ISOLayment QT is a low-profile flooring underlayment made of recycled rubber, designed to reduce footfall impacts and improve the Impact Insulation Class (IIC) ratings of floor-ceiling assemblies. ISOLayment QT can be installed over plywood sheathing, concrete floors, heavy timber planks, and gypsum concrete. Finished flooring includes concrete, ceramic and stone tile, sheet vinyl, linoleum tile, LVT, and wood/engineered wood — which can be applied directly to ISOLayment QT.
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