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

Insulation contractor in Concord, CA - attics sealed first, then insulated

J&S Vacaville Insulation Services is an insulation contractor based in Vacaville, CA. We drive to Concord homes and buildings to seal attic gaps, add or replace insulation, and fix drafty rooms and cold floors.

Get an estimate(707) 452-3285
White spray foam insulation fills the roof of a timber-framed room, with exposed rafters and windows below.

How Concord houses look from the attic hatch

Most of our Concord work is in single-family homes and duplexes, along with buildings that property managers call us about. The calls sound like the ones we get closer to home. People tell us about a hot upstairs, a drafty room, a power bill that keeps climbing, or the room over the garage nobody wants to sleep in. We come down from Vacaville for these jobs the same way we head out to Napa and Vallejo.

What decides the job is what's already up there. That means how many inches of old insulation you have, whether it's clean, and how many gaps are open underneath it. Ductwork in the attic or a crawl space under cold floors changes the plan, so I look before I price anything.

Insulation work we do for Concord homes and buildings

Most Concord calls start in the attic, so that's where most of our work starts too. I come out first and look at what's up there and what's under the floors. Then I write up only the work your house needs, in the order it needs it: sealing the gaps, clearing out bad material, then adding insulation. Foam, crawl space and wall work come in when the house calls for them. Property managers get the same walk-through for their buildings.

  • Spray foam insulation

    Spray foam earns its higher cost when ductwork runs through the attic or the space is too tight for loose fill. If sealing and loose fill would do the job for less, we'll tell you.

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  • Attic insulation

    Lots of attics we open have thin coverage at the edges and open gaps underneath. We seal first, keep the eave vents clear and bring the coverage up evenly.

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  • Blown-in insulation

    Blown-in insulation is loose fill blown through a hose, and it's how we top up most attics that still have some old material. We blow it deepest where the old layer is thinnest.

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  • Home insulation

    Some houses have a hot room upstairs and cold floors downstairs at the same time. We look at the whole house and put the fixes in order, starting with the one that matters most.

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  • Insulation removal

    Insulation that got soaked or filled with droppings has to come out, because new material laid on top keeps the problem in your house. We vacuum it out and clean up before anything new goes in.

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  • Crawl space insulation

    Cold floors usually mean the insulation under them has fallen or was never put in. We put it back between the floor joists and fasten it so it stays up.

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  • Wall insulation

    Some exterior walls have little or nothing inside them, and you feel it as a draft at the outlets. We fill the wall cavities through small holes and patch the holes when we're done.

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  • Air sealing services

    Air sealing means closing gaps before we insulate. It comes first because insulation can't stop air blowing through a hole, so we close the openings around pipes, wires and other spots where air slips between rooms, walls and floors.

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  • Basement insulation

    When a house has a basement, the framing along the top of its walls is usually where the cold gets in. We seal and insulate that edge, plus any walls that need it.

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  • Closed-cell foam insulation

    Closed-cell foam is a dense foam that blocks moisture, so it suits crawl spaces and rim joists where damp air is part of the problem. It costs more, and we use it only where that moisture control earns the price.

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  • Open-cell foam insulation

    Open-cell foam is lighter and softer, and it fills rooflines and odd framing where batts won't sit right. We use it where the space needs a seal but not a moisture block.

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  • Commercial insulation

    Property managers call us about buildings where tenants complain about hot or drafty spaces. I walk the building and write up what each space needs, and we plan the work around the people using it.

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  • Crawl space vapor barrier

    Bare dirt in a crawl space puts moisture into the air under your floors. We lay a vapor barrier over the ground so the insulation above it stays dry.

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  • Vapor barrier installation

    Some walls and floors need a layer that keeps moisture out of the insulation. We put it on the right side of the wall or floor, because a barrier in the wrong place can trap damp air.

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  • Attic air sealing

    Gaps in the attic floor are usually as much to blame as thin insulation when the room over the garage or the upstairs bedrooms run hot. We seal around can lights, the hatch and the tops of the walls before adding any insulation.

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  • Retrofit insulation

    Retrofit insulation is for finished houses where we don't want to open walls or ceilings. We work through the attic, the crawl space or small holes, so you keep your drywall and paint.

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What sealing and insulating work looks like up close

These photos show the kind of work involved in sealing and insulating attics, walls and crawl spaces. They illustrate the trade, not a particular house or job in Concord.

  • 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 worker in protective clothing sprays expanding foam insulation into a wooden-framed surface beside a blue tarp.

Working in Concord: permits, licenses and what moves your price

Concord has its own permit office and its own business license rule, and both shape how a job gets planned. Here's how we handle them, and what decides your price and schedule.

Who makes the permit call in Concord

Permits in Concord go through the city's Permit Center. The city keeps a list of work on single-family homes and duplexes that needs a permit. It names roofs, water heaters, windows and air conditioning, but it doesn't name insulation, so the list doesn't settle your job either way. The Permit Center does. If your job needs a permit, the inspection becomes part of the schedule.

At the estimate I'll tell you how permits work for your job. If one's needed, we apply for it and set up the inspection ourselves, so you're not chasing paperwork. If you're replacing the air conditioner or windows around the same time, the city's list says that work needs a permit of its own, so mention it when I'm there.

  • Permits for Concord homes and duplexes come from the city's Permit Center.
  • We handle the application and book the inspection when a permit applies.
  • An inspection date, when there is one, shapes when the job wraps up.

What to check, and what moves the price

Before you hire anyone, ask for two things, a California contractor license and a Concord business license. The state's Contractors State License Board requires a license when a job needs a building permit or uses extra workers. It also requires one when the job totals $1,000 or more in labor and materials, so ask anyone who bids for their license number. Concord's business license rule is in the questions below.

Your price comes down mostly to what we find in the attic. The biggest swing is whether the old insulation can stay or has to come out first, and removal adds time as well as cost. After that, it's how much area needs work, whether foam makes sense, and how easy the attic or crawl space is to get into. The written estimate gives you your figure.

  • Ask every bidder for their state license and their Concord business license.
  • Removing old insulation first is the biggest swing in what you pay.
  • Removal and a permit inspection both add time to the schedule.

Get a free on-site insulation estimate for your Concord home

Call (707) 452-3285 or send the form with a few lines about your house and what's bothering you, and we'll reply within one business day. I come out to Concord to look at the attic and anything else involved, and you get the estimate in writing. There's no obligation, and you can ask me then which permits apply to your job.

(707) 452-3285

What we usually find in attics and crawl spaces

These are the things we check on almost every house, because they decide whether new insulation does its job. Most of them get fixed before any new insulation goes in.

  • Old insulation that's soaked or soiled

    The first thing I check is how many inches are already up there and what shape they're in. Clean material can stay and be topped up. If a roof leak soaked it or it's full of droppings, it comes out, because new insulation on top just keeps the problem.

  • Gaps around lights, pipes and the hatch

    Can lights, pipes, wires and the attic hatch all leave openings into your rooms. If we insulate over them without sealing, the air from your living space keeps pushing through, and the insulation ends up fighting a draft it can't stop.

  • Eave vents buried under insulation

    Eave vents let the attic breathe. When insulation gets blown over them, the attic holds moisture, and sooner or later it shows up on the framing. We set baffles at the eaves before we blow anything in. Baffles are short channels that hold the insulation back from the vents.

  • Deep in the middle, thin at the edges

    Plenty of attics have deep insulation in the middle and almost none out by the eaves. That's backward, because the edges sit right over where your ceiling meets the outside walls. We bring the edges up first so the coverage is even all the way across.

  • The room over the garage

    The room over the garage picks up heat and cold from more sides than the rest of the house, so it's often the first room people complain about. We check the floor over the garage, the walls and the attic above it, because the fix is usually in more than one place.

How we decide what your house actually needs

I sold insulation before I ever installed it, and I saw how easy it is to sell the big job. Here's how we work so that doesn't happen to you.

We fix the right first thing

Most attics don't need the most expensive fix. Usually the right first step is sealing the gaps and topping up the loose fill that's already there. That stops the draft and fills in the thin spots for a lot less than foam. I'd rather tell you that and lose the bigger sale than talk you into work your house doesn't need.

Foam has its place. It costs more, but it seals air while it insulates. When the ductwork runs through the attic, that's usually where foam earns its price, because the ducts end up inside the sealed space. I'll show you what I'm seeing up there and tell you which way I'd go, and why.

  • I write every estimate myself

    I come out to look at every job, Concord included, and I write the estimate. You get it in writing, so you can see exactly what we plan to do and compare it with anyone else's before you decide.

  • I check the work before we leave

    Our installers do the work, and I check it before we finish. I'm looking for the things that usually go wrong on insulation jobs, like a gap left open, a vent buried or the edges left thin.

  • Licensed, insured, in business since 2017

    We're licensed and insured, and we opened in Vacaville in 2017. That's nine years of attics, crawl spaces and drafty rooms, with calls from homeowners and from property managers looking after their buildings.

  • Satisfaction guaranteed

    Satisfaction guaranteed. That's our promise, and it's why I'd rather fix the smaller thing right than sell you the bigger one. If you want to know what's going on in your attic, call (707) 452-3285 or send the form, and I'll come out and take a look.

Questions about insulation work in Concord

These are the questions homeowners ask us about insulation work in Concord, from cost and permits to licenses and time in the house. If yours isn't here, call and ask.

How much does attic insulation cost in Concord, CA?

Your cost comes down mostly to whether the old insulation can stay or has to come out, and you get your figure in a free written estimate after I've seen the attic. Sealing gaps and topping up clean loose fill is usually the smaller bill. Removal, foam and hard-to-reach spaces raise it, as covered in the permit and pricing notes above.

How do I find out if my insulation job needs a permit in Concord?

Ask the city's Permit Center, because the city's permit list for homes and duplexes doesn't name insulation either way. The city's Permit Center page also lets you look up zoning, see which permits a project requires and estimate permit fees, so you can check before you ask for bids. When I come out, I'll tell you how permits work for your job.

Does an insulation contractor from outside Concord need a Concord business license?

Yes. The city requires a business license from anyone doing business in Concord, including state-licensed contractors and businesses whose office is outside the city. That rule covers us, since we're based in Vacaville, and it's fair to ask any contractor bidding your job about it.

How long does an attic insulation job take in Concord, and when can we go back inside?

With sealing and loose fill, you usually don't need to leave at all, because the work happens up in the attic. Spray foam is different. It has a re-entry time, which is how long you stay out while it cures, and the foam maker sets it. I'll go over what that means for kids and pets before we start. How long the crew is up there depends on the attic's size and access, and on whether old insulation comes out first, and I'll tell you that at the estimate.

Service areas

We're based in Vacaville and work in Concord, Fairfield, Davis, Napa, Vallejo, Richmond and the other cities listed here, plus plenty nearby. If your city isn't listed, call (707) 452-3285 and ask.

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(707) 452-3285Get an estimate