Speci Fiers Builders Guide June 2010

7/30/2019 Speci Fiers Builders Guide June 2010

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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


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Description

Quality Accreditation 1

Design for Durability 1

AnimalShelters 1

Corrosion 2

Run-offfromInertMaterials 3

DrinkingWater 4

EdgeSealingofCOLORSTEELProducts 4

ExpansionAllowanceandTemperature 4

FixingsandFasteners 5

FluesDomestic/Industrial 6

FootTrafficonRoofs 6

FumeExtractorsandVents 7

GeothermalAreas 7

MixingofBrands 8

Overpaintingof

COLORSTEELPrepaintedSteelProducts 8

ProcessingPlants 8

ProfileBendDiameters

Roofing,Wal lCladdingandAccessories 9

SolarHeatingPanelsorRubberMats 9

SwarfStainingofRoof ingandCladding 10

UnwashedAreas 10

WaterPonding 12

WeatheringofCOLORSTEELProducts 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

CONTENTS

DESCRIPTIONDESCRIPTION

NewZealandSteelproducesarangeofcoatedsteelproducts.

COLORSTEELprepaintedsteeldescribesthosesteelbuilding

materialswhichhaveoven-curedpaintappliedtoagalvanised

orZINCALUMEsteelbaseonacontinuouscoiltocoil

operationattheNewZealandSteelGlenbrookworks.

Theprepaintingprocessgivesexcellentadhesionofthecoating

tothesubstrate,allowingrollformingtobeperformedafter

paintingwithoutdelaminationordeteriorationofthepaintfilm.

AvarietyofCOLORSTEELprepaintedsteelcoatingtypesis

offered.AllCOLORSTEELproductsareproducedusingeither

aZINCALUMEsteelsubstratewithanAZ150orAZ200

coatingclass,(i.e.:150g/m2or200g/m2ofzinc/aluminiumalloy),

oragalvanisedsteelsubstratewithaZM275coatingclass

(i.e.275g/m

2

ofzinc).DatasheetsoneachoftheCOLORSTEELprepaintedsteel

coatingtypesmaybeobtainedfromNewZealandSteelLimited

oranystockistsofCOLORSTEELprepaintedsteel.

COLORSTEELMAXXproductshaveaZINCALUMEcoated

steelbase.ThisproductisintendedforVerySevereenvironments.

COLORSTEELENDURAprepaintedsteelhasa

ZINCALUMEcoatedsteelbaseandisavailableinarangeof

colours,selectedfortheirabilitytoprovideoptimum

performance,durabilityandappeal.

ZINCALUMEzinc/aluminiumalloycoatedsteelhasa45%

zinc,55%aluminiumalloycoatingwhichofferssuperior

corrosionresistancecomparedtogalvanisedsteelinmost

environments(particularlycoastalenvironments).

Traditionalgalvanisedsteelisofferedunderthetradenameof

GALVSTEEL.Thismaterialhasa100%zinccoatingandis

availableinarangeofdimensions,grades,zinccoatingweightsandtypes.

AXXISSteelforFramingisabrandofgalvanised,high-tensile

steelsuppliedforsteelframesandtrusses,usedinresidential

andsimilarconstruction.


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DatasheetsoneachoftheCOLORSTEELprepaintedsteelcoatingtypesmaybeobtainedfromNewZealandSteelLimitedoranystockistsofCOLORSTEELprepaintedsteel.

Wherethereisarequirementforaverydurableproductwithhighaestheticappealandlowcostsof

installationandmaintenance,thenCOLORSTEELprepaintedsteelproductsshouldbespecified.

Eachproductisdesignedforapplicationinaspecificenvironment.Theseapplicationsarediscussed

undertheheadingTheNewZealandBuildingCodelaterinthispublication.

QUALITY ACCREDITATIONQUALITY ACCREDITATION

TheNewZealandSteelLimitedPaintLinereceivedaccreditationtoISO9002inApril1992andhassubsequentlybeenupgradedtoISO9001sinceJuly1993.Anon-goingprogrammeofcontinuous

improvementwillensurethatpracticeatNewZealandSteelLimitedcontinuestoreflectthebestavailableinternationaltechnology.

DESIGN FOR DURABILITYDESIGN FOR DURABILITY

Designhasamajorimpactonthedurabilityofthebuilding.Agooddesignwillensurethatyouwillgetthebestpossiblelifefromyourbuildingandreducemaintenancecosts.

The following design elements are presented alphabetically with guides to provide

improved durability.

ANIMAL SHELTERSANIMAL SHELTERS

Someagriculturalapplicationsmaycreateinternalenvironmentsinwhichthebuild-upofpollutants

orfumesisapotentialsourceofcorrosion.Acorrosiveammoniaenvironmentcandevelopwithinshedsusedforintensiveanimalfarming.

ZINCALUME,COLORSTEELENDURAorCOLORSTEELMAXXshouldnotbeusedforthisapplication.

Design Guide:Design Guide:

1. ContactNewZealandSteelLimitedforspecialistadvice.

2. ZINCALUMESTEELORCOLORSTEELSHOULDNOTBEUSEDINTHISENVIRONMENT

DUETOEXTREMECORROSIONRISK.

PAGE

ONE


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CORROSIONCORROSION

Dissimilar Metals CorrosionDissimilar Metals Corrosion

Whentwodifferentmetalsareincontactandmoistureispresent,onemetalisrelativelyprotected

whiletheothersuffersacceleratedcorrosion.Thisisknownasgalvanicorbi-metalliccorrosion.

Asimilareffectcommonlyoccurswithwaterflowingoverdissimilarmetals.

Thisformofcorrosioniscommonlyfound:

1. Wherewaterisdischargedfromcopperorbrasssystemsoveragalvanised,orCOLORSTEEL

prepaintedsteelorZINCALUMEcoatedsteelroof.

2. WhereunpaintedleadflashingsareapplieddirectlytoZINCALUMEcoatedsteelproducts.

(ReferInformationBulletinNo.2FlashingMaterials).

3. Wherefastenersareincompatiblewiththeroofingmaterial.(SeeFixingsandFasteners,page5).


1. SeparatedissimilarmetalsbyusingabarriersuchasPVCtape,neutralcuresiliconesealant

oranappropriatepaintsystem.

2. Preventpotentialrun-offfromcopperorbrasspipesoverGALVSTEEL,ZINCALUMEcoated

steelorCOLORSTEELprepaintedsteelsurfacesbydivertingthedischargeclearoftheroofing.

CopperpipesmustbeisolatedfromAXXISSteelforFraming.

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

Thischartlistscommonlyusedmetals

inaGalvanicSeries.Ifanyofthese

metalsareindampcontactora

runoffsituation,themetalhigheron

thetablewillsacrificeitselftoprotect

themetalloweronthescale.

Thereforethesimpleruleisto

rememberthatyoucanrunwater

downbutnotuphill.Forexample,zinctocopperisalrightbutcoppertozinc

isnot.

ZINC

ZINCALUME

ALUMINIUM

STEEL

LEAD

COPPER

STAINLESS STEEL


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RUN-OFF FROM INERT MATERIALSRUN-OFF FROM INERT MATERIALS

Thezinccoatingongalvanisedsteelproductsdevelopsaprotectivesurfacefilmasaresultofnaturalweathering.ThisprovidesthelongevityofperformancewhichwehavecometoexpectfromGALVSTEELproducts.

Whenflowingovergalvanisedroofing,rainwaterdissolvessmallamountsofmineralsandsaltsfrom

thezincsurface.Thesemineralsandsaltspromoteandmaintaintheprotectivefilmandenhancethecorrosionresistanceofdownstreamgalvanisedsteelproducts(eg:lean-toroofs,guttersandvalleys).

Howeverwhenrainwaterflowsover,oriscollectedfromroofingmaterialswhichdonotpromotethisprotectivefilm(INERTMATERIALS),acceleratedcorrosionofunpaintedgalvanisedsteelroofsand

gutterscanoccur.

SomeExamplesofInertMaterials:

ZINCALUMEsteelGlassFibreglassCOLORSTEELprepaintedsteelGlazedTilesPVC

AcrylicAluminium


1. Ongalvanisedroofing,runskylightsdowntothegutter.

2. ToachievemaximumlifefromyourrainwatergoodswerecommendthattheyaremanufacturedfromeitherZINCALUMEsteelorCOLORSTEELprepaintedsteelproducts.

3. Unpaintedgalvanisedsteelmustnotbeusedforroofingorrainwatergoods,includingvalleysandgutters,tocollectwaterrun-offfromZINCALUMEcoatedsteelproductsoranyotherinertmaterial.

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THREE


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DRINkING WATERDRINkING WATER

RainwatercollectedfromroofscladwithproductsmadefromGALVSTEEL,ZINCALUMEcoatedsteelandCOLORSTEELprepaintedsteel,willcomplywiththeprovisionsofNZBCG12.3.1,

providedthewaterisnotcontaminatedfromothersources.

Thefirst25mmofrainfallfromanewlyinstalledroofmustbediscardedbeforedrinkingwater

collectionstarts.

Whereapaintorpaintsystemisappliedtotheroof,itssuitabilityforthecollectionofdrinkingwater

mustbeestablished.

EDGE SEALING OF COLORSTEELEDGE SEALING OF COLORSTEEL PRODUCTSPRODUCTS

EdgesealingofCOLORSTEELproductsisnotrecommended.(SeeEnvironmentalCategoriesand

ProductRecommendationssection).

EXPANSION ALLOWANCE AND TEMPERATUREEXPANSION ALLOWANCE AND TEMPERATURE

Allroofingandcladdingissubjecttoexpansionandcontractionduetotemperatureextremes.This

isparticularlyevidentwithdarkercoloursandlongspanswheretheexpansionmaybeasmuchas8.0mmfora10.0metresheet.Fixingsystemsmustallowforexpansionandaccommodatethelongitudinalmovementwhichresults.


Typical Roof Temperatures Summer Average - Calm Conditions

INSULATED UNINSULATED

LightColours(egTitania)* 58C 48C

MediumColours(egMistGreen) 79C 67C

DarkColours(egKaraka) 92C 77C

*Light Colours include

unpainted galvanised

and ZINCALUME

steel material.

Typical Roof Expansions

Basedon0.01mm/m/C

8 METRE RUN 12METRERUN 18 METRE RUN

LightColours* 5mm 7mm 11mm

MediumColours 6mm 10mm 14mm

DarkColours 7mm 11mm 17mm


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PAGE

FIVE

FIXINGS AND FASTENERSFIXINGS AND FASTENERS

Theselectionoftheappropriateformoffastenerisataskwhichshouldnotbesolelyinfluencedbycost.Fastenercostsareminimalrelativetotheoverallprojectandthereisnobenefittobegained

throughtheuseofinferiorfixings.Thefastenerdurabilityshouldequalorexceedthatoftheroofingorcladdingproduct.

TheMetalRoofingandWallCladdingCodeofPracticeprovidessomeinformationonselection,fixingmethodsandplacementoffasteners.ThishandbookisavailableonrequestfrommembersoftheNewZealandMetalRoofingManufacturersIncorporatedorNewZealandSteelLimited.More

detailedinformationcanalsobeobtainedfromfastenermanufacturers.


1. FastenerperformanceshouldconformwiththerequirementsofAS3566(andAmendments)

ScrewsSelfDrillingfortheBuildingandConstructionIndustries.

2. Stainlesssteelandstainlesssteelcappedfastenersarenotrecommendedforusewith

ZINCALUMEcoatedsteelorCOLORSTEELprepaintedsteelproductsinallenvironmentsduetoincompatibility.

3. Lowcarbon,nonconductingsealingwashersarerequiredforusewithCOLORSTEELprepaintedsteelproductsandZINCALUMEcoatedsteelproducts.

Theadviceofspecialistfastenermanufacturersisreadilyavailableandthesemanufacturers shouldbeconsulted,particularlywhereCOLORSTEELprepaintedsteelproductsaretobe fixedinVerySevereorSevereEnvironments.(seeEnvironmentalCategoriesandProduct Recommendations,page15).

4. Fastenerswithheavyzincorzinc-tincoatingsorzincalloycoatedheadscomplyingwithAS3566Class3and4arefullycompatiblewithallproducts.

5. FastenersusedonCOLORSTEELprepaintedsteelproductsshouldbefactorycoatedto provideanaccuratecolourmatchwithCOLORSTEELprepaintedfinishes.

6. Rivets:Rivets:

UsealuminiumrivetsforjoiningallNewZealandSteelLimitedroofingproducts. (Ensurerivetisofasuitablestrengthforthepurpose.Refertoyourrivetsupplier).

Monelrivetsarenotrecommendedastheyareincompatibleduetotheircoppercontent.

NR:NewZealandSteelproductnotrecommendedforexteriorapplicationsfortheseEnvironmentalCategories.

4: Heavyzincorzinc-tincoatingsorzincalloycoatedheadscomplyingwithAS3566.22002Class4.

3: Heavyzincorzinc-tincoatingscomplyingwithAS3566.22002Class3.

*Seepage16fordefinitionsofEnvironmentalCategories.

Note:

1. StainlesssteelfastenersarenotrecommendedforusewithZINCALUMEcoatedsteelor

COLORSTEELprepaintedsteelproductsinallenvironments.2. Sealingwashersthatcontaincarbonblackfillerlevelsofmorethan15%byvolumemay

leadtocorrosionofZINCALUMEsteelandCOLORSTEELprepaintedsteelproducts.Therefore,allfastenersforNewZealandSteelroofingproductsshouldhavelowcarbon,

non-conductingsealingwashers.

3. RefertoInformationBulletin10.

Fastener Recommendations

Environmental ISO GALVSTEEL ZINCALUME COLORSTEEL COLORSTEELCategory* ENDURA MAXX

Coastal:VerySevere C5 NR NR NR 4

Severe C4 NR NR 4 4

Moderate C3 3,4 3,4 3,4 3,4

Industrial:

VerySevere C5 NR NR NR 4

Severe C4 NR NR 4 4

Moderate 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,sulphuricacidformswhichwillleadto

prematurecorrosionoftheroof,gutteringanddownpipes.

Design Guide:Design Guide:1. Designtheheightofthefluetoallowcombustionby-productstobedissipated.

2. SpecifyaCOLORSTEELprepaintedsteelproductdesignedforverysevereenvironments.

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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PAGE

SEVEN

FUME EXTRACTORS AND VENTSFUME EXTRACTORS AND VENTS

Corrosivedustandparticlescanbereleasedthroughroofventsanddischargedontotheroofsurface.Theimmediateareaoftheroofadjacenttotheventisthenatincreasedriskofcorrosion.


1. Installfilterelementstocontainhazardousmaterial.

2. SpecifyaCOLORSTEELprepaintedsteelproductdesignedforverysevereenvironmentsto beinstalledadjacenttothevent.

3. Considerapplyingasuitableprotectivecoatingtotheaffectedareaoftheroof.

4. Maintaincoaloroilfiredboilersorincineratorssothattheydonotdischargehighsulphur levelsovertheroofsurface.

5. Regularlywashtherooftoremovecontaminants.

GEOTHERMAL AREASGEOTHERMAL AREAS

Inareasofgeothermalactivity,hydrogensulphidesassociatedwithboreemissionscancausecorrosionproblems.Althoughheavierthanair,hydrogensulphidecanbedrawnintorainwaterdown-

pipesandaccumulateingutters.Thiscanleadtocorrosionoftheguttersandtheroofoverhangs.


1. Installawatertrapatthebaseofdown-pipes.

2. SpecifytheappropriateCOLORSTEELprepaintedsteelproduct.



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MIXING OF BRANDSMIXING OF BRANDS

Wheredifferentbrandsofprepaintedmaterialareusedonthesamebuilding,differencesincolour,glossandweatheringperformancemayappearobviouswithinashortperiodoftime.Thiswillbe

duetothedifferentpaintformulationsusedbydifferentmanufacturers.

NewZealandSteelLimitedwillnotacceptliabilityforproblemscausedbythemixingofbrands.


1. SpecifyeitherCOLORSTEELENDURAorCOLORSTEELMAXXproducts.

OVERPAINTING OF COLORSTEELOVERPAINTING OF COLORSTEEL PREPAINTED STEEL PRODUCTSPREPAINTED STEEL PRODUCTS

COLORSTEELprepaintedsteelproductsaredesignedfordurability.However,allpaintcoatingswilldeteriorateovertime.Therefore,atsomestage,itwillbenecessarytorepainttoavoidseriousdeteriorationoftheproduct.

Themainconsiderationisthepaintcoatingintegritytoperformasuitablebondfortheoverpaintedsystemsothatthedurabilityofthenewcoatingsystemismaintained.

NewZealandSteelsexperiencewouldindicatethatthisperiodtofirstrepaintisaround15years.

However,localclimaticconditions,buildingdesignandpaintcolourcanhaveasignificantinfluenceontheperformanceofthepaintsystem.ThereforeyoumayneedtoconsultNewZealandSteelorourpaintsuppliers,PPGIndustriesNZLtd,tohelpassessthemostsuitabletimetorepaint.

COLORSTEELprepaintedsteelproductsmaybereadilyoverpainted,aftersuitablepreparation,foraestheticreasons.DetailedinformationisavailableintheNewZealandSteelLimitedInformation

Brochure:OverpaintingNewandWeatheredSteelRoofing.

PROCESSING PLANTSPROCESSING PLANTS(IncludingSwimmingPools)

Somecommercialapplicationsmaycreateinternalenvironmentsinwhichthebuild-upofpollutantsorfumesareapotentialsourceofcorrosion.Plantswherechlorinevapoursarereleased(includingenclosedswimmingpools)shouldhaveadequateventilationtominimisetherisks.


1. Wherepollutantsorhumiditylevelsarelikelytobehigh,allowforfrequentairchanges.

2. Passiveventilationmaybeinadequatetocopewiththeproblemandtheinstallationoffan systemsshouldbeconsideredandincorporatedatthedesignstage.



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PAGE

NINE

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

NewZealandSteelLimitedproductsarecustomdesignedtoensuremaximumcompatibilitywiththeroll-formingprocess.Thepaintsystemsaredesignedtobedurableandadheretothemetal

substratesothattheyarenotaffectedbygoodroll-formingpractices.However,tighttensionbendsinthefinishedproductshouldbeavoidedassmallcracksmaybeformedwhichexposethemetal

substratetotheatmosphere.

For optimum corrosion performance no visible microcracing should be present in the

finished product. Therearemanyfactors,substrate,paint,benddiameterandformingpractice,

thataffectthetendencytomicrocrack.Therefore,itisnotpracticaltohaveafixedbenddiameterthatguaranteesnomicrocracking.

Mostproducts,formedinwelldesignedandoperatedequipment,willnothavemicrocracksattensionbends.Itisimportantthatvisualchecksformicrocrackingbemadeonthefinishedproducttoensureahighqualitystandardismaintained.

Productswithmicrocrackingonthetensionbendswillshowearliersignsofcorrosionwhenusedin

unwashedareasinsevereenvironments.


1. Theuseofcorrugatedprofilesinsevereandspecialconditions(e.g.Geothermal)willhelpto

ensuregreaterdurability.

SOLAR HEATING PANELS OR RUBBER MATSSOLAR HEATING PANELS OR RUBBER MATS

Duringtheinstallationofsolarheatingsystems,careshouldbetakentopreventanydamageto

theroofingmaterial.Becauseofthehightemperaturescreatedandtheincreasedcondensationwhichmayresult,careshouldbetakentomaintainanairspacebetweentheroofandtheheatingunit.Followmanufacturersrecommendationsconcerningtubedirectionandtheuseoffixingsupport

brackets.

FailuretodothismayinvalidateaCOLORSTEELprepaintedsteelproductwarranty.


1. Neverplaceheatingelementsorplumbingunitsdirectlyontheroofsurface.Followthesystemsuppliersrecommendationsconcerninginstallation.


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SWARF STAINING OF ROOFING AND CLADDINGSWARF STAINING OF ROOFING AND CLADDING

Swarfisthetermgiventosteeldebrisarisingfromcuttingorpiercingoperationswhenusingfrictionsaws,abrasivediscs,drillsetc.,onsteelroofingandcladdingproducts.Whilstcomprisingmostly

finesteelparticlesmixedwithabrasive,inthiscontextswarfmayalsobetakentoincludeanyotherdiscardedsteelobjectssuchasrivetshanks,nails,screwsandnuts,whichmaycomeintocontact

withcoatedproducts;ie:COLORSTEELprepaintedsteel,ZINCALUMEzinc/aluminiumalloy-coatedsteelandgalvanisedsteel.

Swarfparticles,ifleftonthesurface,willcorrodeandcauseruststainswhichwilldetractfrom

thefinishedappearanceofaproject.Thesestainsareoftenmistakenforearlydeteriorationoftheroofingandcladdingitself.


1. Neverleaveswarfmaterialonthecoatedsurface.Followtherecommendationsincludedin theNewZealandSteelLimitedInstallersGuideorInformationBulletin7.

UNWASHED AREASUNWASHED AREAS

Whencontaminantssuchaswindblownsaltanddustaccumulateonpaintedsurfacesandbecomedamp,corrosionwilltakeplace.Manywindblowncontaminantsabsorbmoisturewhenexposedto

highhumidityandtheirpresenceonsteelacceleratescorrosion.

Forthisreason,areasonabuildingwhichareseldomwashedbyrainareparticularlypronetoearly

breakdownofthematerial.

Thiseffectmayfirstbenoticedasawhitecorrosionproduct,typicallyseenontheundersideofgutters,canopies,roofventsoronshelteredareasandtheundersideofprofilesusedhorizontallyaswallcladding.Itwillbemorenoticeablewheretighterradiusbendshavebeenusedinrollforming.

Evenoncoatedsteelwherecorrosionreactionsaremuchslower,thepresenceofcontaminantsoverlongperiodsoftimewillincreasetherateofcorrosion.

Themaintenanceregimesforunwashedareas,necessarytomeetthedurabilityrequirementsoftheBuildingCode,areshownonpages17and18ofthispublication.

WhentheundersideofZINCALUMEsteelandCOLORSTEELprepaintedsteelproductsis

exposedinanunwashedarea,e.g.:canopies,verandas,eaves,leantobuildingsetc.,additionalmaintenance,abovethatspecifiedonpages17and18,isrequiredtoensuresatisfactory

performanceoftheproduct.


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1. Everyeffortmustbemadeduringthedesignofthebuildingtoeliminateorminimisesheltered

oroverhangingareas.

2. ConsiderationshouldbegivenduringthedesignstagetoensuretheundersideofZINCALUME

steelandCOLORSTEELprepaintedsteelisenclosedandthereforenotexposedtothe

environment.

3. Whereunwashedareascannotbedesignedout,specifyregularwashingoftheseareasas partofanongoingmaintenanceprogramme.Refertopages17and18forNewZealandSteel

Limitedrecommendations.

4. Designconsiderationforeasyaccessmustbegiventoareasthatrequireregularmaintenance.

5. EnsureprofilebendsarenottighterthanthoserecommendedundertheheadingofProfile

BendDiametersRoofing,WallCladdingandAccessories,andthattherearenomicrocracksinthefinishedproduct.

PAGE

ELEVEN


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WATER PONDINGWATER PONDING

RoofsRoofs

Wheretheroofpitchislow,changesinroofloadingsmayresultinanegativepitchandconsequentlyleadtowaterponding.WaterpondingisdetrimentaltotheperformanceofCOLORSTEELprepaintedsteelproducts.Thefollowingconditionscommonlycausewaterponding:

Over-spacedpurlins.

Deformationoftimberpurlins.

Placementofexternalloadssuchasairconditioningunits.

Rigidfixingonlongspanswhichcausesdeformationoftheprofileasaresultof thermalexpansion.


1. Neveruseapitchoflessthan3degreesortheminimumrecommendedfortheprofile,whicheverisgreater.Pitchesoflessthanthisinvalidatethewarranty.

2. Designtheroofaccordingto theprofilemanufacturersspecifications.

3. Onminimumpitchroofs,ensurethatthegutterendofprofiledsheetsisturneddown.

4. Allowforthermalexpansiontopreventprofiledistortion.5. Considertheuseofwalkwaystopreventdamagewheretheroofmaybesubjecttoheavy

foottraffic.

6. Ensureroofpenetrationsdonotblocktheflowofwaterfromtheroof.

Note:PleaserefertoNewZealandSteelLimitedProductsandtheNewZealandBuildingCodeonpage13ofthispublicationunderE2/AS1ExternalMoisture

GuttersGutters

Guttersmustbeinstalledwithadequatefalltoensureallwateristransportedtoappropriately

locateddownpipes.Pondingoccurswhenwaterremainsinthegutterwhenthefallisinadequate.Overtime,thiscausesdegradationtothecoatingandultimatelyleadstogutterperforation.Perforationofthegutterasaconsequenceofinadequatefallorpondinginvalidatesboththe

manufacturerandproducerwarranties.Theinstallationanddownpipeconstructionshouldallowtheguttertodraincompletely.

Regularguttercleaningandmaintenanceisrequiredtoremoveleavesandotherdebristhatmay

restrictwaterflowtodownpipes.Particularcareshouldbetakenattheentrancetodownpipesandcorners,toavoidblockagesleadingtowaterponding.

Agutterprotectionsystem(oranyotherproduct)thatentrapswaterbetweenitselfandanysteel

productsurfaces,restrictingthecoatedsteelsabilitytodry,isnotrecommendedandisanexclusionintheproductwarranty.

WEATHERING OF COLORSTEELWEATHERING OF COLORSTEEL PRODUCTSPRODUCTS

Allbuildingproductswillweatherovertime.TheweatheringofCOLORSTEELprepaintedsteel

productswillresultinchangestoglossandcolour.Factorswhichinfluencethechangeareenvironmentalpollution,UVlevels,buildingorientationandpaintcolour.


1. Whenaddingtoanexistingbuilding,considerationshouldbegiventotheweathered appearanceoftheCOLORSTEELprepaintedsteelproductsintheolderpartofthebuilding.


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NEW ZEALAND STEEL LIMITED PRODUCTS AND THENEW 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 somecases where the material has a structural function, the requirement may be for 50 years. This canbe achieved with suitable maintenance.

The New Zealand Building Code calls for durability performance which is relative to bothmaintenance and to working environments. The following information will assist specifiers to relatethese 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 appraisedby 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/AS1EXTERNAL 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 optimiseperformance 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 inconjunction with or attached to heat sensitive materials, the heat sensitive material must be separatedfrom chimneys and flues in accordance with the requirements of NZBC Acceptable Solution C/AS1

Part 9 for the protection of combustible materials.

PA

G

E

TH

IR

TE

E

N

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

ZINCALUMEsteel and COLORSTEELprepainted 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.

ZINCALUMEsteel and COLORSTEELprepainted 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.


17/24

Note:

1. TheNewZealandBuildingCodedurabilityrequirementdoes notincludeaestheticappearance.

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

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

4. NewZealandSteelLimitedproductsaredesignedtoexceedtheNewZealandBuildingCode

B2:durabilityrequirements.Continuedmaintenanceandoverpaintingwillgreatlyextend theultimatelifeofallproducts.

5. Wherea50yeardurabilityisrequiredORwhereaproductistobeusedinaggressiveinternalenvironments,NewZealandSteelLimitedshouldbeconsulted.

6. InIndustrialEnvironments,thetypeofpollutiongeneratedmayaltertheaboverecommendations.Ifindoubt,consultNewZealandSteelLimited.

ThefollowingmaintenanceinformationintheEnvironmentalChartisforguidanceonly.Eachproprietarybuildingproductshouldcarryitsownmanufacturersrecommendationsforusage.

NewZealandSteelLimitedwillnotacceptresponsibilityforproprietaryroofingandcladding

productswhichdonotconformtoourrecommendationsformanufacturing,environmentaluseormaintenance.

ENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONSENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONS

Important:Asproductuseisdictatedbylocalconditions,seekadvicefromyourroofingsupplieror

fixerforthebestNewZealandSteelLimitedproducttosuityourspecificenvironment.

ThefollowingfourpagespresentaguidetoNewZealandsenvironmentalcategories,theproducts

recommendedforspecificconditionsandresidentialroofingwarranties.

PAGE

FIFTEEN


18/24

ENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONSENVIRONMENTAL CATEGORIES AND PRODUCT RECOMMENDATIONS

SEVERE ISO CATEGOR 4

Characterisedby: Lightsaltdeposits.

Afrequentsmellofsaltintheair.

Typicallystarts100-500metresfrombreakingsurfsuchasisfoundonexposedcoasts.

Intheimmediatevicinityoflargeexpansesofcalmsaltwatersuchasharbourforeshores.

Thisenvironmentmaybeextendedinlandbyprevailingwindsandlocalconditions.

VER SEVERE ISO CATEGOR 5

50mfromhighwateronEastCoast,100mfromhighwateronWestCoast.

Characterisedby: Heavysaltdeposits.

Thealmostconstantsmellofsaltsprayintheair.

Closetobreakingsurf(typically50-100metres)suchasisfoundonexposedcoasts.

Thisenvironmentmaybeextendedinlandbyprevailingwindsandlocalconditions.

COMMERCIAL WARRANTCOMMERCIAL WARRANT

Suchasschools,warehousesandbuildings,refertoNewZealandSteelLimitedfordetailsofcommercialwarranties.Maximumwarrantyofferedoncommercialbuildingsis15years.

IMPORTANTIMPORTANT

Asproductuseisdictatedbylocalconditions,seekadvicefromyourroofing

supplierorfixerforthebestNewZealandSteelLimitedproducttosuityourspecificenvironment.

Guttersshouldbeinstalledaccordingtomanufacturersinstructions.

Unwashedandhighriskareasmanualwashingevery3months.

INTRODUCTIONINTRODUCTION

NewZealandhasawiderangeofenvironmentalconditions,fromtheharshWestCoastbeaches,totherelativeshelteroftheWaikatofarmingregion.Therefore,NewZealandSteelLimitedoffersarangeofsteelproductswhicharesuitableformostlocations.

Roofing

Wall Cladding

Gutters/downpipes

Fascia

Roofing

Wall Cladding

Gutters/downpipes

Fascia

Roofing

Wall Cladding

Gutters/downpipes

Fascia

50metres0metres

MODERATE INLAND ISO CATEGOR 2

Characterisedby: Noobviousmarineorindustrialinfluences.

Typicallymorethan1000metresfromtheexposedcoastsormorethan500metresfromindustrialemissions.

MODERATE COASTAL ISO CATEGOR 3

Characterisedby: Littleornosaltdeposits.

Theoccasionalsmellofsaltintheair.

Typicallystarts500-1000metresfrombreakingsurfsuchasisfoundonexposedcoasts,ORintheimmediatevicinityofcalmsaltwatersuchasestuaries.

P a g e 1 6


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VER SEVERE COASTAL SEVERE COASTAL

100metres 500metres

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

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



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



Notrecommended

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




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




15 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

1000metres

Pa g e 1 8


20/24

SPECIAL ENVIRONMENTSSPECIAL ENVIRONMENTS

InNewZealandthereareareaswherelocalconditionscreateanincreasedlikelihoodofcorrosion.Specialconsiderationshouldbegiventomaterialselectionintheseareas.Theyinclude:

1. Geothermal Areas Hydrogensulphideassociatedwithgeothermalactivitycreatesacorrosiveenvironment.Variationsin

naturalactivityordraw-offfromsteamboresplustheeffectsofweatherconditionsmakethehighriskareashardtodefine.PleaseconsultNewZealandSteelLimitedforfurtherdetails.

2. West Coast, South Island

Inthisarea,smokefromthecoalburningfiresmaycausehighconcentrationsofsulphurdioxideintheair.ThecombinationofthisandthehighrainfallfortheregioncreatesanaggressivesituationwhichmustbeconsideredwhenchoosingtheappropriateCOLORSTEELprepaintedsteelcoating.Theeffectsofaseverecoastalenvironmentaggravatethesituation.

Thisareacombinesthemostseverefeaturesofbothindustrialandcoastalenvironments.PleasecontactyourlocalsupplierforthebestCOLORSTEELprepaintedsteelproducttouse.

3. Internal Environments Somecommercialoragriculturalapplicationsmaycreateinternalenvironmentsinwhichthebuild-upof

pollutantsorfumesisapotentialsourceofcorrosion.Similarlyacorrosiveenvironmentcandevelopwithinshedsusedforintensiveanimalfarming.PleaseconsultNewZealandSteelLimitedforfurtherdetails.

4. Industrial Environments Closetocorrosiveindustrialemissionsandsubjecttoheavyfalloutfromthem.Pleaseconsult

NewZealandSteelLimitedforfurtherdetails.

Further Assistance

FurtheradviceontheselectionoftheappropriateproducttosuityourparticularlocationcanbeobtainedfromNewZealandSteelLimitedoryourlocalCOLORSTEELprepaintedsteelsupplier.

VER SEVERE SPECIAL ENVIRONMENTS

P a g e 1 9

COMMERCIAL WARRANTIESCOMMERCIAL WARRANTIES

CommercialwarrantiesareissuedthroughtheRollformerbyNewZealandSteelLimitedandthetermsarespecifictoeachcontract.

Inordertoensuretheappropriateproductisspecifiedfortheintendedservicelifeinanygivenenvironment,NewZealandSteelLimitediskeentobeconsultedasearlyaspossibleinthedesignstagetoensurecorrectmaterialselectionandbackingbyanappropriatewarranty.

WarrantyapplicationsaregenerallymadethroughtheroofingmanufacturerandwarrantyperiodsandconditionsareassessedbyNewZealandSteelLimited.

Factorssuchasroofdesign,roofpitch,profile,coatingtype,internalandexternalenvironmentsandspecialconditions(suchasrequirementforCleaninPlace)areallassessedatthetimeofthewarrantyapplication.Maintenancerequirementswillbespecifiedaspartofthewarranty.

DraftwarrantiesareavailablefromNewZealandSteelLimitedtosupporttendersforspecificprojects.Thetermsandconditionsofthedraftwillremainunchangedprovidingthatthetermsoftheprojectareunaltered.

Awarrantyisissuedonthesatisfactorycompletionofthecontract.InstallationmustbecarriedoutinaccordancewithNewZealandSteelLimitedsrequirementsandaccordingtogoodtradepracticesasdetailedintheMetalRoofingandWallCladdingCodeofPractice.

AsiteinspectionbyNewZealandSteelLimitedmaybecarriedoutpriortotheissuingofanywarranty.

Themaintenanceprogrammespecifiedinthewarrantymustbecompliedwithtovalidatethewarranty.

PAGE

TW

ENTY


21/24

PAGE

TW

ENTYONE

INSTALLATION INFORMATIONINSTALLATION INFORMATION

DetailsrelatingtotheinstallationofallproductsareprovidedintheInstallersGuide.ThisbookletcoversNewZealandSteelLimitedsrecommendationsforhandling,cutting,fixing,sealing,sitestorage,etc.AdditionalcopiesofthispublicationmaybeobtainedfromNewZealandSteelLimited.

INFORMATION TO HELP OU AVOID PROBLEMSINFORMATION TO HELP OU AVOID PROBLEMS

Inalmostallapplications,ZINCALUMEcoatedsteelandCOLORSTEELprepaintedsteelwillout-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,orwhereZINCALUMEcoatedsteelmaterialisburiedintheground.

Watertanks.

Highlyalkalineenvironments(e.g.cementmanufacture).

Coolroomproducts.

Buildingsforintensiveanimalfarming.


22/24

TW

ENTYTWO

TECHNICAL FEATURESTECHNICAL FEATURES

CORROSION PROTECTIONCORROSION PROTECTION

Thelongestablishedmethodofprotectingsteelagainstcorrosionhasbeentoapplyacoatingof

zinc(galvanising).Thezincsurfaceformsahard,imperviouslayerwhichlimitsfurthercorrosion.Thisprovidesforthelongevityofperformancewhichwehavecometoexpectfromgalvanisedsteelproducts.

Thezinccoatingalsopossessesanotherveryusefulproperty.Smallexposedsurfacesoftheunderlyingsteelsuchasscratchesorcutedgesdonotcorrodebecauseofaneffectknownas

sacrificialprotection.

ZINCALUMEsteel,azinc/aluminiumalloycoating,providesasuperiorperformancetothatof

galvanisedsteel.Itcombinesthebarrierprotectionofaluminiumandthesacrificialprotectionofzinc,thusgivingthebestofbothworlds.

Itfollowsthatbycoatingthesesubstrateswithanaddedpaintsystem,thesteelcorewillbeprotectedforalongerperiod.ItisforthisreasonthattheCOLORSTEELprepaintedsteelcoating

systemsweredeveloped.Eachcoatingisdesignedtoprotectthesubstratefromspecificenvironmentalconditions.

Cross Section of ZINCALUMECross Section of ZINCALUME Coated SteelCoated Steel

UV PROTECTIONUV PROTECTION

NewZealandexperiencessomeofthemostextremeUVconditionsintheworld.UVlightcancausebreakdownoftheresinusedinsomepaints.Thisleadstoerosionandchalkingofthepaint

film.UVlightcanalsocausethebreakdownofpigments(particularlyorganicbasedpigments)resultinginfading.

Inresponsetothisthreat,anon-goingprogrammeofproductimprovementhasledtotheformulationofthecurrentCOLORSTEELprepaintedsteelpaintsystems.Thesesystemsutilisepigmentsandresinswhichhavebeenselectedfortheircolourstability,flexibilityanddurability.


23/24

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 LIMITEDHOW TO SPECIFY NEW ZEALAND STEEL LIMITEDROOFING AND CLADDING PRODUCTSROOFING AND CLADDING PRODUCTS

Product(ZINCALUME,GALVSTEEL,COLORSTEELENDURA,COLORSTEELMAXX)

Profi le

Colour(Whereapplicable)

BMT(eg:0.40or0.55mm)

Grade(eg:G300orG550)

FURTHER COATING/SURFACE OPTIONSFURTHER COATING/SURFACE OPTIONS

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

PAGE

TW

ENTYTHREE


24/24

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

NOTE: WithNewZealandSteelLimitedscommitmenttocontinuousimprovement,informationprovidedinthispublicationmaybesubjecttomodification.Atthetimeofpublicationwebelievetheinformationcontainedinthisdocumentisthebestavailable.Nonetheless,wereservetherighttomodifyanyproduct,technique,equipmentorstatementtoreflectimprovementsinthemanufactureandapplicationofcoilcoatedproducts.TheinformationissuppliedwithoutprejudicetoNewZealandSteelLimitedsstandardtermsandconditionsofsale.Intheeventofanyconflictbetweenthisinformationandthestandardtermsandconditions,thestandardtermsandconditionsshallprevail.

ThiseditionoftheNewZealandSteelSpecifiersandBuildersGuidesupersedesallpreviouseditions.

Copyright2010NewZealandSteelLimited.

FURTHER INFORMATION

Foradditionalinformation,literatureortechnicalassistance,pleasecontact:

COLORSTEELandZINCALUMEMarketingNewZealandSteelLimited PrivateBag92121,Auckland1142

Telephone:0-9-3758999

Facsimile:0-9-3758213FreePhone:0800100523

EmailAddress:[email protected]://www.colorsteel.co.nz

GALVSTEELisatrademarkofNewZealandSteelLimited.

COLORSTEELisaregisteredtrademarkofNewZealandSteelLimited.

MAXXisatrademarkofNewZealandSteelLimited.

isaregisteredtrademarkofNewZealandSteelLimited.

ENDURAisatrademarkofNewZealandSteelLimited.ZINCALUMEisaregisteredtrademark

ofBlueScopeSteelLimited.

AXXISisaregisteredtrademarkofNewZealandSteelLimited.

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