Air leakage is a major problem for both new and existing homes and can:

- Contribute 30 percent or more to heating and cooling costs
- Create comfort and moisture problems
- Draw in pollutants such as radon and mold
- Occur in openings which also serve as a prime entry for insects and rodents

To reduce air leakage effectively requires a continuous air barrier system to create a tight building envelope. An air barrier also minimizes air currents through insulation, helping maintain R-values. The air barrier should minimize air leakage through the building envelope - the boundary between the conditioned portion of the home and the unconditioned area.

To achieve this we use the following materials.

- Caulk
- Spray Foam
- Weatherstripping
- Foam Board
- Plywood
- Drywall
- Housewrap
- and many other materials