This FloorMuffler 100 sq.ft. 2’11”. x 34.29′ LVT Flooring Underlayment is highly engineered and cross-linked with polypropylene foam and the ultraSeal self-sealing lip and tape system. It is mold and mildew resistant and provides superior moisture protection. This premium underlayment is the highest rated and most effective acoustic barrier on the market. Provides unsurpassed through-the-floor and footfall noise reduction. FloorMuffler LVT ultraSeal is the ideal choice for most residential and commercial luxury vinyl tile (LVT) flooring applications.