| abstract |
A water-based, fire-retarding coating composition comprising a water soluble alkali metal silicate, preferably sodium silicate or potassium silicate; a plasticiser and/or an adhesion promoter which may be an organic polymer or resin; a particulate formed of a refractory material i.e. a glass or ceramic, for example, silica, pumice, perlite; and water. Also disclosed is a water-based primer composition and a method of forming a surface coating or facing on a substrate using the water-based, fire-retarding coating composition and/or water-based primer composition. |