We are GAP, we are family owned, and roofing runs in our blood.

Georgia-Pacific's high-performance gypsum roof boards are built for increased strength in low slope roof applications.

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.

Henry® Blueskin® RF200 is an SBS modified bitumen roofing membrane underlayment reinforced with a superior skid-resistant polyolefin surface film.

Trust Henry for all your roofing needs. Backed by more than 80 years of continuous building product improvements.

Keep heat in and cold out with insulated weather-resistant nailable roof decking panels from Homasote.

IKO’s Shingles are created using the industry’s most advanced technology and selected by consumers who demand the best in terms of quality, durability, and value.

Whether your project is new construction, an addition, or repair, rely on MFM Building Products for the best in underlayment technology solutions. The choices are complex, involving all kinds of roofing materials, all kinds of substrates, and all kinds of climates. MFM underlayments help you match performance and cost factors for virtually every job.

PermaFelt Synthetic Roofing Felt delivers exceptional weather barrier performance compared to traditional asphalt products and other synthetic underlayments.

TAMKO offers a variety of professional-grade roofing accessories, from cements and sealants to underlayments and ventilation products.

TAMKO® provides a complete line of saturated organic felt roll roofing products for use as shingle underlayments.

TYPAR® weather-resistant barriers bring superior strength and intelligence to the task of defending walls and roofs from water, air, and damaging rays.

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

Don’t let the threat of leaks keep you up at night. Stick it to the rain with our new ZIP System™ waterproofing peel and stick roofing underlayment.