Due to the strength of itself is not waterproof bitumen, used in roofing materials and waterproofing system, under temperature changes and weathered the external force, cracking leakage is inevitable, would not achieve the waterproof effect. And adding a waterproof material containing alkali-resistant fiberglass mesh, can enhance its wind resistance and tensile strength, so that it can withstand long-term weathering, cracking, waterproof, Fang fracture, avoiding the roof leakage to people with to remain unchanged, the role of mesh on people's production and life has played a major role.