Why Should You Use a Basement Vapor Barrier?
There are many reasons why you should use a basement vapor barrier after you have added insulation in your room. A protective sheet over the basement floor will help to prevent moisture from rising up into the walls. The basement vapor barrier will inhibit the production of rot, mold and water damage in your walls.
Reasons to Use a Barrier
If you have recently applied a new layer of insulation after the previous one was infected with mold, or because sodden with water, you may find a barrier useful. The plastic sheeting will stop the walls from becoming damp in the basement, which will then stop the moisture rising into the rest of the house, and potentially warping your floor boards. In areas with a low water table, a basement vapor barrier can prevent water damage to the rest of your home.
Reasons not to Use a Barrier
You may experience problems with fitting the plastic barrier if you have a lot of electrical outlets, ducts and other connections. Some problems with installing insulation which is pre-fitted with a vapor barrier, including putting the barrier in so that it faces upwards, rather than towards the bedroom, means that the barrier will be much less effective than usual.