... roof structure. Multi-purpose PVC Tarpaulin Sheet:“Multi-fiber PVC Single-ply roof waterproofing roll goods” products have been developed on ... ±2) °C,24h,≤1.0%(80±2) °C,(1344±1)h≤0.5%(80±2) °C,(1344±1)h≤0.5%≤0.5%5 Retention rate after heat ... joint7Absorbent—(70±1) °C,168±1h, ±3.0%(23±2) °C,168±1h, ±3.0%8Penetration resistance0.5Kg,300mm No water penetration0 ...