Vapor Barrier Paint For Concrete Walls
Concrete and concrete block are common but porous foundation materials.
Vapor barrier paint for concrete walls. In some cases such as cinder block construction it is impossible to install conventional water vapor barrier sheeting behind exterior walls. It combines a primer and finish in a single fast drying coat and is specially formulated for manufactured housing facilities. Is more of a solution for walls rather than ceilings to prevent the indoor vapour drive during hot humid weather. Very hot and humid climates may benefit from an exterior vapor barrier that keeps outside humidity from penetrating into walls.
The reason as you may have read is that when there is a vapour barrier in homes in hot humid climates that rely on air conditioning for human comfort that vapour barrier. Below grade walls and floor slabs transmit ground moisture through concrete walls or slabs. Vapor barriers are a way to keep moisture from getting into the concrete. If you have a framed wall that is adjacent to a concrete foundation wall where the vapor barrier is next to the drywall in front of the studs the fiberglass insulation gets wet and becomes a breeding ground for mold.
Concrete foundations using hydrohalt a high quality water and vapor barrier membrane. This is why a vapor barrier under concrete is essential. Older homes in need of water vapor barriers are also good candidates for water vapor barrier paint. The construction of the wall for instance is vital to the use of a vapor barrier.
If the problem isn t severe painting concrete in the basement with a moisture barrier paint can solve the problem. In these cases a high grade low perm water vapor barrier paint is essential. Moisture vapor barrier primer finish interior latex is a coating designed to reduce the loss of moisture through walls and ceilings. A vapor barrier is not the same as an underlayment.
If you have a concrete floor that s in continuous contact with a source of moisture you re going to have problems. Protect and preserve your below grade architectural surfaces e g. Vapour barrier paint or vapor barrier paint in the u s.