Vapor Barrier Concrete Block Wall

Of rigid moisture proof insulation.

Vapor barrier concrete block wall.

Since warmer air has more moisture vapor will move to. A vapor barrier against the concrete surface is generally recommended before wood framing or flooring materials are installed. Not to be confused with a vapor barrier which is placed on the warm side of the wall just in front of the insulation and behind the drywall a moisture barrier goes against the basement wall. Concrete block with interior frame wall cavity insulation and brick or stone veneer applicability limited to mixed humid hot humid mixed dry hot dry and marine regions should not be used in cold very cold and subarctic.

Cover exposed foundation walls with 1 1 2 in. Older houses that haven t had drain tiles installed are especially prone to seeping walls and floors in basements. Below grade walls and floor slabs transmit ground moisture through concrete walls or slabs. Depending on your location 6 mil vapor barrier can also be used as part of a.

Attaching vapor barrier to a concrete wall can help to prevent the movement of moisture through the concrete and into the building. By nature vapor travels from areas of higher concentrations to lower. Concrete and concrete block are common but porous foundation materials. We used thermax brand available through lumberyards of polyethylene vapor barrier because it doesn t require an additional fire barrier.

Eliminating the movement of moisture into a building reduces the likelihood of mold and other problems caused by the buildup of water. Crawl spaces benefit from a polyethylene moisture barrier placed directly over the exposed earth. If the problem isn t severe painting concrete in the basement with a moisture barrier paint can solve the problem.