Installing loose lay vinyl over concrete is a very common procedure, but it requires careful attention to the condition of the substrate. Concrete is porous and can hold significant moisture, which can cause issues if not tested properly. Before beginning, use a calibrated moisture meter to verify the moisture emission rate of the concrete slab. If the concrete is 'sweating' or has a high moisture content, you may need a moisture barrier or a drying period before the installation can safely proceed. Flatness is equally important. Loose lay planks are flexible, and they will conform to any bumps or dips in the concrete. If the slab is not flat to within the manufacturer’s specified tolerance (usually 3/16 inch over a 10-foot radius), the joints may become visible or the planks may lift. Use a cementitious self-leveling compound to fill cracks and smooth out the surface before installing your vinyl. Taking the time to prep the concrete properly is the single most important step in ensuring a professional, long-term result.
Key considerations
- loose lay LVP
- concrete subfloor
- vinyl installation
- flooring preparation
- flooring over concrete
- loose lay installation