Promat Promatect 250 Board 2025. How to calculate the thickness of fire protection for beams and columns. Promatect® 250 comprises autoclaved calcium silicate spheres (promaxon® is a synthetic hydrated calcium silicate in spherical form) bound in a mineral matrix.

Promat promatect is a high strength, dimensional stability and fire performance, fire protection board for structural steelwork and mezzanine floors. Promatect® 250 comprises autoclaved calcium silicate spheres (promaxon® is a synthetic hydrated calcium silicate in spherical form) bound in a mineral matrix.