Does Shaw floorte need underlayment?

Shaw Floorte luxury vinyl plank generally does not need additional underlayment because it has attached pad and is designed as floating floor that can be installed over most subfloors, but underlayment requirements depend on subfloor condition and installation method. Shaw Floorte Pro and Floorte lines feature attached underlayment pad that provides cushion, sound absorption, and moisture protection, so additional underlayment is not required for most installations over plywood, concrete, and existing hard surfaces, and adding extra underlayment may void warranty if too thick or soft, causing floor to feel unstable. However, Shaw Floorte may need additional underlayment or vapor barrier in certain situations, such as over concrete subfloor with high moisture, where 6 mil vapor barrier may be required per Shaw installation instructions to prevent moisture damage, or over uneven subfloor where leveling compound needed rather than underlayment. For glue-down installation, underlayment not used. For floating installation, Shaw recommends not adding extra foam underlayment beyond attached pad unless Shaw approved underlayment used. Always follow Shaw installation instructions for your specific Floorte product, as requirements vary between Floorte Pro, Floorte, and other lines. Check Shaw website for installation guide. So generally Shaw Floorte does not need underlayment due to attached pad, but may need vapor barrier over concrete.