... load requirements of the building structure, especially as a flexible waterproof roofing and steel roofing, insulation materials, construction convenient, easy ... strengh high-qiality wool board, cutalong the length direction of the board, the filp can be made of rock wool batten.Rock wool lath shear, ... °CEnvironment protectionNo asbestos, cfcs, hcfcs free water resistance rock wool insulation board