As a homeowner or business owner, there are several reasons to use a basement vapor barrier. A simple protective sheet over the basement floor helps prevent moisture from rising up into the walls. This vapor barrier inhibits the production of rot, mold, and water damage in your walls.

If you have to replace your insulation because of mold saturation, water penetration, or any other moisture related issue, you’ll find a basement vapor barrier extremely useful. The plastic sheeting will protect the walls from dampness, which stops moisture from rising into the rest of the house.

Unfortunately, you’ll experience problems with fitting the plastic barrier if you have a lot of electrical outlets, ducts, and other connections. If you install insulation that is pre-fitted with a barrier, it usually faces upwards, meaning that the barrier will be less effective than usual.