Air barriers are new construction tools that limit the movement of air and moisture through a wall. They’re part of the building code and are becoming a popular barrier choice amongst the construction industry, including our Robert Haines team, because they’re easier to apply and provide coverage over almost all openings and fastenings.
Fluid Air Barrier
A fluid-applied air barrier stops air and water leakage in almost all building makeups and is suitable for new construction and building restorations. They are applied by spray or roller to provide a solid barrier in above-grade wall assemblies.
Fluid air barriers allow for ease of detailing at wall openings and repair locations. They can adapt to uneven surfaces like brick tiles or electrical conduits.
Sheet Air Barrier
Sheet-applied air barriers are self-adhesive and designed to control air leakage and moisture movement. They are durable and remain flexible in all climates, including cold temperatures. When applied correctly, sheet-applied air barriers will not shrink, sag, dry out, crack or rot.
Once installed, sheet barriers are permanent; they adhere to almost all surface materials and will not rot or decay over time.
Vapor Air Barrier
Vapor barriers reduce the rate at which water vapor moves through your wall. They help control moisture in basements, ceilings, crawlspaces, floors, walls, and slab-on-grade foundations.
Whether or not you need a vapor barrier depends on the climate and the construction of your building. Newer builds can benefit from vapor barriers, but already existing buildings in need of extensive remodeling do not adhere well to vapor barriers.
In cold climates, vapor air barriers are installed toward the interior of the building, and in hot or wet climates they are installed toward the exterior.