About GAF Bonding Primer, PT A & B

GAF Bonding Primer is a two component, solvent-based epoxy primer designed to seal porous substrates while improving adhesion (formerly known as UniTile LV Sealer).

Features & benefits

Product Documentation

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Commercial roofing products: solutions for every roofing need

From single-ply membranes to full system solutions, and state-of-the-art digital services to hands-on training. GAF offers the range of durable, easy-to-use products and services you need to succeed.
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Resources for every professional

Contractor working on a commercial roof

Contractors

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
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Roofing suppliers

Find tools, documents, and training designed by GAF to help you serve your customers.
Dealer Resources