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TPO does not contain any chloride in its formulation.

PVC contains 30% plasticizer by weight, which becomes released into the environment during the service life. But, TPO does not lose any weight during its life. The migration of plasticizer from PVC compound gets accelerated by UV, high temperature or water contact.

PVC releases hydrochlorate anhydride in the air, which is hazard when inhaled, but TPO does not release any harmful gas or smoke during welding.

Reflective white color roofing membranes help alleviating urban heat island, improving air quality and reducing
... cooling costs.
SuperGuard is tough, with excellent physical properties, weatherability and resistance to host of chemical and
... environmental hazards such as acid rain.
Membrane warranty options from 5 to 15 years.