S P E C I F I E R S A N D B U I L D E R S G U I D E · 2015. 1. 12. · AS3566 Class 3 and 4 are fully compatible with all products. 5. Fasteners used on COLORSTEEL® prepainted steel

June 2010(Replaces November 2005)

S P E C I F I E R S A N D B U I L D E R S G U I D E

Description •

Quality Accreditation 1

Design for Durability 1

AnimalShelters 1

Corrosion 2

Run-offfromInertMaterials 3

DrinkingWater 4

EdgeSealingofCOLORSTEEL®Products 4

ExpansionAllowanceandTemperature 4

FixingsandFasteners 5

Flues–Domestic/Industrial 6

FootTrafficonRoofs 6

FumeExtractorsandVents 7

GeothermalAreas 7

MixingofBrands 8

Overpaintingof COLORSTEEL®PrepaintedSteelProducts 8

ProcessingPlants 8

ProfileBendDiameters– Roofing,WallCladdingandAccessories 9

SolarHeatingPanelsorRubberMats 9

SwarfStainingofRoofingandCladding 10

UnwashedAreas 10

WaterPonding 12

WeatheringofCOLORSTEEL®Products 12

New Zealand Steel Limited Products and the New Zealand Building Code 13

ConformingwiththeBuildingCode 13

ExternalMoistureE2/AS1 13

Fire:“OutbreakofFire”– BuildingCodeC/AS1 13

ControlofExternalFireSpread 14

Maintenance 14

Environmental Categories and Product Recommendations 15-18

SpecialEnvironments 19

CommercialWarranties 20

Installation Information 21

InformationtoHelpAvoidProblems 21

Technical Features 22

CorrosionProtection 22

UVProtection 22

Profile Design Information 23

How to Specify New Zealand Steel Limited Roofing and Cladding Products 23

FurtherCoating/SurfaceOptions 23

FurtherInformation •

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DESCRIPTIONDESCRIPTION

NewZealandSteelproducesarangeofcoatedsteelproducts.

COLORSTEEL®prepaintedsteeldescribesthosesteelbuildingmaterialswhichhaveoven-curedpaintappliedtoagalvanisedorZINCALUME®steelbaseonacontinuous‘coiltocoil’operationattheNewZealandSteelGlenbrookworks.

Theprepaintingprocessgivesexcellentadhesionofthecoatingtothesubstrate,allowingrollformingtobeperformedafterpaintingwithoutdelaminationordeteriorationofthepaintfilm.

AvarietyofCOLORSTEEL®prepaintedsteelcoatingtypesisoffered.AllCOLORSTEEL®productsareproducedusingeitheraZINCALUME®steelsubstratewithanAZ150orAZ200coatingclass,(i.e.:150g/m2or200g/m2ofzinc/aluminiumalloy),oragalvanisedsteelsubstratewithaZM275coatingclass(i.e.275g/m2ofzinc).

DatasheetsoneachoftheCOLORSTEEL®prepaintedsteelcoatingtypesmaybeobtainedfromNewZealandSteelLimitedoranystockistsofCOLORSTEEL®prepaintedsteel.

COLORSTEEL®MAXX™productshaveaZINCALUME®coatedsteelbase.ThisproductisintendedforVerySevereenvironments.

COLORSTEEL®ENDURA™prepaintedsteelhasaZINCALUME®coatedsteelbaseandisavailableinarangeofcolours,selectedfortheirabilitytoprovideoptimumperformance,durabilityandappeal.

ZINCALUME®zinc/aluminiumalloy–coatedsteelhasa45%zinc,55%aluminiumalloycoatingwhichofferssuperiorcorrosionresistancecomparedtogalvanisedsteelinmostenvironments(particularlycoastalenvironments).

TraditionalgalvanisedsteelisofferedunderthetradenameofGALVSTEEL™.Thismaterialhasa100%zinccoatingandisavailableinarangeofdimensions,grades,zinccoatingweightsandtypes.

AXXIS®SteelforFramingisabrandofgalvanised,high-tensilesteelsuppliedforsteelframesandtrusses,usedinresidentialandsimilarconstruction.

DatasheetsoneachoftheCOLORSTEEL®prepaintedsteelcoatingtypesmaybeobtainedfromNewZealandSteelLimitedoranystockistsofCOLORSTEEL®prepaintedsteel.

Wherethereisarequirementforaverydurableproductwithhighaestheticappealandlowcostsofinstallationandmaintenance,thenCOLORSTEEL®prepaintedsteelproductsshouldbespecified.

Eachproductisdesignedforapplicationinaspecificenvironment.Theseapplicationsarediscussedundertheheading“TheNewZealandBuildingCode”laterinthispublication.

QUALITY ACCREDITATIONQUALITY ACCREDITATION

TheNewZealandSteelLimitedPaintLinereceivedaccreditationtoISO9002inApril1992andhassubsequentlybeenupgradedtoISO9001sinceJuly1993.Anon-goingprogrammeofcontinuousimprovementwillensurethatpracticeatNewZealandSteelLimitedcontinuestoreflectthebestavailableinternationaltechnology.

DESIGN FOR DURABILITYDESIGN FOR DURABILITY

Designhasamajorimpactonthedurabilityofthebuilding.Agooddesignwillensurethatyouwillgetthebestpossiblelifefromyourbuildingandreducemaintenancecosts.

The following design elements are presented alphabetically with guides to provide improved durability.

ANIMAL SHELTERSANIMAL SHELTERS

Someagriculturalapplicationsmaycreateinternalenvironmentsinwhichthebuild-upofpollutantsorfumesisapotentialsourceofcorrosion.Acorrosiveammoniaenvironmentcandevelopwithinshedsusedforintensiveanimalfarming.

ZINCALUME®,COLORSTEEL®ENDURA™orCOLORSTEEL®MAXX™shouldnotbeusedforthisapplication.

Design Guide:Design Guide:

1. ContactNewZealandSteelLimitedforspecialistadvice.

2. ZINCALUME®STEELORCOLORSTEEL®SHOULDNOTBEUSEDINTHISENVIRONMENTDUETOEXTREMECORROSIONRISK.

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CORROSIONCORROSION

Dissimilar Metals CorrosionDissimilar Metals Corrosion

Whentwodifferentmetalsareincontactandmoistureispresent,onemetalisrelativelyprotectedwhiletheothersuffersacceleratedcorrosion.Thisisknownasgalvanicorbi-metalliccorrosion.Asimilareffectcommonlyoccurswithwaterflowingoverdissimilarmetals.

Thisformofcorrosioniscommonlyfound:

1. Wherewaterisdischargedfromcopperorbrasssystemsoveragalvanised,orCOLORSTEEL®prepaintedsteelorZINCALUME®coatedsteelroof.

2. WhereunpaintedleadflashingsareapplieddirectlytoZINCALUME®coatedsteelproducts.(ReferInformationBulletinNo.2“FlashingMaterials”).

3. Wherefastenersareincompatiblewiththeroofingmaterial.(SeeFixingsandFasteners,page5).


1. SeparatedissimilarmetalsbyusingabarriersuchasPVCtape,neutralcuresiliconesealant oranappropriatepaintsystem.

2. Preventpotentialrun-offfromcopperorbrasspipesoverGALVSTEEL™,ZINCALUME®coatedsteelorCOLORSTEEL®prepaintedsteelsurfacesbydivertingthedischargeclearoftheroofing.CopperpipesmustbeisolatedfromAXXIS®SteelforFraming.

Note: Coastal areas

with high salt levels

and high humidity

will increase the

possibility of

dissimilar metals

corrosion.

Compatibility

More Active Metals

More Noble Metals

Thischartlistscommonlyusedmetalsina“GalvanicSeries”.Ifanyofthesemetalsareindampcontactorarun–offsituation,themetalhigheronthetablewillsacrificeitselftoprotectthemetalloweronthescale.Thereforethesimpleruleistorememberthatyoucanrunwaterdownbutnotuphill.Forexample,zinctocopperisalrightbutcoppertozincisnot.

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ZINC ZINCALUME®

ALUMINIUM

STEEL

LEAD

COPPER

STAINLESS STEEL

RUN-OFF FROM INERT MATERIALSRUN-OFF FROM INERT MATERIALS

Thezinccoatingongalvanisedsteelproductsdevelopsaprotectivesurfacefilmasaresultofnaturalweathering.ThisprovidesthelongevityofperformancewhichwehavecometoexpectfromGALVSTEEL™products.

Whenflowingovergalvanisedroofing,rainwaterdissolvessmallamountsofmineralsandsaltsfromthezincsurface.Thesemineralsandsaltspromoteandmaintaintheprotectivefilmandenhancethecorrosionresistanceofdownstreamgalvanisedsteelproducts(eg:lean-toroofs,guttersandvalleys).

Howeverwhenrainwaterflowsover,oriscollectedfromroofingmaterialswhichdonotpromotethisprotectivefilm(INERTMATERIALS),acceleratedcorrosionofunpaintedgalvanisedsteelroofsandgutterscanoccur.

SomeExamplesofInertMaterials:

•ZINCALUME®steel•Glass•Fibreglass•COLORSTEEL®prepaintedsteel•GlazedTiles•PVC•Acrylic•Aluminium


1. Ongalvanisedroofing,runskylightsdowntothegutter.

2. ToachievemaximumlifefromyourrainwatergoodswerecommendthattheyaremanufacturedfromeitherZINCALUME®steelorCOLORSTEEL®prepaintedsteelproducts.

3. Unpaintedgalvanisedsteelmustnotbeusedforroofingorrainwatergoods,includingvalleysandgutters,tocollectwaterrun-offfromZINCALUME®coatedsteelproductsoranyotherinertmaterial.

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DRINkING WATERDRINkING WATER

RainwatercollectedfromroofscladwithproductsmadefromGALVSTEEL™,ZINCALUME®coatedsteelandCOLORSTEEL®prepaintedsteel,willcomplywiththeprovisionsofNZBCG12.3.1,providedthewaterisnotcontaminatedfromothersources.

Thefirst25mmofrainfallfromanewlyinstalledroofmustbediscardedbeforedrinkingwatercollectionstarts.

Whereapaintorpaintsystemisappliedtotheroof,itssuitabilityforthecollectionofdrinkingwatermustbeestablished.

EDGE SEALING OF COLORSTEELEDGE SEALING OF COLORSTEEL®® PRODUCTS PRODUCTS

EdgesealingofCOLORSTEEL®productsisnotrecommended.(SeeEnvironmentalCategoriesandProductRecommendationssection).

EXPANSION ALLOWANCE AND TEMPERATUREEXPANSION ALLOWANCE AND TEMPERATURE

Allroofingandcladdingissubjecttoexpansionandcontractionduetotemperatureextremes.Thisisparticularlyevidentwithdarkercoloursandlongspanswheretheexpansionmaybeasmuchas8.0mmfora10.0metresheet.Fixingsystemsmustallowforexpansionandaccommodatethelongitudinalmovementwhichresults.


Typical Roof Temperatures Summer Average - Calm Conditions

INSULATED UNINSULATED

LightColours(egTitania)* 58˚C 48˚C

MediumColours(egMistGreen) 79˚C 67˚C

DarkColours(egKaraka) 92˚C 77˚C

*Light Colours include

unpainted galvanised

and ZINCALUME®

steel material.

Typical Roof Expansions

Basedon0.01mm/m/˚C

8METRERUN 12METRERUN 18METRERUN

LightColours* 5mm 7mm 11mm

MediumColours 6mm 10mm 14mm

DarkColours 7mm 11mm 17mm

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FIXINGS AND FASTENERSFIXINGS AND FASTENERS

Theselectionoftheappropriateformoffastenerisataskwhichshouldnotbesolelyinfluencedbycost.Fastenercostsareminimalrelativetotheoverallprojectandthereisnobenefittobegainedthroughtheuseofinferiorfixings.Thefastenerdurabilityshouldequalorexceedthatoftheroofingorcladdingproduct.

The“MetalRoofingandWallCladdingCodeofPractice”providessomeinformationonselection,fixingmethodsandplacementoffasteners.ThishandbookisavailableonrequestfrommembersoftheNewZealandMetalRoofingManufacturersIncorporatedorNewZealandSteelLimited.Moredetailedinformationcanalsobeobtainedfromfastenermanufacturers.


1. FastenerperformanceshouldconformwiththerequirementsofAS3566(andAmendments)“Screws–SelfDrillingfortheBuildingandConstructionIndustries”.

2. Stainlesssteelandstainlesssteelcappedfastenersarenotrecommendedforusewith ZINCALUME®coatedsteelorCOLORSTEEL®prepaintedsteelproductsinallenvironmentsduetoincompatibility.

3. Lowcarbon,nonconductingsealingwashersarerequiredforusewithCOLORSTEEL®prepaintedsteelproductsandZINCALUME®coatedsteelproducts.

Theadviceofspecialistfastenermanufacturersisreadilyavailableandthesemanufacturers shouldbeconsulted,particularlywhereCOLORSTEEL®prepaintedsteelproductsaretobe fixedinVerySevereorSevereEnvironments.(seeEnvironmentalCategoriesandProduct Recommendations,page15).

4. Fastenerswithheavyzincorzinc-tincoatingsorzincalloycoatedheadscomplyingwithAS3566Class3and4arefullycompatiblewithallproducts.

5. FastenersusedonCOLORSTEEL®prepaintedsteelproductsshouldbefactorycoatedto provideanaccuratecolourmatchwithCOLORSTEEL®prepaintedfinishes.

6. Rivets: Rivets:

• UsealuminiumrivetsforjoiningallNewZealandSteelLimitedroofingproducts. (Ensurerivetisofasuitablestrengthforthepurpose.Refertoyourrivetsupplier).

• Monelrivetsarenotrecommendedastheyareincompatibleduetotheircoppercontent.

NR:NewZealandSteelproductnotrecommendedforexteriorapplicationsfortheseEnvironmentalCategories.

4: Heavyzincorzinc-tincoatingsorzincalloycoatedheadscomplyingwithAS3566.2–2002Class4.

3: Heavyzincorzinc-tincoatingscomplyingwithAS3566.2–2002Class3.

*Seepage16fordefinitionsofEnvironmentalCategories.

Note:

1. StainlesssteelfastenersarenotrecommendedforusewithZINCALUME®coatedsteelor COLORSTEEL®prepaintedsteelproductsinallenvironments.

2. Sealingwashersthatcontaincarbonblackfillerlevelsofmorethan15%byvolumemayleadtocorrosionofZINCALUME®steelandCOLORSTEEL®prepaintedsteelproducts.Therefore,allfastenersforNewZealandSteelroofingproductsshouldhavelowcarbon,non-conductingsealingwashers.

3. RefertoInformationBulletin10.

Fastener Recommendations

Environmental ISO GALVSTEEL™ ZINCALUME® COLORSTEEL® COLORSTEEL® Category* ENDURA™ MAXX™

Coastal:VerySevere C5 NR NR NR 4Severe C4 NR NR 4 4Moderate C3 3,4 3,4 3,4 3,4

Industrial:VerySevere C5 NR NR NR 4Severe C4 NR NR 4 4Moderate C3 3,4 3,4 3,4 3,4

Inland:Moderate C2 3 3 3 3,4

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FLUES – DOMESTIC/INDUSTRIALFLUES – DOMESTIC/INDUSTRIAL

Naturalgas,wood,coaloroil-firedheatersgeneratehighlevelsofsulphurcompounds.Whenventedoveraroof,particularlyindampconditions,sulphuricacidformswhichwillleadtoprematurecorrosionoftheroof,gutteringanddownpipes.


1. Designtheheightofthefluetoallowcombustionby-productstobedissipated.

2. SpecifyaCOLORSTEEL®prepaintedsteelproductdesignedforverysevereenvironments.

3. Ensurethatheatersarerunasefficientlyaspossibletoallowcompletecombustion.

4. Regularlywashtherooftoremovecontaminants.

FOOT TRAFFIC ON ROOFSFOOT TRAFFIC ON ROOFS

Repeatedfoottrafficandthedraggingofmaintenanceorcleaningequipment,maydamagetheroofwhichwillreduceitslifeexpectancy.


1. Designandinstallcatwalksandplatformsovertheroofwherenecessary.

2. Aluminiumorgalvanisedsteelcatwalksarerecommended.

3. Designcatwalksandplatformssoasnottocreateanunwashedorpondingareaontheroof.

4. Timbercatwalksandplatformswillcausepreferentialcorrosionofunderlyingroof.

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FUME EXTRACTORS AND VENTSFUME EXTRACTORS AND VENTS

Corrosivedustandparticlescanbereleasedthroughroofventsanddischargedontotheroofsurface.Theimmediateareaoftheroofadjacenttotheventisthenatincreasedriskofcorrosion.


1. Installfilterelementstocontainhazardousmaterial.

2. SpecifyaCOLORSTEEL®prepaintedsteelproductdesignedforverysevereenvironmentsto beinstalledadjacenttothevent.

3. Considerapplyingasuitableprotectivecoatingtotheaffectedareaoftheroof.

4. Maintaincoaloroilfiredboilersorincineratorssothattheydonotdischargehighsulphur levelsovertheroofsurface.

5. Regularlywashtherooftoremovecontaminants.

GEOTHERMAL AREASGEOTHERMAL AREAS

Inareasofgeothermalactivity,hydrogensulphidesassociatedwithboreemissionscancausecorrosionproblems.Althoughheavierthanair,hydrogensulphidecanbedrawnintorainwaterdown-pipesandaccumulateingutters.Thiscanleadtocorrosionoftheguttersandtheroofoverhangs.


1. Installawatertrapatthebaseofdown-pipes.

2. SpecifytheappropriateCOLORSTEEL®prepaintedsteelproduct.


MIXING OF BRANDSMIXING OF BRANDS

Wheredifferentbrandsofprepaintedmaterialareusedonthesamebuilding,differencesincolour,glossandweatheringperformancemayappearobviouswithinashortperiodoftime.Thiswillbeduetothedifferentpaintformulationsusedbydifferentmanufacturers.

NewZealandSteelLimitedwillnotacceptliabilityforproblemscausedbythemixingofbrands.


1. SpecifyeitherCOLORSTEEL®ENDURA™orCOLORSTEEL®MAXX™products.

OVERPAINTING OF COLORSTEELOVERPAINTING OF COLORSTEEL®® PREPAINTED STEEL PRODUCTS PREPAINTED STEEL PRODUCTS

COLORSTEEL®prepaintedsteelproductsaredesignedfordurability.However,allpaintcoatingswilldeteriorateovertime.Therefore,atsomestage,itwillbenecessarytorepainttoavoidseriousdeteriorationoftheproduct.

Themainconsiderationisthepaintcoatingintegritytoperformasuitablebondfortheoverpaintedsystemsothatthedurabilityofthenewcoatingsystemismaintained.

NewZealandSteel’sexperiencewouldindicatethatthisperiodtofirstrepaintisaround15years.However,localclimaticconditions,buildingdesignandpaintcolourcanhaveasignificantinfluenceontheperformanceofthepaintsystem.ThereforeyoumayneedtoconsultNewZealandSteelorourpaintsuppliers,PPGIndustriesNZLtd,tohelpassessthemostsuitabletimetorepaint.

COLORSTEEL®prepaintedsteelproductsmaybereadilyoverpainted,aftersuitablepreparation,foraestheticreasons.DetailedinformationisavailableintheNewZealandSteelLimitedInformationBrochure:OverpaintingNewandWeatheredSteelRoofing.

PROCESSING PLANTS PROCESSING PLANTS (IncludingSwimmingPools)

Somecommercialapplicationsmaycreateinternalenvironmentsinwhichthebuild-upofpollutantsorfumesareapotentialsourceofcorrosion.Plantswherechlorinevapoursarereleased(includingenclosedswimmingpools)shouldhaveadequateventilationtominimisetherisks.


1. Wherepollutantsorhumiditylevelsarelikelytobehigh,allowforfrequentairchanges.

2. Passiveventilationmaybeinadequatetocopewiththeproblemandtheinstallationoffan systemsshouldbeconsideredandincorporatedatthedesignstage.


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PROFILE BEND DIAMETERS – ROOFING, WALL CLADDING AND ACCESSORIESPROFILE BEND DIAMETERS – ROOFING, WALL CLADDING AND ACCESSORIES

NewZealandSteelLimitedproductsarecustomdesignedtoensuremaximumcompatibilitywiththeroll-formingprocess.Thepaintsystemsaredesignedtobedurableandadheretothemetalsubstratesothattheyarenotaffectedbygoodroll-formingpractices.However,tighttensionbendsinthefinishedproductshouldbeavoidedassmallcracksmaybeformedwhichexposethemetalsubstratetotheatmosphere.

For optimum corrosion performance no visible microcracking should be present in the finished product. Therearemanyfactors,substrate,paint,benddiameterandformingpractice,thataffectthetendencytomicrocrack.Therefore,itisnotpracticaltohaveafixedbenddiameterthatguaranteesnomicrocracking.

Mostproducts,formedinwelldesignedandoperatedequipment,willnothavemicrocracksattensionbends.Itisimportantthatvisualchecksformicrocrackingbemadeonthefinishedproducttoensureahighqualitystandardismaintained.

Productswithmicrocrackingonthetensionbendswillshowearliersignsofcorrosionwhenusedinunwashedareasinsevereenvironments.


1. Theuseofcorrugatedprofilesinsevereand‘specialconditions’(e.g.Geothermal)willhelptoensuregreaterdurability.

SOLAR HEATING PANELS OR RUBBER MATSSOLAR HEATING PANELS OR RUBBER MATS

Duringtheinstallationofsolarheatingsystems,careshouldbetakentopreventanydamagetotheroofingmaterial.Becauseofthehightemperaturescreatedandtheincreasedcondensationwhichmayresult,careshouldbetakentomaintainanairspacebetweentheroofandtheheatingunit.Followmanufacturers’recommendationsconcerningtubedirectionandtheuseoffixingsupportbrackets.

FailuretodothismayinvalidateaCOLORSTEEL®prepaintedsteelproductwarranty.


1. Neverplaceheatingelementsorplumbingunitsdirectlyontheroofsurface.Followthesystemsupplier’srecommendationsconcerninginstallation.

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SWARF STAINING OF ROOFING AND CLADDING SWARF STAINING OF ROOFING AND CLADDING

Swarfisthetermgiventosteeldebrisarisingfromcuttingorpiercingoperationswhenusingfrictionsaws,abrasivediscs,drillsetc.,onsteelroofingandcladdingproducts.Whilstcomprisingmostlyfinesteelparticlesmixedwithabrasive,inthiscontextswarfmayalsobetakentoincludeanyotherdiscardedsteelobjectssuchasrivetshanks,nails,screwsandnuts,whichmaycomeintocontactwithcoatedproducts;ie:COLORSTEEL®prepaintedsteel,ZINCALUME®zinc/aluminiumalloy-coatedsteelandgalvanisedsteel.

Swarfparticles,ifleftonthesurface,willcorrodeandcauseruststainswhichwilldetractfromthefinishedappearanceofaproject.Thesestainsareoftenmistakenforearlydeteriorationoftheroofingandcladdingitself.


1. Neverleaveswarfmaterialonthecoatedsurface.Followtherecommendationsincludedin theNewZealandSteelLimitedInstallersGuideorInformationBulletin7.

UNWASHED AREASUNWASHED AREAS

Whencontaminantssuchaswindblownsaltanddustaccumulateonpaintedsurfacesandbecomedamp,corrosionwilltakeplace.Manywindblowncontaminantsabsorbmoisturewhenexposedtohighhumidityandtheirpresenceonsteelacceleratescorrosion.

Forthisreason,areasonabuildingwhichareseldomwashedbyrainareparticularlypronetoearlybreakdownofthematerial.

Thiseffectmayfirstbenoticedasawhitecorrosionproduct,typicallyseenontheundersideofgutters,canopies,roofventsoronshelteredareasandtheundersideofprofilesusedhorizontallyaswallcladding.Itwillbemorenoticeablewheretighterradiusbendshavebeenusedinrollforming.

Evenoncoatedsteelwherecorrosionreactionsaremuchslower,thepresenceofcontaminantsoverlongperiodsoftimewillincreasetherateofcorrosion.

Themaintenanceregimesforunwashedareas,necessarytomeetthedurabilityrequirementsoftheBuildingCode,areshownonpages17and18ofthispublication.

WhentheundersideofZINCALUME®steelandCOLORSTEEL®prepaintedsteelproductsisexposedinanunwashedarea,e.g.:canopies,verandas,eaves,leantobuildingsetc.,additionalmaintenance,abovethatspecifiedonpages17and18,isrequiredtoensuresatisfactoryperformanceoftheproduct.


1. Everyeffortmustbemadeduringthedesignofthebuildingtoeliminateorminimiseshelteredoroverhangingareas.

2. ConsiderationshouldbegivenduringthedesignstagetoensuretheundersideofZINCALUME®steelandCOLORSTEEL®prepaintedsteelisenclosedandthereforenotexposedtotheenvironment.

3. Whereunwashedareascannotbedesignedout,specifyregularwashingoftheseareasas partofanongoingmaintenanceprogramme.Refertopages17and18forNewZealandSteelLimitedrecommendations.

4. Designconsiderationforeasyaccessmustbegiventoareasthatrequireregularmaintenance.

5. Ensureprofilebendsarenottighterthanthoserecommendedundertheheadingof“Profile BendDiameters–Roofing,WallCladdingandAccessories”,andthattherearenomicrocracksinthefinishedproduct.

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WATER PONDINGWATER PONDING

RoofsRoofs

Wheretheroofpitchislow,changesinroofloadingsmayresultinanegativepitchandconsequentlyleadtowaterponding.WaterpondingisdetrimentaltotheperformanceofCOLORSTEEL®prepaintedsteelproducts.Thefollowingconditionscommonlycausewaterponding:

• Over-spacedpurlins.

• Deformationoftimberpurlins.

• Placementofexternalloadssuchasairconditioningunits.

• Rigidfixingonlongspanswhichcausesdeformationoftheprofileasaresultof thermalexpansion.


1. Neveruseapitchoflessthan3degreesortheminimumrecommendedfortheprofile,whicheverisgreater.Pitchesoflessthanthisinvalidatethewarranty.

2. Designtheroofaccordingtotheprofilemanufacturer’sspecifications.

3. Onminimumpitchroofs,ensurethatthegutterendofprofiledsheetsisturneddown.

4. Allowforthermalexpansiontopreventprofiledistortion.

5. Considertheuseofwalkwaystopreventdamagewheretheroofmaybesubjecttoheavyfoottraffic.

6. Ensureroofpenetrationsdonotblocktheflowofwaterfromtheroof.

Note:Pleasereferto“NewZealandSteelLimitedProductsandtheNewZealandBuildingCode”onpage13ofthispublicationunder“E2/AS1ExternalMoisture”

GuttersGutters

Guttersmustbeinstalledwithadequatefalltoensureallwateristransportedtoappropriatelylocateddownpipes.Pondingoccurswhenwaterremainsinthegutterwhenthefallisinadequate.Overtime,thiscausesdegradationtothecoatingandultimatelyleadstogutterperforation.Perforationofthegutterasaconsequenceofinadequatefallorpondinginvalidatesboththemanufacturerandproducerwarranties.Theinstallationanddownpipeconstructionshouldallowtheguttertodraincompletely.

Regularguttercleaningandmaintenanceisrequiredtoremoveleavesandotherdebristhatmayrestrictwaterflowtodownpipes.Particularcareshouldbetakenattheentrancetodownpipesandcorners,toavoidblockagesleadingtowaterponding.

Agutterprotectionsystem(oranyotherproduct)thatentrapswaterbetweenitselfandanysteelproductsurfaces,restrictingthecoatedsteel’sabilitytodry,isnotrecommendedandisanexclusionintheproductwarranty.

WEATHERING OF COLORSTEELWEATHERING OF COLORSTEEL®® PRODUCTS PRODUCTS

Allbuildingproductswillweatherovertime.TheweatheringofCOLORSTEEL®prepaintedsteelproductswillresultinchangestoglossandcolour.Factorswhichinfluencethechangeareenvironmentalpollution,UVlevels,buildingorientationandpaintcolour.


1. Whenaddingtoanexistingbuilding,considerationshouldbegiventotheweathered appearanceoftheCOLORSTEEL®prepaintedsteelproductsintheolderpartofthebuilding.

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NEW ZEALAND STEEL LIMITED PRODUCTS AND THE NEW ZEALAND STEEL LIMITED PRODUCTS AND THE NEW ZEALAND BUILDING CODENEW ZEALAND BUILDING CODE

The New Zealand Building Code defines durability requirements for many elements of buildings. These requirements are outlined in section B2 Durability. In general, most roofing and cladding is required to last a minimum of 15 years (or a nominated period), to water penetration, but in some cases where the material has a structural function, the requirement may be for 50 years. This can be achieved with suitable maintenance.

The New Zealand Building Code calls for durability performance which is relative to both maintenance and to working environments. The following information will assist specifiers to relate these variables to New Zealand Steel Limited products.

CONFORMING WITH THE BUILDING CODECONFORMING WITH THE BUILDING CODE

ZINCALUME® steel and the substrate used to produce COLORSTEEL® prepainted steel products, have met the requirements of AS1397:2001 and are manufactured under a quality management system to monitor ongoing compliance with this Standard. ZINCALUME® steel has been appraised by BRANZ as being suitable as feed stock for the manufacture of roof and wall cladding systems, cladding accessories, spouting, downpipes and other rainwater goods.

EXTERNAL MOISTURE E2/AS1 EXTERNAL MOISTURE E2/AS1

Adequate PitchAdequate Pitch

The New Zealand Building Code provides an Acceptable Solution to the problem of roof pitch. The pitch figures shown in paragraph 8.4.5 of Acceptable Solution E2/AS1 are reproduced, in part, below for your convenience.

Refer specific enquiries to the Profile Manufacturer who may have an Alternative Solution.

Source: New Zealand Building Code: Acceptable Solution E2/AS1

Note: Where manufacturers have more stringent requirements, these should be followed to optimise performance and to avoid invalidating guarantees.

OUTBREAK OF FIREOUTBREAK OF FIRE

ZINCALUME® steel and COLORSTEEL® prepainted steel need not be separated from flues and chimneys. However, when formed into cladding products and associated accessories that are used in conjunction with or attached to heat sensitive materials, the heat sensitive material must be separated from chimneys and flues in accordance with the requirements of NZBC Acceptable Solution C/AS1 Part 9 for the protection of combustible materials.

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ROOF PITCH REQUIREMENTS

Product Minimum Pitch

For profiled metal roof cladding Sheet Length ≤ 18m > 18m

Corrugated (with end laps present) ≥ 10˚ Refer manufacturer

Corrugated (no end laps present) ≥ 8˚ Refer manufacturer

Trapezoidal (where the crest height is less than 27mm) ≥ 4˚ Refer manufacturer

Trapezoidal (where the crest height is 27mm or higher) ≥ 3˚ Refer manufacturer

Trough profile ≥ 3˚ Refer manufacturer

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CONTROL OF EXTERNAL FIRE SPREADCONTROL OF EXTERNAL FIRE SPREAD

ZINCALUME® steel and COLORSTEEL® prepainted steel formed into roof cladding profiles are suitable for use as an external roof cladding in all purpose groups in accordance with NZBC Acceptable Solution C/AS1 Paragraph 7.11.1.

ZINCALUME® steel and COLORSTEEL® prepainted steel formed into wall cladding profiles are suitable for use as an external wall cladding on all buildings in accordance with NZBC Acceptable Solution C/AS1 Paragraph 7.11.2a. This statement is conditional on any applied surface finish being no more than 1mm in thickness.

Specifiers should be familiar with the Acceptable Solution C/AS1 Part 7: Control of External Fire Spread, which covers vertical and horizontal spread of fire.

MAINTENANCEMAINTENANCE

All roofing and cladding products are subject to the cumulative effects of weather, dust and other deposits. Normal rain washing will remove most accumulated atmospheric contaminants from roofs. For wall cladding, manual washing every 3 to 12 months, depending on the paint system, is recommended in moderate to very severe environments to prevent accumulation of dirt, debris or other material not removed by rain washing. For areas that do not receive any or adequate rain washing (called unwashed areas) such as soffits, wall cladding under eaves, underside of gutters, fascias, sheltered areas of garage doors and unwashed roof areas, more extensive manual washing is required. Similarly, other High Risk areas, around flues, under television aerials or overhanging trees and sites prone to mould, lichen, bird droppings or debris, need to have regular manual washing.

Regular washing of COLORSTEEL® prepainted steel products increases the durability by reducing attack from airborne salts and pollutants. GALVSTEEL™ products and ZINCALUME® steel products will also benefit from routine washing.

COLORSTEEL® prepainted steel surfaces should be manually washed with water and a sponge or a soft nylon-bristled brush. For large areas it may be more appropriate to use water blasting at pressures up to 20MPa.

Overpainting of COLORSTEEL® prepainted steel products is discussed on Page 8 of this publication.

If New Zealand Steel Limited products are maintained according to the following recommendations, the requirements of the New Zealand Building Code B2 for 15 year durability for roofs and exterior walls will be met or exceeded.

Note:

1. TheNewZealandBuildingCodedurabilityrequirementdoesnotincludeaestheticappearance.

2. TheNewZealandBuildingCoderequiresadurabilityof15yearsminimum(withmaintenance)forroofing,includingvalleys,andwallcladdingproducts.Thismeansnomoisturepenetration duetoproductfailure.

3. TheNewZealandBuildingCoderequiresadurabilityof5yearsminimum(withmaintenance)forrainwaterproducts,guttersanddownpipes.Thismeansnoperforationduetoproductfailure.

4. NewZealandSteelLimitedproductsaredesignedtoexceedtheNewZealandBuildingCodeB2:durabilityrequirements.Continuedmaintenanceandoverpaintingwillgreatlyextend theultimatelifeofallproducts.

5. Wherea50yeardurabilityisrequiredORwhereaproductistobeusedinaggressiveinternalenvironments,NewZealandSteelLimitedshouldbeconsulted.

6. InIndustrialEnvironments,thetypeofpollutiongeneratedmayaltertheaboverecommendations.Ifindoubt,consultNewZealandSteelLimited.

ThefollowingmaintenanceinformationintheEnvironmentalChartisforguidanceonly.Eachproprietarybuildingproductshouldcarryitsownmanufacturers’recommendationsforusage.

NewZealandSteelLimitedwillnotacceptresponsibilityforproprietaryroofingandcladdingproductswhichdonotconformtoourrecommendationsformanufacturing,environmentaluseormaintenance.

ENVIR ONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONSENVIR ONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONS

Important:Asproductuseisdictatedbylocalconditions,seekadvicefromyourroofingsupplierorfixerforthebestNewZealandSteelLimitedproducttosuityourspecificenvironment.

ThefollowingfourpagespresentaguidetoNewZealand’senvironmentalcategories,theproductsrecommendedforspecificconditionsandresidentialroofingwarranties.

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ENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONSENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONS

SEVERE – ISO CATEGORy 4Characterisedby:• Lightsaltdeposits.

• Afrequentsmellofsaltintheair.

• Typicallystarts100-500metresfrombreakingsurfsuchasisfoundonexposedcoasts.

• Intheimmediatevicinityoflargeexpansesofcalmsaltwatersuchasharbourforeshores.

Thisenvironmentmaybeextendedinlandbyprevailingwindsandlocalconditions.

VERy SEVERE – ISO CATEGORy 550mfromhighwateronEastCoast,100mfromhighwateronWestCoast.

Characterisedby:• Heavysaltdeposits.

• Thealmostconstantsmellofsaltsprayintheair.

• Closetobreakingsurf(typically50-100metres)suchasisfoundonexposedcoasts.

Thisenvironmentmaybeextendedinlandbyprevailingwindsandlocalconditions.

COMMERCIAL WARRANTyCOMMERCIAL WARRANTySuchasschools,warehousesandbuildings,refertoNewZealandSteelLimitedfordetailsofcommercialwarranties.Maximumwarrantyofferedoncommercialbuildingsis15years.

IMPORTANTIMPORTANT•• Asproductuseisdictatedbylocalconditions,seekadvicefromyourroofing

supplierorfixerforthebestNewZealandSteelLimitedproducttosuityourspecificenvironment.

•• Guttersshouldbeinstalledaccordingtomanufacturer’sinstructions.

•• Unwashedandhighriskareas–manualwashingevery3months.

INTRODUCTION INTRODUCTION NewZealandhasawiderangeofenvironmentalconditions,fromtheharshWestCoastbeaches,totherelativeshelteroftheWaikatofarmingregion.Therefore,NewZealandSteelLimitedoffersarangeofsteelproductswhicharesuitableformostlocations.

Roofing

Wall Cladding

Gutters/downpipes

Fascia

Roofing

Wall Cladding

Gutters/downpipes

Fascia

Roofing

Wall Cladding

Gutters/downpipes

Fascia

50 metres0 metres

MODERATE INLAND – ISO CATEGORy 2Characterisedby:• Noobviousmarineorindustrialinfluences.

• Typicallymorethan1000metresfromtheexposedcoastsormorethan500metresfromindustrialemissions.

MODERATE COASTAL – ISO CATEGORy 3Characterisedby:• Littleornosaltdeposits.

• Theoccasionalsmellofsaltintheair.

• Typicallystarts500-1000metresfrombreakingsurfsuchasisfoundonexposedcoasts,ORintheimmediatevicinityofcalmsaltwatersuchasestuaries.

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VERy SEVERE COASTAL SEVERE COASTAL

100 metres 500 metres

18 years:coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.30 years:againstperforationasaresultofcorrosion.15 years:coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade. 10 years: againstperforationasaresultofcorrosion.

10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.

15 years:coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.Not recommended

5 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade. 10 years: againstperforationasaresultofcorrosion.5 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.

Notrecommended

15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.20 years: againstperforationasaresultofcorrosion.15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.10 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.

15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.30 years: againstperforationasaresultofcorrosion.15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.10 years: againstperforationasaresultofcorrosion.

10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.

15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.15 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.10 years: againstperforationasaresultofcorrosion.10 years: coveringthepaintsurfaceagainstflaking,peelingandexcessivefade.15 years: againstperforationasaresultofcorrosion.

Notrecommended

• Rainwashing

• Rainwashingplusmanualwashingeveryyear.

• Manualwashingevery6months.


• Rainwashing

• Rainwashingplusmanualwashingevery3months.

• Manualwashingeverymonth.

• Manualwashingeverymonth.

• Rainwashing

• Rainwashingplusmanualwashingeveryyear.



• Rainwashing




• Rainwashing




WARRANTIES MAINTENANCE WARRANTIES MAINTENANCE

Greaterthan50mfrombreakingsurfontheEastCoast.Greaterthan100mfrombreakingsurfontheWestCoast.

MODERATE COASTAL MODERATE INLAND

15 years: againstperforationasaresultofcorrosion.




Notrecommended

Notrecommended

• Rainwashing




Notrecommended

Notrecommended

WARRANTIES MAINTENANCE

Nowarrantyapplies

Notrecommended

Notrecommended

• Rainwashing

• Rainwashingplusmanualwashingevery6months.Paintingmaybeadvisabledependingonthespecificlocation.

• Manualwashingevery3months.Paintingmaybeadvisabledependingonthespecificlocation.

• Manualwashingevery3months.Paintingmaybeadvisabledependingonthespecificlocation.

Notrecommended

Notrecommended

WARRANTIES MAINTENANCE

1000 metres

P a g e 1 8

SPECIAL ENVIRONMENTSSPECIAL ENVIRONMENTS

InNewZealandthereareareaswherelocalconditionscreateanincreasedlikelihoodofcorrosion.Specialconsiderationshouldbegiventomaterialselectionintheseareas.Theyinclude:

1. Geothermal Areas Hydrogensulphideassociatedwithgeothermalactivitycreatesacorrosiveenvironment.Variationsin

naturalactivityordraw-offfromsteamboresplustheeffectsofweatherconditionsmakethehighriskareashardtodefine.PleaseconsultNewZealandSteelLimitedforfurtherdetails.

2. West Coast, South Island Inthisarea,smokefromthecoalburningfiresmaycausehighconcentrationsofsulphurdioxideinthe

air.ThecombinationofthisandthehighrainfallfortheregioncreatesanaggressivesituationwhichmustbeconsideredwhenchoosingtheappropriateCOLORSTEEL®prepaintedsteelcoating.Theeffectsofaseverecoastalenvironmentaggravatethesituation.

Thisareacombinesthemostseverefeaturesofbothindustrialandcoastalenvironments.PleasecontactyourlocalsupplierforthebestCOLORSTEEL®prepaintedsteelproducttouse.

3. Internal Environments Somecommercialoragriculturalapplicationsmaycreateinternalenvironmentsinwhichthebuild-upof

pollutantsorfumesisapotentialsourceofcorrosion.Similarlyacorrosiveenvironmentcandevelopwithinshedsusedforintensiveanimalfarming.PleaseconsultNewZealandSteelLimitedforfurtherdetails.

4. Industrial Environments Closetocorrosiveindustrialemissionsandsubjecttoheavyfalloutfromthem.Pleaseconsult

NewZealandSteelLimitedforfurtherdetails.

Further AssistanceFurtheradviceontheselectionoftheappropriateproducttosuityourparticularlocationcanbeobtainedfromNewZealandSteelLimitedoryourlocalCOLORSTEEL®prepaintedsteelsupplier.

VERy SEVERE SPECIAL ENVIRONMENTS

P a g e 1 9

COMMERCIAL WARRANTIESCOMMERCIAL WARRANTIES

CommercialwarrantiesareissuedthroughtheRollformerbyNewZealandSteelLimitedandthetermsarespecifictoeachcontract.

Inordertoensuretheappropriateproductisspecifiedfortheintendedservicelifeinanygivenenvironment,NewZealandSteelLimitediskeentobeconsultedasearlyaspossibleinthedesignstagetoensurecorrectmaterialselectionandbackingbyanappropriatewarranty.

WarrantyapplicationsaregenerallymadethroughtheroofingmanufacturerandwarrantyperiodsandconditionsareassessedbyNewZealandSteelLimited.

Factorssuchasroofdesign,roofpitch,profile,coatingtype,internalandexternalenvironmentsandspecialconditions(suchasrequirementfor“CleaninPlace”)areallassessedatthetimeofthewarrantyapplication.Maintenancerequirementswillbespecifiedaspartofthewarranty.

DraftwarrantiesareavailablefromNewZealandSteelLimitedtosupporttendersforspecificprojects.Thetermsandconditionsofthedraftwillremainunchangedprovidingthatthetermsoftheprojectareunaltered.

Awarrantyisissuedonthesatisfactorycompletionofthecontract.InstallationmustbecarriedoutinaccordancewithNewZealandSteelLimited’srequirementsandaccordingtogoodtradepracticesasdetailedinthe“MetalRoofingandWallCladdingCodeofPractice”.

AsiteinspectionbyNewZealandSteelLimitedmaybecarriedoutpriortotheissuingofanywarranty.

Themaintenanceprogrammespecifiedinthewarrantymustbecompliedwithtovalidatethewarranty.P

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INSTALLATION INFORMATIONINSTALLATION INFORMATION

Detailsrelatingtotheinstallationofallproductsareprovidedinthe“InstallersGuide”.ThisbookletcoversNewZealandSteelLimited’srecommendationsforhandling,cutting,fixing,sealing,sitestorage,etc.AdditionalcopiesofthispublicationmaybeobtainedfromNewZealandSteelLimited.

INFORMATION TO HELP yOU AVOID PROBLEMSINFORMATION TO HELP yOU AVOID PROBLEMS

Inalmostallapplications,ZINCALUME®coatedsteelandCOLORSTEEL®prepaintedsteelwillout-performgalvanisedsteel.Therearehowever,asmallnumberofapplicationsforwhichgalvanisedsteelismoresuitable.

ZINCALUME® coated steel and COLORSTEEL® prepainted steel products must not be used for:

• Formworkincontactwithwetconcrete.

• Productstobeembeddedinconcrete.However,whereverysmallvolumesof concreteareinvolved(e.g.splashes)whichareabletocurequickly,thereislittle corrosiveeffect.

• Fertiliserstorageshedsandcontainers.

• Culverts,orwhereZINCALUME®coatedsteelmaterialisburiedintheground.

• Watertanks.

• Highlyalkalineenvironments(e.g.cementmanufacture).

• Coolroomproducts.

• Buildingsforintensiveanimalfarming.

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TECHNICAL FEATURESTECHNICAL FEATURES

CORROSION PROTECTIONCORROSION PROTECTION

Thelongestablishedmethodofprotectingsteelagainstcorrosionhasbeentoapplyacoatingofzinc(galvanising).Thezincsurfaceformsahard,imperviouslayerwhichlimitsfurthercorrosion.Thisprovidesforthelongevityofperformancewhichwehavecometoexpectfromgalvanisedsteelproducts.

Thezinccoatingalsopossessesanotherveryusefulproperty.Smallexposedsurfacesoftheunderlyingsteelsuchasscratchesorcutedgesdonotcorrodebecauseofaneffectknownassacrificialprotection.

ZINCALUME®steel,azinc/aluminiumalloycoating,providesasuperiorperformancetothatofgalvanisedsteel.Itcombinesthebarrierprotectionofaluminiumandthesacrificialprotectionofzinc,thusgivingthebestofbothworlds.

Itfollowsthatbycoatingthesesubstrateswithanaddedpaintsystem,thesteelcorewillbeprotectedforalongerperiod.ItisforthisreasonthattheCOLORSTEEL®prepaintedsteelcoatingsystemsweredeveloped.Eachcoatingisdesignedtoprotectthesubstratefromspecificenvironmentalconditions.

Cross Section of ZINCALUMECross Section of ZINCALUME®® Coated Steel Coated Steel

UV PROTECTIONUV PROTECTION

NewZealandexperiencessomeofthemostextremeUVconditionsintheworld.UVlightcancausebreakdownoftheresinusedinsomepaints.Thisleadstoerosionandchalkingofthepaintfilm.UVlightcanalsocausethebreakdownofpigments(particularlyorganicbasedpigments)resultinginfading.

Inresponsetothisthreat,anon-goingprogrammeofproductimprovementhasledtotheformulationofthecurrentCOLORSTEEL®prepaintedsteelpaintsystems.Thesesystemsutilisepigmentsandresinswhichhavebeenselectedfortheircolourstability,flexibilityanddurability.

ZINCALUME®

Steel Cladding.

PROFILE DESIGN INFORMATIONPROFILE DESIGN INFORMATION

Specificationsrelatingtoroofingandcladdingprofilesandpricingdetailsshouldbesoughtfromthespecialistroofingmanufacturersconcerned.New Zealand Steel Limited does not provide a rollforming service.

ProfiledesignsfromyourlocalsupplierwillspecifythegradeandBMTappropriatetoanycontract.

DefinitionsDefinitions

1. BMT:Basemetalthicknessisthethicknessoftheuncoatedsteelcore.Thefinishedthickness ofthematerialwillincreasebytheaccumulationofcoatingsduringmanufactureby NewZealandSteelLimited.

2. Grade:Themechanicalstrengthofthesteelsubstrateisexpressedinyieldstrengthvalues measuredinMPa.LowstrengthsteelmayberatedasG1,G250orG300.Astheyield strengthofthematerialincreases,sodothevalues,sothatG550hasthehigheststrength.

3. Span:Thedistancebetweenpurlins,asrecommendedbytheRollformerforeachparticularprofile.

HOW TO SPECIFY NEW ZEALAND STEEL LIMITED HOW TO SPECIFY NEW ZEALAND STEEL LIMITED ROOFING AND CLADDING PRODUCTSROOFING AND CLADDING PRODUCTS

• Product(ZINCALUME®,GALVSTEEL™,COLORSTEEL®ENDURA™,COLORSTEEL®MAXX™)

• Profile

• Colour(Whereapplicable)

• BMT(eg:0.40or0.55mm)

• Grade(eg:G300orG550)

FURTHER COATING/SURFACE OPTIONSFURTHER COATING/SURFACE OPTIONS

InadditiontotheproductsmakingupthestandardCOLORSTEEL®prepaintedsteelproductrange,NewZealandSteelLimitedproducenon-standardcoatingsforspecialapplications(eg:highreflectancefinishes).ForspecialisedoptionspleasecontactNewZealandSteelLimited.

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S P E C I F I E R S A N D B U I L D E R S G U I D E

NewZealandSteelLimited,PrivateBag92121,Auckland1142,NewZealand. Ph0-9-3758999 Fax0-9-3758213

BH957795W4347Y O U R L O C A L S U P P L I E RY O U R L O C A L S U P P L I E RY O U R L O C A L S U P P L I E R

NOTE: WithNewZealandSteelLimited’scommitmenttocontinuousimprovement, informationprovidedinthispublicationmaybesubjecttomodification.Atthetimeofpublicationwebelievetheinformationcontainedinthisdocumentisthebestavailable.Nonetheless,wereservetherighttomodifyanyproduct,technique,equipmentorstatementtoreflectimprovementsinthemanufactureandapplicationofcoilcoatedproducts.TheinformationissuppliedwithoutprejudicetoNewZealandSteelLimited’sstandardtermsandconditionsofsale. In theeventofanyconflictbetweenthis informationandthestandard termsandconditions, thestandardtermsandconditionsshallprevail.

ThiseditionoftheNewZealandSteelSpecifiersandBuildersGuidesupersedesallpreviouseditions.

Copyright©2010NewZealandSteelLimited.

FURTHER INFORMATION

Foradditionalinformation,literatureortechnicalassistance,pleasecontact:

COLORSTEEL®andZINCALUME®MarketingNewZealandSteelLimited PrivateBag92121,Auckland1142Telephone:0-9-3758999Facsimile:0-9-3758213FreePhone:0800100523EmailAddress:[email protected]://www.colorsteel.co.nz

GALVSTEEL™isatrademarkofNewZealandSteelLimited.

COLORSTEEL®isaregisteredtrademarkofNewZealandSteelLimited.

MAXX™isatrademarkofNewZealandSteelLimited.

isaregisteredtrademarkofNewZealandSteelLimited.

ENDURA™isatrademarkofNewZealandSteelLimited.ZINCALUME®isaregisteredtrademarkofBlueScopeSteelLimited.

AXXIS®isaregisteredtrademarkofNewZealandSteelLimited.

Documents

S P E C I F I E R S A N D B U I L D E R S G U I D E · 2015. 1. 12. · AS3566 Class 3 and 4 are fully compatible with all products. 5. Fasteners used on COLORSTEEL® prepainted steel