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Preprufe® Application Manual
Grace Construction Products
Grace Construction Products
Do’sDon’ts&
of ApplyingPreprufe®
Please turn over
Pre
pru
fe® -
So
me
Do
’s &
Do
n’t
s Don’ts 1. Do not use a protection screed over Preprufe®. The membrane is designed to bond to structural concrete.2. Do not use as pond or tank liner.3. Do not use Preprufe® for installation in concrete infilled hollow block wall construction. Preprufe® is designed for use with reinforced concrete designed for a maximum crack width of 0.6mm.4. Avoid curved shapes for permanent formwork and blinding otherwise extensive cutting and folding of the Preprufe® will be necessary. Angular formwork will generally be easier for use with Preprufe®.5. Do not try to bond the selvedge if the Preprufe® is wet. A hot air gun can be used to dry the selvedge.6. Do not use staples to fix Preprufe® to temporary formwork.7. Do not allow water to pond beneath the Preprufe prior to concreting - can lift to the membrane and damage the joints.8. Do not ‘mix & match’ Grace waterproofing membranes with membranes from other manufacturers except with prior agreement with both companies.9. Do not allow the vibrator to come into contact with Preprufe® - can damage the membrane.10. Do not apply Shotcrete to Preprufe®.
Do’s1. Use flush fixings to fix Preprufe® to permanent formwork.2. Place flush fixings through the Preprufe® selvedge to enable them to be covered by the next overlapping sheet.3. Where fixings are made to secure vertical Preprufe® to temporary formwork, 40mm clout nails should be used, 20mm 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® at 90° changes in direction to allow maximum contact with the substrate.6. Extend the Preprufe® beyond the starter bars rather than the edge of the stop-end formwork to ensure easy overlapping of the adjacent bay Preprufe®. 7. Stop the Preprufe® minimum 50mm 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 13°C.9. Seal ‘Fish Mouth’ openings i.e. where the overlapping Preprufe® 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® in which case use a high pressure water hose and air lance.11. Repair damage to the Preprufe® 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® 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®.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®fromthebox 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®PreparationwhenBituthene® 35 isusedonWalls InspectionProcedures 36 PlacementofReinforcingSteel 36 PlacingofConcrete 37 RemovalofFormwork 37
TroubleShooting Examples 38 Details 42
InstallationChecklist 58
Co
nte
nts
3
Preprufe®waterproofmembranesarecompositesheetscomprisingarobustHDPEbacking,apressuresensitiveadhesiveandatrafficableweatherresistantcoating.Uniquely,themembranedevelopsacontinuousadhesivebondtoconcretepouredagainstit.Thispreventswatermigrationbetweenthestructureandthemembrane,substantiallyreducingtheriskofleaksandminimisingtheriskofaggressivesaltsinsolutionreachingthestructuralconcrete.
GraceConstructionProductscanprovidealistofapplicators,trainedbyGraceintheinstallationofPreprufe®.
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
uc
tio
n
IndependentAssessments•BBACertificateNo.97/3325•CECertificateNo.06/F005•MottMacDonaldSpecialServices ReportMay2001•NationalCertificationsavailable
Advantages•Canbeusedbeneathfoundationslabs andwithsingleordouble-sided formworksystems.•Sealsadhesivelytoconcretecast againstit.•Easytohandleandinstallwithout specialcornerpieces.•Alljointshavebonded‘selvedge’ orPreprufe®Tapeoverlapsforleak protection.•Unaffectedbygroundwater contaminants,pondedwaterorwet/dry cycling.•Smoothsurfacemembrane–site contaminantseasilyremoved.•Excellentchemicalresistance–protects structurefromsalts,sulphateattackand mostcontaminantslikelytobefoundin theground.•Requiresnopriming,surface conditioningorprotectionscreeds.•Simplyinstalledwithoutanymechanical liftingdeviceorspecialequipment.
4 5
Intr
od
uc
tio
n Limitations•Preprufe®shouldnotbepermanently exposedtosunlight.•Preprufe®isnotintendedforroof underlaymentsorthroughwallflashing applications.•Preprufe®shouldnotbeusedasapond ortankliner.•Preprufe®shouldnotbeusedbetween concreteinfilledhollowblockwalls.•Preprufe®isnotintendedtoprovidethe mainwaterproofingforexpansionjoints.•Preprufe®isnotintendedfornegative sidewaterproofingapplications.•Preprufe®shouldnotbeusedwherein- servicetemperatureswillexceed65°C.•Pourconcretewithin56days(42days inhotclimates)ofinstallationofthe membrane.
SystemComponents
6 7
Intr
od
uc
tio
n
6 7
Preprufe®lapshavebeentestedforhydrostaticheadresistancetoinexcessof70m(0.7MPa).
Mate
ria
lP
rop
ert
ies
Prod
uct
Reco
mm
ende
d Ap
plic
atio
nsM
ater
ial P
rope
rties
Thic
knes
sRo
ll Si
zeRo
ll Ar
eaW
eigh
t per
uni
t
Prep
rufe
®
300R
• 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
atio
ns w
here
risk
of m
embr
ane
da
mag
e fro
m re
info
rcem
ent p
lace
men
t, ba
ckfill
ing
or o
ther
site
oper
atio
ns is
con
sider
ed h
igh.
1.2
mm
1.2
m x
30
m36
m2
50 k
g
Prep
rufe
®
160R
• Ben
eath
sub
-stru
ctur
e sla
bs <
350
mm
thick
. • V
ertic
ally,
aga
inst
sub
-stru
ctur
e wa
lls w
ith s
ingl
e or
dou
ble
sid
ed fo
rmwo
rk s
yste
ms.
0.8
mm
1.2
m x
35
m42
m2
42 k
g
Prep
rufe
®
Tape
LT
• App
licat
ions
at –
5°C
to +
30°
C.• T
apin
g ro
ll end
laps
, cut
edg
e la
ps a
nd d
etai
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
Mate
ria
lP
rop
ert
ies
Prod
uct
Reco
mm
ende
d Ap
plic
atio
nsM
ater
ial P
rope
rties
Thic
knes
sRo
ll Si
zeRo
ll Ar
eaW
eigh
t per
uni
t
Bitu
then
e® L
M• L
iqui
d m
embr
ane
for d
etai
ling
term
inat
ions
, pile
cap
s an
d pi
pe
pe
netra
tions
. App
licat
ion
tem
pera
ture
5°C
and
risin
g.5.
7 kg
Bitu
then
e®
Prot
ectio
n Bo
ard
• Opt
iona
l pro
tect
ion
of P
repr
ufe® 1
60 a
pplie
d in
dou
ble
sided
form
work
, prio
r to
back
fillin
g.3
mm
1 m
x 2
m5
kg p
er b
oard
Adco
r® 5
00S
• Hyd
ro e
xpan
sive
wate
rsto
p fo
r use
in c
oncr
ete
cons
truct
ion
jo
ints
and
at p
ipe
entri
es.
5 m
rolls
6 ro
lls/c
arto
n23
kg
AT S
yste
m• H
ydro
-exp
ansiv
e PV
C co
-ext
rude
d wa
ters
top
for m
ovem
ent
and
exp
ansio
n jo
ints
.Av
aila
ble
in s
hape
s an
d co
nfigu
ratio
ns to
sui
t site
re
quire
men
ts.
Ref
er to
AT
syst
em D
ata
shee
t.
8 9
SafetydatasheetsforPREPRUFE®&PREPRUFE®TAPESarenotrequired,sincetheyarefinishedgoods.Nevertheless,customersareprovidedwiththeinformationbelowtoassistwiththesafeuseoftheproduct.SafetydatasheetsforotherGraceproductsareavailableonourwebsite:www.graceconstruction.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®/Preprufe®Tape/Adcor®500S:•Safetyhelmet•Safetyshoes•Safetyglasses•WherePreprufe®isappliedinbright sunlightconditions,itisadvisablethat tintedsafetyglassesbeusedby installers•Gloves
MinimumrecommendedPPEforapplicationofBituthene®LMinnon-confinedareas:•Longsleevedoveralls•Safetyhelmet•Safetyfootwear•Safetyglasses/spectacles•Gloves-longgauntlettype•RefertoSafetyDataSheet
FullboxesofPreprufe®160Rand300Rrequiretwomentolift.Alternativelymechanicalliftingequipmentcanbeused.
WetPreprufe®withitsplasticreleaselinerinplacecanbeslipperytowalkon.
10 11
Insta
llati
on
-G
en
era
l
12 13
Deliverytosite
NormallyPreprufe®isdeliveredtositeshrinkwrappedonpalletsandwillrequiredmechanicalequipmentforoffloadingatsite.However,smallordersmaybedeliveredasindividualrolls.
MaterialStorageStorePreprufe®rollsvertically.Sequencedeliveriestoavoiddelays,butminimiseon-sitestorage.Selectasafe,coveredsecurelocationformaterialstorageforeachday’suseinalocationthatwon’trequiremovementasecondtime.Donotstackpalletsofwaterproofingonthejobsite.Providecoverontopandallsides.
Insta
llati
on
-G
en
era
l
12 13
SubstratePreparation
Suitablesubstratesinclude:•concreteblinding•wellcompactedsandonrolledcrushed stone•rigidinsulation•clayheaveboards•permanentformwork•removableformwork•19mmplywood•Plasticflutedprotectionboard•Hydroduct®drainagesheets•Adjacentsub-structures
Itisessentialthatthesubstrateissoundandsolidtoensurenomembranemovementduringtheconcretepour.
CompactedSandBlinding
ConcreteBlinding
Insta
llati
on
-G
en
era
l
14 15
Substratesshouldbeuniformwithnogapsorvoidsgreaterthan12mm.Wheretheseexistfillwithamaterialofsufficientstrengthtosupportthemembrane.Allsubstratesmustbefreeoflooseaggregateandsharpprotrusions.
Wherepossible,avoidslopingorroundedconcreteblinding.
Incrushedstoneapplications,itisimportanttocreateasoundandsolidsubstratearound“throughslab”penetrationstoeliminatemovementduringtheconcretepour.Excessivemovementmayjeopardisethewaterproofingintegrityaroundthepenetration.Thereforegroutaroundthepenetrationpriortoinstallingthemembrane.
Thesurfacedoesnotneedtobedry,butstandingwatermustberemoved.Substratesmusthavesufficientrigiditynottomoveduringtheconcretepour.Boardedsubstratesmustbeclosebuttedtoprovidesupportandnotmorethan12mmoutofalignment.
Insta
llati
on
-G
en
era
l
14 15
1
2
RemovingPreprufe®fromtheboxThefollowingsequenceindicatestherecommendedmethodforremovingthePreprufe®fromitsbox.
Insta
llati
on
-G
en
era
l
16 17
3
Tools/MaterialsRequired•Heavydutylaproller
•Utilityknifewithretractableblade (blademustbesharp).•Tapemeasure•Cottoncleaningcloths•Plywoodorsimilarcuttingboard•Thinmetalstraightedge•Chalkline•Broom•2metrelongpipeorheavybroomhandle•Spiralpaddleformixing Bituthene®LM•Heavy-dutylowspeed
(500rpm)drill
•Roundnosetrowelorspatula•Requiredprotectionand/ordrainage boardsandotherancillaryproducts
Preprufe®membranesaresuppliedinrolls1.2mwidewithaselfadhesiveselvedgeononeedgetoenablefullybondedlapsbetweenadjacentrolls.AllotherlapsmustbetapedwithPreprufe®Tape.
Insta
llati
on
-G
en
era
l
16 17
ApplicationSequenceforSlabs-Method1-verticallyappliedPreprufe®<900mm
1.Forminternal/externalcornersections
Formingcorners-refertopage20
2.Installhorizontal/verticalinterface.
Insta
llati
on
Fo
rS
lab
s
1AInternal
2
1BExternal
2
18 19
Insta
llati
on
Fo
rS
lab
s
3.Placehorizontallengths
Refertopage24
4.Removereleasefilm
5.Inspect&repairanydamage
3
4
5
18 19
Installation-Internal&ExternalCornersInternalandexternalcornersshouldbeformedasshowninthediagramsreturningthemembraneaminimumof100mmandsealingwithPreprufe®Tape.EnsurethattheapexofthecorneriscoveredandsealedwithTapeandrollfirmly.Creaseandfoldthemembranetoensureaclosefittothesubstrateprofileandavoidhollows.
Insta
llati
on
Fo
rS
lab
s
Internal External
Preprufe®Tape
20 21
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
4
5
22 23
Insta
llati
on
Fo
rS
lab
sCornersInternalandexternalcornersshouldbeformedasshowninthediagramsreturningthemembraneaminimumof100mmonthehorizontalandsealingwithPreprufe®Tape.EnsurethattheapexofthecorneriscoveredandsealedwithTapeandrollfirmly.Creaseandfoldthemembranetoensureaclosefittothesubstrateprofileandavoidhollows.
Internal External
Preprufe®Tape
22 23
Insta
llati
on
–H
ori
zon
tal Installation–Horizontal
Placethemembranewiththeremovableplasticreleaselineruppermost.Endlapsshouldbestaggeredtoavoidabuildupoflayers.Leaveplasticreleaselinerinpositionuntiloverlapprocedureiscompleted.Accuratelypositionsubsequentsheetstooverlaptheprevioussheet75mmalongtheselvedge.Ensuretheundersideofthesucceedingsheetisclean,dryandfreefromcontaminationbeforeattemptingtooverlap.Peelbacktheplasticreleaselinerfrombetweentheoverlapsasthetwolayersarebondedtogether.Ensureacontinuousbondisachievedwithoutcreasesandrollfirmly.Oncompletionoftheinstallation,ensurecompleteremovaloftheplasticreleaselinerfromallmembraneandtape.
WheninstallingPreprufe®incoldormarginalweatherconditions(<13°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®StandardDetails.
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®membraneandTape.ReferalsototheGracemanual,DetailDrawings-WaterproofingReinforcedConcreteStructures,availableonrequest.
28 29
MembraneOutsidePourAreaLayPreprufe®justbeyondanyreinforcementstarterbarstoensureeasyaccessforfurtheroverlaps.Wherethisisnotachievablethedirectionofmembraneapplicationmaybechangedtosimplifyoverlapprocedure.
Me
mb
ran
eR
ep
airMembraneRepair
Inspectthemembranefordamagebeforeinstallationofreinforcementsteel,formworkandfinalplacementofconcrete.Cleanbyjetwashingifrequired.
Wipetheareawithadampclothtoensuretheareaiscleanandfreefromdust,andallowtodry.Forminorrepairs,applyPreprufe®Tapecentrallyoverthedamagedareaandrollfirmly.ForlargerrepairsuseapatchofPreprufe®andtapealledgeswithPreprufe®Tape.RemoveplasticreleaselinerfromTape.
Whereexposedselvedgehaslostadhesionorlapshavenotbeensealed,ensuretheareaiscleananddryandoverbandwithPreprufe®Tapeandrollfirmly.
28 29
Insta
llati
on
–V
ert
ica
l Installation–VerticalApplythemembranewiththenonadhesiveHDPEfaceagainstthesubstrate.Mechanicallyfastenthemembraneverticallyusingflushfixingsappropriatetothesubstrate.Themembranemaybeinstalledinanyconvenientlength.Securethetopofthemembraneusingabattenorfixings50mmbelowthetopedge.Usefixingsattypically600mmcentretosecurethemembraneflatagainstthesubstrate.Fixingscanbemadethroughtheselvedge,thisallowsfirmlyrolledoverlaps,whicharecoveredbythesubsequentstripsofPreprufe®.AnyexposedfixingsshouldbepatchedwithPreprufe®Tape.Ensuretheundersideofthesucceedingsheetisclean,dryandfreefromcontaminationbeforeattemptingtooverlap.Peelbacktheplasticreleaselinerfromtheoverlapsasthetwolayersarebondedtogether.Ensureacontinuousbondisachievedwithoutcreasesandrollfirmly.Oncompletionoftheinstallation,completelyremovetheplasticreleaselinerfromallmembraneandtape..
20 mm
50 mm
40 mm galvanisedclout nail withlarge head
nail bentflush tomembrane
Preprufe
30 31
Insta
llati
on
–V
ert
ica
lPlacementonVerticalPileWallsThePreprufe®isfixedthroughtheselvedgeintotheregulariseddiaphragm/secantwallanddoesnotrequireanyseparationboardunlessusedtofaceupthewallingwhereitisroughandfullofvoidsanddepressions.BoardcanbeplywoodorhighqualityfibreboardcapableoftakingtheweightofPreprufe®fixingsandtheweightofconcreteduringthepour.
Similarly,sheetpilingwillrequirethepriorinstallationofplywoodorhighqualityfibreboardorconcreteinfillbeforeinstallingPreprufe®verticallyagainstthepiling.
30 31
Insta
llati
on
–D
ou
ble
Sid
ed
Fo
rmw
ork
Insta
llati
on
–D
ou
ble
Sid
ed
Fo
rmw
ork
Inst
alla
tion
– D
oubl
e Si
ded
Form
wor
k
Installation–DoubleSidedFormworkWoodenformwork:1. Applythemembranewiththenon adhesiveHDPEfaceagainstthe formwork.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, completelyremovetheplasticrelease linerfromallmembraneandtape.10.Placeformwork,pourandvibrate concrete.11.Removeformworkwhenconcretehas aminimumstrengthof10N/mm2.
.
20 mm
50 mm
40 mm galvanisedclout nail withlarge head
nail bentflush tomembrane
Preprufe
12.Afterremovalofformwork: a.Useahammertobendall protrudingnailpointsflushto membranesurface. b.FilltiebarholeswithBETEC®350 orGraceapprovedequivalent. Allow48hourstodrythenprime withB2Primerandcoverwithcut patchesofBituthene®4000self adhesivemembrane,150mmx 150mm. c.LapPreprufe®membraneatbottom ofwalltoslabedgemembrane usingcutstripsofBituthene®4000 selfadhesivemembrane,300mm wide. d.Formagreedterminationdetailat groundlevelusingBituthene®LM.
.
20 mm
50 mm
40 mm galvanisedclout nail withlarge head
nail bentflush tomembrane
Preprufe Preprufe®-DoubleSidedFormwork(wooden)TerminationDetailBeforeFormworkRemoval
Preprufe®-DoubleSidedFormwork(wooden)TerminationDetailAfterFormworkRemoval
32 33
Insta
llati
on
–D
ou
ble
Sid
ed
Fo
rmw
ork
Insta
llati
on
–D
ou
ble
Sid
ed
Fo
rmw
ork
Inst
alla
tion
– D
oubl
e Si
ded
Form
wor
k
Installation–DoubleSidedFormworkWoodenformwork:1. Applythemembranewiththenon adhesiveHDPEfaceagainstthe formwork.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, completelyremovetheplasticrelease linerfromallmembraneandtape.10.Placeformwork,pourandvibrate concrete.11.Removeformworkwhenconcretehas aminimumstrengthof10N/mm2.
.
20 mm
50 mm
40 mm galvanisedclout nail withlarge head
nail bentflush tomembrane
Preprufe
12.Afterremovalofformwork: a.Useahammertobendall protrudingnailpointsflushto membranesurface. b.FilltiebarholeswithBETEC®350 orGraceapprovedequivalent. Allow48hourstodrythenprime withB2Primerandcoverwithcut patchesofBituthene®4000self adhesivemembrane,150mmx 150mm. c.LapPreprufe®membraneatbottom ofwalltoslabedgemembrane usingcutstripsofBituthene®4000 selfadhesivemembrane,300mm wide. d.Formagreedterminationdetailat groundlevelusingBituthene®LM.
.
20 mm
50 mm
40 mm galvanisedclout nail withlarge head
nail bentflush tomembrane
Preprufe Preprufe®-DoubleSidedFormwork(wooden)TerminationDetailBeforeFormworkRemoval
Preprufe®-DoubleSidedFormwork(wooden)TerminationDetailAfterFormworkRemoval
32 33
Insta
llati
on
-D
ou
ble
Sid
ed
Fo
rmw
ork
34 35
Installation–DoubleSidedFormworkMetalformwork:1. InstallPreprufe®asforwooden formworkexcept:2. AttopofmetalformworkfixPreprufe® membranetoflangeofformwork systemusingboltsortiewire.3. Onremovalofformworkcutthe excessunbondedmembraneatthetop ofthewallflush,usingastraightedge toavoiddamagingthebonded membrane.
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
Bituthene®8000postappliedtowallsinconjunctionwithPreprufe®belowslabs.
Bit
uth
en
eo
nW
all
s-
Pre
pru
feP
rep
ara
tio
n
34 35
Preprufe®PreparationwhenBituthene®isusedonWallsInspectthePreprufe®aroundtheperimeteredgeoftheconcreteslab.Identifyanyexposednon-selvedgeoverlapsinPreprufe®.Toensurecontinuityofthefullybondedsystem,carefullycutandremovea75mmtriangularpieceofthetopflapofPreprufe®only,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
Insp
ec
tio
nP
roc
ed
ure
s
36 37
InspectionProceduresPreprufe®application’sshouldbeinspectedoncompletionofaspecificareabeforeplacinganyreinforcingsteel.AnydamagetothemembranesystemshouldbemadegoodusingPreprufe®TapeoroversizepatchingwithPreprufe®.
Duringplacingofreinforcingsteelanydamageshouldbeidentifiedandmadegoodwhileaccesstothemembraneisrelativelyeasy.Oncompletionofreinforcingplacementanotherinspectionshouldoccurandanydamagemadegood.
ItshouldbenotedthatuseofanairlancetoblowoutdebrispriortopouringconcreteisagoodidentifierofpoorlybondedPreprufe®Tape,andoverlaps.AfurtherapplicationofPreprufe®Tapewillberequiredaftertheaffectedareashavebeencleanedanddried.
PlacingofReinforcingSteelBeforeplacingreinforcementensurethatthemembraneapplicationiscontinuous,hasbondedlaps,endlapstaped,penetrationsandpileheadssealedwithBituthene®LMandalltheplasticreleasefilmremovedfromthemembranesandtapes.
Placingofthereinforcementshouldbedonewithcaretopreventdamagetothemembraneusingspreadertypespacerblocksorsimilar,toavoidpointloadingsandpuncturing.Progressiveremovaloftemporarymembraneprotectionusedforaccessandstorageshouldoccurassteelfixingproceeds.LocaliseddisplacementofthePreprufe®adhesivemayoccuraroundspacerblocksbutisnotdetrimentaltomembraneperformance.
PlacingofConcreteEnsuretheplasticreleaselinerisremovedfromallareasofPreprufe®membraneandTape.
Itisrecommendedthatconcretebepouredwithin56daysofapplicationofthemembrane.WherePreprufe®isusedinhotclimates,themembraneexposureshouldbereducedto42days.
Concretemustbeplacedandcompactedcarefullytoavoiddamagetothemembrane.Neveruseasharpobjecttoconsolidatetheconcrete.
WheregroutsplashesoccuronthePreprufe®theseshouldbeimmediatelyremovedbeforecuringbeginsandthesurfacecleanedwithdampcloths.IfgroutsplasheshaveoccurredandbondedontothePreprufe®,aBitustik™stripshouldbeappliedtothecleanedanddriedundersideofthemembranetoenableanunderlaptobemadeensuringmembranecontinuity.
AlternativelygroutmayberemovedwithametalscrapertogetherwiththetopadhesivelayertoexposethewhiteHDPEbeforejoiningorlappingadjacentsheet.
RemovalofFormworkPreprufe®membranescanbeappliedtoremovable,slabperimeterformwork,pilecapsetc.Onceconcreteispoured,theformworkmustremaininplaceuntiltheconcretehasgainedsufficientcompressivestrengthtodevelopthesurfacebondwithPreprufe®.
Aminimumconcretecompressivestrengthof10N/mm2isrecommendedpriortostrippingformworksupportingPreprufe®membranes.Prematurestrippingmayresultinlossofadhesionbetweenthemembraneandconcrete.
Co
nc
rete
Pla
ce
me
nt
an
dF
orm
wo
rkR
em
ova
l
36 37
InspectionProceduresPreprufe®application’sshouldbeinspectedoncompletionofaspecificareabeforeplacinganyreinforcingsteel.AnydamagetothemembranesystemshouldbemadegoodusingPreprufe®TapeoroversizepatchingwithPreprufe®.
Duringplacingofreinforcingsteelanydamageshouldbeidentifiedandmadegoodwhileaccesstothemembraneisrelativelyeasy.Oncompletionofreinforcingplacementanotherinspectionshouldoccurandanydamagemadegood.
ItshouldbenotedthatuseofanairlancetoblowoutdebrispriortopouringconcreteisagoodidentifierofpoorlybondedPreprufe®Tape,andoverlaps.AfurtherapplicationofPreprufe®Tapewillberequiredaftertheaffectedareashavebeencleanedanddried.
PlacingofReinforcingSteelBeforeplacingreinforcementensurethatthemembraneapplicationiscontinuous,hasbondedlaps,endlapstaped,penetrationsandpileheadssealedwithBituthene®LMandalltheplasticreleasefilmremovedfromthemembranesandtapes.
Placingofthereinforcementshouldbedonewithcaretopreventdamagetothemembraneusingspreadertypespacerblocksorsimilar,toavoidpointloadingsandpuncturing.Progressiveremovaloftemporarymembraneprotectionusedforaccessandstorageshouldoccurassteelfixingproceeds.LocaliseddisplacementofthePreprufe®adhesivemayoccuraroundspacerblocksbutisnotdetrimentaltomembraneperformance.
PlacingofConcreteEnsuretheplasticreleaselinerisremovedfromallareasofPreprufe®membraneandTape.
Itisrecommendedthatconcretebepouredwithin56daysofapplicationofthemembrane.WherePreprufe®isusedinhotclimates,themembraneexposureshouldbereducedto42days.
Concretemustbeplacedandcompactedcarefullytoavoiddamagetothemembrane.Neveruseasharpobjecttoconsolidatetheconcrete.
WheregroutsplashesoccuronthePreprufe®theseshouldbeimmediatelyremovedbeforecuringbeginsandthesurfacecleanedwithdampcloths.IfgroutsplasheshaveoccurredandbondedontothePreprufe®,aBitustik™stripshouldbeappliedtothecleanedanddriedundersideofthemembranetoenableanunderlaptobemadeensuringmembranecontinuity.
AlternativelygroutmayberemovedwithametalscrapertogetherwiththetopadhesivelayertoexposethewhiteHDPEbeforejoiningorlappingadjacentsheet.
RemovalofFormworkPreprufe®membranescanbeappliedtoremovable,slabperimeterformwork,pilecapsetc.Onceconcreteispoured,theformworkmustremaininplaceuntiltheconcretehasgainedsufficientcompressivestrengthtodevelopthesurfacebondwithPreprufe®.
Aminimumconcretecompressivestrengthof10N/mm2isrecommendedpriortostrippingformworksupportingPreprufe®membranes.Prematurestrippingmayresultinlossofadhesionbetweenthemembraneandconcrete.
Tro
ub
leS
ho
oti
ng
150m
m o
verla
p
Ensu
re e
xpos
ed c
oncr
ete
subs
trat
e is
sm
ooth
, so
und
and
free
from
loos
e pa
rtic
les.
If n
eces
sary
repa
ir da
mag
ed c
oncr
ete
usin
g a
suita
ble
mor
tar.
See
Gra
ce D
rg.
D04
013/
Rem
1 on
op
posi
te p
age
1) E
nsur
e Pr
epru
fe® is
adh
ered
to C
oncr
ete.
2) W
ipe
clea
n Pr
epru
fe® a
t lea
st
150m
m fr
om te
rmin
atio
n
ed
ges.
3) A
pply
prim
er to
exp
osed
conc
rete
wal
l fac
e
rem
ovin
g dr
ips
from
Pr
epru
fe® a
nd a
llow
to d
ry.
4) A
pply
Bitu
then
e® 8
000
on
to p
rimed
wal
l sur
face
over
lapp
ing
onto
Pre
pruf
e®
at
leas
t 150
mm
.
1) R
emov
e lo
ose
and
crin
kled
Pre
pruf
e® to
exp
ose
conc
rete
Subs
trat
e.2)
Ens
ure
expo
sed
conc
rete
sub
stra
te is
sou
nd a
nd fr
ee fr
om
lo
ose
part
icle
s. If
nec
essa
ry re
pair
dam
aged
con
cret
e us
ing
a su
itabl
e m
orta
r.3)
Wip
e cl
ean
rem
aini
ng P
repr
ufe®
at l
east
150
mm
from
cut
edge
s.4)
App
ly p
rimer
to e
xpos
ed c
oncr
ete
face
onl
y an
d al
low
to d
ry.
5) A
pply
Bitu
then
e® 8
000
patc
h on
to p
rimed
sur
face
ove
rlapp
ing
onto
Pre
pruf
e® a
t lea
st 1
50 m
m.
O
R
App
ly B
ituth
ene®
Liq
uid
Mem
bran
e on
to e
xpos
ed c
oncr
ete
(with
out p
rimer
) ove
rlapp
ing
onto
Pre
pruf
e® a
t lea
st 1
50 m
m.
Rep
airs
toP
rep
rufe
®
-d
amag
eda
fter
con
cret
ep
lace
men
t
38 39
Tro
ub
leS
ho
oti
ng
38 39
Gra
ceD
raw
ing
Tro
ub
leS
ho
oti
ng
Ensu
re e
xpos
ed c
oncr
ete
subs
trat
e is
sm
ooth
, sou
nd a
nd fr
ee fr
om lo
ose
part
icle
s. If
nec
essa
ry re
pair
dam
aged
con
cret
e us
ing
a su
itabl
e m
orta
r.
ASe
e G
race
Drg
. D
0401
3/R
em2
B1)
Rem
ove
loos
e an
d cr
inkl
ed P
repr
ufe®
to
ex
pose
con
cret
e Su
bstr
ate.
2) E
nsur
e ex
pose
d co
ncre
te s
ubst
rate
is
so
und
and
free
from
loos
e pa
rtic
les.
If
ne
cess
ary
repa
ir da
mag
ed c
oncr
ete
usin
g a
suita
ble
mor
tar.
3) W
ipe
clea
n re
mai
ning
Pre
pruf
e® a
t lea
st
15
0 m
m fr
om c
ut e
dges
.4)
App
ly p
rimer
to e
xpos
ed c
oncr
ete
face
only
and
allo
w to
dry
.5)
App
ly B
ituth
ene®
800
0 pa
tch
onto
prim
ed
su
rfac
e ov
erla
ppin
g on
to P
repr
ufe®
at
le
ast 1
50 m
m.
O
R
App
ly B
ituth
ene®
Liq
uid
Mem
bran
e on
to
ex
pose
d co
ncre
te (w
ithou
t prim
er)
over
lapp
ing
onto
Pre
pruf
e® a
t lea
st 1
50m
m.
Rep
airs
toP
rep
rufe
®-
d
amag
eda
fter
co
ncr
ete
pla
cem
ent
40 41
Tro
ub
leS
ho
oti
ng
40 41
Gra
ceD
raw
ing
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
De
tail
s
No
n-S
elve
dge
Ove
rlap
D
etai
lRC
Wal
lPla
nS
elve
dge
Ove
rlap
Det
ail
RC
Wal
lPla
n
42 43
No
n-S
elve
dge
Ove
rlap
D
etai
lRC
Sla
bS
elve
dge
Ove
rlap
Det
ail
RC
Sla
b
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
De
tail
s
No
n-S
elve
dge
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rlap
D
etai
lRC
Wal
lPla
nS
elve
dge
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rlap
Det
ail
RC
Wal
lPla
n
42 43
No
n-S
elve
dge
Ove
rlap
D
etai
lRC
Sla
bS
elve
dge
Ove
rlap
Det
ail
RC
Sla
b
De
tail
s
RC
Sla
bC
on
stru
ctio
nJ
oin
t
44 45
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
44 45
RC
Sla
bE
xpan
sio
nJ
oin
tP
ileD
etai
l
De
tail
s
Det
ailA
tPip
e(s
mal
ldia
met
er)
Pip
eT
hro
ug
hR
CS
lab
46 47
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
46 47
RC
Sla
b-
Ro
dP
enet
ratio
nN
ewT
oE
xist
ing
Sla
bD
etai
lP
rep
rufe
®
De
tail
s
RC
Wal
lCo
nst
ruct
ion
Jo
int
48 49
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
RC
Wal
lExp
ansi
on
Jo
int
Pre
pru
fe®O
nF
aced
Sh
eetp
ilin
g
48 49
De
tail
s
Pip
eT
hro
ug
hR
CW
all
Pre
-Fix
edS
hu
tter
Tie
d
etai
l
50 51
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
n.c
om
De
tail
s
50 51
RC
Wal
lBas
eD
etai
lA
gain
stP
erm
anen
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utt
er
Alte
rnat
ive
Pre
pru
fe®
Co
nfig
ura
tion
H
ori
zon
talT
oV
ertic
alTo
be
read
inc
on
jun
ctio
n
with
ab
ove
det
ails
De
tail
s
52 53
RC
Wal
lBas
eD
etai
lWith
D
rain
Sh
eet
Alte
rnat
ive
Pre
pru
fe®
Co
nfig
ura
tion
H
ori
zon
talT
oV
ertic
alTo
be
read
inc
on
jun
ctio
n
with
ab
ove
det
ails
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
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uc
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n.c
om
De
tail
s
RC
Wal
lTo
Up
per
Lev
el
RC
Sla
bD
etai
lP
rep
rufe
®to
Pre
pru
fe®
52 53
De
tail
s
RC
Wal
lTo
Up
per
Lev
elR
CS
lab
Det
ail
Pre
pru
fe®to
Pre
pru
fe®
Sla
bE
dge
Ter
min
atio
nP
rep
rufe
®
54 55
All
th
ea
bove
de
tail
sa
rea
va
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ble
via
ww
w.g
rac
ec
on
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uc
tio
n.c
om
De
tail
s
Pile
Dir
ectT
oS
lab
Pre
pru
fe®T
erm
inat
ion
sO
nM
on
olit
hic
ally
Cas
tPile
Cap
54 55
De
tail
s
56 57
Pile
Cap
-F
ully
Tan
ked
1
Pile
Cap
-F
ully
Tan
ked
2
All
th
ea
bove
de
tail
sa
rea
va
ila
ble
via
ww
w.g
rac
ec
on
str
uc
tio
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om
De
tail
s
56 57
Mo
no
lith
icP
ileC
ap-
Dis
con
tinu
ou
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ater
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ofin
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Ap
plic
able
On
lyT
oP
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ps
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r60
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eep
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no
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icP
ileC
ap-
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con
tinu
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ater
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r60
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mD
eep
InstallationChecklistBeforePreprufe®InstallationCheck• Substrateisfirm®ular.• Gapsorvoidsgreaterthan12mmfilled.• Noprotrusionslikelytodamage membrane.• Substratesweptclean.• Nopondedwater.• Tools&equipmentinplace.• InstallersaretrainedforPreprufe installation.• Concretingtobewithin56days (42daysinhotclimates)ofPreprufe® installation.
Preprufe®Installation–referpages12to37AfterPreprufe®InstallationCheck• AreaofinstalledPreprufe®
• Preprufe®side&endlapsaresealed. ReinforcewithPreprufe®Tapeif necessary.• Internal&externalcornersaresound &properlytaped.Reinforcewith Preprufe®Tapeifnecessary.• Damagetomembraneisrepaired. Referpages29.• Penetrationsandpile(head)treatment hasbeencorrectlycarriedout.• Temporaryfixingstoformwork.• PlasticreleasefilmfromPreprufe®& Preprufe®Taperemovedandcorrectly disposedof.
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® repaired as installation of reinforcement progresses.• Again all release film removed from Preprufe® and Tape.
Immediately before ConcretingCheck• Damage to Preprufe® & Laps. Repair as necessary.• All release film removed.• External waterstop is secured and correctly positioned/sealed against Preprufe.• Preprufe 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
www.graceconstruction.com
EUROPEAN LOCATIONSUnited Kingdom GraceConstructionProductsAjaxAvenue Slough BerkshireSL14BH Tel +44(0)1753692929Fax +44(0)1753691623
France GraceProduitsdeConstructionS.A.S.1001ruedeMaisonneuveF-71580Saillenard Tel +33385764500Fax +33385741084
Germany GraceBauprodukteGmbHAlteBottroperStraße64D-45356Essen Postfach110128.D-45331Tel +49(201)86147-0Fax +49(201)619475
Italy W.R.GraceItalianaS.p.A.ViaTrento7 20017-PassiranadiRhoMilan Tel +390293537-1 Fax +390293537-516
Poland GraceSp.zo.o 00-803Warszawa Al.Jerozolimskie56C Poland Tel +48618439292Fax +48618432175
Adcor,BitutheneandPreprufeareregisteredtrademarksofWRGrace&Co.-Conn.AdvancedBondTechnologyisatrademarkofWRGrace&Co.-Conn.
Theinformationgivenisbasedondataandknowledgeconsideredtobetrueandaccurateandisofferedfortheuser’sconsideration,investigationandverification.Sincetheconditionsofusearebeyondourcontrolwedonotwarranttheresultstobeobtained.Pleasereadallstatements,recommendationsorsuggestionsinconjunctionwithourconditionsofsaleincludingthoselimitingwarrantiesandremedieswhichapplytoallgoodssuppliedbyus.Nostatement,recommendationorsuggestionisintendedforanyusewhichwouldviolateorinfringestatutoryobligationsoranyrightsbelongingtoathirdparty.Productsincludedinthispublicationmaybecoveredbypatents.Copyright2009.GraceConstructionProductsLimited.PrintedinEngland-11.09-Ref.PPAPP002
