SAFEBRIDGE - Bradford Insulation/media/bradford/files/safebridge-brochure.pdf · SafeBridge...

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SAFEBRIDGE High performance roof insulation system

Transcript of SAFEBRIDGE - Bradford Insulation/media/bradford/files/safebridge-brochure.pdf · SafeBridge...

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SAFEBRIDGEHigh performance roof insulation system

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2.1 Designing for Green Star and Building Code Compliance

Minimum energy efficiency standards for commercial buildings

are mandatory in the Building Code of Australia (BCA) and

National Construction Code of Australia (NCC). Thermal

insulation plays a key role in meeting these requirements and

improvements in insulation also contribute to reductions in

energy use which is a critical factor in Green Star accreditation.

Choosing the right insulation also offers the additional benefits

of condensation control, dampening noise and controlling heat

flow in and out of the building.

To achieve the BCA/NCC Section J thermal insulation values, the

roof system must allow sufficient space under the roof sheet for

the insulation to recover to its design thickness to provide its

rated insulation value. Failure to provide enough space will result

in compression of the insulation and reduce its performance.

SafeBridge essentially uses the depth of the purlins to provide

a cavity for the insulation to recover to its design thickness,

rather than create a space above the purlin using a roof spacer.

Through the development of a patented bridging system and

keyway, SafeBridge allows the purlin bridging to be set at a

predetermined height during the design phase.

2.2 Designing for Worker Safety

A unique feature of the system is the application of the

safety mesh between, rather than over the top of the purlins.

This configuration eliminates the need to ‘lap’ safety mesh and

cover the purlins, resulting in immediate wire mesh material

cost savings. Additionally, this method of assembly allows the

use of the SafeBridge Wire Pulley system which not only saves

time in applying the wire mesh, but also removes workers

from the exposed edge of the roof during construction, greatly

increasing their safety.

2.3 Design Considerations

The space created between the SafeBridge bridge bar and the

underside of the roof sheet is exactly the right depth to suit

the insulation and to ensure control of condensation on the

underside of the roof sheet and purlins. As the SafeBridge

system is integrated into the purlin and bridge bar assembly,

there is little or no change to the roof design. Specified designs

primarily need to consider the SafeBridge purlin spacing and

bridge bar location relative to other roofing components during

the design phase. In summary, SafeBridge:

Can achieve high thermal performance in any climate zone

(as defined by the BCA/NCC)

Requires no additional roof spacers to elevate the roof sheet

above the purlin

Retains the structural integrity and load points of the roof interior

Suits most roof pitches and complex roof designs

Is available with either foil, decorative or acoustic finishes

on the internal faced insulation material

Can be used in cyclonic regions in conjunction with cyclonic

rated components.

Does not increase the size of the roof cavity space and

subsequent capacity of building services.

INTRODUCTION

SAFEBRIDGE SYSTEM OVERVIEW Code compliant with BCA/NCC Section J

Uses the purlin space without elevating

the overall roof or fascia height

Creates a safer roof environment for

workers during construction

Suitable for cyclonic and non-cyclonic

regions

Figure 1.

Metroll SafeBridge® purlin

Thermal break tapeBradford

Anticon™ SB

Roof sheet

SafeBridge®Bridge Bar

Australian MeshSafeBridge® mesh

3.0

SafeBridge® is a unique, patented system that combines roof safety with BCA Section J compliance without the use of roof spacers.

SafeBridge utilises the depth of the purlin and the position of the purlin bridge bar to create exactly the right amount of space to

comply with Section J of the BCA, which states that, where required, insulation must comply with AS/NZS4859.1 and be installed so

that it maintains its position and thickness. SafeBridge is a unique system that is application specific and must be 'designed into the

building' with standard purlin spacing; 610/910/1210/1360mm. The SafeBridge system has been jointly developed by Metroll, CSR

Bradford, ITW Buildex, Australian Mesh & SafeBridge and is exclusively available when combining all of these system components.

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KEY DESIGN ELEMENTS

Purlin Keyway - simple roofing screw assembly

Anticon SB has centre bonded foil lap to protect purlins from condensation

Bridge Bar Stabiliser - prevents purlin ‘roll’R0.2 Thermal Break Tape - 10mm thick

Standard Purlin Spacing610mm, 910mm, 1210mm, 1360mm

Bridge Bar Spacing Maximum 1500mm

3.0

Important Purlin Spacing Design Considerations:

SafeBridge relies upon specific purlin spacing listed in Table 1.

Please ensure that you consult with Bradford and Metroll early

in the design phase to understand the relationship of purlin

depth and spacing to R-Value and the BMT relative to your

ultimate roof design loads.

Table 1. Purlin and Bridge Bar Spacing

SafeBridge PAGE 3

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THERMAL DESIGN TABLES – PERFORMANCE SOLUTIONS FOR ALL APPLICATIONS

4.1 BCA/NCC Compliant Series – Deemed to Satisfy Solutions

The BCA/NCC represents the minimum level of insulation

for good energy efficiency and performance of the building

envelope. Given the relatively low capital cost of insulation,

increasing roofing insulation R-Values during the design phase

can decrease the air conditioning load, thus reducing project

capital equipment costs as well as future running costs.

Table 2 below outlines the minimum SafeBridge system

insulation requirements to meet the Deemed to Satisfy

provisions of the BCA/NCC.

The BCA/NCC also sets out a requirement for adjustment of

minimum R-Value to compensate for loss of ceiling insulation.

Please note the following tables do not address solutions where

the loss of ceiling insulation exceeds the amount nominated in

BCA/NCC table J1.3b. Please refer to the BCA/NCC for further

details and contact Bradford for solutions.

The flexibility of the SafeBridge system allows a variety of

different thermal solutions to be achieved by changing the

combination of purlin depth and insulation products. Whilst

these combinations are infinite, the two series below and on

the next page provide a range of solutions for most applications,

ranging from simple code compliance through to high R-Value

solutions. If the right solution for your project is not listed,

contact Bradford for project specific design support.

Roof sheet

Thermal break tape

Purlin

Bulk insulation

Foil facing

Safety mesh

Figure 2. SafeBridge component configuration

Table 2. BCA/NCC COMPLIANT SERIES

Roof SystemsMetal roof with

no ceiling - R0900 (reflective)

Metal roof with no ceiling - R0900

(non-reflective)

Metal roof with suspended ceiling -

R1000 (100-600mm cavity)

Metal roof with suspended ceiling -

R1000 (> 600mm cavity)

System Illustrations

BCA/NCC Compliant

Year

Climate Zone

Heat Direction

Solar Absorbance#

Required Total R-Value

[RT]

BCA/NCC Compliant Insulation Product Note: Thinner blanket must be on top for dual blanket applications

2010 to

2011

Zone 1,2,3

Inwards

Very Light R3.2 Anticon SB110 RM2.5 Anticon SB145 RM3.6 Anticon SB100 RM2.3 Anticon SB100 RM2.3

Light R3.7 Anticon SB130 RM3.0Anticon SB110 + Roof blanket 60mm RM3.8

Anticon SB100 RM2.3 Anticon SB110 RM2.5

Dark R4.2 Anticon SB145 RM3.6Anticon SB130 + Roof blanket 60mm RM4.3

Anticon SB100 RM2.3 Anticon SB130 RM3.0

Zone 4,5,6

Inwards All R3.2 Anticon SB110 RM2.5 Anticon SB145 RM3.6 Anticon SB100 RM2.3 Anticon SB100 RM2.3

2012to

2014

Zone 1,2,3, 4&5

Inwards

Very Light R3.2 Anticon SB110 RM2.5 Anticon SB145 RM3.6 Anticon SB100 RM2.3 Anticon SB100 RM2.3

Light R3.7 Anticon SB130 RM3.0Anticon SB110 + Roof blanket 60mm RM3.8

Anticon SB100 RM2.3 Anticon SB110 RM2.5

Dark R4.2 Anticon SB145 RM3.6Anticon SB130 + Roof blanket 60mm RM4.3

Anticon SB100 RM2.3 Anticon SB130 RM3.0

Zone 61 Inwards All R3.2 Anticon SB110 RM2.5 Anticon SB145 RM3.6 Anticon SB100 RM2.3 Anticon SB100 RM2.3

2010 to

2014

Zone 71 Outwards All R3.7 Anticon SB145 RM3.6 Anticon SB145 RM3.6 Anticon SB130 RM3.0 Anticon SB130 RM3.0

Zone 81&2 Outwards All R4.8Anticon SB130 + Roof blanket 60mm RM4.3

Anticon SB145 + Roof blanket 60mm RM4.9

Anticon SB110 + Roof blanket 60mm RM3.8

Anticon SB110 + Roof blanket 60mm RM3.8

Note: Refer to the ICANZ handbook for detailed descriptions of roof constructions and thermal calculation parameters. Note that quoted R-Values are based on reflective Thermofoil facings and are not applicable to decorative facings unless stated – please contact Bradford for assistance when calculating R-Values for these materials. Refer to the relevant BCA/NCC Solar Absorbance table for the buildings roof colour. 1. For condensation control, use of roof sarking products such as EnvirosealTM ProctorWrapTM High Tensile Roof (HT-R) is recommended. Whilst all lap joints and penetrations are to be taped using Proctor Plain tape. Excludes high humidity applications (eg. swimming pools) – please consult Bradford. 2. Please consult Bradford for zone 8 projects.

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ULTIMATE PERFORMANCE SERIES – R-VALUE BY PURLIN SIZEFor applications that require R-Values beyond code compliance or simply the flexibility to achieve an R-Value for a non code compliant

application, Table 3 below highlights the maximum thermal performance that can be achieved for each Metroll purlin height. By

selecting the required R-Value and purlin depth, the base material thickness (BMT) and purlin spacing can then be customised based

upon the projects structural requirements. Impressive thermal insulation R-Values up to RM5.5 (inwards for a roof with no ceiling) can

be achieved with the Bradford Anticon SB insulation which has been specifically developed to complement the SafeBridge system.

SYSTEM COMPLIANCE – ADVANCED TESTING PROGRAMSafeBridge is an innovative roofing system that has undergone hundreds

of hours of development and testing to ensure it performs in accordance

to its published specifications and the building code. As part of this

program, the SafeBridge system has undergone experimental temperature

analysis using a roof section to validate 3 dimensional theoretical

modelling of heat transfer calculations. This complex process was used

to develop the new generation of Bradford Anticon SB thermal insulation

used in the SafeBridge system to ensure effective management of

condensation across all climate zones through the purlin and adjacent

materials (roof sheet, mesh, screw, insulation and thermal break tape).

Modification of this system by the substitution of similar or alternative

products cannot be guaranteed to perform in accordance with the stated

information provided in this and other documentation. Please note that

the design of high humidity applications (such as indoor swimming pools)

should always be reviewed with Bradford during the design phase.

Table 3. ULTIMATE PERFORMANCE SERIES

Roof SystemsMetal roof with

no ceiling - R0900 (reflective)

Metal roof with no ceiling - R0900

(non-reflective)

Metal roof with suspended ceiling -

R1000 (100-600mm cavity)

Metal roof with suspended ceiling - R1000 (> 600mm

cavity)

System Illustrations

Metroll Purlin Size

Bradford InsulationMaterial R-Value

[RM]

Heat Direction

Maximum Total R-Value [RT]Note: Thinner blanket must be on top for dual blanket applications

150mm Anticon SB100 R2.3Inwards R3.0 R2.4 R4.2 R3.5

Outwards R2.7 R2.6 R3.2 R3.2

150mm Anticon SB110 R2.5Inwards R3.2 R2.6 R4.4 R3.7

Outwards R2.9 R2.8 R3.4 R3.4

200mm Anticon SB130 R3.0Inwards R3.7 R3.1 R4.9 R4.2

Outwards R3.4 R3.3 R3.9 R3.9

200mm Anticon SB145 R3.6Inwards R4.3 R3.6 R5.5 R4.7

Outwards R4.1 R3.9 R4.6 R4.6

250mmAnticon SB110 + Roof

blanket 60mmR3.8

Inwards R4.4 R3.8 R5.7 R4.9

Outwards R4.3 R4.2 R4.8 R4.8

300mmAnticon SB130 + Roof

blanket 60mmR4.3

Inwards R4.9 R4.3 R6.1 R5.4

Outwards R4.8 R4.7 R6.3 R5.3

300mmAnticon SB145 + Roof

blanket 60mm R4.9

Inwards R5.5 R4.9 R6.7 R5.9

Outwards R5.4 R5.3 R6.0 R5.9

Figure 3. Complex Thermal Modeling of Temperature

Analysis Across Roof Structure

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INSTALLATION DETAILS

Step 6: Roll thermal breath tape along the purlin to prevent thermal bridging.

Step 5: Attach wire to bridging (same as step 3). Area is now safe with fall protection installed.

Step 2: Screw off the bridging. Bridge bar fixing uses a standard Metal-Tek screw through both bars, and final screw in centre of bridge bar secures the system.

Step 1: Install the bridging. Telescopic bridge bars fit all purlin spacing and the punched SafeBridge keyway accepts bridge bars from each side.

Step 8: Lay roof on purlins and screw off.Step 7: Roll out insulation. Safety wire and insulation components are cradled within the purlins, hence leaving the purlins visible as a working surface/footing area.

Step 4: Pull wire on wire pulley. Improved safety is achieved by utilising a unique ‘trolley system’ to lay the safety mesh between the purlins – this allows workers to remain safely secured below the roof surface, rather than above it on the open roof.

Step 3: Attach wire to bridging. Safety mesh should be tied to bridge with no side lap joints, this reduces installation time as well as the overall amount of material required as the mesh does not need to cover the purlin and overlap by 150mm.

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(c) SafeBridge 2013

(c) SafeBridge 2013

(c) SafeBridge 2013

(c) SafeBridge 2013

(c) SafeBridge 2013

(c) SafeBridge 2013

(c) SafeBridge 2013

8.0Installation details for a typical SafeBridge application, excludes requirements for condensation control or for an aesthetic appearance, where sarking products may be required.

9.0

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8.0SPECIFYING SAFEBRIDGEWhen specifying SafeBridge, the following components have

been tested and recommended to achieve the performance

standards specified in this document:

Metroll SafeBridge Purlins and Bridge Bars

Bradford SafeBridge Anticon SB[size] RM[value] centrally

faced with Bradford Thermofoil Medium Duty [plus optional

additional specification - laid on top of Bradford Thermoplast

993 White - laid separately]

Bradford Thermal Break Tape 10mm

Australian Mesh SB[width] SafeBridge Safety

Mesh supplied by Bradford Insulation (installed between the

purlins)

ITW Buildex Metal Tech Screws

Metal roof sheet to suit

SAFETY CREDENTIALS

Safety is key to the SafeBridge system – reduce risk further by

utilising the SafeBridge Mesh Trolley which allows installation

of the safety mesh from below the roof surface from the safety

of a scissor lift. SafeBridge Mesh Trolley needs to be purchased

separately and is available from Metroll.

FINALIST

2011 WINNER Best solution of an OHS&E Specific Workplace Risk Award

2010 FINALIST Safe Work Australia Awards

2010 WINNER Safety Product Solution of the Year QLD Worksafe Awards

9.0The SafeBridge roofing system represents an evolutionary step forward in the construction process of metal framed roofing and

has been acknowledged as a safer roofing system by some of the peak safety bodies of Australia. In 2010 SafeBridge won Safety

Product of the Year in the Queensland Work Safe Awards and shortly after was a finalist in the 6th Annual National Safe Work

Australia Awards. The following year, SafeBridge was recognised by winning the National Safety Council of Australia Awards Best

Solution of an OHS&E Specific Workplace Risk Award 2011.

SafeBridge PAGE 7

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For more information call 1300 850 305 or visit www.bradfordinsulation.com.au

CSR Bradford Locked Bag 1345 North Ryde BC NSW 1670

CSR Bradford is a business division of CSR Building Products Limited ABN 55 008 631 356

The contents of this brochure are copyright protected and may not be reproduced in any form without prior written consent of CSR Bradford. Recommendations and advice regarding the use of the products described in this brochure are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR Bradford website for the latest revision of this document. The purchaser should independently determine the suitability of the product for the intended use and application.68

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PRODUCT DETAILS10.0

SAFEBRIDGE ROOFING SYSTEM

ProductBase

Blanket R-Value

Nominal Thickness

Min. Purlin Height

FacingStd Size

(m)x(mm)Suitable for std purlin spacing

Product Code

Anticon 100 SB R2.3 100mm 150mm Med Duty 10m x 620mm 610mm 112516

Anticon 100 SB R2.3 100mm 150mm Med Duty 10m x 920mm 910mm 111687

Anticon 100 SB R2.3 100mm 150mm Med Duty 10m x 1220mm 1210mm 105506

Anticon 100 SB R2.3 100mm 150mm Med Duty 10m x 1370mm 1360mm 126662

Anticon 110 SB R2.5 110mm 150mm Med Duty 10m x 620mm 610mm 122533

Anticon 110 SB R2.5 110mm 150mm Med Duty 10m x 920mm 910mm 110172

Anticon 110 SB R2.5 110mm 150mm Med Duty 10m x 1220mm 1210mm 112503

Anticon 110 SB R2.5 110mm 150mm Med Duty 10m x 1370mm 1360mm 112504

Anticon 130 SB R3.0 130mm 200mm Med Duty 10m x 620mm 610mm 112532

Anticon 130 SB R3.0 130mm 200mm Med Duty 10m x 920mm 910mm 111688

Anticon 130 SB R3.0 130mm 200mm Med Duty 10m x 1220mm 1210mm 107982

Anticon 130 SB R3.0 130mm 200mm Med Duty 7.5m x 1370mm 1360mm 126663

Anticon 145 SB R3.6 145mm 200mm Med Duty 7.5m x 620mm 610mm 123385

Anticon 145 SB R3.6 145mm 200mm Med Duty 10m x 920mm 910mm 126753

Anticon 145 SB R3.6 145mm 200mm Med Duty 7.5m x 1220mm 1210mm 126665

Anticon 145 SB R3.6 145mm 200mm Med Duty 6.5m x 1370mm 1360mm 103936

SAFEBRIDGE ROOF INSULATION – MESH

SafeBridge Safety Mesh50m x 600mm

(300 x 150)610mm 105276

50m x 900mm (300 x 150)

910mm 104052

50m x 1200mm (300 x 150)

1210mm 104032

50m x 1350mm (300 x 150)

1360mm 104048

SafeBridge Safety Mesh with PVC50m x 600mm

(300 x 150)610mm 116854

50m x 900mm (300 x 150)

910mm 104054

50m x 1200mm (300 x 150)

1210mm 104046

50m x 1800mm (300 x 150)

1360mm 118289