Why GAF?

GAF is part of the largest roofing and waterproofing business in the world

Guaranteed Product Availability

Strong Financial Status

Highest Quality Products

Leading Manufacturer In North America

Timberline HDZ

America’s #1-selling Shingle just got better — again!

Now with GAF Time-Release Algae-Fighting Technology and LayerLock™ Technology, Timberline HDZ® offers everything you can expect from an architectural shingle roof, and more.

StormGuard

Peel & stick underlayment with blue, synthetic patterned surface for asphalt shingles and metal roof systems
Self-seals around fasteners and at vulnerable areas of the roof to protect against ice dams and wind-driven rain
Patterned surfacing provides great installer traction
250^oF high-temp rating is compatible with most metal roofing
Fiberglass-reinforced construction
Eligible component of GAF WindProven and residential enhanced warranties
Eligible for Lifetime Limited Warranty