Since the sixties, “engineered polymers” have become a cornerstone of modern technology. “Synthetic underlayment” is made from polymers that are engineered and optimized for use as roofing underlayment.
The polymer is only the beginning. It is typically procured from a company that specializes in the production of engineered polymers. Engineered polymers are then delivered to the underlayment factory in the form of plastic pellets, which are fabricated into synthetic underlayment products.