company news about Comparison between PVC and TPO Waterproof Membranes

• a) Moderate aging resistance and long service life; high strength, good elasticity, excellent tensile performance; good resistance to high and low temperatures;
• b) It contains plasticizers in the ingredients, and plasticizer migration will cause the membrane to lose flexibility and ductility, or even break.

• a) TPO combines the excellent weather resistance and durability of ethylene-propylene rubber with the weldability of polypropylene;
• b) No plasticizers added, with high flexibility, no embrittlement caused by plasticizer migration, and long-term waterproof function maintained;
• c) There is a layer of polyester fiber fabric in the middle, which provides the membrane with high tensile performance, fatigue resistance and puncture resistance, suitable for mechanically fastened roof systems;
• d) Excellent low-temperature flexibility, maintaining flexibility at -40℃ and mechanical strength at higher temperatures;
• e) Excellent chemical resistance, resistant to corrosion by acids, alkalis, salts, animal oils, vegetable oils and lubricants, and resistant to the growth of microorganisms such as algae and mold;
• f) Heat aging resistance and good dimensional stability;
• g) Mainly white and light-colored, with a smooth surface and high reflectivity, having energy-saving effect and stain resistance.

It contains chlorine in its composition; during hot air welding, certain harmful gases will be generated, making it unsuitable for construction in relatively closed underground spaces.

It does not contain oxidized polymers or chlorine, no chlorine is released during welding and use, and it is harmless to the environment and human body.

Construction cannot be carried out below 5℃; when constructed at low temperatures, there are many wrinkles on the roof, and it hardens and is easy to break at low temperatures.

Construction can still be carried out in winter in northern China.

Cannot be in contact with asphalt materials; otherwise, the material will accelerate aging, shorten service life and lead to inability to weld; cannot be in contact with XPS, requiring a non-woven isolation layer.

Can be in direct contact with asphalt without an isolation layer, has good chemical resistance, and can be in direct contact with XPS without an isolation layer.

Due to plasticizer migration, the material becomes brittle and hard; if the roof membrane is damaged, repair work cannot be carried out and the entire membrane must be replaced.

Permanently weldable, simple to operate, and can be welded with new membranes at any time.