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Board for protection of steel

Product 91


Non-fibrous board to be fitted around structural steels and metal ducting, providing up to 104 minutes protection

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A non-fibrous, lightweight board measuring 1000mm x 1200mm. Affixed to steel to provide additional fire protection as well as insulation. Designed for use with structural steelwork and also metal ducting. Available in white as standard, or available faced with decorative laminate at extra cost.


– Can be easily cut to size with a sharp knife

– Can be faced with laminate or paint for decorative purposes

– Provides up to 104 minutes integrity and insulation

Application Instructions

Cut board to size with a sharp knife. Adhere board to steel using Envirograf Intumescent Adhesive (Product 46). IA Adhesive can also be used to fill in joints between boards. Off-cuts can be adhered into the webs of the steel, providing additional protection and preventing waste.

Case Studies

Order References / Sizes

Ref                   Dimensions

STB91/6           6mm thick x 1000mm x 1200mm

STB91/10        10mm thick x 1000mm x 1200mm

STB91/13        13mm thick x 1000mm x 1200mm