(PVC) waterproof membrane is a kind of thermoplastic PVC membrane. The membrane is made of polyester fiber fabric as reinforcement. Through a special extrusion coating process, the double-sided polyvinyl chloride plastic layer and the middle Polyester reinforcing ribs are combined to form a polymer coil. The combination of a polyvinyl chloride plastic layer with an advanced formula and a polyester fiber fabric with a mesh structure makes the roll material have excellent dimensional stability and low thermal expansion coefficient, and it has a good waterproof effect.　　

Characteristics of PVC waterproof membrane: 　　

1. Polyvinyl chloride PVC waterproof membrane has high tensile strength, good elongation, and small thermal dimensional change rate; 　　

2. It has good weldability, and the seam becomes one body with the base material after hot air welding; 　　

3. It has good water vapor diffusivity, the condensate is easy to be released, and the moisture and moisture remaining in the grassroots are easy to be discharged; 　　

4. Resistance to aging, ultraviolet radiation, chemical corrosion, root penetration; 　　

5. Good flexibility at low temperature (-20℃); 　　
6. Long service life, aging resistance, roofing materials can be used for more than 20 years, underground up to 50 years, and no environmental pollution; 　　

7. The color surface reflects ultraviolet radiation, the surface of PVC waterproof membrane absorbs less heat and the temperature is low; 　　

8. Excellent flexibility and extensibility, high tensile strength, excellent dimensional stability, high mechanical strength, erosion resistance, root penetration resistance, weather resistance, UV resistance, and hail resistance; 　　

Precautions for PVC waterproof membrane construction: 　　

1. When laying PVC waterproof membrane, pay attention to the construction environment temperature, and the temperature of membrane is above -5℃. When using the full adhesion method, the temperature of the coil can only be above 5℃; 　　

2. When paving the PVC waterproof membrane, special parts should be an additional layer; 　　

3. Pay attention to construction protection, and the coil should be temporarily fixed before the end of the daily construction to avoid being blown up by the wind; 　　

4. The construction of the waterproof layer should be carried out after the previous process is completed, and no cross construction is allowed. If you need to install the equipment on the roof where the waterproof membrane is laid, you should make an additional layer treatment on the foundation of the equipment. If you need to build a high roof on the waterproof layer, you need to pass the waterproof layer acceptance.