FloorMuffler LVT Encore 100-sf is a high performance Acoustic Underlayment & Moisture Barrier for use in residential and commercial flooring applications. As part of our Premium Collection, floorMuffler® LVT encore is the ideal underlayment for most Luxury Vinyl Tile/Plank, Rigid Core (WPC, SPC) floors with pre-attached pad. floorMuffler® LVT encore can be used in Floating installations.