Tri-Ply® APP Smooth Membrane

Lightweight, resilient, and durable, Tri-Ply® APP Smooth Membrane installed roof designs weigh less than two lbs. per square foot, resist splits and tears due to its pliability and elongation characteristics and features specially formulated modified asphalt for lasting performance.

Product Documentation

Tri-Ply® APP Smooth Membrane

GAF Commercial Chairman’s Circle Contractors

The GAF Commercial Chairman’s Circle recognizes exceptional contractors in the commercial roofing industry. Each year, GAF invites contractor businesses to join this key partnership based on shared business commitment, reputation, loyalty, capability, and philanthropy.

Resources for every professional

Contractor working on a commercial roof


We’re building new plants for greater capacity, and better systems for faster response and greater visibility.
Contractor Resources
An architect drafting blueprints

Architects & Design Pros

We’re building better, faster, more accurate access to the information you need.
Design Resources
A commercial storage facility

Property managers & owners

Whether you manage one property or many, we’re building the products and programs you need to reroof, restore, or maintain your investment.
Building Resources