Colorcoat Prisma Technical · steel, Tata Steel products and services are widely used in the...

Colorcoat Prisma® technical detailsThe ultimate combination of durability and aesthetic appeal

CI/SIB (4-) Nh2April 2013

INTroduCTIoN

The choice of pre-finished steelproduct is fundamental to thevisual appearance and both thefunctional and environmentalperformance of the buildingenvelope. Colorcoat Prisma® is atechnically and aestheticallysuperior pre-finished steel thatrepresents the ultimatecombination of durability andaesthetic appeal. As such, itprovides the designer with thefreedom to create architecturallystriking buildings with exceptionalperformance, that meet thedesired functionality of thebuilding.

Contents

Introduction 2

Colorcoat® pre-finished steel 3

Development of Colorcoat Prisma® 4

Aesthetics that last 5

Development of the colour range 6

Colour reassurance 8

Double sided 9

Unrivalled corrosion protection 10

Steel substrate 12

Product performance 14

Abrasion resistance 15

Corrosion resistance 16

UV resistance 18

Confidex® Guarantee 20

Fire performance 22

Water harvesting 24

REACH 25

Renewable energy applications 26

Sustainability 28

Examples of sustainable activities 30

Colorcoat® services 31

Colorcoat Prisma® Introduction

2 Copyright Tata Steel 2013 www.colorcoat-online.com

ColorCoAT®

pre-fINIShed STeelExpertiseTata Steel has been developing andmanufacturing the Colorcoat® range of pre-finished steel for nearly five decades. Overthe years, our developments have been at theforefront of new advances in pre-finished steelresulting in longer lasting products andunprecedented colour ranges.

We continue to apply our knowledge andunderstanding to ensure that Colorcoat®remains a market-leading brand. We activelyengage with architects and other specialists tobuild on our experience and detailedknowledge of the construction market and tolead the way in developing new products.Sustainability is a key driver for theConstruction industry with an increasingdemand to build with this in mind. Tata Steelhave an in depth knowledge of theenvironmental impacts of not only Colorcoat®products but also the various roof andcladding systems that they are part of. Thisunderstanding means that we are able tosupport you in designing sustainable buildingenvelope solutions.

At Tata Steel we are committed to makingproducts that meet the needs of the marketand to making them in the most responsibleway. Our commitment to sustainability alsomeans we actively manage our impacts andcontribution throughout the full life of ourproducts - with our suppliers, within our ownoperations, through the supply chains weserve and by taking responsibility for recyclingsteel. Colorcoat Prisma® has achieved BES6001 responsible sourcing certificate whichreinforces our commitment to sustainability.

QualityWith a world-class reputation in steel, Tata Steel products and services are widely used in the construction market. Utilising steel produced by Tata Steel in the UK, Colorcoat Prisma® is manufactured to exacting standards at Shotton in North Wales.

Our products are subject to carefullymonitored processes and comprehensive,independent testing to ensure compliancewith the highest and most demandingEuropean standards. The superior and provenlong-term performance of our pre-finishedsteel products means we are able toguarantee Colorcoat Prisma® for up to 30 yearsfor industrial and commercial buildings.Colorcoat Prisma® is also supported by acomprehensive range of services, technicaladvice and guidance.

Colorcoat Prisma® Pre-finished steel

Colorcoat Connection® helpline +44 (0) 1244 892434 Copyright Tata Steel 2013 3

developmeNT of ColorCoAT prISmA®

Colorcoat Prisma® is the result of over 10years of development and testing, andalmost 50 years experience in developingand manufacturing the Colorcoat® range ofpre-finished steel.

Colorcoat Prisma®attributes and benefits:

• Contemporary colours including solids,metallics and matt shades providing anoptically smooth finish for modern designs.

• All colours surpass requirements of RUV4and RC5 certification as per EN 10169:2010proving outstanding colour retention andcorrosion resistance.

• Optimised Galvalloy® metallic coating forultimate corrosion resistance and cut edgeprotection.

• Confidex® Guarantee for up to 30 years withno maintenance or inspections required tomaintain its validity in Zone 1 and Zone 2areas.

• BBA Certification in excess of 40 years for allcolours, providing independent verification.

• Available with Confidex Sustain® in the UKand Ireland to offer the world’s firstCarbonNeutral® building envelope.

• Ideal when used in integrated renewableenergy generation systems. ColorcoatPrisma® is proven to provide superior solar-thermal absorption capability and excellentdurability when used as a collector foractive solar air heating solutions such asColorcoat Renew SC® by Tata Steel.

• Double sided capability for buildings withdemanding internal environments,rainscreens and rainwater goods wheredouble sided protection is required.

• Comes with reverse side branding makingtraceability easy, so you can rest assuredthat your building is protected with thehighest quality from Tata Steel.

• Common sizes are available on shortproduction lead times for Europe.

• Approved by the Water Regulatory AdvisoryScheme (WRAS) for cold water use and assuch can be used as part of a rainwatercollection system with no detriment to thewater quality.

• Excellent fire performance properties, and issuitable for internal linings and externalsurfaces of wall and roof coverings.

Colorcoat Prisma® Development


Colorcoat Prisma® combines a versatilepalette of contemporary and traditionalcolours with durability and inherentflexibility. This results in modern and durableroofs and walls with a finish that will look asgood as the day it was installed for years tocome.

Robust paint technologyColorcoat Prisma® comes in a range of solid,metallic and natural matt shades that aredesigned to withstand the rigors of theexternal environment.

Colorcoat Prisma® is a 50 micron high buildrobust paint system which incorporatespolyamide beads, and provides a greater levelof durability when compared with typicalPVDF and polyester paint systems.

By incorporating the latest polymertechnology, Colorcoat Prisma® is able toachieve the optimum combination of physicalproperties and weathering resistance.

Colorcoat Prisma® is made up of a number oflayers which perform different functions. TheGalvalloy® metallic coating and high buildprimer provide the corrosion resistance, andthe topcoat utilises the latest polymertechnology to provide abrasion and UVresistance.

Key

Top coat with polyamidebeads

Corrosion resistant primer

pre-treatment

Galvalloy®

Base substrate

Galvalloy®

pre-treatment

high performance backingcoat

Figure 1. Colorcoat Prisma® layers illustration

AeSTheTICS ThAT lAST

Colorcoat Prisma® Aesthetics


Following consultation with architects andcolour specialists, the standard ColorcoatPrisma® range includes 12 solid colours, 12metallic colours and 3 matt colours. Therange offers an excellent choice of colour toensure the demands of contemporary andarchitecturally challenging projects can bemet whether it be a bold statement or asubtle design.

MetallicsThe majority of metallic flakes used within thepaint formulation are made from Aluminiumand are specially coated to ensure maximumacid resistance, enabling the metallic effect tolast longer.

When incorporated into Colorcoat Prisma®these flakes provide a silver effect and adegree of sparkle or, in combination withconventional colouring pigments, can providea coloured metallic effect. The extent to whichthe pigments reflect light is dependent on thepigment type, size, content and orientation.

Two common pigment types aremanufactured and utilised in ColorcoatPrisma®: ‘Cornflake’ – flat flakes with irregularshapes and ‘Silver Dollar’ – flat discs withuniform shape and size that enables a brightermetallic effect to be achieved.

In order to create the special metallic colours,Colorcoat Prisma® incorporates a greater ratioof ‘Silver Dollar’ pigments, providing a greaterdegree of ‘sparkle’ than the conventional solidmetallic colours.

developmeNT of The Colour rANGe

Colorcoat Prisma® Colour range


Figure 3. ‘Silver Dollar’ flat discs with uniformshape and size

Figure 2. ‘Cornflake’ flakes with irregular shapes

Solid coloursThe solid colour range includes 12 colours toreflect the increasing use of Colorcoat Prisma®as a product for roof cladding, particularly forindividual residential dwellings popular inEastern Europe. These are also ideal forindustrial and commercial roofs and wallsrequiring superior aesthetics.

Matt coloursThe range also includes three matt colours.These colours are available with typical glosslevels of 5%. The matt colours have beenchosen to replicate more traditional buildingmaterials such as terracotta, slate tiles andweathered copper. This makes them ideal for avariety of applications from church roofs tocontemporary rainscreens.

To view the full standard colour range or to order samples visit www.colorcoat-online.com/samples or call the Colorcoat Connection® helpline on+44 (0)1244 892434 to order a colour card.


Colorcoat Prisma® Colour range

When sourcing material for your buildingenvelope, consideration should be given tocolour availability, consistency and matchingcomponents.

Colour availabilityA range of the most popular colours areavailable on short production lead times, andall colours are available from our Colorcoat®Accredited Distributors in standard sizes.

To check the quickest colour availability foryour project contact us on the ColorcoatConnection® helpline on +44 (0) 1244 892434.

Repertoire®As an additional service, whether you wantyour building to stand out, or blend with thesurroundings, we can create a unique identityfor your building.

Through our Repertoire® Colour Consultancyservice, available in Zone 1 and Zone 2 areasin Europe, we can match almost any solidcolour for roof or wall cladding. We require aminimum order quantity of 2500 m2, and canwork from either physical swatches orreference standards.

Metal hand samplesMetal hand samples are available for allcolours. For a true representation of colourand effect, please obtain metal hand samplesfrom the Colorcoat Connection® helpline oronline at www.colorcoat-online.com/samples

Colour consistencyIf tonal consistency is critical, all cladding for asingle elevation should come from the sameproduction batch. All metallic shades exhibit adegree of directionality.

Matching componentsIf accessories made from other materials are tobe colour-matched to the roof or wallcladding, the best reference is the actualprofiles or panels delivered to site, or materialfrom the same batch.

Colour reASSurANCe

Colorcoat Prisma® Colour and consistency


douBle SIded

Colorcoat Prisma® Double sided product

Colorcoat Prisma® is available double sided,meaning the same Colorcoat Prisma®topcoat and corrosion resistant primer areapplied to the reverse side of the product.This new option provides the ideal solutionfor demanding applications where anincreased level of protection is required onboth sides of the steel substrate.

Any colour from the standard colour card canbe specified as the topcoat colour, with RAL9010 White or RAL 9002 Hamlet available asthe standard colour for the reverse coat. Boththe topcoat and the reverse coat are anominal total thickness of 50 microns.

Other standard solid colours, RAL 9006 SilverMetallic or RAL 9007 Grey Aluminium may beavailable for the reverse coat colour.

Please contact the Colorcoat Connection®helpline for details on minimum orderquantities and for further information.

Rainwater goodsDouble sided pre-finished steel is usedextensively in Europe for rainwater goods suchas gutters, down pipes and associatedaccessories. The availability of double sidedColorcoat Prisma® now allows these rainwatergoods to be manufactured from the sameproduct as your building envelope so allowingcolour matching to your roof and/or wallcladding. Available with a 15 year anti-perforation warranty dependant upon exactproject requirements.

Rainscreen applicationsDouble sided Colorcoat Prisma® is ideallysuited for rainscreen applications where inaddition to the external face and cut edges,increased protection is provided at the reverseside to deal with the micro climate betweenthe rainscreen and the building wall. Thereverse colour for this specific application isRAL 9002 Hamlet at a nominal thickness of 35microns.

Available with a bespoke guarantee providingcover for up to 25 years.


Colorcoat Prisma® uses our uniqueGalvalloy® metallic coating, a special mix ofZinc and Aluminium that provides unrivalledcorrosion protection, even at cut edges.

How does Galvalloy® work?The metallic coating is essential to theperformance of the pre-finished steel.Traditionally, pre-finished steel products haveused a Zinc metallic coating which is oftenreferred to as Hot-Dipped Galvanised Steel(HDG). This HDG coating does provideimproved corrosion protection, in comparisonwith uncoated steel, but often leaves cutedges vulnerable to increased rates ofcorrosion and will ultimately lead to peelingand/or premature paint delamination.

To address this problem, Colorcoat Prisma®uses the unique and proven Galvalloy®metallic coating. Galvalloy® is made with aspecial mix of 95% Zinc (Zn) and 5%Aluminium (Al) that conforms to EN 10346:2009.

The carefully developed proportions of Zincand Aluminium (Zn-Al) in Galvalloy® offer acombination of increased barrier and sacrificialprotection when compared with conventionalHDG coatings.

The sacrificial protection results frompreferential corrosion of the Zinc over thesteel, and the barrier protection results fromthe presence of a stable Aluminium oxidelayer on the surface of the Galvalloy® coating,both of which inhibit and slow the rate ofanodic undercutting compared toconventional HDG metallic coatings.

The Aluminium in the metallic coating ofGalvalloy® and the manufacturing parametersare optimised to give a very fine two-phasemicrostructure compared with the uniformmicrostructure of HDG.

A typical microstructure of Galvalloy® is shownin figure 4 where the primary Zinc dendritesmake up approximately 20% of the bulkmicrostructure and the Zinc/Aluminiumeutectic the remaining 80%.

uNrIvAlledGAlvAlloy® CorroSIoNproTeCTIoN

Colorcoat Prisma® Galvalloy®

Figure 4. Typical Galvalloy® microstructure

Primary Zinc Zn-Al eutecticdendrites


For a product using conventional HDG, thecorrosive attack will dissolve all of the metalliccoating at the same rate – leading to obviouspeeling of the paint system as the paint hasnothing to adhere to.

For the same time period, the optimisedGalvalloy® microstructure has a majoradvantage in that the corrosion will occur intwo stages.

Initially, the Zinc phase will be corrodedpreferentially to the Zinc/Aluminium eutectic.As the paint adheres to the eutectic structure,no edge peel is observed.

Over time, the eutectic structure will corrode –but at a greatly reduced rate when comparedwith HDG coatings and thus results in longerdurability.

In addition to exhaustive artificial testing,Galvalloy® has been subjected to prolongedand independent natural weather testingsince its introduction in 1998. Its proven,superior performance means that Galvalloy®lasts for a longer time period than HDG andremains the preferred metallic coating forColorcoat Prisma®.

The micro cross-section of Galvalloy®illustrates the before, figure 5, and after, figure6, corrosion process. It clearly shows the Zincdendrites corroding at a faster rate than theZinc and Aluminium eutectic composition. Theprotective Zinc and Aluminium phase is leftbehind and remains adhered to the organiccoating providing improved corrosionprotection.

Colorcoat Prisma® Galvalloy®

Figure 5. Galvalloy® microstructure before corrosion

Figures 5 and 6 illustrate how, as the lighter colouredZinc dendrites ultimately corrode, the uniquemicrostructure of the Galvalloy® layer ensures thatthe surface coating remains adhered to the eutecticsurface.

Figure 6. Galvalloy® microstructure after corrosion


With a world class reputation in steel, TataSteel products and services are widely usedin the construction market. The steelsubstrate for Colorcoat Prisma® ismanufactured by Tata Steel.

Strong, versatile and truly recyclable, steel isa compelling choice for the buildingenvelope.

Steel has one of the highest strength-to-weight ratios of any building material –producing strong, lightweight structuresenabling fast build programs that are costeffective without any compromise on quality.

Images courtesy of Metall Profil

Steel provides:• Functionality, versatility,

strength and flexibility.

• Ability to work well with other materials.

• Excellent environmental performance –offering high recyclability and re-usepotential.

• Ability to be pre-fabricated off-site andconstructed quickly and accurately on-site.

• Excellent durability and performance in use.

Designing with steelThe gauge of the steel plays a vital role in thephysical properties and performance of theroof or wall cladding that is manufacturedfrom it. Incorrect specification may, in theworst cases, have safety implications such asroof fragility.

The European standard EN 10143:2006 definesthe tolerances for different grade, width andgauge material for normal and specialtolerance categories. In the case of ColorcoatPrisma®, the gauge is measured as the steelsubstrate plus the Galvalloy® metallic coating.

Tata Steel supplies pre-finished steel to normaland special tolerances according to EN 10143:2006 to ensure that the claddingperforms as designed.

Incorrectly specifying gauge or gauge tolerances can affect:1. Structural performance, including

in service load capacity and purlin spacingsas well as safety implications duringconstruction and maintenance.

2. Building visual appearance, lighter gaugematerial is more prone to damage duringinstallation, and distortion of the profilearound fasteners due to slight misalignmentof the primary/secondary structure.

STeel SuBSTrATe

Colorcoat Prisma® Steel substrate


EasyProfile substrateSome architectural profiles are difficult to formfrom standard structural steel gradesproduced according to EN 10346:2009. To helpwith this Colorcoat Prisma® is also availablewith EasyProfile substrate. This is a softer andmore malleable substrate with controlledmechanical properties that allows the client toproduce more demanding building envelopeprofiles without the risk of profiling defectssuch as springback.

When metallic substrates are painted andcured at peak metal temperatures (PMT) ofbetween 216°C to 250°C, bake hardeningoccurs which results in the yield strength ofthe painted material being > 60 N/mm2 abovethe yield strength of the unpainted material.

The microstructure of steel has a significanteffect on the strength and performance of thesteel. It is controlled in two ways: chemicalcomposition and the processing route whichincludes the size, shape and distribution of thegrains.

The EasyProfile substrate allows moreconsistent mechanical properties than thestandard substrate and utilises a cleaner steelchemistry together with modified heattreatment cycles through the galvanising line.This enables difficult profiles to be produced,from Colorcoat Prisma®, without springback.

Reverse side brandingColorcoat Prisma® is produced with a TataSteel identity on the reverse side, printedevery metre, that includes the Colorcoat®product name, date and time of manufacture.

This provides reassurance to the client that theproduct specified is an authentic Tata Steelproduct, and can also be used to ensure youare using material from the same batch wheretonal consistency is critical. It can also be usedto confirm the directionality when usingmetallic colours.

Colorcoat Prisma® Steel substrate


Figure 7. Standard substrate showing ‘springback’ Figure 8. EasyProfile substrate with no ‘springback’ Figure 9. Reverse side branding

The combination of its unique Galvalloy®metallic coating and high-build paint systemprovides Colorcoat Prisma® with the ultimatecombination of corrosion resistance andaesthetic appeal. It has been independentlyassessed and exposed to an extensivetesting regime to assess its performance.

The durability of a paint system is importantas it shows its ability to withstand attack fromdifferent sources such as sunlight, water,oxygen and salts. As such buildings in coastallocations are subject to more demandingconditions than urban or rural sites as they areexposed to all these elements as well asabrasives such as wind-blown sand.

Sunlight is the most destructive of theseelements and will eventually lead to a loss ofgloss, fading, chalking, brittleness andeventually loss of coating adhesion. Thelength of time this takes depends on the paintsystem.

The atmosphere around a building alsocontains chemicals and pollutants that shouldbe taken into account, the amount of whichvaries with location.

These chemicals and pollutants acceleratecorrosion by attacking the chemical bondsand the metallic pigments that make up thepaint polymers. Colorcoat Prisma® has beenrigorously tested against all these elementsand the results are shown on the followingpages.

produCTperformANCe

Colorcoat Prisma® Performance

Table 1. Typical properties

Colorcoat Prisma® Test standard

Nominal organiccoating thickness (µm)* 50 EN 13523-1

Specular gloss (60°):Non-matt colours (%) 30-40 EN 13523-2Matt colours (%) <5 EN 13523-2

Scratch resistance:Non-matt colours (g) >3500 EN 13523-12Matt colours (g) >3000 EN 13523-12

Abrasion resistance(Taber, 250 rev, 1 kg):

Non-matt colours (mg) <20 EN 13523-16Matt colours (mg) <25 EN 13523-16

Flexibility: Minimumbend radius (T) 0.5T@16°C EN 13523-7Reverse impact (J) ≥18 EN 13523-5Adhesion(cross hatch) (%) 100 EN 13523-6Pencil hardness H EN 13523-4

Maximum cont.operating temp. (°C) 90

Corrosion resistance: Salt spray (h) 1000 EN 13523-8Humidity (h) 1000 EN 13523-26

Corrosion resistancecategory RC5 EN 10169:2010

UV resistancecategory RUV4 EN 10169:2010

*µm = micron

Notes1. The figures contained in this table are typical properties

and do not constitute a specification. Tested in accordancewith eN 13523. for details on test methods visitwww.colorcoat-online.com

2. for health and safety datasheets contact the ColorcoatConnection® helpline on +44 (0) 1244 892434.


To ensure the integrity of Colorcoat Prisma®,we use independent laboratory testing tomeasure its performance against corrosion,effect of sunlight, chemical attack andabrasion. All testing of products is carriedout in UKAS accredited laboratories toInternational Standards.

The durability of Colorcoat Prisma® is derivedfrom its Galvalloy® metallic coating, its highperformance primer and its topcoat whichcontains polyamide beads.

These layers also provide excellent scratch andabrasion resistance for easier handling andprocessing.

Scratch testsThe scratch test method is a technique thatapplies critical loads to a sample to test atwhat point failure appears, testing thecohesive and/or adhesive properties of pre-finished steel. During the test, samples ofColorcoat Prisma® were scratched with aneedle which was drawn at a constant speedunder a progressive load.

The test was concluded when sufficientweight was added to cut through theColorcoat Prisma® sample revealing itsmetallic coating. The more weight recorded,the greater the resistance of the topcoat.Colorcoat Prisma® was tested alongside atypical PVDF, and an alternative equivalentproduct.

The results shown in figure 10 illustrate thatconsiderably less weight was required toexpose the metallic coating underneath boththe alternative equivalent and the PVDFcoating. As a result of the polyamide beads in

the topcoat, Colorcoat Prisma® performedextremely well during the test demonstratingits excellent scratch and abrasion resistance.

Falling sand testAbrasion resistance is commonly tested by the‘falling sand’ test to ASTM D968:2001. This testmeasures the stream of falling sand requiredto wear through an organic coating system inorder to determine its resistance. The test isconcluded once the metallic coating isexposed and the quantity of sand is recordedin litres.

Colorcoat Prisma® was tested against a typicalPVDF coating. The results of the test areshown in figure 11 below.

As shown, considerably more sand wasrequired to expose the substrate on theColorcoat Prisma® sample – demonstrating itsexcellent abrasion resistant properties.

ABrASIoN reSISTANCe


Figure 10.Scratch resistance of pre-finished steels (EN 13523-12)

Weight(g)

4500

4000

3500

3000

2500

2000

Colorcoat prisma® pvdf Alternative equivalent

Figure 11.Abrasion resistance comparison (ASTM D968:2001)

Sand(litres)

350

300

250

200

150

100

50

0

Colorcoat prisma® pvdf


Natural weatheringNatural weathering testing is an essentialpart of testing the corrosion resistance of apre-finished steel product. Colorcoat Prisma®has undergone a comprehensive programmeof testing in key weathering climates aroundthe world. Exposure sites were chosen inorder to provide the full spectrum ofweathering zones from equatorial andtropical climates to urban, rural, industrialand coastal locations.

Colorcoat Prisma® was tested at; Florida,Arizona, Australia, Singapore, Bohus Malmon,Brest and at sites in the UK to assess corrosionresistance. This has enabled us to build up acomprehensive assessment of theperformance of Colorcoat Prisma® in a widerange of extreme climates.

Colorcoat Prisma® has undergone extensivecorrosion testing in accordance with theEuropean Standard EN 10169:2010;‘Continuously organic coated (coil coated) steelflat products’.

Figure 13. RC5 Certificate for Colorcoat Prisma®

Samples of Colorcoat Prisma® were exposed tothe extreme coastal environment at Brest onthe West Coast of France in order to assesscorrosion resistance.

The European Standard requires the samplesto have more than 2 years exposure at the siteduring which time they must be able to resistblistering, coating damage and exhibit anedge peel <2 mm in order to achieve RC5corrosion rating, the highest corrosionresistance classification.

After independent assessment, The FrenchCorrosion Institute concluded that all colours inthe Colorcoat Prisma® range achieve RC5corrosion rating in accordance with EN10169:2010. An example of one of theColorcoat Prisma® test panels is shown in figure12. This shows virtually no edge peel, and nosurface damage or blisters after 2 yearsexposure.

Accelerated corrosion testsSamples of a representative selection of thecolour range were put through a series ofrigorous tests designed to predict thecorrosion resistance of Colorcoat Prisma® indifferent environments - coastal (salt spray),humidity, prohesion (cyclic wet and dry), andKesternich (acid rain). The tests are symbolicand are far more aggressive than would beseen in real world situations.

Figure 12. A Colorcoat Prisma® test panel aftermore than 2 years exposure

Figure 14. Tata Steel weathering site, BohusMalmon (coastal)

CorroSIoNreSISTANCe



Samples of Colorcoat Prisma® with one edgeexposed, and a cross scribed into the coatingto simulate site damage were placed in UKASaccredited test chambers for the required testduration. The results of these acceleratedcorrosion tests are given in table 2, where thetypical extent of any delamination from boththe cut edge and scribe, together with theextent of any blistering or paint surfacedegradation is recorded.

Representative photographs of ColorcoatPrisma® in matt Terracotta after 1000 hourstesting in this suite of accelerated tests areshown in figures 15 to 18.

Both saltspray (continuous fog of sodiumchloride) and prohesion (cyclic phases ofsodium and ammonium chloride fog followedby a drying cycle) are extremely aggressiveaccelerated corrosion tests yet the extent ofpaint delamination at both the cut edge andscribe is minimal.

Following 1000 hours, in the humidity andwater soak tests, no blistering or significantpaint delamination is observed indicatingexcellent paint adhesion between theGalvalloy® metallic coating and organic layersof Colorcoat Prisma®.

As can be seen from the typical results and infigures 15 to 18, the performance of ColorcoatPrisma® in the suite of accelerated corrosiontests is excellent and demonstrates how wellthe Galvalloy® metallic coating in combinationwith the Colorcoat Prisma® paint systemprotects the steel.

loNG-TermWeATherING



Table 2. Accelerated corrosion tests

Corrosion Test Test Maximum Maximum Test paneltest duration standard average edge average scribe surface

delamination delamination(mm) (mm)

No otherSaltspray 1000 hours EN 13523-8 < 4 mm < 4 mm panel

degradation

No otherProhesion 1000 hours ASTM G85-02 < 4 mm < 4 mm panel

degradation

No otherWater soak 1000 hours EN 13523-9 0 mm 0 mm panel

degradation

No otherHumidity 1000 hours EN 13523-25 0 mm 0 mm panel

degradation

No otherKesternich 20 cycles ISO 3231-98 < 3 mm < 3 mm panel

degradation

Note: The figures in this table are typical properties and do not constitute a specification.

Figure 18. Test panel after water soak 1000 hrs

Figure 16. Test panel after prohesion 1000 hrs

Figure 17. Test panel after humidity 1000 hrs

Figure 15. Test panel after saltspray 1000 hrs

A pre-finished steel must resist thedamaging affects of Ultra-Violet (UV)degradation where a deterioration in boththe colour and gloss retention are precursorsof paint degradation. Consequently theability of a paint to maintain both colour andgloss are seen as indicators of the longevityof a paint system.

UV resistance testingTo meet the requirements of RUV4 samples areexposed to artificial QUVA radiation for 2000total hours, or exposure for 2 years at anaccredited weathering site with a cumulativeUV radiation in excess of 4500 MJ/m2 per year.

EN 10169:2010 stipulates for RUV4 thepercentage gloss retention (GR) must begreater than 80% after each test, and theextent of colour change must be < 2 ΔE forartificial UV testing and < 3 ΔE followingnatural weathering exposure. In both tests,Colorcoat Prisma® easily meets theserequirements in terms of the stipulated colourand gloss retention.

Figure 19. Tata Steel weathering site, Arizona(desert)

The superior UV resistance of ColorcoatPrisma® has been independently verified byATLAS following exposure at their Floridaweathering facilities.

Samples of Colorcoat Prisma® have completedover 6000 total hours in the QUVA test andboth gloss retention and colour changeassessed. Even after this extended testing

period, Colorcoat Prisma® solid, metallic andmatt samples have a colour change of lessthan 1 ΔE as can be seen in figures 20 and 21.

Following the tests, the complete colour rangeof Colorcoat Prisma® has been classed as RUV4,providing reassurance to the client that itsspecification will result in a building retainingits true colour for longer.

ruv4 requirements

ruv4 requirements

uv reSISTANCe



Figure 21. ∆E for Colorcoat Prisma® in QUVA

Δe

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1000 2000 3000 4000 5000 6000Total hours in QUVA

Key

All colours Standard colours Solid colours metallic colours matt colours

Figure 20. % Gloss Retention for Colorcoat Prisma® in QUVA

%Gr

120

100

80

60

40

20

0

1000 2000 3000 4000 5000 6000Total hours in QUVA

ruv4 requirements

ruv4 requirements

EN 10169:2010 defines the testmethodology and classification for UVresistance, products can be classified fromRUV1 to RUV4 – RUV4 being the most extreme.

Samples of Colorcoat Prisma® Silver Metallic(RAL 9006) and Orion have been exposed atthe Atlas weathering site in Florida for 5 years.As can be seen from Figures 23 and 24, afterthis 5 years exposure the ΔE is less than 1,which is typically not noticeable with thehuman eye, and the % gloss retention isapproximately 80. These exposuresdemonstrate the excellent colour stability ofColorcoat Prisma® in long term demanding UVenvironments.

The photographs in Figures 25 and 26 showthe actual samples after the 5 years exposureagainst the unexposed Colorcoat Prisma®again indicating the excellent colour stability.

Figure 22. RUV4 Certificate

Figure 25. Colorcoat Prisma® Silver Metallic (RAL 9006) after 5 years exposure.

Figure 26. Colorcoat Prisma® Orion after 5 years exposure.



Figure 24. Colorcoat Prisma® 5 years exposure in Florida

Δe2.01.81.61.41.21.00.80.60.40.2

0

1 2 3 4 5Total years in QUVA

Key

Colorcoat prisma® rAl 9006 Colorcoat prisma® orion

Exposed

Unexposed

Figure 23. Colorcoat Prisma® 5 years exposure in Florida

%Gr120

100

80

60

40

20

0

1 2 3 4 5Total years in QUVA

Exposed

Unexposed


Peace of mindAny building project is a complex job withmany different components, materials andcontractors involved to make it all happen.And once the build has finished you needpeace of mind that if anything does gowrong with your pre-finished steel you canget things fixed. This is why we havedeveloped our Confidex® Guarantee forColorcoat Prisma®.

Confidex® is the product performanceguarantee for the weatherside of ColorcoatPrisma®, when used in an externalconventional building envelope applicationnamely roof and wall cladding using singleskin, built-up or composite panel constructionin industrial and commercial buildings.

Confidex® offers the longest and mostcomprehensive guarantee for pre-finishedsteel available in Europe. Extended andcomprehensive testing involving both naturaland artificial exposure has given us the abilityto guarantee Colorcoat Prisma® for up to 30years.

The Confidex® Guarantee is project specificand upon registration online - provides acontractual relationship between Tata Steeland the building owner meaning that in thecase of a claim the contact with Tata Steel isdirect rather than having to go through thesupply chain, saving time and money.

With no mandatory inspections ormaintenance, we remove the need to go on tothe roof to maintain the validity of theguarantee – Confidex® is the only pre-finishedsteel guarantee on the market that offers this.

What’s more, the Confidex® Guarantee istransferable, so should the building ownerchange it is simply a case of filling in the formon the back of the guarantee certificate andposting back to Tata Steel.

Who registers?Usually the building owner, claddingcontractor or the cladding systemmanufacturer, but anyone in the supply chaincan apply online at: www.colorcoat-online.com/registration

If you want to check your building has beenregistered, contact the Colorcoat Connection®helpline on +44 (0) 1244 892434.

Application specific warranties are alsoavailable for non-standard claddingapplications; i.e. individual residential roofs,rainscreens, rainwater goods and when usedwith PV modules. Please contact the ColorcoatConnection® helpline for guaranteesassociated with such applications.

Northern Europe – Zone 1 Southern Europe – Zone 2

For areas outside of Confidex® zones please contact TataSteel for more information.

20years 20

years 15years

25years

25years 20

years 20years 15

years

Roofs

Walls

Inland

Coastal

25years 25

years 20years

30years

30years 25years 25years 20years

Roofs

Walls

years

years

Inland

Coastal

yearsyears

CoastalC

Solid & Metallic Colours Matt Colours

CoNfIdex®

GuArANTee

Colorcoat Prisma® Guarantees

Notes1. Figures under the Coastal heading are for buildings within

1 km of any coast.2. Full terms and conditions of the Confidex® Guarantee are

on the online application form, available atwww.colorcoat-online.com/registration

3. Confidex® must be registered within 3 months of thebuilding completion date for the guarantee to be valid.

4. The Confidex® Guarantee periods on the diagram aboveare applicable to Zone 1 and Zone 2. For more informationvisit www.colorcoat online.com/confidexmap

Figure 27. Diagram of Confidex® Guarantee periodsfor Zone 1 and 2.

Zone 1

Zone 2

Colorcoat Prisma® Guarantees


Table 3. Comparison of guarantees

Area

Headline guarantee and cut edges

Rectification costs

Inspection and maintenance free

Non standard colours

Guarantee transfer

In the event of a coating failure

Roof pitches

Processing of pre-finished steel

Application process

Coastal environments

Confidex® Guarantee

Headline guarantee statement of up to 30 years

including cut edges.

Full remedial action so all rectification costs covered.

No annual inspections or maintenance are required for

the duration of the guarantee to maintain its validity.

Solid colours specified through Repertoire® are covered

by the Confidex® Guarantee.

Can easily be transferred should building ownership

change.

Building owner contacts Tata Steel directly to address

claim.

Covers roof pitches down to 1°.

Tata Steel requires the product to have been used within

18 months of manufacture, and the Confidex® Guarantee

registered within 3 months of building completion.

Simple, short online form.

0-1km.

Other guarantees

Cut edges may only be covered for 10 years.

Some limit the claim to the invoice value of the Steel,

which may offer the full value at the beginning but can

reduce over the duration of the guarantee.

Some claim to be maintenance free but require regular

inspection logs to be kept.

Do not generally provide any guarantee for non standard

colours.

Some suggest transferring ownership is possible but at

the discretion of the supplier i.e. the transfer is not

assured.

Some require the building owner to contact the supply

chain with the cladding manufacturer ultimately making

contact with the steel supplier to pursue claim.

Higher roof pitches drain more easily so not all

guarantees cover pitches below 6°.

Some guarantees require the product to have been used

within 4 weeks of manufacture.

Lengthy paper based questionnaire to complete.

0-3km.

The British Board of Agrément Certificate

Don’t just take our word for it, ColorcoatPrisma® has been assessed by the BritishBoard of Agrément (BBA) which is the UK’smajor authority offering approval ofconstruction products, systems andinstallers.

The BBA awards Agrément Certificates to aproduct only after it has successfully passed

a comprehensive assessment involvinglaboratory testing, on-site evaluations andinspections of production.

Colorcoat Prisma® has been awardedAgrément Certificate 91/2717 by the BBA forindustrial, commercial, retail and leisure useand for residential and non-residentialdwellings.

The BBA states: “Colorcoat Prisma® coatingand metal treatment will protect the steelsubstrate against corrosion for a period inexcess of 30 years in normal industrial, urban, suburban and rural environments.”

Colorcoat Prisma® Fire performance


Fire performance is a fundamentalrequirement when considering theperformance of a building in a potential firesituation for Building Regulations andinsurance requirements.

UK Building RegulationsFollowing a decision to harmonise standardsin the construction sector across Europe, newEuropean standards have been introducedinto the regulations. At present in the UK,there is a period of co-existence of standardsand either EN Standards or BS 476 can be usedto demonstrate compliance.

Wall applicationsBritish Standard tests

1. Surface spread of flame productsBS 476 Part 7 ‘Method for classification ofsurface spread of flame of products’, specifiesa test method for measuring the lateral spreadof flame along the surface of the sample. Theclassification system is based on the rate andextent of the spread of flames (results areclassified from 1 the best, to 4 the worst).

When tested, Colorcoat Prisma® has a Class 1surface spread of flame.

2. Fire propagationBS 476 Part 6. ‘Method of test for firepropagation of products’ - The test specifiesthe procedure for measuring the firepropagation indices of the product.

When tested, Colorcoat Prisma® has a firepropagation index I = 3.2 and a sub index i1 = 2.0.

3. Class 0 SurfaceA Class 0 or “low risk” surface is defined in theBuilding Regulations as having a Class 1surface spread of flame and fire propagationindices I ≤ 12 and i1 ≤ 6 or is composedthroughout of materials of limitedcombustibility.

Colorcoat Prisma® meets the requirements fora Class 0 surface.

4. Fire resistance of external walls andinternal compartmentationBS 476 Part 22 ‘Fire resistance of non-loadbearing elements’ test measures theperformance of a wall when exposed to heaton one face from a furnace with a definedtemperature characteristic.

Colorcoat Prisma® can be used in wallcladding systems which are assessedaccording to BS 476 Part 22.

European Standard tests

Euroclassification - Reaction to fireReaction to fire classification is carried out inaccordance with EN 13501. Colorcoat Prisma®has been tested to the following Europeantest standards.

EN 13823, often referred to as the singleburning item test.EN 11925, a small flame igniteability test.EN 1716, measurement of calorific value.

When tested in a configuration as defined inEN 14782, Colorcoat Prisma® can be classifiedas A1.

Roof applicationsBritish Standard tests

External fire exposure roof testThe performance of roof systems to resist firespreading to the roof of a building, from a fireoutside the building itself, is assessed bytesting samples of the roof in accordance withBS 476 Part 3.

The test rates the resistance of the roofstructure to fire penetration with results ratedfrom A (best) to D (worst), and the spread offlame across the roof again with results ratedfrom A (best) to D (worst).

When tested as an external roofing claddingsystem, Colorcoat Prisma® achieves Class AAwhich is the highest rating.

fIre performANCe

European Standard tests

Euroclassification - External fire performancefor roofs/roof coveringsEN 1187 defines a number of different testmethods for assessing the performance ofroofs/roof coverings. Performance is ratedfrom B ROOF (best) to F ROOF (worst). EN 1187test method 4 is based on BS 476 part 3 and isthe only method accepted in the UK.

When specified as an external roofingcladding system, Colorcoat Prisma® achieves aClass B ROOF.

EN 1187 test methods 1, 2 and 3 are usuallyspecified in Europe, dependant upon thelocation.

EN 1187 test method 1 German testEN 1187 test method 2 Nordic testEN 1187 test method 3 French test

Colorcoat Prisma® when used inconfigurations covered by EN 14782 isdeemed to satisfy without the need fortesting, the requirements for external fireperformance in accordance with CommissionDecision 2000/553/EC.

Insurance requirementsInsurance companies often specifyadditional fire performance criteria and/ortests which building components must meet.Cladding systems that meet therequirements of these tests are seen aspresenting a lower level of fire risk.

The Association of British Insurers (ABI) whichuses the Loss Prevention Certification Board(LPCB) assessment, and FM Global who havetheir own FM Approvals, are the two mainbodies that undertake testing.

ABI and Loss Prevention Certificate Board(LPCB)The LPCB specifies two separate standards:

• LPS 1181 Fire growth tests

• LPS 1208 Fire resistance

Figure 28. Example of material during an LPS 1181 test

FM Global and FM ApprovalsFM Approvals is the testing and certificationbody for FM Global.

It applies to two separate standards forassessment of wall systems and panel roofs:

• 4881 Approved Standard for Class 1Exterior Wall Systems

• 4471 Approved Standard for Class 1Panel Roofs

The standards cover a number of keyperformance criteria including fire, wind,traffic, hail and water-tightness.

Colorcoat Prisma® can be used in roof and wallcladding systems which can meet therequirements of the LPCB and FM approvalsassessments.

Colorcoat Prisma® Fire performance


Colorcoat Prisma® is the first pre-finishedsteel manufactured in the UK to beregistered with the Water RegulationsAdvisory Scheme (WRAS) for cold water use.

WRAS ApprovalColorcoat Prisma® having passed the testsundertaken by the Water Quality Centre, ofeffect on water quality, is suitable for use incontact with potable (drinking) water.

This approval enables all colours of thestandard colour range of Colorcoat Prisma® tobe used as part of a rainwater collectionsystem without any detrimental effect to thewater quality. It also means that it is suitablefor use in drinking water storage tanks.

Any product or fitting in contact withwholesome water in the UK, must comply withThe Water Supply Regulations 1999. As an Actof Parliament this is a substantial documentbut in summary the product or fitting shouldnot ‘waste, misuse, cause undue consumptionor contaminate water supplied by anundertaker’. The Water Act 2003 defineswholesome water as water used for drinking,cooking, washing or sanitary purposes. AWRAS Material Approval demonstrates that aspecific material or component does notcontaminate the wholesome water andtherefore satisfies that particular requirementof The Regulations.

The test methods and criteria used by WRASto assess non-metallic materials are describedin BS 6920:2000 ‘Suitability of non-metallicproducts for use in contact with water intendedfor human consumption with regard to theireffect on the quality of the water’.

The BS 6920:2000 Standard tests for:

• Impact odour/flavour on the water.

• Cause change in the appearance of thewater (colour, turbidity).

• Growth of micro-organisms.

• Extraction of substances which may beharmful to human health.

• Extraction of metals.

WRAS approval does not strictly apply to useof rainwater harvesting, but it offers anyprospective clients peace of mind with theknowledge that Colorcoat Prisma® does notcontaminate wholesome water so it will notcontaminate the harvested water.

Colorcoat Prisma® is included in the WRASonline directory www.wras.co.uk

Figure 29. WRAS Certificate (WRAS approval number for Colorcoat Prisma® is 0905524.)

WATer hArveSTING





Tata Steel has long been at the forefront ofresponsible sourcing. Colorcoat Prisma® isfully compliant with REACH regulationsregarding the use of chemical substancesincluding pigments.

REACH (Registration, Evaluation andAuthorisation of Chemicals) is a EuropeanRegulation. It addresses the production anduse of chemical substances and their potentialimpacts on both human health and theenvironment. It requires manufacturers andimporters to gather information on theproperties of their chemical substances and toregister the information in a central databaserun by the European Chemicals Agency(ECHA) in Helsinki.

At Tata Steel we do not utilise lead chromatebased pigments in the Colorcoat Prisma®colour range.

Tata Steel is the first pre-finished steelproducer to achieve BES 6001 (very goodrating) in recognition of responsible sourcing.

With almost every business in Europe having aresponsibility under REACH legislation,specifying Colorcoat Prisma® provides clientswith the confidence that they are meetingtheir corporate social responsibility (CSR)obligations and using a product that is fullycompliant.

Colorcoat Prisma® is fully compliant with allcurrent REACH legislation. To assist customers,updates on REACH obligations, together withproduct health and safety data sheets, areavailable.

ComplIANCe WIThreACh

Colorcoat Prisma® is ideal when used inintegrated renewable energy systems. It hasbeen proven to provide superior solar-thermal absorption capability and excellentdurability when used as a collector for activesolar air heating solutions such as ColorcoatRenew SC® by Tata Steel and is also the onlyapproved pre-finished steel for use withSOLON SOLbond Integra, a highly efficient,lightweight and frameless PV solution.

Colorcoat Renew SC®Colorcoat Renew SC® is a highly efficient solarair heating system from Tata Steel, thatencompasses system design, renewableenergy generation and control to providespace heating and ventilation air for suitablebuilding types whether it's new build orretrofit.

How it worksThis renewable energy system captures heatfrom the sun and draws it into the buildingthrough a micro perforated Colorcoat Prisma®collector installed as an additional skin onto asoutherly facing wall.

The pre-heated fresh air can then bedistributed directly into the building asventilation air or ducted to the main heatingsystem to reduce energy load.

Benefits • The superior solar absorption rates and

proven durability of Colorcoat Prisma®maximise the efficiency and longevity ofthe solar collector.

• Colorcoat Renew SC® can provide up to50% of a building’s daytime space heatingrequirements.

• Typically up to 75% efficient in convertingsolar energy into usable heat.

• Typically provides an average carbonpayback of just four months.

• As part of the system, Tata Steel havedeveloped a user friendly software modelthat enables us to determine the optimumsystem design for your needs and provideaccurate predictions of renewable energydelivery, CO2 savings and payback periods.

• Colorcoat Renew SC® also includes a pre-engineered control system to maximisethe delivery of renewable heat and enabledata monitoring and metering for futuresystem optimisation.

Figure 30. Diagram of airflow through theColorcoat Renew SC® system

Solar thermal performanceThe collector colour and the material used iscritical for determining the thermalabsorptivity rates and collector efficiency. Ourtechnical knowledge and expertise hasresulted in the development of a range ofcolours that deliver good efficiencies.

reNeWABle eNerGyApplICATIoNS

Colorcoat Prisma® Renewable energy


3

1 Destratificatio

n

98

6

5

7

4

2

Key

1 Colorcoat prisma® microperforated solar collector2 Summer by-pass damper3 Inlet damper4 recirculation damper5 fan/air-handling unit6 Transition duct7 distribution duct8 Colorcoat renew SC® control system9 Supplementary heating system

Table 1. Solarthermal performance by colour

Colorcoat Prisma® SolarthermalPerformance

BlackVery High

Kronos

Anthracite

Anthracite Matt

Chocolate BrownHigh

Clover

Atlantis

Slate Grey

Helios

Oxide Red

Alaska Grey

ZeusGood

Grey Aluminium

Pegasus

Denim

Terracotta Matt

Orion

Copprium Matt Moderate

Ephyra

Aquarius

Silver Metallic

Athena

OysterLow

Sirius

Hamlet

Cream

White

Colorcoat Prisma® Renewable energy


Guaranteed with Colorcoat Prisma®When part of the Colorcoat Renew SC®system, the corrosion resistance and colourstability of Colorcoat Prisma® is guaranteed forup to 25 years in inland Northern Europeanlocations.

PhotovoltaicsColorcoat Prisma® is the only approved pre-finished steel for use with SOLON SOLbondIntegra, a unique roof top PV solution thatcombines the strength and durability ofColorcoat Prisma® with the high powerframeless SOLON SOLbond PV modules.

The system consists of high efficiency SOLONSOLbond PV modules weighing less than 10kg/m2; a pre-finished steel roof system usingColorcoat Prisma® by Tata Steel, and a speciallyformulated silicone bonding adhesiveenabling the installation of SOLON SOLbondPV modules directly onto the roof surface.

The components are combined to form alightweight, frameless system, with up to 25years warranty for maximum investmentsecurity.

SOLON SOLbond Advantages:• High efficiency, high power-density.

• Low system weight – less than 10kg/m2.

• No roof penetrations.

• No framing substructure required.

• 10-year product guarantee1).

• Up to 25 years warranty on adhesivebonding2).

• 5-stage performance guarantee over 25years1).

• Includes SOLON photovoltaic insurance3).

• Positive sorting of power classes (0 to + 4.99 Wp).

1) According to SoloN product and performanceGuarantee.

2) According to SoloN Solbond Integra Terms andConditions of Warranty and Guarantee. valid forroofs approved by SoloN.

3) valid for the countries of the european union.

Figure 31. SOLON SOLbond Integrawith Colorcoat Prisma®

Colorcoat Prisma® Advantages: • Backed by up to 25 years performance

guarantee. Compatible with SOLONSOLbond performance guarantees.

• Optimum combination of corrosionresistance, UV resistance and temperaturestability.

• The complete standard range of solidcolours and specially selected metalliccolours of Colorcoat Prisma® by Tata Steelhave been approved for use with SOLONSOLbond Integra.

• SOLON SOLbond and Colorcoat Prisma® areperfectly suited to the Sika bonding systemfor optimum panel bond strength.

• Colorcoat Prisma® colours surpassrequirements of RUV4 and RC5 certificationas per EN 10169:2010.

Colorcoat Prisma® Sustainability


Sustainability in terms of material usage,construction, occupation and end of life hasbecome an important consideration in thedesign and specification of buildings. Ourcommitment to sustainable practice isexemplified in the development,manufacture and support of ColorcoatPrisma®.

Increasing focus on sustainability is beingdriven by factors such as legislation, consumerpressure and a desire to provide a betterquality of life for people withoutcompromising the future. We have an ongoingcommitment to reduce CO2 emissionsassociated with pre-finished steel manufactureand we work with leading experts to ensurethat both Colorcoat® products, and the roofand wall cladding systems that they are part of,contribute to sustainable building envelopesolutions - now and in the future.

Steel manufactureTata Steel is continuing to work hard tosubstantially reduce the embodied CO2 in itssteel products. We have a climate changestrategy with a clear objective to reduce CO2

emissions from steelmaking by 20% by 2020.This is being delivered through a mix of majorand smaller investment projects, goodhousekeeping and burden optimisation insteelmaking.

We are also working on a long-term ‘Ultra LowCarbon Dioxide Steel’ project with otherEuropean steelmakers to identify a step changereduction in CO2 emissions in excess of 50%.

The steel used in Colorcoat Prisma® is made byTata Steel at Port Talbot in South Wales where£60 million has been invested to capture the‘offgas’ generated in steelmaking for use as anenergy source. As well as significantlyreducing electricity and natural gasrequirements, the scheme reduces the plant’sCO2 emissions by 3% per year.

Colorcoat Prisma® manufactureColorcoat Prisma® is manufactured at the TataSteel site at Shotton in North Wales. AtShotton our strategies to deliver significantreduction in site CO2 emissions have included:a move from road to 100% rail for all feedstockcoming from Tata Steel in South Wales; a focuson process and operational energy reductioninitiatives such as installation of variablespeed drives, energy-efficient lighting andparticipation in an ‘energy from waste’ scheme.

Colorcoat Prisma® uses steel made by TataSteel from a combination of recycled steelscrap and molten iron. At Shotton we settargets to ensure the efficient use of materialssuch as Zinc and paint to minimise waste.More than 95% of our Zinc pot waste isreclaimed and recycled. Solvents used forwashdowns are filtered, distilled and returnedto us as a 50% recycled blend.

Sustainable design and useA key part of sustainable design is specifyingproducts that offer long-term performanceand minimised emissions during the life timeof the building.

We have worked closely with the leadingarchitectural school at Oxford BrookesUniversity to study the operational impacts ofa building and identify the contribution thatpre-finished steel cladding can make to itsefficient running. This work has found that theoperational CO2 of a building can far outweighthe embodied CO2 associated with thebuilding fabric and construction. On very largebuildings it can account for as much as 80% oftotal CO2 of the building life cycle.

Optimising the building envelope efficiencythrough insulation, high air-tightness levelsand the minimization of linear thermalbridging can reduce the operational impacts.We have provided best practice advice andguidance on detailing in our Colorcoat®

technical papers so that cladding systemsmanufactured using Colorcoat Prisma® canreduce the associated heat losses from thebuilding envelope.

All Tata Steel supply chain partner roof andwall cladding systems in the UK have detailsdesigned and modelled to improve thethermal performance of the building.For more information visit www.colorcoat-online.com/technical

Investing in sustainable buildingenvelopesTata Steel, together with the Low CarbonResearch Institute and Welsh AssemblyGovernment, has invested £6 million in thecreation of a ‘Sustainable Building EnvelopeCentre’ at the Tata Steel site in Shotton, NorthWales. The aim is to create a constructionprocess which will enable the façade ofbuildings – both roof and walls – to betransformed from a passive energyconservation role to an active energygeneration, storage and management function.

Tata Steel Europe is also the lead industrialpartner in an academic and industrialconsortium led by Swansea University that isworking on a multi-million pound project todevelop hi-tech, sustainable, coated productsfor building envelopes. The project, namedSPECIFIC (the Sustainable Product EngineeringCentre for Innovative Functional IndustrialCoatings) aims to develop a portfolio ofproducts that will turn buildings into powerstations to generate over one third of the UK’srequirement for renewable energy by 2020.

SuSTAINABIlITy



System environmental assessmentIn the UK all roof and wall systems using pre-finished steel achieve a Green Guide A+ rating.Manufacture and processing of ColorcoatPrisma® into building envelope products,through our approved supply chain, canmaximise credits assessed through BREEAM.

Colorcoat Prisma® is exclusively from Tata Steeland, as such, is fully traceable. Ourmanufacturing site has an environmentalmanagement system which has been certifiedto ISO 14001.

End of lifeWhen the building envelope comes to the endof its life, there are options to either extend it'slife further or ensure that it is disposed ofsafely and with minimum impact botheconomically and environmentally. By usingappropriate maintenance and remedial actionsuch as over-painting, Colorcoat Prisma® canlast almost indefinitely. If corrective action isnot an option there is a well established andvery efficient infrastructure which ensures thatall steel collected at end of life goes back intosteel manufacture. This means that theinvestment in steel-making is never wasted,making steel the most sustainableconstruction material.

Colorcoat Prisma® is truly recyclable withoutany loss of quality, time after time. This makesColorcoat Prisma® a cradle to cradle product inthat, at the end of its life, it can be reused orrecycled rather than be disposed of as waste.

Life cycle assessmentWe take a holistic approach to understandingand minimising the environmental impactsover the whole life of the building. Thereforewe constantly strive to ensure that themanufacturing processes and materials usedto manufacture Colorcoat Prisma® are

the most sustainable available. Moreover it'senhanced robustness and durability meansthat it significantly outperforms other pre-finished steel in terms of environmentalimpacts over the full life cycle.

To demonstrate environmental impacts and toallow you to make detailed comparisons andinformed decisions when purchasingconstruction products, Tata Steel has carriedout comprehensive life cycle assessments on awide range of cladding systems using ColorcoatPrisma®. For further details please visitwww.colorcoat-online.com/sustain

Confidex Sustain®A cradle-to-cradle analysis of the life cycle forColorcoat® assessed cladding systems meansthat the products environmental impacts arefully measurable and traceable. You can easilyaccount for carbon emissions during both theconstruction and use of the product and canbe assured that when selecting ColorcoatPrisma®, emissions have been understood andminimised at each stage.

As well as taking every step to reduceemissions from manufacture through tosystem installation, use and End of life, TataSteel offer the first CarbonNeutral® buildingenvelope by measuring and offsetting itsunavoidable emissions from cradle to cradle.This reduces complexity and helps you tobuild to carbon zero standards as well ascovering the performance of the ColorcoatPrisma® used on the building.

Confidex Sustain® is an enhancement of theConfidex® Guarantee, currently only availablefor the UK.

For a list of assessed cladding systems, to preregister your projects or for more informationon Confidex Sustain®, please call the ColorcoatConnection® helpline on +44 (0) 1244 892434or visit www.colorcoat-online.com/sustain

BES 6001 Responsible Sourcingstandard Many companies are recognising the need toprove that they are building with sustainabilityin mind. One way in which manufacturers canhelp is through responsible sourcing.Responsible sourcing provides an approach tomanaging a product from the point at which amaterial is mined or harvested in its raw statethrough manufacture and processing, use, re-use and recycling.

Through its commitment to sustainability and by managing its environmental impactsTata Steel are leading the way as the first pre-finished manufacturer to secure BES 6001certification for its Colorcoat® productsManufactured at Shotton including ColorcoatPrisma®.

Colorcoat® products by Tata Steel have gonebeyond compulsory requirements to achieve a‘Very Good’ rating, reinforcing the Colorcoat®mark of quality and expertise. The universalrating not only demonstrates Tata Steel’scommitment to producing materials in asustainable way, but also allows you to makeinformed decisions and meet your ownsustainability targets more easily.

Specifying Colorcoat Prisma® will provide theultimate reassurance that your pre-finishedsteel is sourced responsibly and sustainably,recognised by the BREEAM family ofcertification schemes and the Code forSustainable Homes, where credits are awardedfor construction products independentlycertified through BES 6001.

For advice and guidance on responsiblesourcing and a range of other Constructionrelated issues including BREEAM, contact theColorcoat Connection® helpline on +44 (0) 1244 892434.

Deeside Leisure Centre

Is a multi-million pound project to improvethe facilities at Deeside Leisure Centre and toreduce the overall energy consumption ofthe building. Colorcoat Renew SC®, an activesolar air heating system from Tata Steel, hashelped the Centre to reduce operationalcosts, improve the building’s environmentalperformance and supply clean, fresh air toprovide the optimum environment foroccupancy comfort.

Colorcoat Renew SC® captures heat from thesun and draws it into the building through amicro perforated Colorcoat Prisma® collectorinstalled as an additional skin onto thesoutherly facing wall.

The pre-heated fresh air can then bedistributed directly into the building asventilation air or ducted to the main heatingsystem to reduce energy load.

Chatterley Valley

If you think you know what a warehouselooks like, even a quick glimpse at theChatterley Valley Blue Planet distributionwarehouse in Newcastle-under-Lyme, NorthStaffordshire, will confound yourexpectations. Where most warehouses arerectilinear this one is sinuously curved; wheremost are of a single dull colour, this one isclad in stripes and different shades of green.

Using 260 m2 of Colorcoat Prisma® in SlateGrey as the solar collector, combining inherentdurability with proven superior absorptionrates for maximum collector efficiency. Thesystem is expected to provide 70 MWh solarradiation and 40 MWh reduction of thermallosses each year, equating to payback in less

There were two drivers of this design. Onebeing the desire to make the building asenvironmentally friendly as possible. The otherwas to fit as unobtrusively as possible into aninhabited area with a building that manywould view from above, from housing onnearby hillsides.

The building utilised Colorcoat HPS200 Ultra®for the roof and Colorcoat Prisma® for thewalls. Colorcoat Prisma® was consideredcarefully not only for its superior aestheticsbut also its environmental credentials.

The architect looked very carefully at thesourcing of materials, selecting whereverpossible those that had an A or an A+ rating inBRE Global’s Green Guide to Specification.Colorcoat Prisma® has since secured BES 6001certification for responsible sourcing,providing the ultimate assurance that the

than 10 years providing benefits to for years tocome.

This project is an excellent example of howthe building fabric can be utilised to improvethe sustainability credentials of both new andexisting buildings.

pre-finished steel is sourced sustainably andcan also qualify for credits within BREEAM. Allmaterials were considered not only in terms ofhow they were sourced but also of how theywill eventually be disposed of, ColorcoatPrisma® was ideal as it is truly recyclablewithout any loss of quality, time after time, atthe end of its life it can be reused or recycledrather than be disposed of as waste.

All these factors contributed to this buildingbeing the first of its type to achieve a BREEAM‘Outstanding’ rating.



CASe STudIeS

Colorcoat Prisma® Services


The Colorcoat® brand is recognised as theexclusive Tata Steel mark of quality andmetal envelope expertise. Colorcoat®products are supported by a comprehensiverange of services, technical advice andguidance.

Colorcoat® technical support teamOur knowledge and expertise of the completerange of systems available with Colorcoat®products means that the advice and supportthat we can offer you is truly objective. We canhelp you to achieve the best technical solutionfor your building with the optimum inperformance and environmental credentials.

If you are building to specific sustainabilitycredentials or performance criteria, we canwork with you at the design phase of yourproject to help you integrate theserequirements and deliver technically superiorbuildings that match your vision.

Whether you require information on the latestbuilding regulations, calculations for a specificproject or advice on integrating renewabletechnologies you can contact the ColorcoatConnection® helpline on + 44 (0)1244 892434to request a visit from your regionalrepresentative for impartial advice andsupport on a broad range of topics including:

• Specification support.

• Building Regulations.

• Energy efficiency, savings and paybacks.

• Building integrated renewable technologiesand feasibility studies.

• Responsible sourcing.

• System suitability, durability andguarantees for project specific applications.

• Environmental Product Declarations andcalculations.

• Structural implications.

• Health and Safety.

• Fire performance.

• Acoustics.

• Sustainability assessment tools such asBREEAM.

Colorcoat Connection® helplineThis dedicated helpline offers immediate andeasily accessible advice and guidance on awide range of construction issues. Contact uson +44 (0) 1244 892434.

Colorcoat® technical papersWe have produced a number of technicalpapers that can help you address key issuesfor UK building design and construction, fromlow carbon building design to fireperformance.

For a full list of downloadable papers, visitwww.colorcoat-online.com/technical

Colorcoat® supply chain partnersColorcoat® products are available through ourmarket-leading supply chain partners. Werecommend their CE-marked and SCI-assessedsystems for the very highest quality andservice in the UK and worldwide.

For further details on our supply chainpartners in the UK, please visit www.colorcoat-online.com/SCP

Tata Steel accredited distributorsOur Tata Steel accredited distributors in the UKcan provide you with any colour from theColorcoat Prisma® range in small quantities.These are ideal for small projects, flashings,soffits, louvers, fascias, canopies and cornerdetails.

For details of Tata Steel accredited distributorsvisit www.colorcoat-online.com/distributors

ColorCoAT®

ServICeS

Sales Contact DetailsTata SteelShotton Works, DeesideFlintshire CH5 2NHUnited KingdomT: +44 (0) 1244 812345

Colorcoat Connection® helplineT: +44 (0) 1244 892434E: [email protected]

www.colorcoat-online.com

Trademarks of Tata Steel UK LimitedAquarius, Atlantis, Colorcoat, Colorcoat Connection,Colorcoat HPS200 Ultra, Colorcoat Prisma, ColorcoatRenew SC, Confidex, Confidex Sustain, Copprium,Galvalloy, Hamlet, Helios, Kronos, Orion, Pegasus,Repertoire, Sirius and Zeus are trademarks of TataSteel UK Limited.

CarbonNeutral is a registered trademark of theCarbonNeutral Company.

Care has been taken to ensure that the contents ofthis publication are accurate, but Tata Steel EuropeLimited and its subsidiaries, (including Tata Steel UKLimited), do not accept responsibility or liability forerrors or information that is found to be misleading.Suggestions for, or descriptions of, the end use orapplication of products or methods of working arefor information only and Tata Steel Europe Limitedand its subsidiaries accept no liability in respectthereof.

Before using products or services supplied ormanufactured by Tata Steel Europe Limited and itssubsidiaries, customers should satisfy themselves asto their suitability.

Printed with biodegradable vegetable inks onmaterial sourced from responsible managed forests,certified in accordance with the FSC. Contains 10%recovered fibre, diverting waste from landfill.

Copyright 2013 Tata Steel, Registered Office: 30 Millbank, London SW1P 4WY, Registered in England No. 2280000

Language English 0413

Date post:	01-Apr-2020
Category:	Documents
Upload:	others
View:	2 times
Download:	0 times

Colorcoat Prisma Technical · steel, Tata Steel products and services are widely used in the...

Documents