By: Martin Berry
Many air leaks and drafts in your home are easy to find. You feel them every day and are the places where we stuff rags and rugs and apply tape and plastic. Common areas include window framing, doors jambs, molding and plumbing/electrical lines. Holes hidden in attic spaces, behind kneewalls, in basements, and crawl spaces are usually much larger problems, costing you energy dollars every day.
Identifying and sealing these leaks with blocking, house wrap, caulk, spray foam, or weather stripping will have a significant impact on your comfort and efficiency. A trained technician, using advanced diagnostic tools, such as a blower door, infrared cameras, and pressure meters, can quantify the air leakage in your home and identify specific improvement opportunities. A reduction in air leakage correlates directly to improved comfort and efficiency.
Air sealing investments are generally the lowest cost/highest in energy improvement projects and are often overlooked. Air sealing in attic spaces is important to prevent mold and moisture problems.
Proper identification sealing of air leaks will:
• Eliminate uncomfortable drafts
• Reduce energy consumption
• Prevent moisture & condensation problems
• Improve your home’s indoor air quality.
Installing thermal insulation (fiberglass, cellulose and spray foam) to attics and wall cavities is not enough! Air sealing should always be the first step in a building shell improvement project.
For more information on this subject, check out the Energy Star website: https://www.energystar.gov/ia/home_improvement/home_sealing/AirSealingFS_2005.pdf
Or this short video: https://www.youtube.com/watch?v=k80ZM0UJH94