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Attic Air Sealing in South Jersey
Insulation slows heat, but it doesn't stop air. Gaps around lights, pipes, wiring, chimneys and the attic hatch let your heated and cooled air leak straight into the attic. We find them and seal them.
Is this you?
Signs your attic is leaking air
Drafts and cold floors
Cold air is pulled in downstairs as warm air escapes through the attic.
An upstairs that won't cool down
Hot attic air finds its way into the rooms below all summer.
Dark streaks on insulation
Dirty spots in the insulation show where air has been moving through it.
HVAC that never stops
The system keeps running to replace the air that's leaking out.
The process
How we air seal an attic
- 01
Find the leaks
We check wall top plates, recessed lights, plumbing and wiring holes, chases, the chimney and the hatch.
- 02
Seal the small gaps
Holes and cracks are sealed with foam and caulk.
- 03
Block the big openings
Larger openings and chases are covered with rigid board, using fire-rated materials around chimneys and flues.
- 04
Seal the hatch
The attic hatch gets weatherstripping and insulation so it stops leaking.
- 05
Insulate over the top
New insulation goes back over the sealed attic floor.
The difference
Why air sealing comes first
- Often the biggest comfort gain for the money
- Cuts drafts and dust coming from the attic
- Helps your insulation perform as rated
- Easiest to do right when the attic is open or empty
It starts with a free inspection
See what's in your attic before you spend a dollar
About 45 minutes. We go up, photograph everything, measure your insulation and check for leaks, moisture and contamination. You get a photo report and a written price the same day.
Questions
Attic Air Sealing: common questions
Why air seal before insulating?
Insulation slows heat moving through it, but it does not stop air. Sealing the gaps first is usually where the biggest comfort and energy gains come from.
Do I need air sealing if my insulation looks fine?
Often, yes. Gaps around lights, wiring and the hatch are common even under thick insulation. The inspection checks for them.
How long does air sealing take?
It's usually part of a one- to two-day attic job, done before new insulation goes in.
How much does air sealing cost?
It depends on the size of the attic and how many gaps there are. After the free inspection you get a written price for each option.
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Air Sealing near you
Book your free attic inspection
Takes about a minute. Check your ZIP, tell us a little about your home, and we'll call to set a time. Free, with no obligation.
Book my free inspection