCRETE DECKS

Laying: Bitumen primer on concrete base to receive waterproofing

layer/layers.

670a LAYING VAPOUR CONTROL LAYER

Attachment: Partial bonding.

Appearance on completion: Flat with no wrinkles.

Laps: (100mm) Seal using method recommended by

Guaranteed Asphalt Limited.

Upstands/kerbs and other

penetrations: Enclose edges of insulation. Fully seal at abutment by

bonding or taping.

680a INSTALLING WARM ROOF INSULATION

Setting out:

- Long edges: Fully support and run at right angles to structure.

- End edges: Adequately support.

- Joints: Butt together.

- End joints: Stagger

- Bedding: Partial bond to ensure adequate restraint with

suitable bonding compound.

Mechanical fixing/

bonding: Consult with Guaranteed Asphalt for recommendations and

details.

Completion: Boards must be in good condition, well-fitting with no

substantial springing, flexing or rocking.


Product Information

P a g e 17 | 27

SEPARATING LAYERS

695a GuaraFELT CP super, high performance bitumen felt membrane.

Laying: Loose with 100mm sealed laps.

695b GuaraFELT CP, nominal 2mm thick high performance bitumen felt membrane.

Laying: Loose with 100mm sealed laps.

695c GuaraFELT CP, nominal 2mm thick high performance bitumen felt membrane.

Laying: Torch bonding to base with 100mm laps.

695d GuaraFELT CP super, high performance bitumen felt membrane.

Laying: Torch bonding to base with 100mm laps.

695e GuaraSCRIM bitumen impregnated scrim tissue.

Laying: Loose laid over primed concrete base with 100mm laps.

695f Guaranteed overlay board, 13mm thick, one face bitumen coated.

Laying: Loose or spot bonded over existing coverings, close butt jointed,

bitumen face uppermost.

695g GuaraGLASS glass fibre tissue.

Laying: Loose laid over concrete base with 100mm laps.

695h GuaraTEC fully bonded layer, nominal 3mm GuaraTEC rubberised rubber, on

a primed deck

710 DELIVERY

Condition of mastic asphalt as delivered to site: Hot-prepared.

(or)

720 DELIVERY

Condition of mastic asphalt delivered to site:

Hot prepared OR Blocks - re-melt on site. Temperature of material not to

exceed 230oC.

730 ON-SITE TRANSPORTING

Transport distances: Minimise to avoid excessive cooling of molten mastic asphalt.

Buckets, barrows or dumpers used for mastic asphalt: Line with minimum quantity of

fine inert dust. (Use silica or similar acid resisting dust where acid resisting mastic

asphalt is being used).

735 LOCALIZED HEATING

Blowlamps and gas torches: Use only types with controlled gradual heating during

laying, removal and repair of mastic asphalt.


Product Information

P a g e 18 | 27

770A SKIRTINGS AND UPSTANDS

Preparation: Prepare the substrate to provide an acceptable base for

waterproofing.

- Prime substrate with the specified primer (as clause 530 A)

- Bedding: Bonded into the first 3mm coat of membrane and gently smoothed

in by gloved hand

- Side and end laps: 75mm (also sealed with GuaraTEC)

- Bond: Continuous over whole surface, with no air pockets, apply second

3mm coat fully encapsulating the reinforcement. A protection sheet of

GuaraFELT is laid over the completed GuaraTEC membrane.

Flashing and detail work:

- The design should ensure that the continuity of the waterproof covering is

maintained for a vertical height of 150mm above the finished roof level at all

abutments, parapets etc. Guaranteed Asphalt Ltd cannot take responsibility

in the event of water ingress over and above the termination of our

waterproofing.

- Additional fixing of membranes: Where applicable, mechanically fix

termination bar at 300mm (max) centres plated at the top edge of the

flashing detail, sealed with GuaraSTICK.

In any situation where a structural expansion detail is to be incorporated into the

GuaraTEC waterproofing and the percentage movement is less than 50%, the

contractor is to install the detail as per the relevant nominal width of joint. Should any

expansion joint detail require a degree of movement in excess of 50%, consult with

the coating manufacturer for guidance.

Leadwork: Where applicable, code 4 or 5 lead is required for flashing of details.

Maximum lengths and girth should be established and carried out in accordance

with the Lead Sheet Association recommendations.

Seal the connection between roofing membranes to all common building materials:

Apply GuaraSTICK polymer sealant to all exposed edges, termination bars, flashings,

connections with roof penetrations etc. Surfaces must be dry, clean and free from

contaminants.

Additional requirements: The contractor is to install all details in a manner to comply

with current quality assessment recommendations for the installation of the specified

system. Should any detail arise where it is not clear how this can be achieved, the

contractor is to seek advice and approval for all proposals from Guaranteed Asphalt

Ltd before completing the works.


Product Information

P a g e 19 | 27

740 APPLICATION

Laying mastic asphalt: Standard to BS 8218.

Mastic asphalt coats:

- Apply in bays to even thickness. Do not use re-heated asphalt.

- Full thickness: Maintain around external angles, at junctions and tuck-ins.

- Fillets at internal angles: Solid in tow layers, fully fused to asphalt coating.

- Previously laid coats: Protect whilst exposed.

- Successive coats:

Apply without delay and within same working period.

Stagger joints between bays in consecutive coats (minimum): 75mm.

- Finish: Even surface, smooth and free from imperfections.

- Completion: During final floating operation, whilst asphalt is still warm, apply

sand to horizontal surfaces and rub-in well using wooden float.

Blowing:

- Reheat if necessary, pierce and make good affected areas.

- Condition of contact edges of previously laid bays: Warm and clean.

- Condition on completion: Fully sealed, waterproof and free draining.

740a APPLICATION (NEW BUILD/REFURBISHMENT) OVER GUARASCREED

Laying: GuaraFLEX R mastic asphalt.

Nominal 20mm thickness, laying over GuaraSCREED.

Surface finish: Sand rubbed.

740b APPLICATION (NEW BUILD/REFURBISHMENT) OVER SCREEDS OTHER THAN

GUARASCREED


Nominal 20mm thickness in 2 layers on and including Guarafelt

separating layer.


740c APPLICATION (NEW BUILD/REFURBISHMENT) TO FLAT DECKS WITH NO FALLS


Nominal 20mm thickness in two layers on and including

GuaraFELT separating layer.


740d APPLICATION (NEW BUILD/REFURBISHMENT) OVER INSITU CONCRETE/CONCRETE

FLAT/TO FALLS/SCREEDED DECK TO FALLS/RAMPS

Laying: GuaraFLEX R mastic asphalt in one layer on GuaraFELT

separating layer/bonding layer or GuaraSCREED.

Surface finish: Float finished/sand rubbed if left exposed.


Product Information

P a g e 20 | 27

740d (1) APPLICATION (NEW BUILD/REFURBISHMENT) OVER INSITU CONCRETE FLAT/TO

FALLS/SCREEDED DECK TO FALLS

Laying: GuaraFLEX PR standard mastic waterproofing in one

coat on GuaraFELT separating layer.

Surface finish: Float finished.

PAVING/PROTECTION LAYERS

740e APPLICATION (NEW BUILD/REFURBISHMENT) PAVING PROTECTION LAYER

Laying: GuaraFLEX R mastic asphalt, nominal 15mm thickness with 15-

20% additional coarse aggregate over GuaraFLEX R asphalt

waterproofing.

Preparation: Sweep clean and dry new asphalt waterproofing.

740f APPLICATION (NEW BUILD/REFURBISHMENT) STANDARD PAVING/PROTECTION

LAYER/WEARING COURSE

Laying: GuaraFLEX PP mastic asphalt over GuaraFELT separating layer

waterproofing or GuaraSCREED/asphalt or concrete.

Surface finishes: Sand rubbed, smooth finish, crimped with indenting roller, pre-

coated chippings rolled in at the rate of 7-10 kilos per m2,

nominal size 14 or 20mm.

740f (s) APPLICATION (NEW BUILD/REFURBISHMENT) STANDARD PAVING/PROTECTION


Laying: GuaraFLEX Standard paving mastic asphalt over GuaraFELT

separating layer waterproofing or GuaraSCREED/asphalt or

concrete.




740g APPLICATION (NEW BUILD/REFURBISHMENT) HARDGRADE PAVING/PROTECTION


Laying: GuaraFLEX PPH mastic asphalt over GuaraFELT separating layer

waterproofing or GuaraSCREED/asphalt or concrete.





Product Information

P a g e 21 | 27

740g(s) APPLICATION (NEW BUILD/REFURBISHMENT) HARDGRADE PAVING/PROTECTION


Laying: GuaraFLEX Hard paving mastic asphalt over GuaraFELT


concrete.




740g(f) APPLICATION (NEW BUILD/REFURBISHMENT) HARDGRADE PAVING/PROTECTION


Laying: GuaraSCREED floor screed mastic asphalt over GuaraFELT


concrete.




750a UPSTANDS – GuaraFLASH U&T

Installing: Flexible upstands, coverings to kerbs and the like.

Setting out: Neatly with carefully formed junctions.

Application: First layer

GuaraFLASH U underlay torch bonded to primed base, terminating

150mm above horizontal finishes or continued over the top of the

upstand. Torch bonding 100mm onto GuaraFELT CP/CP Super at the

base prior to laying horizontal asphalt. 100mm wide vertical and

horizontal laps.

Second layer

GuaraFLASH T torch bonded to GuaraFLASH underlay with 100mm

vertical and horizontal laps, terminating 150mm above horizontal

finishes or continued over the top of the upstand.

750b TERMINATION

- To brick, block, concrete walls.

- Nonferrous metal cover flashing wedged into 10 x 25mm deep chase, pointed

with suitable mastic on completion. Or suitable termination bar.

- Dressing minimum 50mm over upstand detail.


Product Information

P a g e 22 | 27

750b (1) ANGLE FILLET

2 coat internal angle fillet, nominal 45mm on face to all concrete brick or

block work walls and abutments.

Preparation: As clause 320a.

750b (2) FILLET STRIP

Flexible fillet strip – 15mm thick by 45mm wide torch-on preformed strip

bonded to asphalt base layer and GuaraFLASH base layer at all abutments.

750c INSULATED UPSTANDS

750c (1) Material (Warm Roof): Guaranteed plywood faced composite board.

Material (Inverted Roof): Guaranteed Extruded Polystyrene Board.

Manufacturer: Guaranteed Asphalt Limited.

Product reference (Warm Roof): GuaraTHERM composite board.

Product reference (Inverted Roof): GuaraBOARD extruded polystyrene.

Thickness: Consult with Guaranteed Asphalt Technical Services for

advice on specific projects. The board thickness and type will

depend on the u-value requirements.

750c (2) FIXING INSULATED UPSTANDS (INVERTED ROOFS OR WARM ROOFS)

750c (2)1 Type (Inverted Roof): Guaranteed extruded polystyrene board, spot bonded

with lo-modulus mastic adhesive over GuaraFLASH T.

750c (2)2 Type (Warm Roof): GuaraTHERM composite board, bonded or

mechanically fixed to vapour barrier.

750c (3) PROTECTION (INVERTED ROOFS)

0.7mm aluminium sheet, once bent 75mm leg at the base.

750c (3)1 FIXING (INVERTED ROOFS)

Free standing against vertical insulation with 75mm leg onto permeable

membrane, secured at the base with 20-40mm ballast or paving slab.

750c (4) COVER APRON (INVERTED ROOFS)

Aluminium sheet, three times bent, two irregular angles, one welted edge,

100mm laps.


Product Information

P a g e 23 | 27

750c (4)1 FIXING

Wedging into 10 x 25mm deep chase, pointing with high modulus one part

polysulphide mastic. Dressing 50mm over metal upstand protection, securing

with secret clips into welted edge. Clips fixed to upstand with self-tapping

screws.

750(5) WATERPROOFING FOR INSULATED UPSTANDS (WARM OR INVERTED ROOFS)

Installing: Flexible upstands, coverings to kerbs and the like.

Setting out: Neatly with carefully formed junctions.

Application: First layer

GuaraFLASH U underlay, torch bonded to primed base,

terminating 150mm above horizontal finishes or continued over

the top of the upstand. Torch bonding 100mm onto GuaraFELT

CP/CP Super at the base prior to laying horizontal asphalt.

100mm wide vertical and horizontal laps.

Second layer

GuaraFLASH U self-finish for inverted roofs and GuaraFLASH T for

warm roofs, torch bonded to GuaraFLASH underlay with

100mm vertical and horizontal laps, terminating 150mm above

horizontal finishes or continued over the top of the upstand.

750d GUARAFLEX R ASPHALT UPSTANDS (OPTIONAL)

750d(1) UPSTANDS/DRIP APRONS/COLLARS TO PIPES AND THE LIKE (NOT EXCEEDING

300MM HIGH)

13mm thick, 2 coat GuaraFLEX R on primed brick or concrete upstands, angle

fillet at base, tuck into chase at top/fair edge at top.

Surface Protection: Guaranteed solar reflective paint as clause 495 and 545

to exposed asphalt.

750d(2) UPSTANDS/DRIP APRONS/COLLARS TO PIPES AND THE LIKE (VERTICAL

EXCEEDING 300MM HIGH)

20mm thick, 3 coat GuaraFLEX R on primed brick or concrete upstands, angle

fillet at base, tuck into chase at top/fair edge at top.


to exposed asphalt.


Product Information

P a g e 24 | 27

750d (3) UPSTANDS/DRIP APRONS (VERTICAL ANY HEIGHT) OVER AERATED

CONCRETE/LIGHTWEIGHT BLOCKS AND THE LIKE/TIMBER

20mm thick 3 coat GuaraFLEX R on expanded metal lathing on GuaraFELT

sheathing on upstands, angle fillet at base, tuck into chase at top/fair edge at

top.


to exposed asphalt.

770 INSTALLING MOVEMENT JOINTS

Location: Centre over structural movement joint, and bed to exact

finished level.

Joint width: Consult with Guaranteed Asphalt for recommendations and

details.

Bedding: Epoxy mortar.

Fixing: Consult with Guaranteed Asphalt for recommendations and

details.

Separating Layer: Dress onto horizontal surface of edgings, either side of joint.

Joints: Prepare and apply sealant as section Z22.

Sealant: Consult with Guaranteed Asphalt for recommendations and

details.

Size: __________________

Colour: __________________

785a INSTALLING EDGE TRIMS

Separating layer: GuaraFELT CP/CP Super carried under the trim to reinforce the joint.

Clear distance from wall or fascia: 3mm (minimum).

Fasteners: Countersunk wood screws to BS 1210.

Type: Consult with Guaranteed Asphalt for recommendations and details.

Spacing: 30mm from ends of trims and 300mm (maximum) centres.

Jointing sleeves: Fix one side only.

Expansion gap between ends of trim: Consult with Guaranteed Asphalt for

recommendations and details.

Corners: Use purpose made corner pieces.


Product Information

P a g e 25 | 27

810 LAYING INVERTED ROOF INSULATION

Preparation: Clear roof of other trades.

Condition of substrate: Clean

Setting out: Loose lay to brick pattern. Minimise cutting and avoid small cut prices at

perimeters and penetrations.

Joints: Butt together.

Protections, upstands, rainwater outlets etc: Cut insulation cleanly and fit closely

around.

Completion: Boards to be in good condition, with no springing or rocking. Cover to

prevent

wind uplift as soon as possible.

833a LAYING SUB SURFACE DRAINAGE LAYER

Condition of substrate: Clean

Setting out:

- Loose lay ensuring that the filter fabric is uppermost and facing the backfill.

Adjacent rolls should be positioned so that the cuspated cores are butt-

jointed.

- The filter fabric has a 100mm wide lap for lapping over the fabric of the

adjoining unit prior to backfilling.

Completion:

- Must be in a good condition, well fitting and stable.

860a LAYING PAVING TILES

Condition of substrate: Clean and dry.

Setting out: Minimise cutting.

Bedding: Consult with Guaranteed Asphalt for bedding

recommendations and separating layers for

cementitious beds.

Joints: - Open.

- Width generally: 3mm.

- Expansion gap intervals: 3m, nominal 25mm wide.

- Perimeter/Upstands: Stop tiles on line of GuaraFLASH T.


Product Information

P a g e 26 | 27

910a FINAL INSPECTION

Interim and final roof inspections: Strictly in accordance with Guaranteed Asphalt

Ltd’s requirements to satisfy the GuaraGUARD warranty requirements.

Rainwater goods must be tested by the contractor upon completion of the works

prior to handover.

Guaranteed Asphalt Ltd will conduct a final inspection upon notification of

completion by the contractor. This must take place prior to the application of any

surfacing above the waterproof covering. Failure to instigate a final inspection may

jeopardise approval and/or warranty release.

912a PROTECTION

As soon as an area of waterproofing has been completed, it should be inspected

and tested upon notification of completion by the contractor. Completed areas

should not be used as a building platform or as an access route by other trades. If

unavoidable, appropriate protection must be provided for the duration of the

construction period. Care should be taken not to mark or dent the works while laying

any additional protection. Inspection and/or leak testing must always take place

after removal of such protection.

Roofs accessed for regular maintenance of plant, or parts of the building, should be

given consideration in providing a predetermined route to and from the entry point

to minimise potential hazards.

920a ELECTRONIC ROOF INTEGRITY TEST

Test authority: To be a member company of WITA – Waterproofing Integrity Test

Association (contact: 020-7448-3857).

Timing of test: Prior to applying finishes to the waterproofing and/or handover.

Condition of roof covering prior to testing: Complete to stage where integrity can be

tested.

Surface: Clean and free of site debris.

Breaches detected: Re-test immediately following repair.

Test results: Submit on completion, to include plan of area tested.

Waterproofing integrity certificate: Submit on completion of a single test or series of

tests to the nominated roof or section thereof.

- The issue of the GuaraGUARD warranty is conditional upon the provision of

such a leak test certificate.


Product Information

P a g e 27 | 27

940 COMPLETION

Roof areas: Clean

- Outlets: Clear

- Flashings: Dressed into place

Work necessary to provide a weathertight finish: Complete

Storage of materials on finished surface: Not permitted

Completed coatings: Do not damage. Protect from petroleum based solvents and

other chemicals, traffic and adjacent or high level working.

GUARANTEES

940a

This specification is covered by the manufacturers dual signature guarantee

for workmanship and materials for an agreed period to fulfil employers

requirements, subject to terms and conditions.

940b

This specification and guarantee can be insurance backed, subject to the

terms and conditions of the Insurers, and secured by a one off premium

directly in accordance with the current requirements of the Financial Services

Authority (FSA).

941a MANUFACTURERS WARRANTY

The above specification/s shall be installed in accordance with the appropriate

sections of all current relevant codes of practice, Building Regulations, and

manufacturer’s installation instructions for product supplied by the company. The

works shall only be installed by GuaraTEC approved operatives, and, as agreed in the

contract, the GuaraGUARD warranty shall be issued to the building owner on

satisfactory completion.

942a MAINTENANCE

It is recommended that all flat roofs be inspected at a minimum frequency of twice a

year. Ideally, inspections should be carried out in spring and autumn accounting for

the effects of annual extremes of weather to be checked. Inspection should also be

carried out following works on the roof by other trades, or following installation of new

roof equipment.

All inspections and/or maintenance actions carried out at roof level must be in full

compliance with the appropriate health and safety regulations, and particularly

those specifically dealing with working at height.

115a

P a g e 1 | 4

115 a

J21 MASTIC ASPHALT ROOFING FINISHES TO BE READ IN CONJUNCTION WITH PRELIMINARIES/GENERAL CONDITIONS

GUARAFLEX POLYMER MODIFIED MASTIC ASPHALT BBA AGREMENT CERTIFICATE NO: 00/3701

NATIONAL BUILDING SPECIFICATION (NBS) 115 GENERAL

Types of coating: GuaraFLEX Asphalt

(Warm Roofing)

Polymer modified asphalt warm roof system for new build or refurbishment

(concrete decks). 115 a

1) Substrate: Insitu concrete or precast concrete planks grouted/laid flat or to falls.

2) Outlets: 2.1 For new build refer to clause 310a. 2.2 For refurbishment - reuse existing outlets.

3) Preparation: 3.1 For removal of existing coverings, refer to clause 610a and 620a. 3.2 For overlay of existing coverings, refer to clause 610a and 630a. 3.3 For new build, refer to clause 610a and 610b.

4) Priming:

For new build or refurbishment refer to clause 320a.

115a

P a g e 2 | 4

5) Screeds: 5.1 For new build, refer to clause 610c. 5.2 For refurbishment GuaraSCREED as 610c may be used to enhance existing falls.

Note: Other types of screed may be used.

Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

6) Vapour control layer: As clause 395a.

6.1 Laying as clause 670a. 7) Insulation:

As clause 420a.

7.1 For alternative insulation, refer to clause 420b, 430a-e. Consult with Guaranteed Asphalt for recommendations and advice.

7.2 Attachment: As clause 680a.

8) Separating layer (loose laid): As clause 695a over insulation.

115a

P a g e 3 | 4

9) Horizontal Mastic Asphalt Waterproofing: To falls/slopes not exceeding 5o from horizontal covering to deck. Cappings to kerbs, channels, gutters and the like.

- Manufacturer: Manufacturing Division, Guaranteed Asphalt Limited,

Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP. Tel: 01536 260995 Email: [email protected] Web: www.guaranteedasphalt.com

Note: For decks sloping over 5o refer to Guaranteed Asphalt for recommendations. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

- Product reference: GuaraFLEX PR polymer modified asphalt, 20mm thickness - as clause 740a over Guarascreed, or 20mm thickness - as clause 740b over separating layer.

10) Upstands:

Coverings to upstands, kerbs and the like as clause 750a and 750b, or 750b(3).

10.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

11) Insulated upstands: As clause 750c where required.

115a

P a g e 4 | 4

12) Surface protection: Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt.

13) Surface protection:

Porous concrete tiles for areas subject to foot traffic. Guaranteed porous concrete tiles as clause 470a and 860a to access walkways and promenade surfaces, bonded to GuaraFLEX R in strict accordance with manufacturers instructions.

Note: Other types of tiles may be used. Refer to Guaranteed Asphalt for

recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

14) Guarantees: As clause 940a.

14.1 Insurance backed as 940b.

15) Accessories (where required):

15.1 Timber for trims as clause 330 and 640.

15.2 Edge trims as clause 345 and 785a.

15.3 Movement joints as clause 380 and 770.

Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

16) Completion: As clauses 910 and 940.

115b

P a g e 1 | 4

115 b





(Warm Roofing)

Polymer modified asphalt warm roof system, for new build or refurbishment (timber or metal decks).

115 b

1) Substrate: Profiled metal/timber or plywood decking, designed in accordance with BS 6229:2003, laid flat or to falls.

2) Outlets: 2.1 For new build refer to clause 310a. 2.2 For refurbishment reuse existing outlets.

3) Preparation: 3.1 For removal of existing coverings, refer to clause 610a and 620a. 3.2 For new build, refer to clause 610a and 610b.

4) Priming: For new build or refurbishment refer to clause 320a.

115b

P a g e 2 | 4

5) Vapour control layer: 5.1 Timber deck: Joints in plywood substrate refer to clause 660a.

5.2 Metal deck: As clause 395b. 5.3 Laying: Refer to clause 670a.

6) Insulation: (For structures to falls) As clause 420a.

6.1 For alternative insulations/cut to fall systems, refer to clause 420b, 430a-e. Consult

with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

6.2 Attachment: As clause 680a. 7) Separating layer (loose laid):

As clause 695a over insulation.

8) Horizontal Mastic Asphalt Waterproofing: To falls/slopes not exceeding 5o from horizontal covering to decks. Cappings to kerbs, channels, gutters and the like.


Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP. Tel: 01536 260995 Email: [email protected] Web: www.guaranteedasphalt.com

- Product reference: GuaraFLEX PR polymer modified asphalt, 20mm thickness - as clause 740b over separating layer.

115b

P a g e 3 | 4

9) Upstands:


9.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice.

Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com


Note: For decks sloping over 5o, refer to Guaranteed Asphalt for

recommendations. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

11) Surface protection: Solar reflective paint for areas not subject to foot traffic. Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt.

115b

P a g e 4 | 4





13) Guarantees:

As clause 940a. 13.1 Insurance backed as 940b.







125a

P a g e 1 | 3

125 a





(Inverted Roofing)

Polymer modified asphalt inverted roof system for new build or refurbishment

(concrete deck with falls). 125 a

1) Substrate: Insitu concrete or precast concrete planks grouted.



4) Screeds: As clause 610d.

125a

P a g e 2 | 3

5) Separating Layer:

As clause 695b.

6) Horizontal Mastic Asphalt Waterproofing:

To falls/slopes not exceeding 5o from horizontal covering to deck. Cappings to kerbs, channels, gutters and the like.


Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

125 a



- Product reference: Guaraflex PR polymer modified asphalt, 20mm thickness - as

clause 740a over Guarascreed, or 20mm thickness - as clause 740b over separating layer.

7) Upstands:


8) Insulated upstands:

125a

P a g e 3 | 3

As clause 750c, 750c(1), 750c(3), 750(3)1, 750(4) and 750(4)1 where required.

9) Filter membrane:

As clause 440b.

10) Insulation/Protection:

As clause 440a. 10.1 Laying: As clause 810.

11) Permeable membrane: As clause 440c.

12) Securement: 12.1 Stone ballast as clause 460a. 12.2 Precast concrete paving slabs as clause 465. 12.3 Precast concrete paving slabs/timber decking as clause 465a.



125b

P a g e 1 | 4

125 b





(Inverted Roofing)

Polymer modified asphalt inverted roof system for new build or refurbishment

(concrete deck, flat with no falls).

125 b 1) Substrate:

Insitu concrete with smooth float finish/precast concrete planks grouted, flush finish/laid flat.


3) Priming:



5) Separating Layer:

As clause 695a.

125b

P a g e 2 | 4

125 b




Note: For decks sloping over 5o, refer to Guaranteed Asphalt for recommendations.


- Product reference: GuaraFLEX PR polymer modified asphalt, 25mm thickness - as clause 740c over separating layer.

7) Upstands: Coverings to upstands, kerbs and the like as clause 750a and 750b, or 750b(3).

8) Insulated upstands: As clause 750c, 750c(1), 750c(3), 750(3)1, 750(4) and 750(4)1 where required.

9) Insulation/Protection: As clause 440a.

9.1 Laying: As clause 810.

125b

P a g e 3 | 4


125b

P a g e 4 | 4


12) Guarantees:


125c

P a g e 1 | 3

125c





(Inverted Roofing)

Polymer modified asphalt triple protection inverted roof system for new build/refurbishment

(concrete deck flat or to falls - total bonding). 125 c

1) Substrate: Insitu concrete, smooth float finish laid flat or to falls.



4) Preparation: 4.1 For removal of existing coverings, refer to clause 610a, 610b(1) and 620a. 4.2 For new build, refer to clause 610a and 610b(1).

125c

P a g e 2 | 3

5) Bonding layer:

As clause 695c.

6) Screeds:

Where falls are required but not provided within the concrete substrate, use GuaraSCREED laid over bonding layer, refer to clause 610c.



Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP.

Tel: 020-7277-8773 Technical Services: 020-7732-7781. Email: [email protected]

Web: www.guaranteedasphalt.com


Tel: 01536-262381 Technical Services: 020-7732-7781 Email: [email protected] Web: www.guaranteedasphalt.com

- Product reference: Guaraflex PR polymer modified asphalt, 15mm thick - as clause 740d on and including bonding layer.

8) Upstands:


125c

Page 3 of 3



10) Filter membrane:

As clause 440b.

11) Insulation/Protection

11.1 Protection for structures requiring insulation (flat or to falls):

As clause 440a.




14) Guarantees:


125d

P a g e 1 | 4

125 d





(Inverted Roof Garden Systems)

Polymer modified asphalt warm roof system for new build or refurbishment (concrete decks)

for roof gardens, podiums and the like, hard landscaping, brick/concrete planters, hard pavings.

125 d



3) Preparation for Refurbishment:

For removal of existing coverings, refer to clause 610a and 620a.

4) Preparation for New Build: For new build, refer to clause 610a and 610b.

125d

P a g e 2 | 4

5) Priming:

For new build or refurbishment, refer to clause 320a.

6) Separating Layer (laid loose):

As clause 695a.





Tel: 01536-262381 Technical Services: 020-7732-7781. Email: [email protected] Web: www.guaranteedasphalt.com


recommendations. Tel: 020-7277-8773 Technical Services: 020-7732-7781

Email: [email protected] Web: www.guaranteedasphalt.com

- Product reference: GuaraFLEX PR polymer modified asphalt, 25mm thickness - as clause 740c.

8) Upstands:


125d

P a g e 3 | 4



9.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Technical Services: 020-7732-7781


10) Filter Membrane:

As clause 440b.

11) Insulation/Protection: As clause 440a.


12) Permeable Membrane: As clause 440c.

13) Insulated Upstands: As clause 750c(2) and 740c.

14) Protection for Insulation/Structural Topping: As clause 440a(1).

Note: Planters, paved areas, selection of growing medium and vegetation shall

be to the Landscape Architects design, constructed off the structural topping.

125d

P a g e 4 | 4

15) Guarantees:

As clause 940a.






Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773 Technical Services: 020-7732-7781. Email: [email protected]


17) Completion:

As clauses 910 and 940.

125e

P a g e 1 | 4

125 e





(Inverted Green Roof System)

Polymer modified asphalt inverted roof system for new build or refurbishment (concrete decks) for green roofs,

podiums and the like. 125 e





4) Preparation for New Build: For new build, refer to clause 610a and 610b.

5) Priming:

For new build or refurbishment, refer to clause 320a.

125e

P a g e 2 | 4

6) Separating Layer (laid loose):

As clause 695a.








- Product reference: GuaraFLEX PR polymer modified asphalt, 25mm thickness - as clause 740c.

8) Upstands:


9) Insulated upstands: As clause 750c, 750c(1), 750c(3), 750(3)1, 750(4) and 750(4)1 where required.

9.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Technical Services: 020-7732-7781


125e

P a g e 3 | 4

10) Filter Membrane: As clause 440b.

11) Insulation/Protection:

As clause 440a.



13) Stone Ballast:

As clause 460a.

Note: Selection of roof barrier drainage layer, growing medium vegetation and paved areas to Landscape Architects design.

14) Guarantees:

As clause 940a.





125e

P a g e 4 | 4




16) Completion:


135a

P a g e 1 | 4

135 a





(Cold Roofing)

Polymer modified asphalt cold roof system for new build or refurbishment (concrete decks).

135 a

1) Substrate: Insitu concrete or precast concrete planks grouted /laid flat or to falls/screeded to falls.


3) Preparation for Refurbishment: For removal of existing coverings, refer to clause 610a and 620a.

4) Preparation for Overlay Existing Coverings:

Refer to clause 610a and 630a.

5) Preparation for New Build: Refer to clause 610a and 610b.

6) Priming:


135a

P a g e 2 | 4

7) Screeds: 7.1 For new build, refer to clause 610c. 7.2 For refurbishment Guarascreed as 610c may be used to enhance existing falls.


Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Technical Services: 020-7732-7781


8) Separating Layers for Overlay System: Layed loose as clause 695f (13mm thickness) and 695c bonding.

9) Separating Layer for New Build (Under Guarascreed): Refer to clause 695b or 695a for refurbishment where temporary waterproofing is required.

10) Separating Layer Over Other Screed: Refer to clause 695a.

135a

P a g e 3 | 4









- Product reference: GuaraFLEX PR polymer modified asphalt - Over Guarascreed – (20mm thickness) refer to clause

740a. - Over other screeds – (20mm thickness) refer to clause

740b. - For flat decks with no falls – (25mm thickness) refer to

clause 740c.

12) Upstands: Coverings to upstands, kerbs and the like as clause 750a, 750b or 750b (3).

12.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to

Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Technical Services: 020-7732-7781


http://www.guaranteedasphalt.com/

135a

P a g e 4 | 4

13) Surface protection to areas not subject to foot traffic:

Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt. 14) Surface protection to areas subject to foot traffic:

Guaranteed porous concrete tiles, as clause 470a and 860a.

Note: Other types of tiles may be used. Refer to Guaranteed Asphalt for recommendations and advice.

Tel: 020-7277-8772 Technical Services: 020-7732-7781 Email: [email protected]


15) Guarantees:









135b

P a g e 1 | 4

135 b





(Cold Roofing)

Polymer modified asphalt cold roof system, for new build or refurbishment (timber or metal decks).

135 b

1) Substrate: Profiled metal/timber or plywood decking, designed in accordance with BS 6229:2003, laid flat or to falls.




135b

P a g e 2 | 4

5) Separating layer (loose laid):

As clause 695a over insulation.





- Product reference: GuaraFLEX PR polymer modified asphalt – 20mm thickness as

clause 740b over separating layer.

7) Upstands: Coverings to upstands, kerbs and the like as clause 750a 750b, 750(b) 3 or 750d,

as recommended by Guaranteed Asphalt Ltd. Tel: 01536-262381 Technical Services: 020-7732-7781





recommendations. Tel: 01536-262381 Technical Services: 020-7732-7781



135b

P a g e 3 | 4


Solar reflective paint for areas not subject to foot traffic. Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt.

9) Surface protection: Porous concrete tiles for areas subject to foot traffic. Guaranteed porous concrete tiles as clause 470a and 860a to access walkways and promenade surfaces, bonded to GuaraFLEX PR in strict accordance with manufacturers instructions.


recommendations and advice. Tel: 01536-262381. Technical Services: 020-7732-7781.

Email: [email protected]


10) Guarantees:


135b

P a g e 4 | 4







12) Completion:


135c

P a g e 1 | 3

135 c





(Cold Roofing)

Polymer modified asphalt cold roof system for new build (concrete deck flat or to falls - total bonding).

1) Substrate:

Insitu concrete, smooth float finish, laid flat or to falls.


3) Preparation: 3.1 For removal of existing coverings, refer to clause 610a, 610b(1) and 620a. 3.2 For new build, refer to clause 610a and 610b(1).


5) Bonding Layer: As clause 695c.

135c

P a g e 2 | 3

6) Screeds:

Where falls are required but not provided within the concrete substrate, use Guarascreed laid over bonding layer, refer to clause 610c.





- Product reference: GuaraFLEX PR polymer modified asphalt, 15mm thickness as

clause 740d over bonding layer.


8.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d.

Refer to Guaranteed Asphalt for recommendations and advice. Tel: 01536-262381 Technical Services: 020-7732-7781




9) Protection:

As clause 610e and 610f.

135c

P a g e 3 | 3

10) Surface Finishes: Typically - brick/block paviours, paving slabs, tiles, timber decking etc. Consult with Guaranteed Asphalt for recommendations and advice on installation & additional protection. Tel: 020-7277-8773 Technical Services: 020-7732-7781 Email: [email protected] Web: www.guaranteedasphalt.com









13) Completion: As clauses 910 and 940

135d

P a g e 1 | 4

135 d





(Buried roof garden uninsulated)

Polymer modified asphalt cold roof garden system for new build or refurbishment (concrete decks), for roof gardens, podiums and the like, hard landscaping,

brick/concrete planters, hard pavings.

135 d 1) Substrate:

Insitu concrete or precast concrete planks grouted/laid flat or to falls.



4) Preparation for New Build. For new build, refer to clause 610a and 610b.

135d

P a g e 2 | 4

5) Priming:


6) Separating Layer: As clause 695a.


To falls/slopes not exceeding 5o from horizontal covering to decks. Cappings to kerbs, channels, gutters and the like.





recommendations. Tel: 01536-262381 Technical Services: 020-7732-7781


- Product reference: GuaraFLEX PR polymer modified asphalt, 25mm thickness as clause 740c.

8) Upstands: Coverings to upstands, kerbs and the like as clause 750a 750b, 750(b) 3 or 750d, as recommended by Guaranteed Asphalt Ltd.


135d

P a g e 3 | 4






11) Protection for Waterproofing: As clause 440a(2).

Note: Planters, paved areas, selection of growing medium and vegetation shall be to the Landscape Architects design, constructed off the structural topping.

12) Guarantees:





135d

P a g e 4 | 4




14) Completion:


135e

P a g e 1 | 4

135 e





(Buried green roof uninsulated)

Polymer modified asphalt cold green roof system for new build or refurbishment (concrete decks), for green

roofs, podiums and the like.

135 e 1) Substrate:




4) Preparation for New Build. For new build, refer to clause 610a and 610b.


135e

P a g e 2 | 4

6) Separating Layer: As clause 695a.







recommendations. Tel: 020-7277 8773 Technical Services: 020-7732-7781


- Product reference: GuaraFLEX PR polymer modified asphalt, 25mm thickness as clause 740c.



135e

P a g e 3 | 4




10) Protection for Waterproofing: As clause 610e

11) Filter Membrane: As clause 440b

12) Stone Ballast: As clause 460a

Note: Selection of roof barrier, drainage layer, growing medium, vegetation and paved

areas to Landscape Architects design.






135e

P a g e 4 | 4




15) Completion:


155a

P a g e 1 | 3

155a


GUARAFLEX POLYMER MODIFIED MASTIC ASPHALT BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 1

ECONOMY CAR DECK NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL


(Internal Paving/Flooring)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (unheated) internal decks not subject to water run-off for cars and

light commercial vehicles, maximum wheel load 2 tonnes per axle.

155 a 1) Substrate:

Insitu concrete or precast concrete planks grouted/laid flat or to falls. 2) Outlets: 2.1 For new build refer to clause 310a. 2.2 For refurbishment - reuse existing outlets.

3) Preparation: 3.1 For removal of existing coverings, refer to clause 610a and 620a. 3.2 For new build, refer to clause 610a and 610b. 4) Priming:


155a

P a g e 2 | 3


As clause 695g.

6) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course. To falls/slopes not exceeding 5o from horizontal covering to deck.



Tel: 01536-260995. Email: [email protected]




- Product reference: Guaranteed Standard Paving 25mm thickness - as clause 740f (s).

- Surface finish: Sand rubbed smooth finish. Terrazzo exposed aggregate finish Crimped with indenting roller

7) Abutments: Angle fillets, as clause 750b(1).

8) Guarantees:


155a

P a g e 3 | 3





Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773. Email: [email protected]


10) Completion:


155b

P a g e 1 | 3

155b



ECONOMY CAR DECK/FLOOR FINISH NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL


(Internal Waterproofing Paving/Flooring)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (heated)

internal floor areas and decks, not subject to water run-off for cars and light commercial vehicles, maximum

wheel load 2 tonnes per axle.

155 b




155b

P a g e 2 | 3



As clause 695g.

6) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course. To falls/slopes not exceeding 5o from horizontal covering to deck.



Tel: 01536-260995 Email: [email protected]


Note For decks sloping over 5o, refer to Guaranteed Asphalt for

recommendations. Tel: 020-7277-8773


- Product reference: Guarascreed Floor Screed 25mm thickness - as clause 740g (f).


7) Abutments:

Angle fillets, as clause 750b(1).

8) Guarantees:


155b

P a g e 3 | 3







10) Completion:


155c

P a g e 1 | 3

155 C


GUARAFLEX POLYMER MODIFIED MASTIC ASPHALT BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 3 ECONOMY CAR DECK



(Internal Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (unheated) internal decks, subject to water run-off for cars and light commercial vehicles, maximum wheel load 2 tonnes per

axle. 155 c




155c

P a g e 2 | 3

4) Priming:


5) Screeds: 5.1 For new build, refer to clause 610d(1). 5.2 For refurbishment Guarascreed as 610d(1) may be used to enhance existing falls, where

required. Note: Other types of screed may be used.

Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773



As clause 695g.

6.1) As clause 695b where insurance-backed guarantee (940b) is required

7) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course:

To slopes not exceeding 5o from horizontal covering to deck.

- Product reference: GuaraFLEX Standard Paving 25mm thickness - as clause 740f (s).


8) Upstands: Coverings to upstands, kerbs and the like as clause 750a and 750b or 750b (3).


Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected]

Web: www.guaranteedasphalt.com.

155c

P a g e 3 | 3

9) Guarantees:








11) Completion:


155d

P a g e 1 | 3

155d



ECONOMY CAR DECK/FLOOR FINISH NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL


(Internal Waterproof Paving/Flooring)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated (heated)

internal decks and walkways, subject to water run-off for cars and light commercial vehicles, maximum wheel

load 2 tonnes per axle. 155 d




155d

P a g e 2 | 3

4) Priming:


5) Screeds: 5.1 For new build, refer to clause 610d(1). 5.2 For refurbishment GuaraSCREED as 610d(1) may be used to enhance existing falls.





As clause 695g.



- Product reference: GuaraSCREED Floor Screed 25mm thickness - as clause 740g (f).


8) Upstands:

Coverings to upstands, kerbs and the like as clause 750a and 750b or 750b (3).


Tel: 020-7277-8773 Email: [email protected]


155d

P a g e 3 | 3

9) Guarantees:






Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773 Email: [email protected]


11) Completion:


155e

P a g e 1 | 3

155e



ECONOMY CAR DECK NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL

Types of coating: Guaraflex Asphalt

(External Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Un-insulated external decks for multi-storey roof top car parks, for cars and


155 e




4) Preparation for New Build:

Refer to clause 610a and 610b.

155e

P a g e 2 | 3

5) Priming:


6) Screeds: 6.1 For new build, refer to clause 610d(1). 6.2 For refurbishment Guarascreed as 610d(1) may be used to enhance existing falls.





As clause 695b.



- Product reference: Guaraflex Standard paving 25mm thickness polymer modified asphalt - as clause 740f (s).


9) Upstands:


9.1 Guaraflex PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773

Email: [email protected] Web: www.guaranteedasphalt.com.


155e

P a g e 3 | 3

10) Guarantees:

As clause 940a. 10.1 Insurance backed as 940b. 11) Accessories (where required):






12) Completion:


155e (2)

P a g e 1 | 4

155e (2) J21 MASTIC ASPHALT ROOFING FINISHES

TO BE READ IN CONJUNCTION WITH PRELIMINARIES/GENERAL CONDITIONS GUARAFLEX POLYMER MODIFIED MASTIC ASPHALT

BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 5 (2) ECONOMY PLUS CAR DECK






155 e (2)




155e (2)

P a g e 2 | 4


5) Priming:







As clause 695g.








Email: [email protected] Web: www.guaranteedasphalt.com - Product reference: GuaraFLEX PR 10mm thickness polymer modified asphalt - as

clause 740d (1).

155e (2)

P a g e 3 | 4



- Product reference: GuaraFLEX PP 25mm thickness polymer modified asphalt - as clause 740f(s).


10) Upstands:


10.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773



11.1 Insurance backed as 940b. 12) Accessories (where required):




155e (2)

P a g e 4 | 4




13) Completion:


155e (3)

P a g e 1 | 4



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 5 (3) STANDARD CAR DECK






155 e (3)




155e (3)

P a g e 2 | 4


5) Priming:







As clause 695g.




Tel: 01536-260995 Email: [email protected] Web: www.guaranteedasphalt.com




- Product reference: GuaraFLEX PR 10mm thickness polymer modified asphalt - as

clause 740d.

155e (3)

P a g e 3 | 4



- Product reference: GuaraFLEX PP 25mm thickness polymer modified asphalt - as clause 740f.



10.1 GuaraFLEX R mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773







155e (3)

P a g e 4 | 4




13) Completion:


155e (4)

P a g e 1 | 4



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 5 (4) STANDARD PLUS CAR DECK






155 e (4)






5) Priming:


155e (4)

P a g e 2 | 4






As clause 695b.





Tel: 01536-260995. Email: [email protected] Web: www.guaranteedasphalt.com




- Product reference: GuaraFLEX PR 10mm thickness polymer modified asphalt - as clause 740d.

155e (4)

P a g e 3 | 4




- Surface finish: Sand rubbed and crimped with indenting roller. Terrazzo exposed aggregate finish




11) Guarantees:







13) Completion:


155e (4)

P a g e 4 | 4


155e (5)

P a g e 1 | 3



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 5 (5) SUPER CAR DECK






155 e (5)






155e (5)

P a g e 2 | 3

5) Priming:







As clause 695g.







Note For decks sloping over 5o, refer to Guaranteed Asphalt for



- Product reference: GuaraFLEX PR 20mm thickness polymer modified asphalt - as clause 740b.

155e (5)

P a g e 3 | 3

9) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course: To slopes not exceeding 5o from horizontal covering to deck.

- Product reference: GuaraFLEX PP 25mm thickness polymer modified asphalt -

as clause 740f.


10) Upstands:


GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Consult with Guaranteed Asphalt Limited for recommendations and details. Tel: 020-7277-8773 Email: [email protected]







Consult with Guaranteed Asphalt Limited for recommendations and details. Tel: 020-7277-8773 Email: [email protected]



155e (6)

P a g e 1 | 3

155 E (6) J21 MASTIC ASPHALT ROOFING FINISHES


BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 5 (6) SUPER PLUS CAR DECK






155 e (6)







155e (6)

P a g e 2 | 3






As clause 695b.










- Product reference: GuaraFLEX PR 20mm thickness polymer modified asphalt - as clause 740b.

155e (6)

P a g e 3 | 3


- Product reference: GuaraFLEX PP 25mm thickness polymer modified asphalt -

as clause 740f.


10) Upstands:

Coverings to upstands, kerbs and the like as clause 750a and 750b. or 750b GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to

Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773


11) Guarantees:







13) Completion:



155f

P a g e 1 | 5

155f J21 MASTIC ASPHALT ROOFING FINISHES


BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 6 ECONOMY LORRY DECK




Polymer modified asphalt system for new build or refurbishment (concrete decks). Uninsulated external

elevated decks for heavy commercial vehicles, maximum wheel load 10.5 tonnes per axle.

155 f






5) Priming:

155f

P a g e 2 | 5


155f

P a g e 3 | 5






As clause 695g.








- Product reference: GuaraFLEX PR 10mm thickness polymer modified asphalt - as clause 740d (i).

155f

P a g e 4 | 5


- Product reference: GuaraFLEX PPH 40mm thickness polymer modified asphalt -

as clause 740g.

- Surface finish: Sand rubbed and crimped with indenting roller. 14 or 20mm pre-coated chippings in high stress areas.

Terrazzo exposed aggregate finish










12.3 Movement joints as clause 380 and 770. Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773 Email: [email protected]


13) Completion:

155f

P a g e 5 | 5


155f (2)

P a g e 1 | 5

155 F (2) J21 MASTIC ASPHALT ROOFING FINISHES


BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 6 (2) STANDARD LORRY DECK






155 f (2) 1) Substrate:




155f (2)

P a g e 2 | 5


5) Priming:







As clause 695g and 695h where applicable.









155f (2)

P a g e 3 | 5

clause 740d (i).

155f (2)

P a g e 4 | 5



- Product reference: GuaraFLEX PPH 40mm thickness polymer modified asphalt - as clause 740g.

- Surface finish: Sand rubbed and crimped with indenting roller. 14 or 20mm

pre-coated chippings in high stress areas. Terrazzo exposed aggregate finish









155f (2)

P a g e 5 | 5





13) Completion:


155f (3)

P a g e 1 | 3



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 6 (3) STANDARD PLUS LORRY DECK






155 f (3)







155f (3)

P a g e 2 | 3






As clause 695b and 695h where applicable.










clause 740d. 9) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course:


155f (3)

P a g e 3 | 3


as clause 740g.

- Surface finish: Sand rubbed and crimped with indenting roller. 14 or 20mm pre-coated chippings in high stress areas.















155f (4)

P a g e 1 | 4



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 6 (4) SUPER LORRY DECK












155f (4)

P a g e 2 | 4

5) Priming:







As clause 695g or 695h where applicable.





Tel: 01536-260995. Email: [email protected]





155f (4)

P a g e 3 | 4






pre-coated chippings in high stress areas. Sand rubbed smooth finish. Terrazzo exposed aggregate finish

10) Upstands:











155f (4)

P a g e 4 | 4



13) Completion:


155f (5)

P a g e 1 | 4



BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 6 (5) SUPER PLUS LORRY DECK










155f (5)

P a g e 2 | 4









As clause 695b or 320b where applicable








155f (5)

P a g e 3 | 4






pre-coated chippings in high stress areas. Terrazzo exposed aggregate finish










155f (5)

P a g e 4 | 4




13) Completion:


155g

P a g e 1 | 4

155 G





(Internal/External Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). External ramps not exceeding 1 in 10 gradient, uninsulated for cars and

light commercial vehicles, maximum wheel load 2.0 tonnes per axle.

155 g

1) Substrate: Insitu concrete lightly tamped.



155g

P a g e 2 | 4


155g

P a g e 3 | 4

5) Priming:


6) Separating layer (loose laid): As clause 695e.

7) Mastic Asphalt Waterproofing: To falls/slopes not exceeding 10o from horizontal covering to deck. Cappings to kerbs, channels, gutters and the like.









clause 740d. 8) Horizontal Mastic Asphalt Paving/Protection Layer/Wearing Course:


as clause 740f.


155g

P a g e 4 | 4

9) Upstands:



Email: [email protected] Web: www.guaranteedasphalt.com..

10) Guarantees:








12) Completion:


155h

P a g e 1 | 3

155 H





(Internal/External Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). External ramps not exceeding 1 in 10 gradient for heavy commercial

vehicles, maximum wheel load 10.5 tonnes per axle. 155 h

1) Substrate: Insitu concrete lightly tamped.





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6) Separating layer (loose laid): As clause 695e.

7) Mastic Asphalt Waterproofing: To falls/slopes not exceeding 10o from horizontal covering to deck. Cappings to kerbs, channels, gutters and the like.








- Product reference: GuaraFLEX PR 10mm thickness polymer modified asphalt - as clause 740g.




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Timber for trims as clause 330 and 640. Edge trims as clause 345 and 785a.

Movement joints as clause 380 and 770.



12) Completion:


155i

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155 I J21 MASTIC ASPHALT ROOFING FINISHES


BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 9 NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL


(Internal/External Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for cars and light commercial vehicles, maximum wheel

load 2 tonnes per axle. 155 i


Note: Provision should be made for removal of entrapped moisture in accordance with

the requirements of BS 6229:2003.



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4) Insulation:

As clause 440a. For alternative insulation, consult with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com and advice.

5) Protection: As clause 440a(1) over insulation.

6) Screeds: 6.1 For new build, refer to clause 610d. 6.2 For refurbishment GuaraSCREED as 610c may be used to enhance existing falls, if

required. Note: Other types of screed may be used.




8) Separating layer (loose laid): As clause 695b.

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13) Refurbishment: REFER TO SPECIFICATION J21 155 E.

14) Guarantees:





15.3 Movement joints as clause 380 and 770. Consult with Guaranteed Asphalt for recommendations and details. Tel: 020-7277-8773 Email: [email protected]


16) Completion:


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155 J






Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for

heavy commercial vehicles, maximum wheel load 10.5 tonnes per axle.

155 j


Note: Provision should be made for removal of entrapped moisture in accordance with

the requirements of BS 6229:2003.



For new build, refer to clause 610a and 610b.

4) Additional Protection for High Stress Areas: Refer to clause 660b.

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5) Insulation: As clause 440a. For alternative insulation, consult with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

6) Protection: As clause 440a(1) over insulation.

7) Screeds:

For new build, refer to clause 610c. Note: Other types of screed may be used.



8) Priming: For new build or refurbishment, refer to clause 320a.

9) Refurbishment:

REFER TO SPECIFICATION J21 155 F. Where insulation and concrete protection layer is retained.


As clause 695b.

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- Surface finish: Sand rubbed and crimped with indenting roller. Pre-coated

chippings 14 or 20mm in high stress areas. Terrazzo exposed aggregate finish



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As clause 750c where required.




15) Guarantees:

As clause 940a. 15.1 Insurance backed 940b.







17) Completion:


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155 K






Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for car and light commercial vehicles, maximum wheel load 2

tonnes per axle.

(Dry Fast-Track System)


2) Outlets: 2,1 For new build refer to clause 310a. 2.2 For refurbishment - reuse existing outlets.


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5) Insulation: As clause 430c.

5.1 Attachment: As clause 680a. 5.2 Alternative insulation as clause 430e

5.3 Vapour control layer as clause 395a Consult with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected]

Web: www.guaranteedasphalt.com 7) Separating layer (loose laid):

As clause 695b.










- Product reference: GuaraFLEX R 10mm thickness polymer modified asphalt - as

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P a g e 3 | 4

clause 740d.

- Asphalt concrete: As clause 430e(1).




- Surface finish: Sand rubbed and crimped with indenting roller.


10) Upstands: Coverings to upstands, kerbs and the like as clause 750a and 750b.


11.1 GuaraFLEX R mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773


12) Guarantees:





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14) Completion:


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155 L






Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for

heavy goods vehicles, maximum wheel load 10.5 tonnes per axle.


155 l 1) Substrate:




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5) Insulation: As clause 430c. Consult with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com


6) Separating layer (loose laid): As clause 695d.











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as clause 740g.

- Surface finish: Sand rubbed and crimped with indenting roller. Pre-coated chippings 14 or 20mm in high stress areas.












155l

P a g e 4 | 4



13) Completion:


155m

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155 M J21 MASTIC ASPHALT ROOFING FINISHES


BBA AGREMENT CERTIFICATE NO: 00/3691 - PROPRIETARY SYSTEM 13 NATIONAL BUILDING SPECIFICATION (NBS) 155 GENERAL


(Covered Insulated Waterproof Paving)

Polymer modified asphalt system for new build or refurbishment (concrete decks). Insulated decks for car and light commercial vehicles, maximum wheel load 2

tonnes per axle.





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4) Priming:


5) Insulation: As clause 430e. Consult with Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773 Email: [email protected] Web: www.guaranteedasphalt.com

5.1 Attachment: As clause 680a. 5.2 Alternative insulation: As clause 430e. 5.3 Vapour control layer: As clause 395a. Consult with Guaranteed Asphalt for



As clause 695b.








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as clause 740g.






11) Guarantees:



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mailto:[email protected]

155n

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155 N





(Cold Roof Waterproof Paving)

Polymer modified asphalt cold roof system for new build or refurbishment (concrete decks), podiums, pedestrian

access areas, balconies, etc. 1) Substrate:

Insitu concrete or precast concrete planks grouted/laid flat/to falls/screeded to falls.



4) Preparation for Newbuild: Refer to clause 610a and 610b.


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7) Separating layer (loose laid): As clause 695b.



Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP. Tel: 01536-260995 Email: [email protected] Web: www.guaranteedasphalt.com



- Product reference: GuaraFLEX PR 10mm thick polymer modified asphalt - as clause 740d.

9) Paving/Protection Layer/Wearing Course:

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GuaraFLEX R polymer modified asphalt, as clause 740e.

9.1 Where required, additional surface protection may be provided - as clause 470a and 860a. 9.2 Terrazzo exposed aggregate finish where required.



Guaranteed Asphalt for recommendations and advice. Tel: 020-7277-8773


11) Surface protection: - Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt not subject to foot traffic.

11.1 As clause 470a for areas subject to foot traffic.

12) Guarantees:






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14) Completion:


155p

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155 P





(Warm Roof Waterproof Paving)

Polymer modified asphalt warm roof system for new build or refurbishment (concrete decks) podiums,

pedestrian access areas, balconies etc.

155 p 1) Substrate:

In situ concrete/precast concrete planks grouted/laid flat or to falls.




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5) Screeds: 5.1 For new build, refer to clause 610c. 5.2 For refurbishment Guarascreed as 610c may be used to enhance existing falls.

Note: Other types of screed may be used. Refer to Guaranteed Asphalt for


6) Vapour control layer: As clause 395a. Laying as clause 670a.

7) Insulation:

As clause 430a, 430c, 430e.


8) Separating layer (loose laid): As clause 695a over insulation.




Earlstree Industrial Estate, Princewood Road, Corby, Northants NN17 4AP. Tel: 01536-260995. Email: [email protected] Web: www.guaranteedasphalt.com

- Product reference: GuaraFLEX PR polymer modified asphalt as clause 740a over

Guarascreed or 740b over insulation, where Guarascreed is not used.

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10) Upstands:


10.1 GuaraFLEX PR mastic asphalt upstands may be used as clause 750d. Refer to Guaranteed Asphalt for recommendations and advice. Tel: 01536-260995 Email: [email protected] Web: www.guaranteedasphalt.com


As clause 750c where required.

12) Surface protection: Solar reflective paint for areas not subject to foot traffic. Guaranteed solar reflective paint as clause 495 and 545 to exposed asphalt.




recommendations and advice. Tel: 01536-260995 Email: [email protected] Web: www.guaranteedasphalt.com

14) Guarantees:



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100

J31 LIQUID APPLIED ROOFING FINISHES TO BE READ IN CONJUNCTION WITH PRELIMINARIES/GENERAL CONDITIONS

GUARATEC RUBBERIZED HOT MELT BBA AGREMENT CERTIFICATE NO: 00/3701


Types of coating: GuaraTEC Hot Melt

(Protected Waterproofing)

Hot Melt system for new build or refurbishment (concrete decks).

100

1) Substrate: In situ concrete or precast concrete planks grouted.


3) Preparation: As clause 610h. Surface to be dry, clean and free from all contaminants including oil, grease, laitance, dirt and debris. Advanced bond tests must be carried out by certified personnel and recorded on all areas.

4) Priming:

For new build or refurbishment refer to clause 320a, applied as clause 655.

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5) Horizontal Waterproofing: To falls/slopes not exceeding 5o from horizontal covering to decks. Cappings to kerbs, channels, gutters and the like.



- Product reference: GuaraTEC 6mm thickness - as clause 655a

6) Protection Sheet layer:

GuaraFELT Protection sheet clause as clause 353-07 laid per clause 655a 7) Insulation:

As clause 440a.

8) Upstands: Coverings to upstands, kerbs and the like as clause 770a Refer to Guaranteed Asphalt for recommendations and advice.


9) Surface protection: (See Insulation 440a) Paving slabs on support pads per clause 465 or 20-40 ballast or living roof options available: Refer to Guaranteed Asphalt for recommendations and advice.


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11) Completion:


Guaranteed Asphalt NBS Specifications 2013

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Transcript of Guaranteed Asphalt NBS Specifications 2013