What is Air Sealing?
The purpose of Air-sealing is stop air leakage and movement through basement/crawl space, exterior walls, band boards and attic/roofs areas.
Why is this important?
The goal is to seal the house up from unwanted air flows.
Studies have shown that a house without air-seal losses 20% of heating and air conditioning to the outdoors!
How is Air Sealing done?
Air-sealing is sealing all the cracks in the exterior walls and attic areas. Typically a combination of caulk and spray foam is used depending on the size of the gap and application.
To learn more about Air-Sealing read this Build America, cut and paste this link:
http://apps1.eere.energy.gov/buildings/publications/pdfs/building_america/ba_airsealing_report.pdf