J&S Vacaville Insulation ServicesJ&S Vacaville Insulation Services(707) 452-3285
J&S Vacaville Insulation Services
(707) 452-3285Get an estimate

Licensed Insulation Contractor in Vacaville CA - Even temperatures upstairs and down

J&S Vacaville Insulation Services seals and insulates attics in Vacaville and the cities around it, including Fairfield and Dixon. We also pull out tired old insulation and insulate crawl spaces under cold floors.

Tell us about your project(707) 452-3285
Owner does every estimate
The person who quotes your job has done the work.
Sealing before insulation
We close the air gaps first, then add insulation.
Homes and whole buildings
We insulate houses and the buildings property managers run.
Honest about need
If your attic is in good shape, we'll say so.
White spray foam coats the underside of a large timber roof, filling spaces between exposed trusses.
  • Licensed and insured.
  • Free in-person estimates.
  • Expect a reply within 1 business day.

Our insulation contractor services in Vacaville, CA

J&S Vacaville Insulation Services is an insulation contractor in Vacaville, CA, and we handle 16 services, from attics and walls to crawl spaces and commercial buildings. Most calls start with a hot upstairs, a drafty room over the garage or a power bill that keeps climbing. The price moves with how much insulation is already up there and what shape it's in, whether old material has to come out first, and how many gaps need sealing. The schedule turns on the same things, plus how easy the attic or crawl space is to get into. I look at your house in person and give you a written estimate for your own job.

  • Spray foam insulation

    Spray foam insulates and seals air in one pass, so it fits rooflines, rim joists and attics where the ductwork runs. It costs more than loose fill, and we'll go over whether it's worth it for your house at the estimate.

    Explore service

  • Attic insulation

    Hot upstairs, or a room over the garage that never feels right? We check what's already up there, then seal and insulate the attic in the order that gets it right.

    Explore service

  • Blown-in insulation

    Blown-in insulation is loose fill blown through a hose, and it's the usual way to top up an attic that has settled or gone thin. It fills in around framing and wires without tearing anything up.

    Explore service

  • Home insulation

    This is for the whole house, when more than one room feels off and you want one plan for the attic, walls and floors. We start where your house is losing the most.

    Explore service

  • Insulation removal

    When old insulation is damaged or past saving, we pull it all out and clean the space before anything new goes in. It's also the way to start over in an attic that's been patched one layer at a time.

    Explore service

  • Crawl space insulation

    Cold floors in winter usually trace back to an open crawl space. We insulate under the floor so the rooms above stay warmer.

    Explore service

  • Wall insulation

    Do closed walls have to be torn open to insulate them? Often not, because we can fill many of them through small holes and patch them afterward.

    Explore service

  • Air sealing services

    Air sealing means closing the gaps that leak air through your house before any insulation goes in. Insulation alone won't stop moving air, so this is what actually settles down a drafty room.

    Explore service

  • Basement insulation

    We insulate basement walls and rim joists so a finished room or storage space below grade stays drier and easier to heat.

    Explore service

  • Closed-cell foam insulation

    Closed-cell foam is a dense foam that blocks moisture as well as heat. We use it where damp is part of the problem, like a rim joist or a crawl space wall.

    Explore service

  • Open-cell foam insulation

    Open-cell foam is softer and lighter, and it fills odd-shaped cavities and quiets sound between rooms. It's a good fit for inside walls and rooflines where moisture isn't the worry.

    Explore service

  • Commercial insulation

    Offices, shops and rental buildings need the same sealing and insulation as a house, on a bigger scale. We plan the work around the people using the building.

    Explore service

  • Crawl space vapor barrier

    We lay a heavy plastic sheet over the dirt under your house to keep ground moisture from rising into the floor framing. It also makes the crawl space cleaner to get into later.

    Explore service

  • Vapor barrier installation

    Where does a vapor barrier belong? On the side of the wall or floor where moisture would do harm, so water doesn't end up trapped in the framing, and we place it based on how your house is built.

    Explore service

  • Attic air sealing

    Attic air sealing closes the openings between your living space and the attic, where warm and cool air slips through. It comes before any new insulation goes in.

    Explore service

  • Retrofit insulation

    Retrofit insulation adds insulation to a house that's already built and lived in. We work through the attic, the crawl space or small wall openings so you don't have to gut a room.

    Explore service

Insulation work, up close

These photos show the kinds of insulation work we do, from loose fill in attics to foam in walls and crawl spaces. They're here so you can picture the materials before we talk about your house.

A worker in protective gear sprays white foam insulation between wall studs.
Loose-fill insulation covers an attic floor beneath exposed wooden roof trusses.
White spray foam seals the underside of a roof between exposed wooden rafters.
A crawl space has a white plastic vapor barrier beneath ducts and pink insulation between the joists.

What you get when we look at your house

Most of what sets us apart happens before any insulation goes in. It comes down to who looks at your house, what we check for and what we're willing to tell you.

What to fix first comes before what to sell

I sold insulation before I ever installed it, and I saw how easy it is to sell the big job when a house needed something smaller. So when I'm up in your attic, my question is what to fix first, not how big a job I can write. I'd rather lose the sale than talk you into work your home doesn't need.

I left sales for an install crew because I wanted to be the one up in the attic, and I learned the work by doing it. That's why I'm the one who comes out to look at your house. When I see thin insulation at the edges or vents buried under loose fill, I know what caused it and what fixing it takes.

  • Checked before we quote

    Before I write a number down, I look for wet spots, old wiring and insulation that's soaked or full of droppings. Laying new material over any of that keeps the problem in your house, so the plan you sign covers what's really up there.

  • Permits and inspections handled

    When your job needs a permit, we apply for it and set up the inspection ourselves. Inside Vacaville city limits that goes through the city's Building Division, and at the estimate I'll tell you how permits work for your job.

  • When the answer is wait

    Sometimes the right call is to have a roof or plumbing leak fixed before any insulation goes in. I'll tell you that at the estimate, even when it means there's no job for us yet.

  • Open seven days a week

    You can reach us Mon–Sun from 7 AM to 10 PM, so a call about a hot upstairs doesn't have to wait for a weekday lunch break. Call (707) 452-3285 or use the contact form and tell us what's going on.

What happens after you call us

Every job runs through the same four steps, whether it's one attic or a whole building. Here's who you'll talk to, who comes out and what you'll have in hand before any work starts.

  1. Call or send the form

    Call (707) 452-3285 or fill out the contact form with a little about the house and what's bothering you, like a hot upstairs, cold floors or a power bill that keeps climbing. We'll get back to you within one business day to set a time for me to come out.

  2. I come out and look

    I come out myself and get up into the attic or under the house, because that's where the answer is. Before I leave, I'll tell you what I'd do first and why. Then you get a written estimate, free and with no obligation to go ahead.

  3. Our installers do the work

    Our installers do the job on the day we've set. If old insulation has to come out, that happens first, then the sealing, then the new insulation, so each layer goes into a clean, closed-up space. We cover the path to the hatch and clean up when we're done.

  4. We look it over together

    When the crew finishes, I look the work over with you before we call it done. You'll see what went in, where it went and how it lines up with the written estimate. Satisfaction guaranteed.

A Vacaville insulation company, licensed and insured since 2017

J&S Vacaville Insulation Services opened in Vacaville in 2017, and for nine years we've worked in attics, walls and crawl spaces in this part of the state. We're licensed and insured. Attics are what we're best known for, and most of our calls come from homeowners with drafty rooms, a hot upstairs or insulation that's flattened out over the years.

The state's Contractors State License Board requires a license when a project needs a building permit, uses any additional workers, or has contracts totaling $1,000 or more in labor and materials. Plenty of insulation jobs meet at least one of those, so ask anyone you're comparing whether they hold one. There's more on who we are and how we work if you want it.

  • Based in Vacaville, CA 95688, and working in the cities around it.
  • Removal, foam, blown-in insulation and vapor barriers, all from one company.
  • Email hi@vacavilleinsulation.com if writing it down is easier than a call.

Insulation work in Vacaville and the cities around it

J&S Vacaville Insulation Services is based in Vacaville, CA, and the 12 cities below each have their own page, including Fairfield and Davis. We work in plenty of other cities nearby too, so call if yours isn't listed.

Questions about estimates and insulation work in Vacaville

These are the questions people ask most before they book an estimate. If yours isn't here, call or send the form and I'll answer it when I come out.

Do you charge for an insulation estimate in Vacaville?

No, estimates are free and there's no obligation to hire us. I do every one in person, so plan on someone being home while I get into the attic or crawl space.

What should I do to get ready for an insulation estimate?

Clear a path to the attic hatch or crawl space door, and that's mostly it. If you know how old the house is or you've noticed a wet spot, a hot room or a jump in the power bill, tell me, because it shows me where to look first.

How long will the insulation crew be in my attic?

It depends on the size of the attic, how much old material comes out and how much sealing it needs, so I'll give you a real answer after I've been up there. The written estimate lays out the order the work goes in.

Do we have to leave the house during insulation work?

Sometimes, and it depends on the material. With loose fill blown into the attic, most families stay home, while spray foam comes with a re-entry time, the wait before kids and pets come back inside, and we'll tell you that window before work starts.

Why do you seal the attic before adding insulation?

Insulation slows heat, but it doesn't stop moving air, so we close the gaps first. Gaps around can lights, pipes and the attic hatch keep leaking air through any new layer laid over them, and the room below stays drafty.

How do I compare written insulation estimates from different contractors?

Compare what each one covers, not just the bottom line. Check whether air sealing is included, whether old insulation comes out or gets covered over, what material goes in and the R-value it's aiming for, which tells you how well it slows heat, and whether the eave vents stay clear.

Tell us about the job you have in mind

Send the form with your address and what's going on, or call (707) 452-3285, and we'll reply within one business day. I'll come out, look at the house and send a written estimate, with no obligation to go ahead.

(707) 452-3285
(707) 452-3285Get an estimate