Sentinel Premium Quiet Underlayment•Moisture Protection: Highly dense, cross-linked foam designed for premium shock absorption and protection against moisture•Superior Sound Reduction: Provides superior noise reduction that exceeds requirements of International Building Code standards•Mold Protection: Premium moisture protection guards against mold and mildew•Cushions Flooring: Crosslink technology helps prevent any long term compression and provides ultimate underfoot comfort•Levels Imperfections: Correct minor subfloor imperfections with its 2mm thick pad•Built-In Lip and Tape: Built-in lip and tape system allows for easy installation and exceptional moisture protection