How to Seal Attic Cracks
Spray foam insulation is one of the leading causes of energy waste and temperature inconsistencies in the home. Even small cracks and gaps can let conditioned air escape, forcing your HVAC system to work harder and increasing energy bills. Sealing these openings before adding insulation ensures maximum performance and comfort year-round.
A well-sealed attic prevents heat loss in winter, keeps out humid air in summer, and reduces drafts that make rooms uncomfortable.
Finding and Sealing Air Leaks
Start by inspecting areas where walls meet the attic floor, around pipes, vents, and wiring penetrations. These are common spots for air leaks. Use a flashlight or smoke pencil to detect airflow. Once identified, seal small gaps with caulk and larger ones with expanding spray foam.
According to Air sealing energy-efficiency guidelines, sealing before insulating maximizes energy savings and helps insulation perform at full capacity. Don’t forget to weatherstrip attic doors or access hatches.
After sealing, consider adding insulation to enhance energy retention. Properly sealing attic cracks is one of the most cost-effective upgrades homeowners can make for lasting comfort and efficiency.
Gonz Insulation
504 Walnut St, Farmington, MO 63640, USA
573-203-7055
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