Air Barrier

An air barrier is a material or system installed in a building’s exterior structure to control the flow of air in and out. Its main purpose is to prevent drafts, reduce energy loss, and improve indoor comfort by stopping unwanted air leaks. It also helps protect the building from moisture, which can cause damage or mold growth. Typically made of specialized membranes or paints, air barriers are installed behind walls, ceilings, or floors. Proper use of an air barrier enhances energy efficiency, maintains indoor air quality, and extends the lifespan of the building.