Air sealing services in Vacaville CA - fewer drafts and appliances that still breathe
Drafty rooms or a hot upstairs usually mean air leaks. We check your appliances first, then seal the gaps so the rooms stay comfortable.

Why does my house still feel drafty with insulation in the attic?
Air sealing services in Vacaville close the cracks, holes and gaps where air leaks in and out of your house, mostly through the attic floor, so rooms stop feeling drafty and the house holds the heat or cool you're paying for.
Insulation slows heat, but air slips right past it through gaps around can lights, pipes, wiring and the attic hatch. That's why the upstairs stays hot, the room over the garage never feels right and the floors run cold even when there's plenty of insulation up there.
The price moves with how many leaks there are, how deep they're buried, how easy the attic is to crawl through and whether you're adding insulation in the same visit. The schedule turns on those same things plus any permit your job needs, and the written estimate I send after seeing your attic gives you the figure for your house.
- We seal around can lights, plumbing and wiring holes, wall tops and the attic hatch.
- Gaps around the chimney or flue get metal and high-temperature sealant, not ordinary foam.
- Crawl space openings under the floor get sealed too when cold floors are the complaint.
What happens when you call us about air sealing in Vacaville?
From your first call to the final walk-through, you deal with me and our installers. Here's how an air sealing job runs, start to finish.
Call us or send the form
Call (707) 452-3285 or use the form, and we'll set a time for me to come out. Have your house's age handy, plus whether the attic already has insulation and which appliances burn gas or wood.
I check the attic myself
I come out myself, get into the attic or under the house, and look for anything that has to be dealt with before sealing, like old knob and tube wiring, vermiculite, a bath fan venting into the attic or a roof leak. Before I leave I tell you what I'd do first and why, even when it's the smaller job, and the written estimate follows.
Our installers seal the house
Our installers do the work on the day we set, sealing the leaks we went over with you at the estimate. If your job needs a permit, we apply for it and set up the inspection ourselves.
We walk the job together
I look over the finished work with you before we call it done, including the spots that were buried under old insulation. You'll see what got sealed and what got left open on purpose.
What air sealing looks like inside an attic
These photos show the kind of spots that leak in most attics, around lights, pipes, wiring and the hatch. They're general examples of the trade, so you know what to look for up there.
A worker in protective coveralls sprays loose white insulation through a hose across an attic floor beneath exposed rafters.
An unfinished room has pale spray foam insulation between exposed wooden studs and across the ceiling.
A kneeling worker sprays pink blown-in insulation through a hose across an unfinished attic floor.
Exposed attic rafters and walls are coated with pale foam insulation, with ducts and framing visible.
A worker in protective coveralls vacuums loose attic insulation through a hose among exposed wooden rafters.
Spray foam insulation covers the underside of a crawl space floor around a large metal duct and exposed wood joists.
A written air sealing estimate after I've been in your attic
Send the form or call (707) 452-3285 and you'll hear back within one business day to set a time. I come out for a free on-site estimate, and the written price comes with no pressure and no obligation.
(707) 452-3285Questions Vacaville homeowners ask about air sealing
These are the questions we hear most about air sealing in Vacaville, from cost to testing. If yours isn't here, ask me when I'm up in your attic.
Is air sealing worth it for a house in Vacaville?
For most drafty houses, yes, because leaks left open make rooms uncomfortable, push your heating and cooling to work harder and run up the power bill. They also let in moisture that can damage the wood framing and lead to mold, which costs far more to fix than the gaps did.
Can I air seal my attic myself?
You can caulk the easy gaps, but do-it-yourself sealing tends to miss the small, hard-to-find leaks, especially in an older attic where layers of insulation cover them. If your attic already has insulation in it, that's where a pro who knows where to dig pays off, along with the appliance check we do first.
What is the best way to air seal an attic that already has old insulation?
If the old insulation is dry and clean, we move it aside, seal the leaks underneath and put it back or top it up. If it's soaked or full of droppings, it has to come out first with insulation removal, because new material over a bad layer just keeps the problem.
How do I get ready for a blower door test?
Close your windows and outside doors and turn off the dryer and any bathroom fans, because that's what you may be asked to do, and the tester may need to get into the attic or crawl space. A blower door test measures how tight your house is, so ask whether your job includes one. Depending on the work, state rules may also require HERS testing, a Home Energy Rating System check, which properly permitted work triggers when it's needed.
How much does air sealing cost in Vacaville?
I give you a price only after I've been in your attic, because the number of leaks and how deep they're buried change the job more than the size of the house does. Sealing on its own usually comes in below sealing with a top-up or foam, and Solano County's energy page points residents to BayREN for rebates on home insulation, heating and cooling, so check what's offered before you book.
Does a small air sealing job need a licensed contractor in California?
If the job is over $1,000 or needs a permit, yes, because the state licensing board only lets an unlicensed person do minor work up to $1,000 when it needs no permit and they have no one working for them on it. We're licensed and insured, so the size of your job doesn't change who can do it.
Air sealing services in Vacaville and nearby cities
The City of Vacaville's express permit list names attic insulation and HVAC, not air sealing, so we'll check at the estimate whether your job needs one and apply if it does. Houses in Fairfield and Dixon hide the same leaks.




