The ROBERTS First Step Premium 3-in-1 Underlayment, 630 sqft roll is designed for use under floating laminate and engineered wood flooring. This product is meant for use on concrete slabs and wood subfloors that are below, on or above grade. This underlayment creates a pocket of constantly circulating air, which inhibits mold growth. It is effective for sound reduction, moisture protection, comfort and even helps level minor sub-floor corrections. For use with all laminate and engineered hardwood floating floors. Cushioning Styrofoam beads between plastic top and bottom layers for air circulation. Corrects minor subfloor imperfections and reduces ambient noise. Gold Guard antimicrobial protection and constant air movement inhibits mold growth and protects floors from moisture vapor. Ideal in condos and multi-level dwellings.

• Works with laminate and engineered hardwood floating floors
• Provides cushion and air flow to help suppress mold growth
• Great for multi-level dwellings