Foundation Wall Vapor Barrier

Thus installing vapor barriers on wall surfaces must.

Foundation wall vapor barrier.

Foundation wall vapor barrier system protect your basement by installing a proper foundation wall vapor barrier. Not every wall does. Every potential gap or seam in the liner is sealed to prevent any. An encapsulation system is a heavy duty cord reinforced liner that is fastened and sealed to the foundation wall.

After the insulation is in place you will want to add a vapor retarder sometimes called a vapor barrier if you need one. Concrete pros recommend vapor barriers even in dry climates because soil always harbors moisture which the drier air will pull out. We used thermax brand available through lumberyards of polyethylene vapor barrier because it doesn t require an additional fire barrier. Whether or not you need a vapor retarder hinges on three main factors.

A common but incorrect approach by contractors that attempt to install an encapsulation system. This not only insulates the walls but also keeps rising dampness in the concrete from getting into the crawlspace. Vapor barrier ran up foundation wall and stapled to sill plate. Water vapor can pass through building materials in several ways including direct transmission and by heat transfer but studies suggest that fully 98 percent of the moisture transfer through walls occurs through air gaps including cracks around electrical fixtures and outlets and gaps along baseboards.

Cover exposed foundation walls with 1 1 2 in. The science of moisture movement. Before finishing your basement you must consider putting a vapor barrier on the foundation walls this often neglected feature is critical to successfully finishing the basement because it.