What is Air Sealing?
Air sealing is an energy efficiency home upgrade that every homeowner should be aware of. The service is done in the attic and crawl space to ensure there are no air leakages that cause energy loss and increasing utility bills. Air sealing is essentially blocking gaps and cracks around light fixtures, vents, pipes, and electrical wiring to prevent air transfer. Many homeowners may think it is not a big of a deal but when combining all these gaps and cracks together it’s like having a 2 ft x 2 ft window open in the house which results in a huge energy loss. Experts saying “Air sealing is the secret sauce to make people more comfortable in their homes”. New building codes like “Title 24” requires the contractor to air seal the attic and crawl space in new construction projects as well as attic and crawl space retrofitting.
How Do I Know if My Home Needs Air Sealing?
Not sure you need to worry about air sealing? Try this quick at-home test – if your home experiences any of the following problems, it might be a good candidate for an attic air-sealing project:
- Drafty rooms
- Hot and cold rooms, including uneven temperatures between rooms
- High heating or cooling bills
- Ice dams in the winter
- Dry indoor air in the winter
- Dust (especially in rooms directly below the attic).’
Six Commonly Overlooked Places in Your Home That Could Benefit from Air Sealing
- Attics – When your attic isn’t properly insulated, you may experience excessive air leakage and energy loss as a result. Air sealing can keep cold air in during the summer and retain warm air throughout the cold season.
- Exhaust Fans and Vents – Any fans or vents that have access to the outdoors can be culprits for leaking air, but an insulation barrier can help reduce airflow and remedy the situation.
- Recessed Lighting – These types of fixtures are sometimes installed without proper insulation, especially when not put in place by a professional. However, keep in mind that air sealing around recessed lights should never be a DIY project to ensure safe results.
- Attic Hatches – Extra weatherstripping should be added around the frame of your attic hatch to help reduce energy loss.
- Air Ducts – Poorly sealed air ducts allow conditioned and heated air to escape to other spaces. These should always be air sealed to increase efficiency.
- Basements and Crawlspaces – Foam sealing of pipes, electrical wires and other areas in basements and crawlspaces can help eradicate air infiltration
Air sealing in the attic
Air sealing around the air duct system and HVAC vents
Air sealing around light fixtures
Air sealing around electrical wires, pipes and electrical boxes
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