Coated Glass Facers (CGF) or coated glass mats are designed to be used as a dimensionally stable, fire resistant substrate for many different industries. Testing these coated glass facers show that they are antimicrobial and will not support the growth of mold and mildew. It is waterproof and will not shrink or expand when exposed to water. Various coatings are available to enhance adhesion to other products and weatherability. They are widely used in the commercial building and residential building industries