AIRSEALING AMERICA, LLC
AirSealing is the critical first step in reducing energy usage in a building.
Plumbing and electrical penetrations through the home envelope allow conditioned interior air (heated or air conditioned) and unconditioned exterior air to flow in and out of your home. In addition, the top plates of every wall that intersects with the attic must be sealed as well. Read what the Boston Globe's Rob Robillard has to say in this 3/1/15 column
Sealing up the gaps is as simple as airsealing in Concord or draft reduction in Weston and surrounding towns.
AirSealing and insulating the attic access, either a pull down stair or an actual staircase, is one of the most important steps in improving the energy efficiency of your home. In this video, the top stair into the attic is sealed and insulated, and the constant upflow of warm air through the adjoining balloon wall is in evidence (a balloon wall is an old style wall cavity that frequently ran from the cellar to the basement with no firebreaks).
From this video, it is easy to see why convection is called the express train of heat loss in a home.
The rim joist is the entry point for most winter time air leaks into the house. Warm air leaks out through the attic; cold air leaks in through the rim joist. Watch the video for our solution.