Seal Attic Leaks & Boost Home Efficiency

Attic air sealing involves locating and closing off gaps, cracks, and penetrations in your attic to stop air leakage. These small holes often surround plumbing vents, recessed lights, wiring cutouts, and attic hatches. Sealing them prevents heated or cooled air from escaping and unfiltered air from entering. Without sealing, insulation alone cannot perform effectively. WHI uses blower door testing and infrared tools to find and seal leaks using fire-rated caulking and spray foam. This process is often completed in just a few hours and makes a significant impact on comfort and energy use.

Air sealing significantly improves energy efficiency by eliminating uncontrolled airflow between your attic and living space. When warm air escapes in the winter or enters during the summer, your HVAC system must work harder to maintain indoor temperatures. Sealing these leaks reduces energy waste, stabilizes your home’s temperature, and lowers utility costs. When paired with attic insulation, it creates a powerful thermal barrier. WHI specializes in energy audits and sealing solutions that lower annual energy bills and improve indoor air quality.

Yes. Air sealing and insulation work best when installed together. Insulation slows heat transfer, but if air leaks are present, it becomes far less effective. Air sealing blocks airflow so insulation can do its job properly. WHI evaluates both components during your attic inspection. We often recommend sealing leaks before adding or upgrading insulation. Learn more about our attic insulation services for a complete solution.

Drafty rooms, uneven heating and cooling, ice dams on your roof, high energy bills, or dusty indoor air are common signs of attic air leaks. You might also notice hot or cold spots around ceilings or attic access doors. If you’ve added insulation but still have comfort issues, hidden air leaks may be the cause. WHI performs detailed assessments using blower door tests and thermal imaging to locate and correct these issues.

No. WHI’s attic air sealing process is non-invasive and quick. Most projects are completed in a single day. Our team uses targeted tools and safe sealing materials to reach and close gaps without removing large sections of insulation or drywall. We prioritize cleanliness and leave your attic and home in excellent condition. Our technicians are trained to work efficiently and respectfully in finished and unfinished spaces.

Yes. Wisconsin residents may qualify for energy rebates through Focus on Energy when air sealing is completed alongside insulation upgrades. WHI ensures your project meets program criteria and assists with the application process. These rebates can offset costs and increase your return on investment. We stay updated on all local incentive programs to help homeowners get the best value from their energy efficiency improvements.