Many homes that have existing insulation in their attic would benefit from an air seal before installing new insulation. Garrity Insulation in athens ga recommends this to maximize utility savings as it will prevent conditioned air from escaping the home through attic space leaks and slow the “stack/chimney effect.” Air sealing also allows for proper ventilation in the attic and prevents moisture problems like ice dams during winter.

Attic air sealing involves the application of spray foam, caulking and/or cellulose insulation to produce an airtight boundary between attic and living spaces. This stops conditioned air from escaping the house and also helps prevent warm air from rising during summer to push cooled air down around the windows and doors.

The Benefits of Proper Air Sealing in Attics

The primary benefit of attic air sealing is reduced energy bills. Without an airtight attic, conditioned indoor air easily escapes through gaps around chimneys, wall penetrations, and recessed lighting in the attic floor. This requires heating and cooling systems to work harder to keep the home at a comfortable temperature, driving up energy bills.

Air sealing can stop drafts and improve comfort by keeping a consistent temperature throughout the home. It can also reduce indoor pollutants by minimizing the infiltration of outdoor pollen, allergens, and pests. Air sealing is also a great option for two-story homes to help prevent the “stack” effect, which can cause the upper floors of the home to feel colder than the lower levels.

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