Decorative Calcium Silicate Exterior Wall Board 1.Waterproof 2.Heat Insulation 3. ... .CE,SGS,ISO passed High Strength Decorative Calcium Silicate Exterior Wall Board1.Waterproof2.Heat Insulation3.Fireproof4.CE,SGS,ISO ... roof: It can be used in thermal insulation and waterproofing of flat roof systems. Also, it can be used ... directly. Contact us for more. Decorative Calcium Silicate Exterior Wall Board