About GAF Elastuff® 101 Base Roof Coating

GAF Elastuff® 101 Base Roof Coating, when used along with GAF Elastuff® 103 Roof Coating, creates a roof coating system that provides an excellent balance of tensile strength, elongation, and hardness, along with excellent durability, dirt and mildew resistance, chemical resistance, weatherproofing, and high abrasion and impact resistance (formerly known as United Coatings™ Elastuff® 101 Base Roof Coating).

Product Documentation

Resources for every professional


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