American Saturated Felt (ASF) has been in the roofing materials business since 1974. Starting in the Northeast United States, we are now shipping from coast to coast and internationally.

CertainTeed's waterproofing shingle underlayments are applied under roof shingles during new construction or re-roofing to protect your home’s interior from winter leaks caused by ice dams and wind-driven rain.

Grip-Rite coatings and sealants offer maximum protection designed to repair, seal, bond, coat or patch any roof project.

Grip-Rite ShingleLayment is the only roofing underlayment with the high performance of a synthetic underlayment, and the finished look of a shingled roof.

Grip-Rite® modified bitumen membranes are manufactured from formulas using only the highest quality materials, to meet or exceed, industry standards.

For a roof to last, your roofing system must include protection from wind-driven rain.

Protect roofs from water with DuPont Tyvek® synthetic roofing underlayment, engineered to deliver superior performance.