Roof and Wall Cladding: Colorcoat Prisma®

Tata Steel - Building Envelope Colorcoat®

Designed to withstand the rigours of the external environment, versatile, lightweight and strong, Colorcoat Prisma® pre-finished steel is the ideal choice for your building envelope for long lasting colour.

With a contemporary colour range and an optically smooth finish, inspire your imagination. Colorcoat Prisma® provides the sophisticated look of a traditional rainscreen but without the expense.

Benefits include:
• Its 1.2mm gauge provides excellent levels of flatness for façade panels.
• Available in five popular colours as standard. And many others with a miniumum order quantity.
• Excellent robustness and impact resistance making it ideal for high traffic areas.
• Bespoke guarantee providing cover for up to 25 years.
• All solid and metallic colours surpass requirements of RUV4 and RC5 as per EN 10169:2010 proving outstanding colour retention and corrosion resistance.
• Optimised Galvalloy® metallic coating for superior corrosion resistance and cut edge protection.
• When tested in accordance with BS476 Part 7 has Class 1 surface spread of flame and meets requirements for Class 0 of the Building Regulations for England and Wales.

Backing of a tried and trusted brand, created and developed by Tata Steel.

Certified to BES 6001 sustainable sourcing.


To ensure performance in-use, Colorcoat Prisma® has undergone extensive testing to determine its durability. Both natural weathering of rainscreen panels fabricated from 1.2mm Colorcoat Prisma®, and accelerated tests at accredited sites in Europe have been carried out.

The results show that 1.2mm Colorcoat Prisma® meets the requirements of RC5 according to EN 10169:2010, this is the highest corrosion rating possible. SVRET (Scanning Vibrating Reference Electrode Technique) testing was also undertaken to look at the cut edge performance.

All natural weathering, accelerated testing and in-depth analysis of the performance of the cut edge confirm the superior performance of the Galvalloy® metallic coating coupled with the high corrosion resistant primer in protecting the exposed edge.

Robust paint technology
Colorcoat Prisma® for rainscreen applications is designed to withstand the rigors of the external environment. It consists of a high build robust paint system that provides a greater level of durability when compared with typical PVDF and polyester paint systems.

Colorcoat Prisma® for rainscreen applications is made up of a number of layers applied using the latest technology to a 1.2mm thick steel substrate sourced from our plant in South Wales. The 1.2mm gauge, manufactured to EN 10346:2009, ensures an excellent level of flatness and stiffness for the rainscreen panel.

Our unique Galvalloy® metallic coating is applied to this substrate followed by a high build primer, both which provide superior corrosion resistance. Finally the topcoat is applied which incorporates polyamide beads and utilises the latest polymer technology to provide abrasion and UV resistance.

The topcoat has a total nominal thickness of 50 microns. The same topcoat and corrosion resistant primer is applied to the reverse side of the steel substrate at a nominal thickness of 35 microns.

This provides the ideal solution for rainscreen applications where, in addition to the external face and cut edges, increased protection is required at the reverse side to deal with the microclimate between the rainscreen and the building wall. The reverse colour for this specific application is Hamlet RAL 9002.


Most pre-finished steel products use a Zinc metallic coating that provides corrosion resistance but leaves cut edges vulnerable to peeling or premature paint delamination. Colorcoat Prisma® uses our unique and proven Galvalloy® metallic substrate, a special mix of 95 per cent Zinc and 5 per cent Aluminium, providing unrivalled corrosion protection, even at the cut edges.


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Tata Steel - Building Envelope Colorcoat®

Tata Steel - Building Envelope Colorcoat®

Tata Steel's range of technically leading Colorcoat® pre-finished steel products have been comprehensively tested and manufactured to the highest quality standards, and provide the recognised mark of quality and metal envelope expertise exclusively...
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