A truly ignition resistant product. The GRCLAD fits the definition of limited combustibility material and the IWUIC standard of ignition-resistant building material in 20 states in the USA. By substituting the initial cellulose layer with a glass-strengthened core, Parklex Prodema have achieved a cladding panel that is compliant with the fire-resistant standards of the American Society for Testing and Material (ASTM)—all while preserving all the advantages of Parklex Prodema Products.