Quick Reference Guide – Fire Ratings

All of the above materials are available in our range of rainscreen systems and in a range of colours.


This information should be used as a guide only, and we advise that you should review the product manufactures own datasheet

A1 = Non Combustible

A2 = Limited Combustibility

Euroclass Classification Guide

Euroclass Classification Guide

System Performance

We have tested our Optima FC+ and TFC+ systems to BS8414-2, and is compliant to BR135 classification 

Need a sample?

To request a sample, arrange an appointment or ask a question:


Call +44 (0) 191 587 9213

A1 Further Details

Copper demo


Copper is a non-ferrous metal. The natural development of copper painta is one of coppers unique characteristics.

Premier Inn Milton Keynes Corten Rainscreen Cladding 11


Real Cor-ten A Steel is weather resistant. Resists atmospheric corrosion better than normal structural steels due to the dense, protective oxide layer (patina) that forms on the surface.

Erie Basin Cover

Precoat Material

Precoat Material (Pvf2) has excellent colour and gloss retention meaning low maintenance and available in a wide range of solid, metallic and structured colours.

The Springs Thorpe Park Leads 7

Stainless Steel

Stainless Steel is corrosion resistance and highly versatile, this tough metal requires relatively low maintenance.

Northern Ballet & Phoenix Dance Theatre | Zinc Rainscreen Cladding


Zinc is a non-ferrous, self-protecting metal. Natural zinc forms its own protective layer, called a patina, when it is in contact over time with air and water.

Anodising cover


Anodising enhances the natural qualities of aluminium, it is corrosion and abrasion resistance.


Useful links…

Testing / Warranty

Safety has always been our primary concern. Sotech’s commitment to authentic engineering capability has been witnessed over several years in the testing of products as they are being developed. All Sotech Optima Rainscreen has been witnessed and certified by CWCT for wind serviceability and safety, air permeability and water penetration. We have completed several successful fire tests and welcome and encourage full scale system testing.


Useful links: 


Latest Case Studies


TFC System Downloads

Download the full system details:

Economical discreet fixed panel system, complete with rail and bracket support.

System fully independently CWCT tested and certified.

Download PDF for full details.

Bim Objects

Optima Rainscreen is BIM ready

Sotech as a manufacturer within the construction industry is striving to provide our clients with accurate digitised product information to help and support our customers and other stakeholders to drive BIM forward.

SOTECH Safe Hands M



Established in 1982, Sotech is a leading manufacturer of bespoke metal rainscreen cladding and architectural facade systems. When you choose us, you’re choosing a safe pair of hands.

Speak to an expert

If you require advice with design detail, assistance with a specification or to discuss your project in detail contact our technical department who have over 38 years’ experience in the construction industry. The team is on hand to provide knowledge and support at every stage of your project.