A high-solids, moisture-catalyzed, dual-component polyurethane coating. GAF Elastuff® 103 Roof Coating, when used with Elastuff® 101 Base Coat, 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® 103 Roof Coating)