Floating, Loose-lay underlayment (no adhesive, no fasteners)
Availability
In Stock
Description
The Advanced Underlayment (US171) is a low-profile foam underlayment with a built-in moisture barrier, designed for floating luxury vinyl plank (LVP) and luxury vinyl tile (LVT) installations. It helps smooth minor subfloor imperfections, adds a bit of comfort underfoot, and supports cleaner installs over concrete or wood subfloors.
If you want a simple way to improve the feel of a floating floor while adding moisture protection, US171 is a reliable installer-friendly choice.
Features
SKU: US171
Material: Closed-cell polyethylene foam with integrated moisture barrier film
Thickness: 1.5 mm
Coverage: 200 sq ft per roll (typical)
Color: Blue / navy (varies by lighting and batch)
Gloss level: Matte
Installation method: Roll out and tape seams; floating install. No glue or fasteners
Subfloor compatibility: Wood/plywood/OSB or concrete
Use case: Floating LVP/LVT installations where added cushioning and moisture protection are needed
Installation Notes
Lay flat and butt seams (do not overlap).
Tape all seams to maintain the moisture barrier.
Do not nail, staple, or screw through the underlayment.
Follow the flooring manufacturer’s requirements for vapor protection and radiant heat limits.