Roberts Harmony 3 in 1 Underlayment

A 100 square foot roll of premium 3-in-1 underlayment for use under all laminate and engineered floating floors. Harmony provides the moisture barrier, sound reduction and cushioning required for proper installation in a single 3-in-1 product. Unique construction creates a pocket of constantly circulating air which inhibits mold growth. Ideal for condos, basements, and multii-level dwellings. Comes with an 8 inch overlap with an adhesive strip for easy installation. Both tests measure sound transference from an upper level room to a lower level room. The IIC measures sound such as moving furniture and walking, while the STC measures sound such as voices and television. Minimum sound rating required by most building codes and architects is 50. *Compression Test Results In a standardized test using 1,320 lbs. of pressure, Roberts Harmony Underlayment retained 96% of its original thickness after seven days, compared to only 57% by a leading 2-in-1 foam product.