Attic air sealing

Gaps around plumbing stacks, wiring penetrations, and the attic hatch let conditioned air leak out and hot attic air leak in — no amount of insulation fully makes up for it.

Signs of air leakage

Insulation alone doesn't stop moving air

  • Noticeable drafts or temperature swings between rooms
  • Visible gaps around plumbing stacks, wiring, or the attic hatch
  • An AC system that runs longer than it should to hold temperature
  • Dust or insulation fibers settling near ceiling fixtures or vents
  • An attic hatch that isn't sealed or insulated
Bearmark technician air sealing attic penetrations
Attic prepped for air sealing with foam-sealed eaves visible
What we seal

The gaps insulation can't fix on its own

During your attic inspection, we identify the visible air-leakage points that matter most — plumbing and wiring penetrations, gaps around the attic hatch, and other openings between the attic and the living space below. These get sealed as part of the recommended work, not left as an afterthought.

Air sealing is most effective when it's paired with the right insulation and ventilation for your attic, which is why we evaluate all three together during the inspection.

Why air sealing from us is different

Part of the inspection, not an upsell

Identified during inspection

We point out visible air-leakage opportunities as part of every attic inspection, not as a separate pitch.

Financing available

Flexible financing options may be available for qualifying attic performance projects.

Workmanship warranty

Every air sealing job is backed by our workmanship warranty on the work performed.

Find the leaks working against your AC

Free inspection, no obligation, financing available if you need it.

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