Air sealing your San Diego area home helps improve your comfort and lower your energy bills. You can locate air leaks yourself by holding a lit incense stick up to common leaky spots. When the smoke from the incense stick wavers, you’ve located an air leak. Use the following tips to learn which materials to use and where to look for leaks.
Air Sealing Materials
The materials you’re going to need to air seal your home are caulk, weatherstripping, and expanding spray-in foam. Silicon caulk is a great choice since it is resistant to heat damage, shrinking, freezing, and cracking. Weatherstripping is available in many materials, including foam, silicon tubing, and tension V-strips. Spray-in foam is best for larger cracks and holes.
Sealing Windows, Doors and Walls
Drafts near windows and doors are good indicators of air leaks. Use a thin line of caulk to seal window frames and rattling glass. Plastic tension V-strips and foam weatherstripping are great for sealing window jams.
Check sealing on all exterior doors. Remove dry, cracked, or damaged materials and install foam or silicon tubing weatherstripping. Door sweeps prevent drafts beneath doors.
Sealing Your Attic
Plan on spending extra time for sealing your attic. Heat naturally rises and exploits the smallest air leaks. Seal the following areas that pertain to your home:
- Attic hatch: Use foam weatherstripping to seal the attic hatch.
- Piping: Spray-in foam is used to seal gaps around piping protrusions.
- Flue: Again, make sure the spray-in foam you use for sealing gaps around the flue is fire resistant.
Basement and Crawl Spaces
- Exterior wall protrusions: Look for piping, cables, dryer vents, and sidewall venting that needs sealing. Use spray-in foam for these purposes.
- Foundation: Look for cracks in the basement and crawl space walls and foundation. Use spray-in foam. If the foam expands beyond gaps and cracks, you can cut it away so that it’s smooth.
- Air ducts: Seal duct leaks with an aerosol sealant followed by heat-resistant metal tape.
If you have questions about air sealing your San Diego area home, call Sherlock Heating & Air Conditioning today for more information.
Our goal is to help educate our customers in the greater San Diego and San Marcos, California area about energy and home comfort issues (specific to HVAC systems).
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