100% Waterproof! It is a great option for a regularly wet floor.  Loose lay vinyl plank flooring is designed to keep moisture and water above the floor long enough that it can be cleaned up before getting through to the sub floor. AquaLuuuz is very easy to install, there is no need for nails, staples, or glue. The planks install flush to the walls, right up against them. No expansion gap is needed. Each plank also installs flush with the surrounding plank securely. The bottom surface creates a good amount of friction, almost gripping the sub floor underneath it.