Comes in 100 Sq. Ft. Roll For Use Under Laminate Engineered Wood Rigid Core Vinyl (5mm or thicker) WPC/SPC (5mm or thicker) LVT (5mm or thicker) Installation Methods Floating Double Glue Down Enhanced Vapor Barrier Superior Sound Reduction Recycled fibers absorb sound and keep it from traveling to other rooms. Makes click-together floating floors sound solid underfoot. Moisture Protection Recycled fibers allow installation over concrete to "breathe"- managing vapors from becoming bulk moisture. Attached vapor barrier protects the overlying floors from harmful moisture. Compression Resistant Dense recycled fiber structure supports the click-together mechanism and will uphold its supportive configuration under the consistent traffic of the overlying floor. Smoothing Out Imperfections Firm and supportive but flexible enough to form around sub-floor surface roughness. Helps cut down on extra sub floor surface prepping time. Insulation Value Provides additional comfort to the entire home during seasonal temperature changes. Approved For In-floor Heating Systems Allows heat to permeate evenly while helping to protect the floor covering material from the thermal shock. Made From 94% Recycled Materials A patented manufacturing process re-purposes post-industrial and post-consumer materials into high-performance underlayment. Certified Clean And Save Indoor Air Quality No VOC's (Volatile Organic Compounds) or off-gassing from materials For More Information See Specification Sheet Sku: QW100PLUS