CUSTOM® TechLevel™ WSF Fiber Reinforced Self-Leveling Underlayment is a self-leveling underlayment designed for plywood and OSB subfloors. Its fiber-reinforced formulation eliminates the need for reinforcing lath while creating a smooth, level surface for floor covering installation. Featuring Controlled Cure Technology™, TechLevel™ WSF supports pours from 1/4" to 1-1/2" and is compatible with most radiant heating systems. It can be used beneath tile, stone, wood, vinyl, carpet, and other approved floor coverings. Specifications Specification Value Pot Life >15 Minutes Re-Heal Time 10–15 Minutes Compressive Strength (28 Days) >3,500 PSI Flexural Strength (28 Days) >1,350 PSI Walkable Time 2–4 Hours Dry Density 111.4–118.3 lb/ft³ Traffic Rating Extra Heavy Use Install Non-Sensitive Flooring >4 Hours Install Moisture-Sensitive Flooring 16–24 Hours
