About GAF Lock-Down Primer

Lock-Down Primer exhibits the unique ability to “wet” into weathered substrates, developing superior adhesion while resisting corrosive conditions, even when sound surface rust is present. Loose, flaking, or unsound rusted metal must be brought into sound condition or replaced. Lock-Down Primer is an excellent primer for use under acrylic or solvent-based roof coatings and industrial finishes.

Features & benefits

Product Documentation

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