Underlayments
Commercial underlayments support and enhance commercial roof installations.
Related Components
View single-ply roofing projects
See how GAF products meet various roofing challenges
Commerical support teams
Design Services
Product and tech support, custom solutions, code assistance, and more 877-423-7663 Option 4, then Option 3
Email Us
Tapered Design
Regionalized Design Specialists who provide tapered solutions. Email TDG@gaf.com
See tapered
Commercial Customer Care
Talk to a professional who knows your regions and is dedicated to serving your business needs.
Contact GAF commercial
Building & Roofing Science
Book a virtual meeting to get free advice on your project-specific questions, code conundrums, and impossible details.
Book a meeting
Resources for every professional
Contractors
We’re building new plants for greater capacity, and better systems for faster response and greater visibility.
Contractor Resources
Architects & Design Pros
We’re building better, faster, more accurate access to the information you need.
Design Resources
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
Roofing suppliers
Find tools, documents, and training designed by GAF to help you serve your customers.
Dealer Resources
Additional Support
CARE Training
Our Low Slope training features techniques that save you time and money while building customer satisfaction.
Explore training