Insulation slows heat; it does not stop air. Every hole where a wire, pipe, duct or light fixture passes through your ceiling lets conditioned air leak into the attic and pulls attic air and dust back into your rooms. Sealing those holes first is one of the cheapest, most effective things we do, and it makes the insulation on top work the way it should.
What we seal
Top plates along the tops of interior walls, wire and plumbing penetrations, gaps around flues (with fire-rated materials), duct boots, old recessed lights and the attic hatch itself. We use foam, caulk and fire-rated sealant depending on the gap.
Why it matters in LA
In summer, leaks pull 140°F attic air into your living space. In winter, warm air escapes upward. Either way, your HVAC works harder. Air sealing also means less dust on your furniture, fewer smells from the attic, and quieter rooms.
Best done with insulation
Most gaps are only reachable when the attic floor is clear or the insulation is thin. That is why we air seal as the first step of almost every insulation job. It costs a fraction of the total and is very hard to do afterwards.
Signs you could use this
- Dust lines on carpet edges or around ceiling vents
- Drafts or temperature swings between rooms
- Attic smells reaching the living space
- You are about to add insulation anyway
- The attic hatch has no weatherstrip or insulation
Where we offer attic air sealing
We provide attic air sealing across San Fernando Valley, Burbank, Glendale & Pasadena, Los Angeles & the Westside, Santa Clarita & Antelope Valley and Conejo Valley & Simi Valley, including: