Why didn't I think of using this before!?!? My back sliding door gets TONS of traffic: kids, 2 dogs, guests etc. And then add a pool to the equation. My hardwood floors have a taken a beating!! I purchased this to use on hardwood to help offer some additional protection. It can be applied by one person, but 2 people are ideal. It's easy to roll out, easy to apply, and is a sufficient water barrier. It's very sticky & stays where it's put. It is a thin, blue plastic that comes in a roll and is easy to place at the starting point and just unroll it over then selected area. I stand on the end I placed first & walk forward with the role, so it adheres as I walk. It has been durable (changing it once every 2 weeks) & didn't break the bank as far as cost goes. Waaaaaay cheaper than refinishing hardwood floors. Great investment to protect your floors!!!!