... Thin coatings (fire retardant) are used to reduce combustibility or surface flame spread of wood or cellulosic building materials. Thick coatings are used to provide fire resistive protection of steel. The characteristics of intumescent and nonintumescent coatings, and thick insulative...

... is generally performed with a specially designed machine that feeds the dry mineral fiber composition to a spraying nozzle where the fiber mixture is enveloped with water as it is sprayed onto the surface to be protected. Fire resistant characteristics and other important properties such as insulation...