One of the biggest obstacles to keeping a building comfortable and energy efficient is air infiltration and exfiltration. When air is able to enter a building or leave a building, it can cause hot and cold spots throughout the living space. It can also cost significantly more to heat and cool a building when the air is able to move easily in and out. The solution to this problem is air barrier systems.



Air barrier systems are designed to keep outside air from entering a building & to keep the inside air from going out.

When it’s cold outside, warm air remains in the building and cold air stays outside. When it’s hot outside, the opposite: the cool conditioned air will stay in the building and the warm air outdoors stays outdoors. Added benefit to the comfort: substantial energy savings.

Several types of air barrier systems can be employed depending on the building design:

  • Spray Polyurethane Foam
  • Fluid applied
  • Self-adhered
  • Mechanically fastened or sheet good


Learn more about these types of air barrier systems below.


(SPF) This system will provide the insulation and air barrier. It When used on the exterior of the building, it can also provide the vapor barrier and drainage plane to prevent any moisture trying to enter the building.

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Products such as these are applied as a spray. They can be vapor permeable or vapor barriers depending on what type is needed in the building design. They form a monolithic barrier that can keep the air and water where it belongs.


This product is a peel and stick product. It also comes in both vapor permeable or vapor barrier forms. They can be applied over other materials to provide the air barrier that is needed.


This is the most cost effective way to create an air barrier. The material is applied to the walls by conventional techniques. IN order for this to be effective, it has to be installed according to manufacturer’s instructions. There is little tolerance for any mistakes during installation.


Benefits of an Air Barrier System

  • Keeps the cool air in during the summer and the hot air out of a building
  • Keeps the hot air in and the cold air out during the winter
  • Keeps moisture from forming on the walls and other building components
  • Helps maintain relative humidity in the building
  • Helps ensure better air quality
  • Keeps room at a consistent temperature
  • Lowers the cost of heating and cooling the building
  • Cost-effective to install and maintain

Many people do not realize how important an effective air barrier is. To understand why an air barrier should be in place read about the benefits. Installing an air barrier will have a noticeable impact on the comfort of a building. It will allow the building to maintain a consistent temperature at a much lower cost for energy.

At Superior BES, we are Air Barrier System experts.


Another tremendous benefit of an air barrier system is the quality of indoor air. By controlling the amount of air infiltration, the HVAC system is able to better control the moisture and humidity in the air. This ensures comfort in the home as well as reduced the risk of excess moisture contributing to mold and mildew. Also by better controlling the air, it allows the air to be better filtered by the HVAC system. This reduces the amount of allergens that are present in the air inside the building.