Cafco 300 Vermiculite fire spray is a gypsum-based spray available for purchase in 20kg bags. This is a specialized product which requires skilled professional application with specifically designed fire spray equipment, however for small patch jobs it can be mixed and applied by hand. Vermiculite fire spray is suitable for fire protection of structural steel columns, beams, metal ducts and cables as well as textured finishes. It is approved for internal use as well as acoustic and thermal applications. It provides up to 4 hours protection.