Cork flooring is made from the bark of the cork oak, laid over a particle- or fiberboard base and usually protected by a clear seal. It either snaps together and floats over the subfloor, or gets stapled, nailed, or glued down.
Water can cause cork to expand, then warp or crack. Furniture, high heels or cleats, pets, and direct sunlight can damage it too.
Lifespan: 10-20 years