GAP is a trusted manufacturer of roofing underlayment and building paper products for roofing.

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

Grip-Rite coatings and sealants are made by the top coating manufacturers so you can depend on them for durability and strength, even in the toughest weather conditions.

Grip-Rite ShingleLayment synthetic underlayment is a water shedding device designed to reduce the occurrence of leaks caused by wind driven rain penetrating primary roof coverings, and as temporary cover on exposed roof system.

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

For a roof to last, your roofing system must include protection from wind-driven rain. This is accomplished by installing waterproofing underlayment directly beneath the shingles. WeatherLock® Series self-adhesive water-proofing underlayment is perfect for both new construction and reroofing projects. In addition to protecting the roof deck from damage from ice dams and wind-driven rain, WeatherLock should also be used on areas of the roof where water has a tendency to collect or flow. Valleys, vents, chimneys and skylights are examples of where WeatherLock Series underlayment should be considered.

ProFelt Plus and ProFelt 30 synthetic roof underlayments deliver exceptional weather barrier performance, coated on both sides with a proprietary rubberized polyolefin slip resistant coating offering an unsurpassed level of slide resistance.  Custom logo available upon request.

• Non-woven, durable, lightweight synthetic roof underlayment
• ≤1 permeability for superior moisture resistance and protection against water infiltration
• Improved UV Resistance; ProFelt Plus - 90 days, ProFelt 30 - 120 days
• For use under asphalt, synthetic, metal, tile, and shake shingles
• Products in compliance with the Florida Building Code 7th Edition (2020)
• Limited 30-year warranty

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. Add it to ZIP System® sheathing and tape and register your eligible product for protection so strong, we’ll back it with a Leak-Free Guarantee.