Preprufe® PlusApplication Manual

VAR Cover Preprufe® Manual Handbook.indd 2 27/02/2015 16:00

&of applying Preprufe® Plus

do'sdon'ts

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VAR Cover Preprufe® Manual Handbook.indd 3 27/02/2015 16:00

Pre

pru

fe® -

So

me

Do

’s &

Do

n’t

s Don’ts 1. Do not use a protection screed over

Preprufe® Plus The membrane isdesigned to bond to structural concrete.

2. Do not use as pond or tank liner.3. Do not use Preprufe® Plus for installation

in concrete infilled hollow block wallconstruction. Preprufe® Plus is designedfor use with reinforced concrete designedfor a maximum crack width of 0.6mm.

4. Avoid curved shapes for permanentformwork and blinding otherwiseextensive cutting and folding of thePreprufe® Plus will be necessary. Angularformwork will generally be easier foruse with Preprufe® Plus.

5. Do not try to bond the selvedge if thePreprufe® Plus is wet. A hot air gun canbe used to dry the selvedge.

6. Do not use staples to fix Preprufe® Plus totemporary formwork.

7. Do not allow water to pond beneath thePreprufe® Plus prior to concreting - can liftto the membrane and damage the joints.

8. Do not ‘mix & match’ Grace waterproofingmembranes with membranes from othermanufacturers except with prioragreement with both companies.

9. Do not allow the vibrator to come intocontact with Preprufe® Plus - can damagethe membrane.

10. Do not apply Shotcrete to Preprufe® Plus.

Do’s1. Use flush fixings to fix Preprufe® Plus to permanent formwork.2. Place flush fixings through the Preprufe® Plus selvedge to enable them to be covered by the next overlapping sheet.3. Where fixings are made to secure vertical Preprufe® Plus to temporary formwork, 40 mm clout nails should be used, 20 mm being left exposed to provide an anchor for the nail during striking of the formwork.4. Seal fixings with 2 layers of Preprufe® tape where fixings have been placed through the membrane into blinding but not overlapped.5. Firm fold Preprufe® Plus at 90° changes in direction to allow maximum contact with the substrate.6. Extend the Preprufe® Plus beyond the starter bars rather than the edge of the stop-end formwork to ensure easy overlapping of the adjacent bay Preprufe® Plus. 7. Stop the Preprufe® Plus minimum 50 mm below top of concrete surface on temporary (removable) formwork.8. Use Preprufe® Tape at all overlaps including the adhesive selvedge when the ambient application temperature is expected to fall below 0°C.9. Seal ‘Fish Mouth’ openings i.e. where the overlapping Preprufe® Plus has not stuck to the layer beneath should be sealed, with Preprufe® Tape.10. Air lance debris away immediately prior to concreting unless there has been a heavy build up of mud on the Preprufe® Plus in which case use a high pressure water hose and air lance.11. Repair damage to the Preprufe® Plus membrane before concreting.12. Remove surplus water from the excavation to be concreted.13. Check all the release liner has been removed before concreting.14. Remove grout spillage on Preprufe® Plus as it can locally inhibit the bond of fresh concrete placed on it.15. Ensure that correct concreting and vibrating practices are observed during concreting.16. Concrete with pfa, additives and admixtures can be used with Preprufe® Plus.17. Wait until the concrete strength is 10 N/mm2 before striking the formwork.

PagesIntroduction Applications 4 IndependentAssessments 5 Advantages 5 Limitations 6 SystemComponents 6 MaterialProperties 8

HealthSafety&Environmental Issues FirstAidMeasures 10 Fire-fightingMeasures 10 HandlingandStorage 10 EnvironmentalEffects 10 PersonalProtectionEquipment(PPE) 11

Installation-General Deliverytosite 12 MaterialStorage 12 SubstratePreparation 13 RemovingPreprufe®Plusfromthebox 15 Tools/Materialsrequired 17

InstallationforSlabs Method1-VerticalPreprufe®<900mm 18 Installation-Internal&External 20 Method2-VerticalPreprufe®>900mm 22

Installation–Horizontal ApplicationSequence 24 EndLapsandCutEdges 26

Penetrations 28

MembraneRepair 29

Installation–VerticalApplication ApplicationSequence 30 PlacementonVerticalPileWalls 31

Installation–DoubleSidedFormwork Woodenformwork 32 Metalformwork 34 Preprufe®PlusPreparationwhen 35 Preprufe®800PA/Bituthene®areused onWalls InspectionProcedures 36 PlacementofReinforcingSteel 36 PlacingofConcrete 37 RemovalofFormwork 37

TroubleShooting Examples 38 Details 42

InstallationChecklist 58

Co

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nts

3

Preprufe®PluswaterproofmembranesarecompositesheetscomprisingarobustHDPEbacking,apressuresensitiveadhesiveandatrafficableweatherresistantcoating.Uniquely,themembranedevelopsacontinuousadhesivebondtoconcretepouredagainstit.Thispreventswatermigrationbetweenthestructureandthemembrane,substantiallyreducingtheriskofleaksandminimisingtheriskofaggressivesaltsinsolutionreachingthestructuralconcrete.

GraceConstructionProductscanprovidealistofapplicators,trainedbyGraceintheinstallationofPreprufe®Plus.

Applications•Waterandvapourproofingallbasement gradestoBS8102:1990•Waterproofingcivilengineering substructures.•Methane,carbondioxideandradon gasprotectioninexcessofthestandard membranerequirementsinBRE Reports211(Radon)and212(Methane andCarbonDioxide).•Protectionofreinforcedconcrete structuresinaggressiveground conditions.

Intr

od

uc

tio

n

4 5

Intr

od

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n

IndependentAssessments•BBACertificateNo.97/3325•CECertificateNo.09/F017•MottMacDonaldSpecialServices ReportMay2001•NationalCertificationsavailable

Advantages•Canbeusedbeneathfoundationslabs andwithsingleordouble-sided formworksystems.•Sealsadhesivelytoconcretecast againstit.•Easytohandleandinstallwithout specialcornerpieces.•Alljointshavedoublesidebonded ‘selvedge’orPreprufe®Tapeoverlapsfor leakprotection.•Unaffectedbygroundwater contaminants,pondedwaterorwet/dry cycling.•Smoothsurfacemembrane–site contaminantseasilyremoved.•Excellentchemicalresistance–protects structurefromsalts,sulphateattackand mostcontaminantslikelytobefoundin theground.•Requiresnopriming,surface conditioningorprotectionscreeds.•Simplyinstalledwithoutanymechanical liftingdeviceorspecialequipment.•Noreleaseliner.Kickoutroll.

4 5

Intr

od

uc

tio

n Limitations•Preprufe®Plusshouldnotbe permanentlyexposedtosunlight.•Preprufe®Plusisnotintendedforroof underlaymentsorthroughwallflashing applications.•Preprufe®Plusshouldnotbeusedasa pondortankliner.•Preprufe®Plusshouldnotbeused betweenconcreteinfilledhollowblock walls.•Preprufe®Plusisnotintendedtoprovide themainwaterproofingforexpansion joints.•Preprufe®Plusisnotintendedfor negativesidewaterproofingapplications.•Preprufe®Plusshouldnotbeusedwhere in-servicetemperatureswillexceed 65°C.•Pourconcretewithin56days(42days inhotclimates)ofinstallationofthe membrane.

SystemComponents

6 7

AdhesivesurfaceofPreprufePlusMembrane

Intr

od

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n

6 7

Preprufe®PlusZipLap™havebeentestedforhydrostaticheadresistancetoinexcessof70m(0.7MPa).

HDPEfilm

Preprufe®ZipLap™

Mate

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Prod

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uni

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Prep

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300R

Plu

s • B

enea

th s

ub-s

truct

ure

slabs

> 3

50 m

m th

ick.

• Hor

izont

al a

nd v

ertic

al a

pplic

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ns w

here

risk

of m

embr

ane

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m re

info

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lace

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t, ba

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or o

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site

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con

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igh.

1.2

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31

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s• B

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slabs

< 3

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• Ver

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ly, a

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walls

with

sin

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or d

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form

work

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0.8

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m x

36.

5 m

42 m

242

kg

Prep

rufe

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Tape

LT

• App

licat

ions

at –

5°C

to +

30°

C.• T

apin

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ll end

laps

, cut

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nd d

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ling.

0.7

mm

100

mm

x 1

5 m

2 kg

Prep

rufe

®

Tape

HC

• App

licat

ions

at +

10°

C to

+ 5

0°C.

• Tap

ing

roll e

nd la

ps, c

ut e

dge

laps

and

det

ailin

g.0.

7 m

m10

0 m

m x

15

m2

kg

8 9

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M• L

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for d

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term

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, pile

cap

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d pi

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pe

netra

tions

. App

licat

ion

tem

pera

ture

5°C

and

risin

g.5.

7 kg

Gra

ce

Prot

ectio

n Bo

ard

• Opt

iona

l pro

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ion

of P

repr

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60R

appl

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in d

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m x

2 m

5 kg

per

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Adco

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550

MI/T

-MI

• Hyd

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ater

stop

for a

dded

sec

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of

con

cret

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ints

5 m

rolls

6 ro

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arto

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Adco

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T• H

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for u

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for m

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8 9

SafetydatasheetsforPREPRUFE®PLUS&PREPRUFE®TAPESarenotrequired,sincetheyarefinishedgoods.Nevertheless,customersareprovidedwiththeinformationbelowtoassistwiththesafeuseoftheproduct.SafetydatasheetsforotherGraceproductsareavailableonourwebsite:www.grace.comFirstAidMeasures•EyeContact:Directcontactwithadhesive layermaycauseirritation.Rinseopened eyeforseveralminutesunderrunning water.Seekimmediatemedicaladvice.

Fire-fightingMeasures •Suitableextinguishingmedia:Water, foam,andcarbondioxide.•Specialexposurehazards:Donot breathesmoke.•Specialequipmentforfire-fighters:Self containedbreathingapparatus.

HandlingandstorageGlovesshouldbeworntoreducehandcontamination.Anytransferofadhesivetoskinshouldberemovedwithsoapandwater-notsolvent.•Storeincool,drybuildingtoprevent physicaldamage.

EnvironmentaleffectsNotexpectedtobedangerousfortheenvironment.•SafetyInstructionsareonthesideof thePreprufe®cardboardcontainerboxes andonthemaincanofBituthene®LM.

He

alt

hS

afe

ty&

Envir

on

me

nta

lIs

su

es

10 11

He

alt

hS

afe

ty&

Envir

on

me

nta

lIs

su

esPersonalProtectionEquipment

(PPE)MinimumrecommendedPPEforinstallersofPreprufe®Plus/Preprufe®Tape/Adcor®500S/T/Adcor550MI/T-MI:•Safetyhelmet•Safetyshoes•Safetyglasses•WherePreprufe®isappliedinbright sunlightconditions,itisadvisablethat tintedsafetyglassesbeusedby installers•Gloves

MinimumrecommendedPPEforapplicationofBituthene®LMinnon-confinedareas:•Longsleevedoveralls•Safetyhelmet•Safetyfootwear•Safetyglasses/spectacles•Gloves-longgauntlettype•RefertoSafetyDataSheet

FullboxesofPreprufe®160RPlusand300RPlusrequiretwomentolift.Alternativelymechanicalliftingequipmentcanbeused.

WetPreprufe®withitsplasticreleaselinerinplacecanbeslipperytowalkon.

10 11

Insta

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12 13

Deliverytosite

NormallyPreprufe®Plusisdeliveredtositeshrinkwrappedonpalletsandwillrequiredmechanicalequipmentforoffloadingatsite.However,smallordersmaybedeliveredasindividualrolls.

MaterialStorageStorePreprufe®Plusrollsvertically.Sequencedeliveriestoavoiddelays,butminimiseon-sitestorage.Selectasafe,coveredsecurelocationformaterialstorageforeachday’suseinalocationthatwon’trequiremovementasecondtime.Donotstackpalletsofwaterproofingonthejobsite.Providecoverontopandallsides.

Insta

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12 13

SubstratePreparation

Suitablesubstratesinclude:•concreteblinding•wellcompactedsandonrolledcrushed stone•rigidinsulation•clayheaveboards•permanentformwork•removableformwork•19mmplywood•Plasticflutedprotectionboard•Hydroduct®drainagesheets•Adjacentsub-structures

Itisessentialthatthesubstrateissoundandsolidtoensurenomembranemovementduringtheconcretepour.

CompactedSandBlinding

ConcreteBlinding

Insta

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14 15

Substratesshouldbeuniformwithnogapsorvoidsgreaterthan12mm.Wheretheseexistfillwithamaterialofsufficientstrengthtosupportthemembrane.Allsubstratesmustbefreeoflooseaggregateandsharpprotrusions.

Wherepossible,avoidslopingorroundedconcreteblinding,anyrequiredchangeinblindinglevelmusstbeangular.

Incrushedstoneapplications,itisimportanttocreateasoundandsolidsubstratearound“throughslab”penetrationstoeliminatemovementduringtheconcretepour.Excessivemovementmayjeopardisethewaterproofingintegrityaroundthepenetration.Thereforegroutaroundthepenetrationpriortoinstallingthemembrane.

Thesurfacedoesnotneedtobedry,butstandingwatermustberemoved.Substratesmusthavesufficientrigiditynottomoveduringtheconcretepour.Boardedsubstratesmustbeclosebuttedtoprovidesupportandnotmorethan12mmoutofalignment.

Insta

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14 15

2

RemovingPreprufe®PlusfromtheboxThefollowingsequenceindicatestherecommendedmethodforremovingthePreprufe®Plusfromitsbox.

1

2

Insta

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on

-G

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l

16 17

3

4

Tools/MaterialsRequired•Heavydutylaproller•Utilityknifewithretractableblade (blademustbesharp).•Tapemeasure•Cottoncleaningcloths•Plywoodorsimilarcuttingboard•Thinmetalstraightedge•Chalkline•Broom•2metrelongpipeorheavybroomhandle•Spiralpaddleformixing Bituthene®LM•Heavy-dutylowspeed

(500rpm)drill•Roundnosetrowelorspatula•Requiredprotectionand/ordrainage boardsandotherancillaryproducts

Preprufe®Plusmembranesaresuppliedinrolls1.17mwidewithdualadhesivePreprufe®ZipLaps™onbothedgestoenablefullybondedlapsbetweenadjacentrolls.AllotherlapsmustbetapedwithPreprufe®Tape.

Insta

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16 17

ApplicationSequenceforSlabs-Method1-verticallyappliedPreprufe®<900mm

1.Forminternal/externalcornersections

Formingcorners-refertopage20

2.Installhorizontal/verticalinterface.

Insta

llati

on

Fo

rS

lab

s

2

18 19

2

1AInternal

1BExternal

2

Insta

llati

on

Fo

rS

lab

s

3.Placehorizontallengths

Refertopage24

4.Removereleasefilm

5.Inspect&repairanydamage

5

18 19

3

4

Installation-Internal&ExternalCornersInternalandexternalcornersshouldbeformedasshowninthediagramsreturningthemembraneaminimumof100mmandsealingwithPreprufe®Tape.EnsurethattheapexofthecorneriscoveredandsealedwithTapeandrollfirmly.Creaseandfoldthemembranetoensureaclosefittothesubstrateprofileandavoidhollows.

Insta

llati

on

Fo

rS

lab

s

Internal External

20 21

Preprufe®Tape

Insta

llati

on

Fo

rS

lab

s

20 21

Measure,crease&foldmembrane

Foldinternalcorner&tape

Formexternalcorner&tape

ApplicationSequenceforSlabs-Method2-verticallyappliedPreprufe®>900mm1.Placehorizontallengthsfirst.

2.Forminternal/externalcorners. Refertopage23

3.Installhorizontal/vertical interface-wallpaperfashion.

4.Removereleasefilm

5.Inspect&repairanydamage

Insta

llati

on

Fo

rS

lab

s

5

22 23

4

Insta

llati

on

Fo

rS

lab

sCornersInternalandexternalcornersshouldbeformedasshowninthediagramsreturningthemembraneaminimumof100mmonthehorizontalandsealingwithPreprufe®Tape.EnsurethattheapexofthecorneriscoveredandsealedwithTapeandrollfirmly.Creaseandfoldthemembranetoensureaclosefittothesubstrateprofileandavoidhollows.

Internal External

22 23

Preprufe®Tape

Insta

llati

on

–H

ori

zon

tal Installation–Horizontal

Placethemembranewiththegreenzipstripfacingtowardstheconcretepour.Endlapsshouldbestaggeredtoavoidabuildupoflayers.Leavegreenandbluezipstripsonthemembraneuntiloverlapprocedureiscompleted.Accuratelypositionsucceedingsheetstooverlaptheprevioussheet3in.(75mm)alongthemarkedselvedge.Peelbackandremoveboththegreenandbluezipstripsintheoverlapareatoachieveanadhesivetoadhesivebondattheoverlap.Ensureacontinuousbondisachievedwithoutcreasesandrollfirmlywithaheavyroller.Oncompletionoftheinstallation,ensurecompleteremovaloftheplasticzipstripsfromalloverlapsandtape.

WheninstallingPreprufe®Plusincoldormarginalweatherconditions(<0°C)theuseofPreprufe®TapeLTisrecommendedatalllapsanddetailing.Preprufe®TapeLTshouldbeappliedtocleandrysurfacesandthereleaselinermustberemovedimmediatelyafterapplication.

24 25

Insta

llati

on

–H

ori

zon

tal

24 25

En

dL

ap

sa

nd

Cu

tE

dg

es EndLapsandCutEdges

Overlapallrollendsandcutedgesbyaminimum75mmandensuretheareaiscleanandfreefromcontamination,wipingwithadampclothifnecessary.

AllowtodryandapplyPreprufe®Tapecentredoverthelapandrollfirmly.Removebluereleaseliner.ReferalsotoPreprufe®PlusStandardDetails.

26 27

En

dL

ap

sa

nd

Cu

tE

dg

es

26 27

Pe

ne

trati

on

s PenetrationsTosealaroundpenetrationssuchasservicepipes,pileheads,reinforcingbars,lighteningconductorsetc.markandcutthemembranetighttothepenetration.Ifthemembraneisnotalignedwithin12mmofthepenetration,applyPreprufe®Tapelappedontothemembraneandbuttedtighttothepenetration.ForpipepenetrationswrapthepipewithPreprufe®Tape.MixandapplyBituthene®LMaroundthepenetrationusingafillettoprovideawatertightsealbetweenthePreprufe®PlusmembraneandTape.ReferalsototheGracemanual,DetailDrawings-WaterproofingReinforcedConcreteStructures,availableonrequest.

28 29

MembraneOutsidePourAreaLayPreprufe®Plusjustbeyondanyreinforcementstarterbarstoensureeasyaccessforfurtheroverlaps.Wherethisisnotachievablethedirectionofmembraneapplicationmaybechangedtosimplifyoverlapprocedure.

Me

mb

ran

eR

ep

airMembraneRepair

Inspectthemembranefordamagebeforeinstallationofreinforcementsteel,formworkandfinalplacementofconcrete.Cleanbyjetwashingifrequired.

Wipetheareawithadampclothtoensuretheareaiscleanandfreefromdust,andallowtodry.Forminorrepairs,applyPreprufe®Tapecentrallyoverthedamagedareaandrollfirmly.ForlargerrepairsuseapatchofPreprufe®PlusandtapealledgeswithPreprufe®Tape.RemoveplasticreleaselinerfromTape.

Whereexposedselvedgehaslostadhesionorlapshavenotbeensealed,ensuretheareaiscleananddryandoverbandwithPreprufe®Tapeandrollfirmly.

28 29

Insta

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on

–V

ert

ica

l Installation–VerticalApplythemembranewiththegreenzipstripfacingtowardstheconcretepour.Mechanicallyfastenthemembraneverticallyusingflatheadedfixingsappropriatetothesubstrate.Themembranemaybeinstalledinanyconvenientlength.Securethetopofthemembraneusingabattenorfixings50mmbelowthetopedge.Usefixingsattypically600mmcentrestosecurethemembraneflatagainstthesubstrate.Fixingscanbemadethroughtheselvedge,thisallowsfirmlyrolledoverlaps,whicharecoveredbythesubsequentstripsofPreprufe®Plus.AnyexposedfixingsshouldbepatchedwithPreprufe®Tape.Peelbackandremoveboththegreenandbluezipstripsintheoverlapareatoachieveanadhesivetoadhesivebondattheoverlap.Ensureacontinuousbondisachievedwithoutcreasesandrollfirmly.Oncompletionoftheinstallation,completely remove the plastic zip strips from all overlaps and tape.

30 31

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–V

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lPlacementonVerticalPileWallsThePreprufe®Plusisfixedthroughtheselvedgeintotheregulariseddiaphragm/secantwallanddoesnotrequireanyseparationboardunlessusedtofaceupthewallingwhereitisroughandfullofvoidsanddepressions.BoardcanbeplywoodorhighqualityfibreboardcapableoftakingtheweightofPreprufe®Plusfixingsandtheweightofconcreteduringthepour.

Similarly,sheetpilingwillrequirethepriorinstallationofplywoodorhighqualityfibreboardorconcreteinfillbeforeinstallingPreprufe®Plusverticallyagainstthepiling.

30 31

Insta

llati

on

–D

ou

ble

Sid

ed

Fo

rmw

ork Installation–DoubleSided

FormworkWoodenformwork:1. Applythemembranewiththegreen zipstripfacingtowardstheconcrete pour.2. Cutlengthsofmembranetoheightof formworkless50mm.3. Alignthefirstpieceofmembrane againsttheformworkedgeand50mm belowthetopoftheformwork.4. Nailthemembraneinplaceatthetop oftheformworkusing40mm galvanisedcloutnailsat300mm centres.Thenailheadsshouldbeleft protrudingaminimum20mm.(This willenableencapsulationofthenail headwhentheconcreteispoured).5. Atthemiddleandbottomofthe formworkcutandapply150mmx150mm squarepatchesofBitustik™4000 doublesidedbituminoustapetoboth edgesofthemembrane.6. TheBitustik™4000patcheswill partiallyadherethemembranetothe formworkandkeepitflatduringthe concretepour.7. Alledgelapsshouldbeformed usingtheself-adhesiveselvedgeon themembrane.8. Anycutedgelapsandendlapsshould besealedwithPreprufe®Tape.9. Oncompletionoftheinstallation, completelyremovetheplasticzip stripsfromalloverlapsandtape.10.Placeformwork,pourandvibrate concrete.11.Removeformworkwhenconcretehas aminimumstrengthof10N/mm2.

32 33

Insta

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on

–D

ou

ble

Sid

ed

Fo

rmw

ork

.

20 mm

50 mm

40 mm galvanisedclout nail withlarge head

nail bentflush tomembrane

PreprufePlus

12.Afterremovalofformwork: a.Useahammertobendall protrudingnailpointsflushto membranesurface. b.FilltiebarholeswithBETEC®350 orGraceapprovedequivalent. Allow48hourstodrythenprime withPreprufe®SC1andcoverwith cutpatchesofPreprufe®800PA selfadhesivemembrane,150mmx 150mm. c.LapPreprufe®Plusmembraneat bottomofwalltoslabedge membraneusingPreprufe®Tape. d.Formagreedterminationdetailat groundlevelusingBituthene®LM.

.

20 mm

50 mm

40 mm galvanisedclout nail withlarge head

nail bentflush tomembrane

PreprufePlus

Preprufe®Plus-DoubleSidedFormwork(wooden)TerminationDetailBeforeFormworkRemoval

Preprufe®Plus-DoubleSidedFormwork(wooden)TerminationDetailAfterFormworkRemoval

32 33

Insta

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ou

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Sid

ed

Fo

rmw

ork

34 35

Installation–DoubleSidedFormworkMetalformwork:1. InstallPreprufe®Plusasforwooden formworkexcept:2. AttopofmetalformworkfixPreprufe® Plusmembranetoflangeofformwork systemusingboltsortiewire.3. Onremovalofformworkcuttheexcess unbondedmembraneatthetopofthe wallflush,usingastraightedgetoavoid damagingthebondedmembrane.

Preprufe®800PApostappliedtowalls

inconjunctionwithPreprufe®Plusbelowslabs

Bituthene®postappliedtowallsin

conjunctionwithPreprufe®Plusbelowslabs

5

43

2

1A

2

1B

43

5

Pre

pru

fe®8

00

PA

/B

itu

the

ne

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all

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Pre

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rep

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n

34 35

Preprufe®PlusPreparationwhenPreprufe®800PAorBituthene®areusedonWallsInspectthePreprufe®Plusaroundtheperimeteredgeoftheconcreteslab.Identifyanyexposednon-selvedgeoverlapsinPreprufe®Plus.Toensurecontinuityofthefullybondedsystem,carefullycutandremovea75mmtriangularpieceofthetopflapofPreprufe®Plusonly,asshownshadedinthestandarddetail,‘SlabPerimeterDetail–NonSelvedgeLap.’

25

Do not prime Preprufe R with

B2 Primer

Bituthene 8000 on primed concrete

surface

Preprufe

BitutheneLM

Adcor500S

75 mm overlap

75 mm

Taped non-selvedge lapPoured Concrete Remove formwork Cut and remove shaded piece beforeapplying Bituthene

1234

1

2

4

Slab Perimeter Detail

25

Do not prime Preprufe R with

B2 Primer

Bituthene 8000 on primed concrete

surface

Preprufe

BitutheneLM

Adcor500S

75 mm overlap

75 mm

Taped non-selvedge lapPoured Concrete Remove formwork Cut and remove shaded piece beforeapplying Bituthene

1234

1

2

4

Slab Perimeter Detail

PerimeterDetailforNon-SelvedgeLap

Preprufe®800PAonprimedconcretesurfaceBituthene®onprimedconcretesurfaceBituthene®LMDonotprimePreprufe®PluswithPrimerPreprufe®PlusAdcor®500S/T/Adcor®550MI/T-MI

1A

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1B

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36 37

InspectionProceduresPreprufe®Plusapplication’sshouldbeinspectedoncompletionofaspecificareabeforeplacinganyreinforcingsteel.AnydamagetothemembranesystemshouldbemadegoodusingPreprufe®TapeoroversizepatchingwithPreprufe®Plus.

Duringplacingofreinforcingsteelanydamageshouldbeidentifiedandmadegoodwhileaccesstothemembraneisrelativelyeasy.Oncompletionofreinforcingplacementanotherinspectionshouldoccurandanydamagemadegood.

ItshouldbenotedthatuseofanairlancetoblowoutdebrispriortopouringconcreteisagoodidentifierofpoorlybondedPreprufe®Tape,andoverlaps.AfurtherapplicationofPreprufe®Tapewillberequiredaftertheaffectedareashavebeencleanedanddried.

PlacingofReinforcingSteelBeforeplacingreinforcementensurethatthemembraneapplicationiscontinuous,hasbondedlaps,endlapstaped,penetrationsandpileheadssealedwithBituthene®LMandalltheplasticreleasefilmremovedfromthemembranesandtapes.

Placingofthereinforcementshouldbedonewithcaretopreventdamagetothemembraneusingspreadertypespacerblocksorsimilar,toavoidpointloadingsandpuncturing.Progressiveremovaloftemporarymembraneprotectionusedforaccessandstorageshouldoccurassteelfixingproceeds.LocaliseddisplacementofthePreprufe®adhesivemayoccuraroundspacerblocksbutisnotdetrimentaltomembraneperformance.

PlacingofConcreteEnsuretheplasticzipstripshavebeenremovedfromalloverlapsandTape.

Itisrecommendedthatconcretebepouredwithin56daysofapplicationofthemembrane.WherePreprufe®Plusisusedinhotclimates,themembraneexposureshouldbereducedto42days.

Concretemustbeplacedandcompactedcarefullytoavoiddamagetothemembrane.Neveruseasharpobjecttoconsolidatetheconcrete.

WheregroutsplashesoccuronthePreprufe®Plustheseshouldbeimmediatelyremovedbeforecuringbeginsandthesurfacecleanedwithdampcloths.IfgroutsplasheshaveoccurredandbondedontothePreprufe®Plus,aBitustik™stripshouldbeappliedtothecleanedanddriedundersideofthemembranetoenableanunderlaptobemadeensuringmembranecontinuity.

AlternativelygroutmayberemovedwithametalscrapertogetherwiththetopadhesivelayertoexposethewhiteHDPEbeforejoiningorlappingadjacentsheet.

RemovalofFormworkPreprufe®Plusmembranescanbeappliedtoremovable,slabperimeterformwork,pilecapsetc.Onceconcreteispoured,theformworkmustremaininplaceuntiltheconcretehasgainedsufficientcompressivestrengthtodevelopthesurfacebondwithPreprufe®Plus.

Aminimumconcretecompressivestrengthof10N/mm2isrecommendedpriortostrippingformworksupportingPreprufe®Plusmembranes.Prematurestrippingmayresultinlossofadhesionbetweenthemembraneandconcrete.

Co

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36 37

InspectionProceduresPreprufe®Plusapplication’sshouldbeinspectedoncompletionofaspecificareabeforeplacinganyreinforcingsteel.AnydamagetothemembranesystemshouldbemadegoodusingPreprufe®TapeoroversizepatchingwithPreprufe®Plus.

Duringplacingofreinforcingsteelanydamageshouldbeidentifiedandmadegoodwhileaccesstothemembraneisrelativelyeasy.Oncompletionofreinforcingplacementanotherinspectionshouldoccurandanydamagemadegood.

ItshouldbenotedthatuseofanairlancetoblowoutdebrispriortopouringconcreteisagoodidentifierofpoorlybondedPreprufe®Tape,andoverlaps.AfurtherapplicationofPreprufe®Tapewillberequiredaftertheaffectedareashavebeencleanedanddried.

PlacingofReinforcingSteelBeforeplacingreinforcementensurethatthemembraneapplicationiscontinuous,hasbondedlaps,endlapstaped,penetrationsandpileheadssealedwithBituthene®LMandalltheplasticreleasefilmremovedfromthemembranesandtapes.

Placingofthereinforcementshouldbedonewithcaretopreventdamagetothemembraneusingspreadertypespacerblocksorsimilar,toavoidpointloadingsandpuncturing.Progressiveremovaloftemporarymembraneprotectionusedforaccessandstorageshouldoccurassteelfixingproceeds.LocaliseddisplacementofthePreprufe®adhesivemayoccuraroundspacerblocksbutisnotdetrimentaltomembraneperformance.

PlacingofConcreteEnsuretheplasticzipstripshavebeenremovedfromalloverlapsandTape.

Itisrecommendedthatconcretebepouredwithin56daysofapplicationofthemembrane.WherePreprufe®Plusisusedinhotclimates,themembraneexposureshouldbereducedto42days.

Concretemustbeplacedandcompactedcarefullytoavoiddamagetothemembrane.Neveruseasharpobjecttoconsolidatetheconcrete.

WheregroutsplashesoccuronthePreprufe®Plustheseshouldbeimmediatelyremovedbeforecuringbeginsandthesurfacecleanedwithdampcloths.IfgroutsplasheshaveoccurredandbondedontothePreprufe®Plus,aBitustik™stripshouldbeappliedtothecleanedanddriedundersideofthemembranetoenableanunderlaptobemadeensuringmembranecontinuity.

AlternativelygroutmayberemovedwithametalscrapertogetherwiththetopadhesivelayertoexposethewhiteHDPEbeforejoiningorlappingadjacentsheet.

RemovalofFormworkPreprufe®Plusmembranescanbeappliedtoremovable,slabperimeterformwork,pilecapsetc.Onceconcreteispoured,theformworkmustremaininplaceuntiltheconcretehasgainedsufficientcompressivestrengthtodevelopthesurfacebondwithPreprufe®Plus.

Aminimumconcretecompressivestrengthof10N/mm2isrecommendedpriortostrippingformworksupportingPreprufe®Plusmembranes.Prematurestrippingmayresultinlossofadhesionbetweenthemembraneandconcrete.

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InstallationChecklistBeforePreprufe®PlusInstallationCheck• Substrateisfirm&regular.• Gapsorvoidsgreaterthan12mm filled.• Noprotrusionslikelytodamage membrane.• Substratesweptclean.• Nopondedwater.• Tools&equipmentinplace.• InstallersaretrainedforPreprufe®Plus installation.• Concretingtobewithin56days (42daysinhotclimates)ofPreprufe®

Plusinstallation.

Preprufe®Installation–referpages12to37AfterPreprufe®InstallationCheck• AreaofinstalledPreprufe®Plus.• Preprufe®Plusside&endlapsare sealed.ReinforcewithPreprufe®Tapeif necessary.• Internal&externalcornersaresound &properlytaped.Reinforcewith Preprufe®Tapeifnecessary.• Damagetomembraneisrepaired. Referpages29.• Penetrationsandpile(head)treatment hasbeencorrectlycarriedout.• Temporaryfixingstoformwork.• Ensureplasticzipstripshavebeen removedfromalloverlapsandTape.

Insta

llati

on

Ch

eck

list

58

Insta

llati

on

Ch

eck

list

Placement of Reinforcing SteelCheck• Temporary membrane protection where grinding/welding etc. being carried out.• Temporary protection removed as installation progresses.• Spacer blocks used beneath reinforcement.• Any damage to Preprufe® Plus repaired as installation of reinforcement progresses.• Again all plastic zip strips removed from all overlaps and tape.

Immediately before ConcretingCheck• Damage to Preprufe® Plus & Laps. Repair as necessary.• All plastic zip strips removed.• External waterstop is secured and correctly positioned/sealed against Preprufe® Plus.• Preprufe® Plus self-adhesive laps area intact behind external waterstop.• Membrane surface clear of dust & debris.• Concreting will be within 56 days (42 days in hot climates) of membrane installation.

During ConcretingCheck• Concrete placement procedure will not damage membrane.• Vibrating pokers do not touch the membrane surface.

Formwork RemovalCheck• Concrete has a minimum compressive strength of 10 N/mm2.• Good membrane to concrete adhesion. Repair if necessary.

59

Adcor, Bituthene and Preprufe are registered trademarks of W R Grace & Co.-Conn. Advanced Bond Technology is a trademark of W R Grace & Co.-Conn.

The information given is based on data and knowledge considered to be true and accurate and is offered for the user’s consideration, investigation and verification. Since the conditions of use are beyond our control we do not warrant the results to be obtained. Please read all statements, recommendations or suggestions in conjunction with our conditions of sale including those limiting warranties and remedies which apply to all goods supplied by us. No statement, recommendation or suggestion is intended for any use which would violate or infringe statutory obligations or any rights belonging to a third party. Products included in this publication may be covered by patents.

© 2015 Grace Construction Products Ltd.Printed in England - 02.15 - CSGTV09022015

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