�
Clelands Timber Products Limited, 61 Katere Road, PO Box 3240, New Plymouth 4341phone. 0800 100 095 fax. 0800 114 488 email. [email protected] www.clelands.co.nz
Clelands Timber CodeMark™ Weatherboard Cladding
Table of Contents
Page1. Scope 3
2. CriticalSystemComponents 4
3. ProprietarySystemComponents 6
4. InstallationPreparation 6
5. InstallationFixingDetails 9
5.1 BevelBack 9
5.2 Rusticated 23
5.3 VerticalShiplap -CavityBattenFixing 39 -DirectFix 55
6. PaintFinishWeatherboards 68
7. ContactDetails 68
8. Disclaimer 68
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�. Scope�.� Intended UseClelandsCodeMark™weatherboardsystemisdesignedforuseascladdingforresidentialandsmallcommercialbuildingsthatfallwithinthescopeofNZ3604.Itisonlysuitableforbuildingswitha‘RiskScore’of20orbelowasperthe‘WeatherTightnessMatrix’outlinedinE2/AS1.RefertotheDepartmentofBuildingandHousing’sbooklettitled‘Externalmoisture-aguidetousingtheriskmatrix’formoreinformation.
�.2 Product InformationClelandsfingerjointedweatherboardsareproducedfromplantationgrownRadiataPine.Whenfingerjointed,thisproductexceedsitsoriginalphysicalandstructuralproperties.Thetimberiskilndriedtobetween8-14%moisturecontentforstabilitythenmachinedtoitsfinishedformandtreatedusingalightorganicsolventpreservativeH3.1designedspecificallyforexteriorapplications.Oncetreatedthetimberisfactorycoatedwithanarchitecturalprimer.
Inlowrisksituations,Clelandsweatherboardscanbefixeddirectlytothestuds.
a) ForBevelBackweatherboardswhentherisk scoreis12orbelow.
b)ForRusticatedweatherboardswhentherisk scoreis6orbelow.
c) ForVerticalShiplapweatherboardswhentherisk scoreis6orbelow.
Forallsituationswhentheriskscoreexceedstheabove,cavitybattensarerequired,orCavibatextrudedplasticbattensare.
WhenusingcomponentsnotproducedbyClelandssuchasflashings,sealants,paintetc.pleaseatalltimesfollowthemanufacturer’srecommendedinstructions.AstheinstallationoftheproductsrelyonfactorsbeyondClelandscontrol,ClelandsassumesnoresponsibilityforanyworkorsystemsusedinconjunctionwiththeinstallationofourproductsandtheirsuitabilitytosatisfyBuildingCodesorCouncilrequirements.
�.� PerformanceWheninstalledandmaintainedasspecifiedbyaqualifiedtradesmanusingacceptedtradepracticesitwillmeetthefollowingrequirementsoftheNZBC(NewZealandBuildingCodeascontainedintheBuildingRegulationsAct1992):
• B1 Structure
• B2 Durability
• E2 ExternalMoisture
• F2 HazardousBuildingMaterial
�.4 Wind ZonesThissolutionisonlyacceptableforwindzonesuptoandincluding‘VeryHigh’asdefinedinNZS3604.ExtraHighwindzoneswillrequirearigidunderlayandlargerflashings.
�.5 Minimum LifeAllweatherboardshaveminimum15-yeardurabilityasrequiredbyNZS3602,givennormalmaintenance.
�.6 Serviceable LifeInadditiontotheaboveminimumlife,thisH3.1fingerjointedpreprimedcladdingsystemisexpectedtohaveaserviceablelifeofatleast30-yearssubjecttoinstallation,painting,coatingandmaintenancerequirementsasspecifiedinthismanual.
�.6.�. Coating and PrimingAlthoughthesearefactory-coatedproducts,on-sitefinishcoatingwillberequiredtoachieveserviceablelifespan.
TheuseofsealantsbetweentheWeatherboardlapswillvoidanywarrantyofClelandsTimberProductsLimitedbecausethisreducesventilation,trapsinanymoistureandinhibitsnaturalmovement.
Allcoatingistobedoneaccordingtocoatingmanufacturer’sinstructionsinawell-ventilatedarea.Refertothecoating/primersupplierforallmattersrelatingtohealthandsafety.AllrelevantsectionsofstandardAS/NZS2311:2009(Guidetothepaintingofbuildings)shallbeadheredto.
Amendment to 1.6.1 approved 8th May 2015.
�.6.2. MaintenanceThelifespansspecifiedaboveapplytostructuralperformanceandweathertightnessonly.Appearancewilldegradeovertimeifmaintenancerequirementsarenotadheredtoinaccordancewiththemaintenancesectionofthismanual.
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�.7 Handling• Weatherboardsandaccessoriesmustbekept
clean,dry,undercoverandoutoftheweather priortoinstallation.
• Timbermustbestoredhorizontallyonbearersat1200mmspacingatleast100mmofftheground.
• Weardustmask,gloves,earandeyeprotectionwhenworkingwithtimber.
�.8 Resource and forestry certificationAlltimberforClelandsCodeMark™weatherboardsissourcedfromplantationforestsinNewZealand.GenerallytheproductsaresuppliedasFSC(ForestStewardshipCouncil)MixedCreditCoCcertified.FSCPurecertificationisavailableonrequestFSCNo.COC-006055.
�.9 Limitations• ClelandsCodeMark™weatherboardsmustbe
installedbyaLicensedBuildingPractitioner.
• Thisdocumentisnotexhaustiveinitsscope.ResponsibilityfordesignlieswiththespecifierorresponsiblepartyfortheprojecttoensurethefinaldesignmeetstherequirementsoftheintendedapplicationandtheNZBC.
• Fordesignsoutsidethescopeofthistechnicalspecification,specificdesignmustbeundertakenbythearchitectordesigner.
2. Critical System Components2.� Paint Finish Weatherboards2.�.� Horizontal Bevel BackAllprofilesmusthaveaminimum32mmoverlap,withmatchingopposed8x6mmweathergrooves10mmfromtheedgeofeachedge.Theexposedleadingedgemayoptionallyhavea3mmpencilroundfinishforbetterpaintadhesion.
Profiles:�50 x 25WB, 200 x 25WBRefertoClelandsTimberProductsLtdprofilechart.
2.�.2 Horizontal Rusticated150x25and200x25profilesmusthaveaminimum25mmoverlap,withmatchingopposed6x3mmweathergrooves10mmfromtheedgeofeachedge,andallowingforaminimum2mmexpansiongapbetweenboards.Theexposedleadingedgemayoptionallyhavea3mmpencilroundfinishforbetterpaintadhesion.
225x25and250x25profilesmusthaveaminimum35mmoverlap,withmatchingopposed6x3mmweathergrooves10mmfromtheedgeofeachedge,andallowingforaminimum4mmexpansiongapbetweenboards.Theexposedleadingedgemayoptionallyhavea3mmpencilroundfinishforbetterpaintadhesion.
Profiles:�50 x 25WR, 200 x 25WR, 225 x 25WR, 250 x 25WRRefertoClelandsTimberProductsLtdprofilechart.
2.�.� Vertical ShiplapAllprofilesmusthaveaminimum25mmoverlap,withmatchingopposed6x3mmweathergrooves10mmfromtheedgeofeachedge,andallowingforaminimum2mmexpansiongapbetweenboards.Theexposedleadingedgemayoptionallyhavea3mmpencilroundfinishforbetterpaintadhesion.
Profiles:�50 x 25WS, 200 x 25WS
RefertoClelandsTimberProductsLtdprofilechart
2.2 Cavity Battens• CavitiesmustcomplywithE2/AS1oftheNZBC
paragraphs9.1.8to9.1.9.4.
• Timbercavitybattensshallbeaminimum 45mmx20mmtomatchtheheightofframing
andbeminimumH3.1treatedaccordingto NZS3640.
2.2.� Horizontal weatherboard systemsUsesolidverticalcavitybattensasfollows:20 x 45or20 x 65
2.2.2 Vertical weatherboard systemsCavibatCavibat45mmx18mmx1200flutedpolypropylenecavitybattensmayalsobeusedineitherhorizontalorverticalapplicationsabove.RefertoBRANZappraisalNo.524forfurtherspecificationinformation.
Cavibatcannotbestructurallyfixed.
2.� Rigid Wall Underlays / Rigid Air BarriersARigidWallUnderlayorRigidAirBarrier(RAB)shallbeincludedaspartofthecladdingsystem:
• InlocationsdefinedasExtraHighwindzonesaccordingtoTable3E2/AS1.
• WhereinteriorwallsarenotlinedorforexternalwallsofattachedgaragesthatareunlinedandshallbeinstalledaccordingtoTable23E2/AS1.
• Whereadditionalweathertightnessofthebuildingenvelopeisdesired.
ApprovedRABareasfollows:• Minimum6mmfibrecementsheet(e.g.:James
Hardie,BGC).• Minimum7mmH3.2DDPlywoodmanufactured
toAS/NZS2269andtestedinaccordancewithAS/NZS4284(e.g.CHHEcoply).
RigidAirBarriershallbefixedinaccordancewiththemanufacturer’sinstallationinstructionsandClause9.1.7.2E2/AS1.
RigidAirBarriersshallbeindependentlyappraisedbyanIANZorsimilarlyapprovedaccreditationagencyortestingfacility.
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2.4 Finishing MouldingsClelandsexteriormouldingsormouldingsthatmeettheE2/AS1shallbespecifiedtomatchtherelevanttimbersubstrateandweatherboardsystem.
Mouldingsshallgenerallybefixedwithnailsatamaximum450mmcentrepositionsoasnottopenetratethroughflashings.
Mouldingsshallhaveacontinuousbeadofsealantappliedwheretheymeetweatherboards,neighbouringmouldingsorjoinery.
2.5 Flashings• FlashingsshallbemadefromStainlessSteel,
GalvanisedSteel,UPVCorAluminium.
• SoakersforallBevelBackweatherboardmayalsobemadefromcopper.
• AllflashingmaterialsshallbecompatiblewithneighbouringmaterialsandcomplywithTables20,21,22ofE2/AS1NZBC.
• Flashingscanbesuppliedbythetimbermerchantorbythebuilderaccordingtothisspecification.
• Weatherboard fixings shall not penetrate through the flashings under any circumstances as this may jeopardize the weather tightness of the cladding system.
(Note: Quickflash flashings codes are suggested here for reference only. Other flashing suppliers/brands may be used as long as they comply with the specifications in this manual).
Quickflash Codehttp://www.quickflash.co.nz
Profile Scriber Bevelled Cornice
40mm,20mm D4S
Eaves Mould
Internal Corner
Cover Board
External Corner
Bevel Back X X X X X
Rusticated X X X X X X X
Vertical Shiplap X X X X X X X
6 –20mmCavityBaseCloser
BevelBackCornerandFlatSoakers
�07,�08–ParapetSaddleCapping
2�–40mmZFlashing
HemmedExternalCornerFlashing
�4–50mm,4–90mm
HemmedInternalCornerFlashing
�–50mm,40–70mm,
�–90mm
2�–SillFlashing
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2.6 Fixings• ShallbeinaccordancewithTable24ofNZBC
E2/AS1andNZS3604unlessotherwiseadvisedbelow.
• Fixingscanbesuppliedbythetimbermerchantorbythebuilderaccordingtothisspecification.
• Forbuildingslocatedinseaspray(‘ZoneD’Exposure)conditionsaccordingtoNZS3604,stainless316fixingsmustbeused.
2.6.� Fixing for paint finish weatherboardsShallbeofthefollowingspecification:
• Joltheadnail.
• Stainlesssteel,siliconebronzeorhotdipgalvanized.
• Toallowminimum�5mm penetration into the framing(whenusingpackercavitybattens)or35mmpenetrationintothebattenandframingcombined(whenusingstructuralcavitybattens).
Minimum Required Fixing Sizes
Profile Direct Fix Packer Cavity Batten
Packer Cavity with
RAB
BevelBack 75x3.15mm 90x4.0mm -
Rusticated 60x2.8mm 75x3.15mm 90x3.15mm
VerticalShiplap 60x2.8mm 75x3.15mm 90x3.15mm
Mouldings 40x2.80mm 40x2.80mm
�. Proprietary System ComponentsTheseitemsarenotsuppliedbyClelands.TheyshallbesourcedandsuppliedbythetimbermerchantorthebuildertoaspecificationthatconformstoNZBCrequirementsandaredeemedfitforuseintheenduseapplication.
�.2 Flexible Sealant-modifiedsiliconeexteriortype.
�.� Epoxy adhesive-twopotexterior.
�.4 Flexible Wall Underlay (Building wrap) or rigid Wall Underlay-toconformwithTable23ofE2/AS1.
�.5 PEF Backing Rod-closedcelltypedesignedforuseasabackingrod,sized25%largerthanthegapitistofill.
�.6 Flashing Tape-compatiblewithothercomponentsinthesystemincludingthebuildingwrap.
4. Installation Preparation4.� Framing
• Generally,thetimberframingmustcomplywithNZS3604(Timber-FramedBuildings),howeverwherespecificengineeringdesignisrequiredtheframingshallbeatleastofequivalentstiffnesstotheframingprovisionsofNZS3604.
• Themoisturecontentoftheframingmustnotexceed20%atthetimeoffixingtheweatherboard(problemsmayoccurlaterduetoexcessivetimbermovementifframingistoowet).
• Additionalframingmayberequiredatsoffits,corners,windowanddooropenings.
4.�.� Horizontal Weatherboards• Studsmustbespacedatamaximumof600mm
betweencentres.
• Dwangs(noggins)mustbespacedatamaximumof1350mmbetweencentres.
• Studsanddwangsmustformaflushplaneforcavitybattensandweatherboardstobefixedto.
Amendment to 4.1.1 point two approved 6th August 2015.
4.2 Flexible Wall Underlay (Building Wrap)Awaterproof,breathablebuildingwrap(e.g.WaterGatePlus)mustbefixedunderneathbattensandweatherboardsinaccordancewithTable12ofE2/AS1NZBC.
Flexiblewallunderlaysshallalsobe:
• Fixedinaccordancewith9.1.7.1E2/AS1.
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• Cutanddressedintoopeningsinaccordancewithfigure72Aand72BE2/AS1.
• HavecompliantandcompatibleflexibleflashingtapeappliedtoheadandsillframinginaccordancewithE2/AS1.
• Havepolypropylenestraporwireappliedtopreventbulgingofwrapcavityinaccordancewith9.1.8.5E2/AS1.
• Extendminimum35mmoverbottomplate.
4.� Rigid Wall Underlay• RigidWallUnderlays/RAB’sarerequiredinExtra
HighwindzonesaccordingtoTable3and23E2/AS1.
• RigidWallUnderlaysshallbefixedinaccordancewiththemanufacturer’sinstallationinstructionsandClause9.1.7.2E2/AS1including:
a) Sheetedgesshallbefixedoversolidframingwitha1-2mmexpansiongapbetweensheetsforfibrecementand2-3mmgapforplywood.Thismayvaryandmustbeverifiedwithmanufacturer’sspecificationpriortoinstallation.
b) Shallhaveflexibleunderlayfoldedintoopeningrevealsasper9.1.5a)E2/AS1.
c) Shallbeover-fixedwithflexiblewallunderlayfromTable23andinstalledinaccordancewith9.1.7.1E2/AS1(note:someproprietarysystemsmaynotrequirethis).
d) Shallhaveflexibleflashingtapeappliedtohead,sillframingopeningsandallsheetjoinsincludingcornerswithaminimum50mmlaptotheRAB.Flexibletapemustbecompatiblewiththewallunderlayandothersurroundingmaterials.
e) Shallextendpastthebottomplate 15-25mm.Thisshallbeconfirmedwiththe
RABmanufacturerpriortoinstallation.
f) ShallhaveflexibleflashingtapetotheRABandoverlappingthecavitycloseratthebottomofthecavity.
4.4 Drained CavitiesCavitiesshallcomplywithE2/AS1oftheNZBCparagraphs9.1.8to9.1.9.4.
4.4.� Packer cavity batten fixing methodTemporarilyfix20x45mmbattenswithfixingsat800mmcentreswith:
• 40x2.5mmflathead,hotdippedgalvanisednails;or
• 50x2.8mm‘D’flathead,power-driven,galvanisednails.
4.4.�.� CavibatCavibat45mmx18mmx1200mmflutedpolypropylenecavitybattensmayalsobeusedineitherhorizontalorverticalapplicationsabove.RefertoBRANZappraisalNo.524forfurtherspecificationinformation.Cavibat cannot be structurally fixed.
4.4.2 Inter-Story Junction• Aninter-storyjunctionshallbeusedfor
continuouscavitiesovertwostoriesor7metres.
• A‘Z’flashingshallbeusedwithatleast35mmcoverovertheweatherboardandwithaminimum15degreefallandallowing5mmminimumgapbetweenflashingandweatherboardinaccordancewithE2/AS1.
4.4.� Base of wall cavityThebaseofwallsincludingabovewindowheadsandinter-storyflashings:
• Shallhaveacavitybasecloserwithminimumventilationarea1000mm2permetrelength.
• Thecavityclosershallbepositionedtoallowatleast10mmdripedgetowallcladdingor15mmabovewindowanddoorheadflashings,inaccordancewith9.1.8.3E2/AS1.
4.4.4 Top of wall cavity• Shallbesealedoffusingasolid(non-castellated,
non-Cavibat)verticalcavitybattenrunninghorizontally.
4.4.5 Internal and external corners• Shallhaveverticalcavitybattensfixedwithat
least10mmgapbetweenbattens.
4.5 Head Flashings• Shallbefixedwithaflashingupstandofa
minimum35mmcoverwithtapeorunderlaylappedovertheflashing.
• ExtraHighwindzonesshallhaveaminimum75mmcoverflashingtoheadflashingupstandandextendaminimum60mmovertheweatherboard.
• Shallhaveaminimum15degreefallwith5mmgapbetweenheadflashingandweatherboardinaccordancewithE2/AS1.
• Shallbefixedwithstopends,with30mmcoverand,ifscribersareused,extend20mmpastthescriberinaccordancewithE2/AS1.
• Shallhaveairsealsbetweenrevealorframeinaccordancewith9.1.6E2/AS1,installedwith
self-expandingpolyurethanefoamoverPEFbackingrod.
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4.6 Window and Door Joinery• Maybetimberoraluminium.
• ShallmeettherequirementsofNZS4211.
• Shallbedesignedinaccordancewiththerelevantwindzone.
• ShallmeettherequirementsofE2/AS1.
• ShallhavesillsupportbarsinstalledinaccordancewithE2/AS1andwherepossiblesilltraysarerecommended.
• Shallhaveflexibleflashingtapearoundopeningsandovercavitycloserabovejoineryhead.
• Jambshallbescribedwithscribersealedtoweatherboardsandbemadeweathertightwithafoambondbreakandacontinuousbeadofsealantalongthejambline.
• Shallhaveflexibleairsealallsidesofjoinerypenetration,comprisingself-expandingpolyurethanefoamorsealantinstalledoverclosedPEFbackingrod.
• ForVeryHighandExtraHighwindzones,theheadflashingshallbesealedtothewindowflangeinaccordancewithE2/AS1.
4.7 Ground ClearanceGroundclearancebetweenbottomofcladdingandthegroundshallbeinaccordancewith9.1.3andTable18E2/AS1.Thebaseofthecladdingshall:
• Overlaptheconcreteslabbyaminimum50mm.
• Finish100mmaboveapavedsurface.
• Finish175mmaboveanunpavedsurface.
Thegroundshallhaveaslopeofatleast1:30toallowwatertoflowawayfromthebuilding.
4.8 DeckingRefertoE2/AS1forrequirementsspecifictothetypeofdeckingbeingused.
• Wherecladdingfinishesaboveadeckitshallfinishminimum35mmaboveadeckingsurfaceandhavea10mmdripedge.
• Wherecladdingfinishesnexttoslatteddeckingthereshallbeatleasta12mmgapbetweenthedeckingandcladdingwallsurface.
4.9 Meter Boxes• Shallbemanufacturedfromdurable,UV
resistant,non-combustiblematerialwithminimum20yearservicelifeexpectation.
• Shallbedesignedwithsillssoastoallowwatertoeasilydrainawayfrompossibleentrypoints.
• Shallhaveflashingtapearoundtheentireopening.
• Shallhavethebuildingwrapoverlappingthe‘Z’headflashing,andwiththeflashingtoberivetedandsealedtothetopmetreboxflashingwithaminimum10mmoverlap.
• Shallbesealedaroundallsideswithself-expandingpolyurethanefoamoverPEFbackingrod.
4.�0 Pipe Penetrations• Shallbeinaccordancewith9.1.9,9.1.9.1,9.1.9.3
andfigure68E2/AS1.
• Pipesshallbeinstalledwitha5degreefall,withappropriatesupportnogginunderneath.
• ShalluseanappropriatepipeflashingapprovedbyClelandsTimberorflashingtapetosealthepipetothebuildingwraporRABinaccordancewithE2/AS1.
• ShallhavesealantappliedoverPEFrodtomakepenetrationsthroughbothweatherboardandinteriorliningweathertight.
4.�� Parapets / Enclosed Balustrade• Cappingshallhaveminimum50yeardurability
andshallhave‘birdsbeak’styledripedge.
• Fixingpenetrationsthroughthecappingshallbemadethroughthesideonly.
• Cappingshallbeseparatedfromtimberbyroofunderlayorothersuitablematerial.
• Theslopeofthecapshallbeaminimumof5degrees.
• Thecappingshalloverlaptheweatherboardsby:
a) 50mm–LowtoHighWindZones
b) 70mm–VeryHighWindZones
c) 90mm–ExtraHighWindZones
• Expansionjointsmayberequiredforlengthsover8m–refertoE2/AS1.
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5. Installation Fixing Details5.� Bevel BackFixingsshallbedriventhroughthewallunderlayandintheframinginaccordancewithTable24E2/AS1.
• Fixingsshallbehanddriven.
• Weatherboardsshallbepredrilledpriortoapplicationoffixingwithadrillbitslightlysmallerthanthefixing.
• Nailplacementshallbe10mmabovethelap.
• Thelapbetweenboardsshallbe32mm.
• Opposingweathergroovesshallbelineduptoforman8x10mmweathergroove.
• Nailsshouldbeappliedatanupwardanglesoastoreducewateringressthroughthefixingpoint.
• Weatherboardsshallbefixedtoframingatmaximum600mmcentres.
• Weatherboardfixingsshallnotpenetratethroughtheflashingsunderanycircumstancesasthismayjeopardisetheweathertightnessofthecladdingsystem.
RefertoarchitecturaldrawingsforfurtherBevelBackfixingdetails.
Figure � – Bevel Back Fixing
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Figure 2 – Bevel Back – Base Of Wall - Concrete Floor
Figure � – Bevel Back – Base Of Wall - Timber Floor
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Figure 4 – Bevel Back – Enclosed Deck – Concrete Substrate
Figure 5 – Bevel Back – Enclosed Deck – Timber Substrate
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Figure 6 – Bevel Back – External 90° Corner – Boxed
Figure 7 – Bevel Back – External 90° Corner – Soakers
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Figure 8 – Bevel Back – External ��5° Corner – Soakers
Figure 9 – Bevel Back – Internal 90° Corner – Moulding
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Figure �0 – Bevel Back – Internal 90° Corner – Scribed & Notched
Figure �� – Bevel Back – Internal ��5° Corner – Scribed & Notched
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Figure �2 – Bevel Back – Inter-Storey Cavity Junction
Figure �� – Bevel Back – Meter Box Head
WallFraming
BuildingWrap
CavityBatten
BevelBackWeatherboard
Additionalbuildingwrapovercavityclosure
Cavitycloser
5mmmin.dripedge(Cavityclosuretobottomofcladding)
5mmcapillarygap
35mm‘z’flashing15°min.slope35mmmin.upstand35mmmin.covertoweatherboard
Packer
100mmcavityspacerswith5°min.fall
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Figure �4 – Bevel Back – Meter Box Jamb
Figure �5 – Bevel Back – Meter Box Sill
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Figure �6 – Bevel Back – Packer Cavity Batten
Figure �7 – Bevel Back – Parapet Balustrade Cap Flashing
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Figure �8 – Bevel Back – Parapet Balustrade Intersection With Wall – Scribed & Notched
Figure �9 – Bevel Back – Pipe Penetration
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Figure 20 – Bevel Back – Top Of Wall – Flat Soffit
Figure 2� – Bevel Back – Top Of Wall – No Soffit
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Figure 22 – Bevel Back – Top Of Wall – Sloping Soffit
Figure 2� – Bevel Back – Weatherboard Join
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Figure 24 – Bevel Back – Window Head
Figure 25 – Bevel Back – Window Jamb
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Figure 26 – Bevel Back – Window Sill
5.�.� Joins• Scarfjoinsshallbemitredandmadeover
battensonlywithonenailappliedeithersideofthejoinpredrilledatleast12mmfromtheends.Thejoinshallhavesealantappliedandbecoveredwithacorrosiveresistantflatsoaker.Joinsshallbestaggeredbyatleast600mm.
5.�.2 Corners• Shallbemadeweathertightwithhemfolded50
x50or70x70or90x90flashingsaccordingtothetypeofcornerbeingusedandthewindzone.
• Shallbeeither:
a) Scribedandnotchedwith90x90mmhemfoldedcornerflashing;or
b) Buttedto40x40mminternalcornermouldwith90x90hemfoldedcornerflashing.
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
5.�.2.2 External Corners
• Shallbemadeweathertightwithhemfolded50x50or70x70flashings.
• Shallbeeither:
a) Mitredandcoveredwithcorrosionresistantsoakerswith50x50hemfoldedflashing;or
b) Coveredwithexternalcoverboardsinconjunctionwithscribers.
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
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Figure 27 – Rusticated Fixing
5.2 RusticatedFixingsshallbedriventhroughthewallunderlayandintheframinginaccordancewithTable24E2/AS1.
• Fixingsshallbehanddriven.
• Weatherboardsshallbepredrilledpriortoapplicationoffixingwithadrillbitslightlysmallerthanthefixing.
• Nailplacementshallbe35mmfromtheedgeoftheweatherboardand/or10mmfromthesideofthelap.
• Thelapbetweenboardsshallbe25mmwithaminimum2mmexpansiongapbetweenboards.
• Weathergroovesshallbelineduptoforma6x6mmweathergroove.
• Nailsshouldbeappliedatanupwardanglesoastoreducewateringressthroughthefixingpoint.
• Weatherboardfixingsshallnotpenetratethroughtheflashingsunderanycircumstancesasthismayjeopardisetheweathertightnessofthecladdingsystem.
RefertoArchitecturaldrawingsforfurtherRusticatedfixingdetails.
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Figure 28 – Rusticated – Base Of Wall – Concrete Floor
Figure 29 – Rusticated – Base Of Wall – Timber Floor
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Figure �0 – Rusticated – Enclosed Deck – Concrete Substrate
Figure �� – Rusticated – Enclosed Deck – Timber Substrate
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Figure �2 – Rusticated – External 90° Corner – Boxed
Figure �� – Rusticated – External 90° Corner – Flush Moulding
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Figure �4 – Rusticated – External 90° Corner – Moulding
Figure �5 – Rusticated – External ��5° Corner – Boxed
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Figure �6 – Rusticated – Internal 90° Corner – Butted
Figure �7 – Rusticated – Internal 90° Corner – Flashing
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Figure �8 – Rusticated – Internal 90° Corner – Moulding
Figure �9 – Rusticated – Internal ��5° Corner – Flashing
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Figure 40 – Rusticated – Inter-Storey Cavity Junction
Figure 4� – Rusticated – Meter Box Head
WallFraming
BuildingWrap
CavityBatten
RusticatedWeatherboard
Additionalbuildingwrapovercavityclosure
Cavitycloser
5mmmin.dripedge(Cavityclosuretobottomofcladding)
5mmmin.capillarygap
35mm‘z’flashing15°min.slope35mmmin.upstand35mmmin.covertoweatherboard
100mmcavityspacerswith5°min.fall
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Figure 42 – Rusticated – Meter Box Jamb
Figure 4� – Rusticated – Meter Box Sill
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Figure 44 – Rusticated – Packer Cavity Batten
Figure 45 – Rusticated – Parapet Balustrade Cap Flashing
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Figure 46 – Rusticated – Parapet Balustrade Intersection With Wall – Butted
Figure 47 – Rusticated – Parapet Balustrade Intersection With Wall – Moulding
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Figure 48 – Rusticated – Pipe Penetration
Figure 49 – Rusticated – Top Of Wall – Flat Soffit
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Figure 50 – Rusticated – Top Of Wall – No Soffit
Figure 5� – Rusticated – Top Of Wall – Sloping Soffit
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Figure 52 – Rusticated – Weatherboard Join
Figure 5� – Rusticated – Window Head
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Figure 54 – Rusticated – Window Jamb
Figure 55 – Rusticated – Window Sill
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5.2.� Joins• Scarfjoinsshallbemitredandmadeover
battenswithonenailoneachsideofthejoinpredrilledatleast12mmfromtheends.Thejoinshallhaveflashingtapeappliedtothebackoftheboard,shallhavesealantappliedtothejoinandbeoptionallycoveredwithcorrosiveresistantflatsoakers.Joinsshallbestaggeredbyatleast600mm.
5.2.2 Corners5.2.2.� Internal Corners
• Shallbemadeweathertightwithhemfolded50x50or70x70or90x90flashingsaccordingtothetypeofcornerbeingusedandthewindzone.
• Shallbeeither:
a) Boardsbuttedevenlyintoa70x70hemfolded‘W’flashing;or
b) 40x40internalcorner,pluggedwith90x90hemfoldedflashing;or
c) Boardsbuttedwith‘S’cornermouldintocornerandpluggedasnecessarywith
70x70hemfoldedflashing.
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
5.2.2.2 External Corners
• Shallbemadeweathertightwithhemfolded50x50or70x70or90x90flashingsaccordingtothetypeofcornerbeingusedandthewindzone.
• Shalluseeither:
a) Cornermouldandpluggedwith50x50hemfoldedflashing;or
b) Cornermouldwith50x50hemfoldedflashing;or
c) Becoveredwithexternalcoverboardsandplugged50x50or70x70hemfoldedflashing.
(note: only c) corner detail is suitable for Extra High wind zones)
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
5.� Vertical ShiplapFixingsshallbedriventhroughthewallunderlayandintheframinginaccordancewithTable24E2/AS1.
• Fixingsshallbehanddriven.
• Weatherboardsshallbepredrilledpriortoapplicationoffixingwithadrillbitslightlysmallerthanthefixing.
• Nailplacementshallbe35mmfromtheedgeoftheweatherboardand/or10mmfromthesideofthelap.
• Thelapbetweenboardsshallbe25mmwithaminimum2mmexpansiongapbetweenboards.
• Weathergroovesshallbelineduptoforma6x6mmweathergroove.
• Nailsshouldbeappliedatanupwardanglesoasreducewateringressthroughthefixingpoint.
• Weatherboardfixingsshallnotpenetratethroughtheflashingsunderanycircumstancesasthismayjeopardisetheweathertightnessofthecladdingsystem.
RefertoArchitecturaldrawingsforfurtherVerticalShiplapfixingdetails.
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Figure 56 – Vertical Shiplap - Base of Wall – Concrete Floor
Figure 57 – Vertical Shiplap - Base of Wall – Timber Floor
CAVITY BATTEN FIXING
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Figure 58 – Vertical Shiplap - Enclosed Deck – Concrete Substrate
Figure 59 – Vertical Shiplap - Enclosed Deck – Timber Substrate
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Figure 60 – Vertical Shiplap - External 90° Corner – Boxed
Figure 6� – Vertical Shiplap - External 90° Corner – Flush Moulding
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Figure 62 – Vertical Shiplap - External 90° Corner – Moulding
Figure 6� – Vertical Shiplap - External 90° Corner – Rebated
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Figure 64 – Vertical Shiplap - External ��5° Corner – Boxed
Figure 65 – Vertical Shiplap - Internal 90° Corner – Butted
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Figure 66 – Vertical Shiplap - Internal 90° Corner – Flashing
Figure 67 – Vertical Shiplap - Internal 90° Corner – Moulding
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Figure 68 – Vertical Shiplap - Internal ��5° Corner – Flashing
Figure 69 – Vertical Shiplap - Inter-Storey Cavity Junction
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Figure 70 – Vertical Shiplap - Meter Box Head
Figure 7� – Vertical Shiplap - Meter Box Jamb
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Figure 7� – Vertical Shiplap - Packer Cavity Batten
75 x 3.15 jolt head nailpunched & puttied to achieve35mm min. penetration
Internal wall lining
Figure 72 – Vertical Shiplap - Meter Box Sill
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Figure 7� – Vertical Shiplap - Packer Cavity Batten
Figure 74 – Vertical Shiplap - Parapet Balustrade Cap Flashing
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Figure 75 –Vertical Shiplap - Parapet Balustrade Intersection With Wall – Butted
Figure 76 – Vertical Shiplap - Parapet Balustrade Intersection With Wall – Flashing
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Figure 77 – Vertical Shiplap - Parapet Balustrade Intersection With Wall – Moulding
Figure 78 – Vertical Shiplap - Pipe Penetration
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Figure 79 – Vertical Shiplap - Top Of Wall - Flat Soffit
Figure 80 – Vertical Shiplap - Top Of Wall - No Soffit
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Figure 8� – Vertical Shiplap - Top Of Wall - Sloping Soffit
Figure 82 – Vertical Shiplap - Weatherboard Join – Birdseye
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Figure 8� – Vertical Shiplap - Weatherboard Join
Figure 84 – Vertical Shiplap - Window Head
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Figure 85 – Vertical Shiplap - Window Jamb
Figure 86 – Vertical Shiplap - Window Sill
DIRECT FIX
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Figure 87 – Vertical Shiplap - Base of Wall – Concrete Floor
Figure 88 – Vertical Shiplap - Base of Wall – Timber Floor
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Figure 89 – Vertical Shiplap - Enclosed Deck – Concrete Substrate
Figure 90 – Vertical Shiplap - Enclosed Deck – Timber Substrate
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Figure 9� – Vertical Shiplap - External 90° Corner – Boxed
Figure 92 – Vertical Shiplap - External 90° Corner – Flush Moulding
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Figure 9� – Vertical Shiplap - External 90° Corner – Moulding
Figure 94 – Vertical Shiplap - External 90° Corner – Rebated
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Figure 95 – Vertical Shiplap – External ��5° Corner – Boxed
Figure 96 – Vertical Shiplap – Internal 90° Corner – Butted
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Figure 97 – Vertical Shiplap – Internal 90° Corner – Flashing
Figure 98 – Vertical Shiplap – Internal 90° Corner – Moulding
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Figure 99 – Vertical Shiplap – Internal ��5° Corner – Flashing
Figure �00 – Vertical Shiplap – Meter Box Head
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Figure �0� – Vertical Shiplap – Meter Box Jamb
Figure �02 – Vertical Shiplap – Meter Box Sill
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Figure �0� – Vertical Shiplap – Pipe Penetration
Figure �04 – Vertical Shiplap – Top Of Wall – Flat Soffit
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Figure �05 – Vertical Shiplap – Top Of Wall – No Soffit
Figure �06 – Vertical Shiplap – Top Of Wall – Sloping Soffit
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Figure �07 – Vertical Shiplap – Weatherboard Fixing
Figure �08 – Vertical Shiplap – Weatherboard Join – Birdseye
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Figure �09 – Vertical Shiplap – Weatherboard Join
Figure ��0 – Vertical Shiplap – Window Head
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Figure ��� – Vertical Shiplap – Window Jamb
5.�.� Joins• Scarfjoinsshallbemitredsoastoallowwater
runoffdownthefaceofthecladdingandbemadeoverbattenswithonenailoneachsideofthejoinpredrilledatleast12mmfromtheends.Thejoinshallhaveflashingtapeappliedtothebackoftheboard,shallhavesealantappliedtothejoinandbeoptionallycoveredwithcorrosiveresistantflatsoakers.Joinsshallbestaggeredbyatleast450mm.
5.�.2 Corners5.�.2.� Internal Corners
• Shallbemadeweathertightwithhemfolded50x50or70x70or90x90flashingsaccordingtothetypeofcornerbeingusedandthewindzone.
• Shallbeeither:
a) Boardsbuttedevenlyintoa70x70hemfolded‘W’flashing;or
b) 40x40internalcornerwith90x90hemfoldedflashing;or
c) BoardsbuttedwithD4Scornermouldontopwith70x70hemfoldedflashing.
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
5.�.2.2 External Corners
• Shallbemadeweathertightwithhemfolded50x50or70x70flashingsaccordingtothetypeofcornerbeingusedandtheWindZone.
• Shalluseeither:
a) Cornermouldwith50x50hemfoldedflashing;or
b) Routedandnotchedtogetherandsealedwithconstructionadhesive;or
c) Becoveredwithexternalcoverboardsand50x50or70x70hemfoldedflashing.
(Note: only c) corner detail is suitable for Extra High wind zones)
• Acontinuousbeadofsealantshallbeappliedwheremouldingsmeetweatherboardsandneighbouringmouldingsorjoinery.
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6. Paint Finish Weatherboards6.� Things to expect
• Claddinginnorthfacingorheavyweatherexposedaspectsagequickerthantimberlocatedinotheraspects.
• Somemovementoftimberasitexpandsandcontracts.
• Possibleminorsurfacecracking(checking).
6.2 Minimum maintenance• Claddingmustbecleanedregularly(minimum
every12months)withmilddetergentandasoftbrush,rinsewithwater.Note:Highpressurewaterblastingisnotallowed.
• Amaintenanceassessmentisrequiredatleasteverytwosummersasfollows:
a) Sandbackareasofweatherboardwhereflakingorcrackingisoccurring.Puttyandsandasappropriate,thenspotprimeandapplytwocoatsofexteriorpaintasrequired.
b) Checkallweatherboards,junctions,flashings,mouldingsandreplaceorremediatepartsasrequiredtomaintaintheweathertightnessofthecladdingsystem.
c) Recoattheweatherboardswithexteriorpaintasrequiredbythecoatingmanufacturer’srecommendations(typicallybetween5to10years).
7. Contact DetailsClelands Timber Products Limited61KatereRoadPOBox3240,NewPlymouth4341Ph:0800100095Fax:0800114488
www.clelands.co.nz
8. DisclaimerTherecommendationscontainedinthisdocumentarebasedongoodbuildingpractice,butarenotanexhaustivestatementofallrelevantinformation.ThesuccessfulperformanceofthesystemreliesonmanyfactorsoutsidethecontrolofClelandsTimberProductsLtdsuchasthequalityofworkmanshipanddesign.ClelandsTimberProductsLtdshallnotbeliablefortherecommendationsmadeinitsliteratureandtheperformanceofthesystemincludingconformancewiththeNZBC,regulationsandstandards.Itistheresponsibilityofthebuildingdesignertoensurethatthedetailsandrecommendationsprovidedaresuitablefortheintendedprojectandthatthedesignisexecutedappropriately.
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