specification… · 4 james hardie hardieflex™ sheet technical specification october 2013 new...

OCTOBER 2013 | NEW ZEALAND

TechnicalSpecification

5 FIXING HARDIEFLEX SHEET 6

5.1 General 6

5.2 FastenerDurability 6

5.3 Fastener—sizeandlayout 6

5.4 GunNailing 7

5.5 Sheetlayout 7

6 JOINTING 7

6.1 General 7

6.2 VerticalJoint 7

6.3 InternalCornerandExternalCorner 7

6.4 HorizontalJoint 7

7 FINISHING 7

7.1 Preparation 7

7.2 Sealants 7

7.3 Coating 7

8 STORAGE AND HANDLING 7

9 MAINTENANCE 8

10 PRODUCT INFORMATION 8

10.1 ManufacturingandClassification 8

10.2 Productmass 8

10.3 Sheetsizes 8

10.4 Durability 8

11 SAFE WORKING PRACTICES 9

12 ACCESSORIES 11

13 DETAILS 13

PRODUCT WARRANTY 39

1 APPLICATION AND SCOPE 3

1.1 Application 3

1.2 Scope 3

1.3 Setails 3

1.4 SpecificDesign 3

2 DESIGN 3

2.1 Compliance 3

2.2 Responsibility 3

2.3 SiteandFoundation 3

2.4 GroundClearances 3

2.5 MoistureManagement 4

2.6 Structure 4

2.7 WindLoading 4

2.8 StructuralBracing 4

2.9 FireRatedWalls 4

2.10 EnergyEfficiency 4

3 FRAMING 4

3.1 General 5

3.2 Dimensions 5

3.3 TimberGrade 5

3.4 Durability 5

3.5 FrameConstruction 5

3.6 Tolerances 5

3.7 Curvedwalls 5

4 PREPARATION 5

4.1 Buildingunderlay/HomeRAB®Preclad™lining 5

4.2 RigidAirBarrier 5

4.3 VentStrip 5

4.4 CavityBattens 5

4.5 Flashings 6

Contents

WE VALUE YOUR FEEDBACKTocontinuewiththedevelopmentofourproductsandsystems,wevalueyourinput.Pleasesendanysuggestions,includingyourname,contactdetails,andrelevantsketchesto:

Ask James Hardie™ [email protected]

James Hardie HardieFlex™ Sheet Technical Specification October 2013 New Zealand 3

1 Application and scope

1.1 APPLICATIONHardieFlex™SheetismanufacturedinNewZealandbyJamesHardiefromfibrecementwhichisacompositionofPortlandcement,groundsand,cellulosefibreandwater.HardieFlexSheetisapaneledlightweightwallcladdingsolutionforresidentialandlightcommercialbuildings.

• HardieFlexSheetisidealformanygeneralbuildingpurposessuchaswallcladding,widesoffits,porchesandgableendsetc.

• HardieFlexSheetisanaturalunsandedsheetandissuitableforapaintfinish.Avarietyofjointingmethodscanbeusedtoachievethedesiredlook.

If you are a specifierOrotherresponsiblepartyforaprojectensurethattheinformationinthisdocumentisappropriatefortheapplicationyouareplanningandthatyouundertakespecificdesignanddetailingforareaswhichfalloutsidethescopeofthesespecifications.

If you are an installer Ensurethatyoufollowthedesign,moisturemanagementandassociateddetailsandmaterialselectionprovidedbythedesigner.Allthedetailsprovidedinthisdocumentmustbereadinconjunctionwiththespecifier’sspecification.

Make sure your information is up to dateWhenspecifyingorinstallingJamesHardieproducts,ensureyouhavethecurrentmanual.Ifyou’renotsureyoudo,oryouneedmoreinformation,visitwww.jameshardie.co.nzorAskJamesHardie™on0800808868.

1.2 SCOPEThescopeofthisspecificationisfortheuseofHardieFlexSheetlimitedtobuildingswhichfallwithinthescopelimitationsofNewZealandBuildingCode(NZBC)AcceptableSolution‘E2/AS1’paragraph1.1.ThismanualcoverstheuseofHardieFlexSheetforeitherconstructionmethodsi.e.directfixedorcavity,usedinexternalwallsoftimberframedbuildings.Pleasereferto‘E2/AS1’forfurtherinformationregardingtheselectionofconstructionmethodsforcladdings.

Thisdocumentisintendedforusebyarchitects,designersandspecifierswhomaybeinvolvedwiththespecificationofHardieFlexSheet.

1.3 DETAILSVariousHardieFlexSheetdetailsareprovidedintheDetailssectionofthisdocument.ThisspecificationanddetailsinCADfilearealsoavailabletodownloadfromourwebsiteatwww.jameshardie.co.nz.

1.4 SPECIFIC DESIGNForuseofHardieFlexSheetoutsidethescopeofthisdocument,thearchitect,designerorengineermustundertakespecificdesign.Foradviceondesignsoutsidethescopeofthisspecification,AskJamesHardieon0800808868.

2 Design

2.1 COMPLIANCEHardieFlexSheetcomplieswithsection9.7.2of‘E2/AS1’.InformationcontainedinthisdocumentisalignedwiththerequirementsofNZBCAcceptableSolution‘E2/AS1’.

2.2 RESPONSIBILITYThespecifierorotherpartyresponsiblefortheprojectmustrunthroughariskmatrixanalysistodeterminewhichconstructionmethodistobeused.Thedesignermustalsoensurethatthefigurespublishedinthisspecificationareappropriatefortheintendedapplicationandthatadditionaldetailingisperformedforspecificdesignoranyareasthatfalloutsidethescopeofthisspecification.ThedesignersshouldensurethattheintentoftheirdesignmeetstherequirementsoftheNZBC.

Alldimensionsshownareinmillimetersunlessnotedotherwise.AllNewZealandStandardsreferenceinthismanualarecurrenteditionandmustbecompliedwith.

JamesHardieconductsstringentqualitycheckstoensurethatanyproductmanufacturedfallswithinourqualityspectrum.Itistheresponsibilityofthebuildertoensurethattheproductmeetsaestheticrequirementsbeforeinstallation.JamesHardiewillnotberesponsibleforrectifyingobviousaestheticsurfacevariationsfollowinginstallation.

2.3 SITE AND FOUNDATIONThesiteonwhichthebuildingissituatedmustcomplywithNZBCAcceptableSolutionE1/AS1‘SurfaceWater’.FoundationsdesignmustcomplywiththerequirementsofNZS3604‘TimberFramedBuildings’orbeasperspecificengineeringdesign.ThegradeofadjacentfinishedgroundmustslopeawayfromthebuildingtoavoidanypossibilityofwateraccumulationinaccordancewithNZBCrequirements.

2.4 GROUND CLEARANCESTheclearancebetweenthebottomedgeofcladdingandpaved/unpavedgroundmustcomplywithsection9.1.3ofE2/AS1.Thefinishedfloorlevelmustalsocomplywiththeserequirements.Theseclearancesmustbemaintainedthroughoutthelifeofthebuilding.

HardieFlexSheetsmustoverhangthebottomplateonaconcreteslabbyaminimumof50mmasrequiredbyNZS3604.

HardieFlexSheetsmusthaveaminimumclearanceof100mmfrompavedgroundand175mmfromunpavedground.

Ontheroofsanddeckstheminimumclearancemustbe50mm.

Donotinstallexternalcladdingsuchthatitmayremainincontactwithwaterorground.RefertoFigures3and22.

4 James Hardie HardieFlex™ Sheet Technical Specification October 2013 New Zealand

2.5 MOISTURE MANAGEMENTItistheresponsibilityofthespecifiertoidentifymoisturerelatedrisksassociatedwithanyparticularbuildingdesign.Wallconstructiondesignmusteffectivelymanagemoisture,consideringboththeinteriorandexteriorenvironmentsofthebuilding,particularlyinbuildingsthathaveahigherriskofwinddrivenrainpenetrationorthatareartificiallyheatedorcooled.

WallsshallincludethoseprovisionsasrequiredbytheNZBCAcceptableSolution‘E2/AS1’‘ExternalMoisture’.Inadditionallwallopenings,penetrations,junctions,connections,windowsills,headsandjambsmustincorporateappropriateflashingsforwaterproofing.Theothermaterials,componentsandinstallationmethodsusedtomanagemoistureinexternalwalls,mustcomplywiththerequirementsofrelevantstandardsandtheNZBC.ForfurtherinformationondesigningforweathertightnessrefertoBRANZLtdandtheDepartmentofBuildingandHousingupdatesonthefollowingwebsitesrespectively,www.branz.co.nzandwww.dbh.govt.nz.

2.6 STRUCTURETimber-framedbuildingsmustbedesignedinaccordancewithNZS3604(TimberFramedBuildings).Whentheframingisprovidedasperthespecificengineeringdesign,theframingstiffnessmustbeequivalenttoormorethanthestiffnessrequirementsofNZS3604.

2.7 WIND LOADINGHardieFlexSheetcladdingaresuitableforuseinallNewZealandwindzonesuptoandincludingEHasdefinedinNZS3604.Aspecificdesignisrequiredforallsituationswherethebuildingsfallinaspecificengineeringdesign(SED)windzone.

2.8 STRUCTURAL BRACINGHardieFlexSheetcanbeusedtoachievestructuralbracingrequiredfortimberframedbuildingsdesignedandconstructedinaccordancewithNZS3604.TheHardieFlexSheetmustbeinstalledasperspecificbracingsystemdetailsthatareavailableseparately.HardieFlexSheetbracingsystemshavebeenindependentlytestedandassessedbyBRANZandaresuitableforbothconstructionmethodsi.e.directfixandcavity.RefertoJamesHardieBracingDesignManualfordetails.

2.9 FIRE RATED WALLSHardieFlexSheetcladwallsusingdirectfixorcavityconstructionmethodcanachievefireratingsupto60/60/60whenthewallsareconstructedinaccordancewiththisliteratureandincludethefireratedsystemrequirementsasspecifiedinJamesHardie‘FireandAcoustic’DesignManual.Referto‘FireandAcoustic’DesignManualforfurtherinformationaboutfireratedsystems.

2.10 ENERGY EFFICIENCYExternalwallsconstructedusingHardieFlexSheet,bulkinsulation,wheretheareaofglazingis30%orlessofthetotalwallareaandconstructedasperthistechnicalspecificationcomplieswiththerequirementsforwallsinNZBCAcceptableSolutionH1/AS1(NZBCClauseH1EnergyEfficiency),ReplacementTable1.Tomeetthermalinsulationrequirementsfortheconstruction,thebulkinsulationasspecifiedinTable1mustbeused.ThisinsulationmaybesubstitutedwithinsulationshavinghigherR-values.Thethermalinsulationofawallgetsaffectedwhenthedepthofthetimberframingisincreasedordecreased.ThecalculationusedinTable1isbasedonatimberframingsize90x45mmandusinganinternalliningmaterialsuchasJamesHardieVillaboard®Liningora10mmplasterboard.

Table1Insulation capability

Climate Zone

Construction R‑Value Requirement

Minimum R‑Value of Insulation Required

1and2 1.9m2ºC/W #R2.0

3 2.0m2ºC/W #R2.2

TotalconstructionR-Valuedependsontheinsulationmaterialusedandtheframingratio.TheinsulationmaterialR-Valuesspecifiedinthistableareforstudsspacedat600mmc/candnogsspacedat800mmc/c.#ToachievehigherR-ValuesofconstructionthewallinsulationmaterialmustbereplacedwithaninsulationmaterialhavinghigherR-Valuestosuittherequirements.Forfurtherguidanceoninsulationrequirementrefertocurrenteditionof‘HouseInsulationGuide’publishedbyBRANZ.

4 James Hardie HardieFlex™ Sheet Technical Specification October 2013 New Zealand James Hardie HardieFlex™ Sheet Technical Specification October 2013 New Zealand 5

3 Framing

3.6 TOLERANCESInordertoachieveanacceptablewallfinish,itisimperativethatframingisstraightandtrue.

FramingtolerancesmustcomplywiththerequirementsofNZS3604.Allframingshallbemadeflush.

3.7 CURVED WALLSHardieFlexSheetcanbeusedinacurvedapplication.RefertoJamesHardietechnicalsupportforfurtherinformation.

4 Preparation4.1 BUILDING UNDERLAY/HOMERAB®

PRECLAD™ LININGBuildingunderlayorHomeRAB®PreClad™LiningmustbeprovidedaspertherequirementsofNZBCAcceptableSolutionE2/AS1‘ExternalMoisture’andNZS3604.ThebuildingunderlaymustcomplywithTable23ofE2/AS1andAS/NZS4200.1.ThebuildingunderlaymustbefixedinaccordancewithE2/AS1,NZS3604andAS/NZS4200.2‘PliableBuildingMembranesandUnderlay–Installation’standardandtheunderlaymanufacturer’srecommendations.

Wallswhicharenotlinedontheinsidefacee.g.garagewallsorgableendsmustincludearigidsheathingoranairbarrierbehindthecladdingwhichcomplieswiththerequirementsofNZBCAcceptableSolutionE2/AS1Table23.HomeRABPreCladLiningissuitableforuseintheseapplications.ItmustbeinstalledinaccordancewithJamesHardieRigidAirBarriersInstallationManual.

4.2 RIGID AIR BARRIERForEHwindzonesRAB®Boardmustbeusedinlieuofbuildingunderlays.RefertoJamesHardieRigidAirBarriersInstallationManualforinformationregardinginstallation.

4.3 VENT STRIPTheJamesHardieuPVCcavityventstripmustbeinstalledatthebottomofallwallsconstructedusingthedrainedandventilatedcavityconstructionmethod.Itisimportantthattheopeningsintheventstriparekeptclearandunobstructedtoallowfreedrainageandventilationofcavities.JamesHardieuPVCventstriphasanopeningareaof1000mm2/mlength.

4.4 CAVITY BATTENSBuildingswithariskscoreof7-20calculatedinaccordancewithNZBCAcceptableSolution‘E2/AS1’Table3,requireHardieFlexSheettobeinstalledonacavity.

Thecavitybattensprovideairspacebetweentheframeandthesheetandareconsidereda‘packer’onlyinthisspecification.

3.1 GENERALThisHardieFlexSheettechnicalspecificationisonlysuitablefortimber-framedbuildings.Otherframingmaterialsoutsidethescopeofthisspecification.

3.2 DIMENSIONSA45mm(nominal)minimumstudwidthisrequiredatallsheetedges.Elsewherea35mmwidestudmaybeused.

3.3 TIMBER GRADEMinimumtimbergraderequirementsareNo.1FraminggradeasperNZS3631‘NewZealandTimberGradingRules’orequivalent.

3.4 DURABILITYTheexternalframingmustbetreatedtoaminimumH1.2treatment.RefertoNZBCAcceptableSolutionB2/AS1‘Durability’forfurtherinformationaboutthedurabilityrequirements.

FortimbertreatmentandallowablemoisturecontentinformationrefertoNZS3602(TimberandWood-BasedProductsforuseinBuildings)andNZS3640(ChemicalPreservationofRoundSawnTimber)forminimumtimbertreatmentselectionandtreatmentrequirements.Alsorefertoframingmanufacturer’sliteratureforfurtherguidanceontimberselection.Framingmustbeprotectedfrommoistureatsitesinaccordancewiththerecommendationsoftheframingmanufacturer.

NOTE:

RefertoNZS3602forinformationabouttheallowablemoisturecontentintimber.

3.5 FRAME CONSTRUCTIONTheframingmustfullysupportallsheetedges.Theframingmustberigidandnotrelyonthecladdingsheetforstability.

Alltimberframingsizesandset-outmustcomplywithNZS3604andasspecifiedinthisspecification.Useoftimberframingmustbeinaccordancewithframingmanufacturer’sspecification.

ForspecificengineeringdesignfortimberframingrefertoNZS3603andAS/NZS1170.

3.5.1 Direct Fix Construction MethodFordirectfixedconstructionmethodthefollowingframingisrequired:

• Studsprovidedat600mmcentresmaximumand• Nogs/dwangsprovidedat1200mmcentresmaximum.

3.5.2 Cavity Construction MethodForcavityconstructionmethodthefollowingframingisrequired:

• Whenstudsarespacedat600mmcentresmaximumthenthenogs/dwangsmustbeprovidedat800mmcentresmaximum.

• Whenstudsarespacedat400mmcentresthenthenogs/dwangsmaybeprovidedat1200mmcentres.

• Anextrastudisrequiredininternalcorners.


ThetimberbattensmustbeminimumH3.1treatedinaccordancewithNZS3640(Chemicalpreservationofroughandsawntimber)tocomplywiththedurabilityrequirementsofB2/AS1.

Cavitybattensmustcomplywithfollowingrequirements:

• beminimum18mmthick.• beminimumaswideasthewidthofstuds.• whenstudsareat600mmcentresbattenstobeprovidedat

300mmcentres.• befixedbythecladdingfixingstothemainframingthrough

thebuildingunderlay.• untilcladdingsarefixedthebattensonlyneedtobetackedto

theframing.NOTE:

Battenfixingisrequiredtemporarilytokeepthemstraightonthewallduringconstruction.

Nointermediatebattenbetweenstudsisrequired:

• whenstudsarespacedatmaximum400mmcentresand• whenrigidsheathingsinsteadofbuildingunderlaysareused.NOTE:

100mmlongcavitypackersmustbeusedwhererequiredtosupportfixingsinthiscircumstance.

Battensmustbefixedwith40x2.8mmHardieFlexnailsat800mmcentresmaximum.

4.5 FLASHINGSAllwallopenings,penetrations,intersections,connections,windowsills,headsandjambsmustbeflashedpriortosheetinstallation.PleaserefertomoisturemanagementrequirementsinClause2.5.

Thebuildingunderlaymustbeappropriatelyincorporatedwithpenetrationandjunctionflashings.Materialsmustbelappedinsuchawaythatwatertracksdowntotheexterioronthefaceofbuildingunderlay.JamesHardiewillassumenoresponsibilityforwaterinfiltrationwithinthewallduetopoorinstallationofflashingsorbuildingunderlays.TheselectedflashingmaterialsmustcomplywiththedurabilityrequirementsoftheNZBCAcceptableSolution‘E2/AS1’.

5 Fixing HardieFlex Sheet

5.1 GENERALHardieFlexSheetsmustbekeptdryandundercoverwhilstinstorageorduringinstallation.FramingmoisturecontentsmustnotexceedthemaximumlimitspecifiedinNZS3602priortosheetinstallation.Everyendeavourmustbemadetokeepframingdryoncesheetfixingcommences.

Allsheetedgesmustbesealedpriortoinstallation.Thesheetedgesmustalsobesealedaroundwindow/dooropeningsandotherpenetrationse.g.meterboxesetc.

5.2 FASTENER DURABILITYFastenersmustmeettheminimumdurabilityrequirementsoftheNZBC.NZS3604specifiestherequirementsforfixingmaterialtobeusedinrelationtoexposureconditionsandaresummarisedinTable2.

Table2Exposure conditions and nail selection prescribed by NZS 3604

Nail Material

ZoneD* ZoneCoutsideseasprayzoneandZoneBandGeothermalhotspots

Bracing—Allzones

Grade316Stainless

Hot-dippedgalvanisedor316stainless

Grade316stainless

* (Zone C areas where local knowledge dictates that increased durability is required, appropriate selection shall be made) Microclimate conditions as detailed in NZS 3604, paragraph 4.2.4 require SED.

AlsorefertotheNZBCAcceptableSolution‘E2/AS1’Table20and21forinformationregardingtheselectionofsuitablefixingmaterialsandtheircompatibilitywithothermaterials.

5.3 FASTENER — SIZE AND LAYOUTHardieFlexSheetmustbefixedtoframingusingthefixingsasspecifiedinTable3andinaccordancewiththefollowingrequirements:

• Nailsmusthaveaminimumclearanceof12mmfromsheetedgesandaminimumof75mmverticallyand150mmhorizontallyfromsheetcorners.

• Nailsmustfinishflushwithsheetsurface.

Table3Sheet fixingDirect to stud fixing

40x2.8mmHardieFlex™nails

Fixsheetat200mmcentresatallsheetedgesaswellasallintermediateframing.

Cavity construction up to and including VH wind zones


Fix sheet at 200mm centres at all studs and at 150mm centres at top plate and bottom plate.

Cavity construction on buildings with EH wind zone or with uls design wind pressure of up to 2.5kPa


Fix sheet at 150mm centres at all sheet edges as well as all intermediate framing.

WhenusingrigidairbarrierlikeHomeRABPreCladLiningorRABBoard,thecladdingfixingnailsmustbeincreasedinlengthequaltothethicknessoftherigidairbarrier.

NOTE:

Specialfixingarrangementsarerequiredforbracingandfire-resistanceratedwallsystems.FormoreinformationAskJamesHardieon0800808868.


5.4 GUN NAILINGHardieFlexSheetscanbefixedusingnailguns.Thegunnailsusedmusthaveafullroundheadtoprovidetherequiredholdingpower.Thelengthandgaugeofnailsmustataminimumbeasspecifiedinthisdocument.Checkwithnailgunmanufacturerformoreinformation.

NOTE:

DonotuseDHeadnails.Donotusegunnailingforbracingapplications.

5.5 SHEET LAYOUT• Allsheetedgesmustbesupportedbytheframing.• HardieFlexSheetmustbefixedvertically.

6 Jointing6.1 GENERALHardieFlexSheetscanbejointedinanumberofwaystoachievedifferentpanelisedlookofthewalls.

6.2 VERTICAL JOINTHardieFlexSheetscouldhavethefollowingtypesofverticaljoints.

• uPVCHardiejointerJoint,refertoFigure4and23• TimberBattenJoint,refertoFigure5and24• FlexibleSealantJoint,refertoFigure6and25

6.3 INTERNAL CORNER AND EXTERNAL CORNER

HardieFlexSheetcouldhavethefollowingtypesofinternalandexternalcorners.

• uPVCJointer,refertoFigure7,8,26,27and34• TimberBattenJoint,refertoFigure9,10,28and29• FlexibleSealantJoint,refertoFigure11,12,30and31

6.4 HORIZONTAL JOINTAtfloorjoistlevelsahorizontaljointmustbeprovidedtoaccommodatethemovementresultingfromtimberjoistshrinkageandsettlement.

• ForHardieFlexSheetsuseaJamesHardieuPVC‘h’mouldtoformahorizontaljointorapurposemademetal‘Z’flashingcouldalsobeusedtoformahorizontaljoint.

7 Finishing

7.1 PREPARATIONPaintingofHardieFlexSheetsisrequiredinordertomeetthedurabilityrequirementsoftheNZBCandproductwarranties.HardieFlexSheetsmustbedryandfreefromdirtbeforepainting.Coatingmustbecompletedwithin3monthsofsheetinstallation.

WhenusinguPVCflashings,thelightreflectivevalueofthecolourusedmustbemorethan40%asrequiredunder‘E2/AS1’.Darkcolourscauseexcessivemovementanddeterioratethecladdingperformance.

7.2 SEALANTS AllsealantsmustmeettherelevantrequirementsoftheNZBC.Applicationanduseofsealantsmustcomplywithmanufacturer’sinstructions.Checkwithsealantmanufacturerpriortocoatingoversealants.Somesealantmanufacturersdonotrecommendcoatingovertheirproduct.

7.3 COATING UseonlyqualityexteriorpaintscomplyingwithAS3730.Manufacturer’sspecificationfortheselectedpaintmustbefollowed.Notethatsomepaintsrequireundercoatbeforeapplyingthefinishcoat.Priortocoating,thesurfaceshouldbeexaminedtoensureitisclean,dryandfreeofanydustorcontaminants.WhenusinguPVCflashings,thelightreflectivevalue(LRV)forthecolourmustnotbelessthan40%.

PaintswithalowLRVwillabsorbmoresolarheatandcouldcausethecomponentsusedinthewalltoexpandorcontract.Thiscombinedwithglossypaintsandwettimberusedatconstructionstage,couldleadtoincreasedchancesoffastenerreadthroughasiscommonwithanyotherbuildingmaterial.

Enamel—basedpaintscanbeused,utilisingathree-coatsystem.Refertothepaintmanufacturerfordetailsbeforecommencingthecoatingwork.

Paintmustnotbeappliedwhenthetemperatureisbelow10ºC.

8 Storage and handling

HardieFlexSheetsmustbelaidflatonasmoothlevelsurface.Edgesandcornersmustbeprotectedfromchipping.Toensureoptimumperformance,storepanelsundercoverandkeepdrypriortofixing.Ifthesheetsbecomewet,allowthemtodrythoroughlybeforefixing.Donotcarrysheetsontheflat,carryintheverticalpositiontoavoidexcessivebending.


10.3 SHEET SIZES AvailablesizesofHardieFlexSheetsarespecifiedinTable4.

Table4Sheet sizes HardieFlex Sheets — 6mm and 7.5mmThickness (mm)

Width (mm)

Length (mm)

1800 2400 2700 3000

6 900 3

6 1200 3 3 3 3

7.5 1200 3 3 3

10.4 DURABILITYHardieFlexSheets,wheninstalledandmaintainedasperthetechnicalspecification,willmeetthedurabilityrequirementsforcladdingsasrequiredintheNZBCApprovedDocumentB2‘Durability’.

10.4.1 Resistance to moisture/rottingHardieFlexSheetsdemonstrateresistancetopermanentmoistureinduceddeterioration(rotting)andhaspassedthefollowingtestsinaccordancewithAS/NZS2908.2:

• WaterPermeability(Clause8.2.2)• WarmWater(Clause8.2.4)• HeatRain(Clause6.5)• SoakDry(Clause8.2.5)

10.4.2 Resistance to fireHardieFlexSheetisclassifiedas‘Non-CombustibleMaterial’whichissuitableforuseasexternalcladdingandcomplieswiththeprovisionsofClauseC‘ProtectionFromFire’compliancedocumentofNZBC.

10.4.3 Alpine regionsInregionssubjecttofreeze/thawconditions,HardieFlexSheetmustnotbeindirectcontactwithsnoworicebuildupforextendedperiods,e.g.externalwallsinalpineregionsmustbeprotectedwheresnowdriftsoverwinterisexpected.

TheHardieFlexSheethasbeentestedinaccordancewithAS/NZS2908.2Clause8.2.3.

9 Maintenance

ItistheresponsibilityofthespecifiertodeterminenormalmaintenancerequiredtocomplywiththeNZBCAcceptableSolutionB2/AS1.Theextentandnatureofmaintenancewilldependonthegeographicallocationandexposureofthebuilding.Asaguide,itisrecommendedthatbasicnormalmaintenancetasksshallincludebutnotbelimitedto:

• Washingdownexteriorsurfacesevery6-12months*• Re-applyingofexteriorprotectivefinishesifnecessary**• Maintainingtheexteriorenvelopeandconnectionsincluding

joints,penetrations,flashingsandsealantsthatmayprovideameansofmoistureentrybeyondtheexteriorcladding

• Cleaningoutgutters,blockedpipesandoverflowsasrequired• Pruningbackvegetationthatisclosetoortouchingthe

building.* Do not use a water blaster to wash down the cladding.** Refer to paint manufacturer for washing down and recoating requirements related to paint performance.

10 Product information

10.1 MANUFACTURING AND CLASSIFICATION

HardieFlexSheetsareacellulosefibrereinforcedcementbuildingproduct.ThebasiccompositionisPortlandcement,groundsand,cellulosefibreandwater.Thesheetsareeasilyidentifiedbythename‘HardieFlex’printedatregularintervalsonthebackfaceofsheet.

HardieFlexSheetsaremanufacturedtoAS/NZS2908.2‘Cellulose-CementProductsPart2:FlatSheets’(ISO8336’FibreCementFlatSheets’)standardsinNewZealand.JamesHardieNewZealandisanISO9001‘Telarc’certifiedmanufacturer.HardieFlexSheetsareclassifiedTypeA,Category3inaccordancewithAS/NZS2908.2‘Cellulose-CementProducts’.

ForSafetyDataSheets(SDS)visitwww.jameshardie.co.nzorAskJamesHardieon0800808868.

10.2 PRODUCT MASS HardieFlexSheetsaremanufacturedintwothickness.The6.0mmthicksheethasaMassof8.6kg/m2atEMCandthe7.5mmthicksheethasaMassof10.8kg/m2atEMC.

HardieFlexSheetsaredefinedasaLightWeightWallCladding(notexceeding30kg/m2)asperNZS3604.


11 Safe working practices

WARNING — DO NOT BREATHE DUST AND CUT ONLY IN WELL VENTILATED AREAJamesHardieproductscontainsand,asourceofrespirablecrystallinesilicawhichisconsideredbysomeinternationalauthoritiestobeacauseofcancerfromsomeoccupationalsources.Breathingexcessiveamountsofrespirablesilicadustcanalsocauseadisablingandpotentiallyfatallungdiseasecalledsilicosis,andhasbeenlinkedwithotherdiseases.Somestudiessuggestsmokingmayincreasetheserisks.Duringinstallationorhandling:(1)workinoutdoorareaswithampleventilation;(2)minimisedustwhencuttingbyusingeither‘ScoreandSnap’knife,fibrecementshearsor,wherenotfeasible,useaHardieBlade™SawBladeanddust-reducingcircularsawattachedtoaHEPAvacuum;(3)warnothersintheimmediateareatoavoidbreathingdust;(4)wearaproperly-fitted,approveddustmaskorrespirator(e.g.P1orP2)inaccordancewithapplicablegovernmentregulationsandmanufacturerinstructionstofurtherlimitrespirablesilicaexposures.Duringclean-up,useHEPAvacuumsorwetcleanupmethods-neverdrysweep.Forfurtherinformation,refertoourinstallationinstructionsandSafetyDataSheetsavailableatwww.jameshardie.co.nz.

FAILURE TO ADHERE TO OUR WARNINGS, SAFETY DATA SHEETS, AND INSTALLATION INSTRUCTIONS MAY LEAD TO SERIOUS PERSONAL INJURY OR DEATH.

James Hardie recommended safe working practices

CUTTING OUTDOORS

1.Positioncuttingstationsothatwindwillblowdustawayfromuserorothersinworkingarea.

2.Useoneofthefollowingmethodsbasedontherequiredcuttingrate:

BEST

•Scoreandsnap •Handguillotine •Fibreshear

BETTER

•DustreducingcircularsawequippedwithHardieBlade™SawBladeandHEPAvacuumextraction.

GOOD

•DustreducingcircularsawequippedwithHardieBlade™SawBlade

CUTTINGINDOORS

•Cutonlyusingscoreandsnap,handguillotineorfibreshears(manual,electricorpneumatic).

•Positioncuttingstationinwell-ventilatedarea

Drilling/othermachining

WhendrillingormachiningyoushouldalwayswearaP1orP2dustmaskandwarnothersintheimmediatearea.

IMPORTANTNOTES

1.Formaximumprotection(lowestrespirabledustproduction),JamesHardierecommendsalwaysusing“Best”-levelcuttingmethodswherefeasible

2.NEVERuseapowersawindoors3.NEVERuseacircularsawbladethatdoesnotcarrythe

HardieBlade™logo4.NEVERdrysweep—UsewetsuppressionorHEPA

Vacuum5.NEVERusegrinders6.ALWAYSfollowtoolmanufacturer’ssafetyrecommendations

P1orP2respiratorscanbeusedinconjunctionwithabovecuttingpracticestofurtherreducedustexposures.Additionalexposureinformationisavailableatwww.jameshardie.co.nztohelpyoudeterminethemostappropriatecuttingmethodforyourjobrequirements.Ifconcernstillexistsaboutexposurelevelsoryoudonotcomplywiththeabovepractices,youshouldalwaysconsultaqualifiedindustrialhygienistorcontactJamesHardieforfurtherinformation.


Working instructionsRefertorecommendedSafeWorkingPracticesbeforestartinganycuttingormachiningofproduct.

Score and SnapScoreandSnapisafastandefficientmethodofcuttingtheproductusingspecialtungstentippedScoreandSnapknife.

Preferablyscoreonthefacesideoftheproduct.Scoreagainstastraightedgeandrepeattheactiontoobtainadequatedepthforcleanbreak—normally1/3ofsheetthickness.Snapupwardstoachievebreak.Smoothanyroughedgeswitharasp.

Hand GuillotineMakeguillotinecutontheoff-cutsideoflinetoallowforthethicknessoftheblade.

Fibreshear Heavy Duty Anelectricallypowered,fast,cleanandeffortlesswayofcuttingJamesHardiebuildingproducts,especiallyaroundcurvessuchasarchways.MakeFibreshearcutonthe“off-cut”sideofthelinetoallowforthethicknessoftheshear.

HardieBlade™ Saw BladeTheHardieBlade™SawBladeusedwithadust-reducingsawandHEPAvacuumextractionallowsforfast,cleancuttingofJamesHardiefibrecementproducts.Adust-reducingsawusesadustdeflectororadustcollectorconnectedtoavacuumsystem.Whensawing,clampastraight-edgetothesheetasaguideandrunthesawbaseplatealongthestraightedgewhenmakingthecut.

Hole FormingFor smooth clean cut circular holes:• Markthecentreoftheholeonthesheet.• Pre-drillapilothole.• Usingthepilotholeasaguide,cuttheholetotheappropriate

diameterwithaholesawfittedtoaheavydutyelectricdrill.

For irregular holes:• Smallrectangularorcircularholescanbecut

bydrillingaseriesofsmallholesaroundtheperimeteroftheholethentappingoutthewastepiecefromthesheetface.

• Tapcarefullytoavoiddamagetosheets,ensuringthatthesheetedgesareproperlysupported.

Storage and handlingAllJamesHardiebuildingproductsshouldbestoredtoavoiddamage,withedgesandcornersofthesheetsprotectedfromchipping.JamesHardiebuildingproductsmustbeinstalledinadrystateandbeprotectedfromrainduringtransportandstorage.Theproductmustbelaidflatundercoveronasmoothlevelsurfaceclearofthegroundtoavoidexposuretowaterormoisture,etc.

QualityJamesHardieconductsstringentqualitycheckstoensurethatanyproductmanufacturedfallswithinourqualityspectrum.Itistheresponsibilityofthebuildertoensurethattheproductmeetsaestheticrequirementsbeforeinstallation.JamesHardiewillnotberesponsibleforrectifyingobviousaestheticsurfacevariationsfollowinginstallation.


Accessories/tools supplied by James Hardie

6mm HardieFlex Sheet

Accessory Code Size (mm) Material/appearance

6mmCappingMould 2400 3000

300539300540

2400long3000long

uPVC/Bonecolour

6mmHorizontalFlashing 302254 3000long uPVC/Bonecolour

6mmHardiejointer 2400 3000

300730300734

2400long3000long uPVC/Bonecolour

6mm and 7.5mm HardieFlex Sheets


VentStrip 302490 3000long uPVC

HorizontalFlashingJointer 301921 100long uPVC/Bonecolour

6mmHorizontalFlashing 302254 3000long uPVC/Bonecolour

6mmHardiejointer 2400 3000

300730300734

2400long3000long

uPVC/Bonecolour

CornerFlashingJointer301920 50x50 uPVC/Bonecolour

Inseal32591.5mmthick 50mm 80mm

300767300769

50mroll50mroll

BlackCompressibleFoam

HardieFlexNail-5kg

30278260x3.15mmx6.8mmøheadsize 316StainlessSteel

HardieFlexNail-5kg 302784

60x3.15mmx6.8mmøheadsize HotDipGalvanised

HardieBlade™SawBlade 300660 4tooth—184mm DiamondTipped

CornerUnderflashing50mmx50mm

303745 3000long uPVC/Bonecolour

2pieceInternalCorner 305756 3000long uPVC/Bonecolour

2pieceExternalCorner 305755 3000long uPVC/Bonecolour

12 Accessories


Accessories not supplied by James Hardie

JamesHardierecommendsthefollowingproductsforuseinconjunctionwithitsHardieFlexSheets.JamesHardiedoesnotsupplytheseproducts.Pleasecontactcomponentmanufacturerforinformationontheirwarrantiesandfurtherinformationontheirproducts.

Accessory Size (mm) Material/appearance

HardieFlex™nail/FibreCementnail 40x2.8mm 316StainlessSteel

HardieFlex™nail/FibreCementnail 40x2.8mm HotDipGalvanised

HardieFlex™nail/FibreCementnail 60x3.15mm 316StainlessSteel

HardieFlex™nail/FibreCementnail 60x3.15mm HotDipGalvanised

SikaflexAT-Facadeorsimilar Tube

PEFrodSikaBoomorsimilar

Polyethylenefoam

FlashingtapeTyvek,Protectowraporsimilar

Proprietarytapetoadheretobuildingunderlay

Inseal3109SealingStrip 19mm x 10mm x 12m Black Compressible Foam

FlashingtoTable20‘E2/AS1’ ReferFigure13 Flashingfabricator

ScoringKnife TungstenCarbide

Accessories/Tools supplied by James Hardie

7.5mm HardieFlex Sheet


7.5mmHardiejointer 2400 3000

300731 300735

2400long3000long

uPVC/Bonecolour

7.5mmCappingMould 300541 3000long uPVC/Bonecolour

7.5mmHorizontalFlashing 302256 3000long uPVC/Bonecolour


13 Details

VariousdetailsoutlinedinthefollowingtableareavailableonPages13to38.

Table7Details

Description Direct fixed Cavity construction

Figure Page Figure Page

Framing Figure1 14 Figure19 25

SheetFixing Figure2 15 Figure21 27

ConcreteFoundationDetail Figure3 16 Figure22 28

VerticaluPVCJoint Figure4 16 Figure23 29

TimberBattenJoint Figure5 17 Figure24 29

VerticalSealantJoint Figure6 17 Figure25 29

InternaluPVCCornerJoint Figure7 18 Figure26 30

ExternaluPVCCornerJoint Figure8 18 Figure27 30

InternalTimberBattenCorner Figure9 19 Figure28 31

ExternalTimberBattenCorner Figure10 19 Figure29 31

InternalSealantJointCorner Figure11 20 Figure30 32

ExternalSealantJointCorner Figure12 20 Figure31 32

HorizontalControlJoint Figure13 21 Figure33 34

SoffitDetail Figure14 22 Figure32 33

‘h’MouldJointer Figure15 22

WindowSill Figure16 23 Figure35 35

WindowHead Figure17 24 Figure36 36

WindowJamb Figure18 24 Figure37 36

CavityBattenFixing Figure20 26

Cornerto‘h’MouldJoint Figure34 35

OnePieceApronFlashingJoint Figure38 37

ParapetFlashing Figure39 37

PipePenetration Figure40 38


Figure1:Directfixframing


Figure2:Directfixsheetfixing


Figure3:Directfixconcretefoundationdetail

Figure4:DirectfixverticaluPVCjoint


Figure5:Directfixverticaltimberbattenjoint

Figure6:Directfixverticalsealantjoint


Figure7:DirectfixinternaluPVCcornerjoint

Figure8:DirectfixexternaluPVCcornerjoint


Figure9:Directfixinternaltimberbattencorner

Figure10:Directfixexternaltimberbattencorner


Figure11:Directfixinternalsealantjointcorner

Figure12:Directfixexternalsealantjointcorner


Figure13:Directfixhorizontalcontroljoint


Figure14:Directfixsoffitdetail

Figure15:‘h’mouldjointer


Figure16:Directfixwindowsill


Figure18:Directfixwindowjamb

Figure17:Directfixwindowhead


Figure19:Cavityfixframing


Figure20:Cavitybattenfixing


Figure21:Cavitysheetfixing


Figure22:Cavityconcretefoundationdetail


Figure25:Cavityverticalsealantjoint

Figure23:CavityverticaluPVCjoint

Figure24:Cavityverticaltimberbattenjoint


Figure26:CavityinternaluPVCcornerjoint

Figure27:CavityexternaluPVCcornerjoint


Figure28:Cavityinternaltimberbattencorner

Figure29:Cavityexternaltimberbattencorner


Figure30:Cavityinternalsealantjointcorner

Figure31:Cavityexternalsealantjointcorner


Figure32:Cavitysoffitdetail


Figure33:Cavityhorizontalcontroljoint


Figure35:Cavitywindowsill

Figure34:Cavitycornerto‘h’mouldjoint


Figure37:Cavitywindowjamb

Figure36:Cavitywindowhead


Figure38:Cavityonepieceapronflashingjoint

Figure39:Cavityparapetflashing


Figure40:Cavitypipepenetration


Product WarrantyOctober 2013JamesHardieNewZealand(“JamesHardie”)warrantsforaperiodof15yearsfromthedateofpurchasethattheHardieFlex™Sheet(the“Product”),willbefreefromdefectsduetodefectivefactoryworkmanshipormaterialsand,subjecttocompliancewiththeconditionsbelow,willberesistanttocracking,rotting,fireanddamagefromtermiteattackstotheextentsetoutinJamesHardie’srelevantpublishedliteraturecurrentatthetimeofinstallation.JamesHardiewarrantsforaperiodof15yearsfromthedateofpurchasethattheaccessoriessuppliedbyJamesHardiewillbefreefromdefectsduetodefectivefactoryworkmanshipormaterials.

NothinginthisdocumentshallexcludeormodifyanylegalrightsacustomermayhaveundertheConsumerGuaranteesActorotherwisewhichcannotbeexcludedormodifiedatlaw.

CONDITIONS OF WARRANTY: Thewarrantyisstrictlysubjecttothefollowingconditions:

a) JamesHardiewillnotbeliableforbreachofwarrantyunlesstheclaimantprovidesproofofpurchaseandmakesawrittenclaimeitherwithin30daysafterthedefectwouldhavebecomereasonablyapparentor,ifthedefectwasreasonablyapparentpriortoinstallation,thentheclaimmustbemadepriortoinstallation.

b) Thiswarrantyisnottransferable.

c) TheProductmustbeinstalledandmaintainedstrictlyinaccordancewiththerelevantJamesHardieliteraturecurrentatthetimeofinstallationandmustbeinstalledinconjunctionwiththecomponentsorproductsspecifiedintheliterature.Further,allotherproducts,includingcoatingandjointingsystems,appliedtoorusedinconjunctionwiththeProductmustbeappliedorinstalledandmaintainedstrictlyinaccordancewiththerelevantmanufacturer’sinstructionsandgoodtradepractice.

d) TheprojectmustbedesignedandconstructedinstrictcompliancewithallrelevantprovisionsofthecurrentNewZealandBuildingCode(“NZBC”),regulationsandstandards.

e) Theclaimant’ssoleremedyforbreachofwarrantyis(atJamesHardie’soption)thatJamesHardiewilleithersupplyreplacementproduct,rectifytheaffectedproductorpayforthecostofthereplacementorrectificationoftheaffectedproduct.

f) JamesHardiewillnotbeliableforanylossesordamages(whetherdirectorindirect)includingpropertydamageorpersonalinjury,consequentialloss,economiclossorlossofprofits,arisingincontractornegligenceorhowsoeverarising.WithoutlimitingtheforegoingJamesHardiewillnotbeliableforanyclaims,damagesordefectsarisingfromorinanywayattributabletopoorworkmanship,poordesignordetailing,settlementorstructuralmovementand/ormovementofmaterialstowhichtheProductisattached,incorrectdesignofthestructure,actsofGodincludingbutnotlimitedtoearthquakes,cyclones,floodsorothersevereweatherconditionsorunusualclimaticconditions,efflorescenceorperformanceofpaint/coatingsappliedtotheProduct,normalwearandtear,growthofmould,mildew,fungi,bacteria,oranyorganismonanyProductsurfaceorProduct(whetherontheexposedorunexposedsurfaces).

g) Allwarranties,conditions,liabilitiesandobligationsotherthanthosespecifiedinthiswarrantyareexcludedtothefullestextentallowedbylaw.

h) Ifmeetingaclaimunderthiswarrantyinvolvesre-coatingofProducts,theremaybeslightcolourdifferencesbetweentheoriginalandreplacementProductsduetotheeffectsofweatheringandvariationsinmaterialsovertime.

DISCLAIMER: TherecommendationsinJamesHardie’sliteraturearebasedongoodbuildingpractice,butarenotanexhaustivestatementofallrelevantinformationandaresubjecttoconditions(c),(d),(f)and(g)above.JamesHardiehastestedtheperformanceoftheHardieFlex™SheetwheninstalledinaccordancewiththeHardieFlex™Sheettechnicalspecification,inaccordancewiththestandardsandverificationmethodsrequiredbytheNZBCandthosetestresultsdemonstratetheproductcomplieswiththeperformancecriteriaestablishedbytheNZBC.However,asthesuccessfulperformanceoftherelevantsystemdependsonnumerousfactorsoutsidethecontrolofJamesHardie(e.g.qualityofworkmanshipanddesign)JamesHardieshallnotbeliablefortherecommendationsmadeinitsliteratureandtheperformanceoftherelevantsystem,includingitssuitabilityforanypurposeorabilitytosatisfytherelevantprovisionsoftheNZBC,regulationsandstandards,asitistheresponsibilityofthebuildingdesignertoensurethatthedetailsandrecommendationsprovidedintherelevantJamesHardieinstallationmanualaresuitablefortheintendedprojectandthatspecificdesignisconductedwhereappropriate.

CopyrightOctober2013.©JamesHardieNewZealand.TMand®denotesaTrademarkorRegisteredMarkownedbyJamesHardieTechnologyLimited.

specification… · 4 james hardie hardieflex™ sheet technical specification october 2013 new...

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