Clelands Timber CodeMark™...A Rigid Wall Underlay or Rigid Air Barrier (RAB) shall be included as...

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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.


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Figure 27 – Rusticated Fixing

5.2 RusticatedFixingsshallbedriventhroughthewallunderlayandintheframinginaccordancewithTable24E2/AS1.



• Nailplacementshallbe35mmfromtheedgeoftheweatherboardand/or10mmfromthesideofthelap.

• Thelapbetweenboardsshallbe25mmwithaminimum2mmexpansiongapbetweenboards.

• Weathergroovesshallbelineduptoforma6x6mmweathergroove.

• Nailsshouldbeappliedatanupwardanglesoastoreducewateringressthroughthefixingpoint.


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.


5.2.2.2 External Corners


• Shalluseeither:

a) Cornermouldandpluggedwith50x50hemfoldedflashing;or

b) Cornermouldwith50x50hemfoldedflashing;or

c) Becoveredwithexternalcoverboardsandplugged50x50or70x70hemfoldedflashing.

(note: only c) corner detail is suitable for Extra High wind zones)


5.� Vertical ShiplapFixingsshallbedriventhroughthewallunderlayandintheframinginaccordancewithTable24E2/AS1.



• Nailplacementshallbe35mmfromtheedgeoftheweatherboardand/or10mmfromthesideofthelap.

• Thelapbetweenboardsshallbe25mmwithaminimum2mmexpansiongapbetweenboards.

• Weathergroovesshallbelineduptoforma6x6mmweathergroove.

• Nailsshouldbeappliedatanupwardanglesoasreducewateringressthroughthefixingpoint.


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

4�

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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

4�

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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

5�

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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

6�

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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

6�

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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


• Shallbeeither:

a) Boardsbuttedevenlyintoa70x70hemfolded‘W’flashing;or

b) 40x40internalcornerwith90x90hemfoldedflashing;or

c) BoardsbuttedwithD4Scornermouldontopwith70x70hemfoldedflashing.


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)


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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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