Performance Bell Spray Foam Insulation
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Crawl space insulation in Bell CA - warmer floors, done in the right order

Cold floors in winter and a crawl space nobody's looked at in years? We check what's under there first, then insulate it right.

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White vapor barrier sheeting covers the floor and lower walls of a crawl space, wrapping around support columns beneath exposed joists.
  • Licensed and insured.
  • Free on-site estimates.
  • Expect a reply within 1 business day.

Two ways we insulate a crawl space

  • Batts under the floor

    Batt insulation fits between the floor joists and presses up against the subfloor, so the floor itself becomes the warm line. It suits a crawl space that stays vented.

  • Spray foam on the walls

    Foam goes on the crawl space walls and seals air as it insulates, so the whole space joins the house. It suits a crawl space you're sealing up.

Will insulating my crawl space fix my cold floors?

Crawl space insulation in Bell puts batts or spray foam in the floor over your crawl space or along its walls, so less heat escapes into the open space below and the floors above feel warmer in winter.

If the floors in your back rooms go cold every winter, the space under them is usually part of it, because an uninsulated floor over a crawl space can be one of the main places a house loses heat. The price turns on how big the crawl space is, how easy it is to move around in, whether we insulate the floor or the walls and whether the framing needs repairs first. The schedule turns on those same repairs and on a permit, if your address needs one. I'll give you the price in writing after I've been under the house.

Crawl space insulation, repairs and sealing

I don't decide what goes in until I've been under the house. What I find in the framing, the vents and anything burning gas down there tells us what the job is.

  • Framing check first

    I check the floor framing for rot and bug damage, and any repairs get done before insulation goes in and covers them up.

  • What's down there

    I ask what's down there, especially anything that burns gas, because that decides what we can safely close up.

  • Vents talked through

    Closing the vents changes the whole space, so we talk it through with you before we touch a single one.

  • Gaps sealed before insulation

    Holes around pipes and wiring get closed first with our air sealing services, so cold air can't slip around the insulation.

  • Insulation in tight

    Batts or foam go in tight with no gaps, and if a room still runs cold, we'll check its wall insulation too.

Crawl space repairs and insulation, done in order

I grew up on a farm where you fixed what broke, and I spent years on insulation crews around Los Angeles before starting this business in Bell in 2020. We do the prep and sealing first, and I'll tell you straight when a crawl space isn't ready.

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  • I look at it myself, first and last

    I come out to see your crawl space myself and tell you straight if it isn't ready. Our installers do the work, and I check it before we wrap up.

  • Licensed and insured in California

    We're licensed and insured. California's licensing board treats installing insulation as its own trade, so it's fair to ask any crew you're weighing about their license.

  • A safe crew and a clean house

    Crawl space work can track dirt and old insulation through your rooms. I want our crew working safe and your house left clean when we pack up.

What happens after you call about your crawl space

We plan the work around what's under your house, so nothing gets covered until the framing and vents are sorted out, and we set the work days around your schedule.

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or call (213) 329-1866

  1. Call or send the form

    Call (213) 329-1866 or use the form, and tell us how old the house is and what's bothering you, like cold floors in the back rooms.

  2. I come look underneath

    I come out, look the crawl space over and walk you through what I find in the framing and around the vents.

  3. Your price in writing

    You get the price in writing, with the repairs that have to happen first set apart from the work that can wait.

Wall insulation fills the spaces between exposed wooden studs, with plumbing pipes running through the framed wall.

Get a free on-site estimate for your crawl space and floors

Tell us your address, whether the crawl space is vented and whether anything down there burns gas. We'll get back to you within one business day to set up a free on-site estimate, with no obligation.

(213) 329-1866

Crawl space questions we hear in Bell

How much does crawl space insulation cost around Los Angeles?

Insulating a crawl space in the Los Angeles area usually costs about $1,700 to $7,500 for the whole job. That's the area's going rate, not a quote from us, and a job that needs framing repairs or foam on the walls tends to sit toward the higher end.

What is the best way to insulate a crawl space, the floor or the walls?

Federal energy guidance calls air sealing and insulating the crawl space walls best practice in every climate, though in some cases the floor above becomes the insulated line instead. If your ductwork runs down there, I lean toward the walls, because foam seals air as it insulates and keeps the ducts on the warm side. Foam costs more, so in an empty crawl space that stays vented, batts in the floor usually make more sense.

Can I just close my crawl space vents to keep the floors warm?

No, closing the vents alone isn't enough, and it can make things worse. Federal guidance warns that sealing them by themselves can raise moisture, and it can turn deadly if a furnace or water heater that vents naturally sits down there. The California Energy Commission also requires a vapor retarder, a plastic cover over the dirt floor, in any crawl space without vents, because it cuts moisture and keeps condensation off the insulation.

Does crawl space insulation need any maintenance?

No, the state energy commission says insulation needs no maintenance once it's in. It also helps with comfort and cuts down on sound, so your budget goes to the install and nothing after it.

How do I get my crawl space ready for insulation?

Clear out stored boxes and loose junk so the ground cover can be laid or patched with no gaps. Leave the rest to us, since the framing check and any repairs come before insulation goes in.

Is spray foam safe to use in a crawl space in Bell?

It can be, when it's covered the way the code calls for. Some foams can give off toxic or flammable gases when heated, so most codes require a covering that resists heat or flame over foam, though some products are tested to lower that risk. Federal guidance also says to check with local authorities that the rigid foam you pick meets code, and we make that check before it goes in.

Crawl space insulation in Bell and the cities around it

In Bell, the city's Building and Safety Division issues building permits, reviews plans and inspects the work, and the city asks owners to call (323) 588-6211, extension 2611, to find out whether a job needs a permit. We make that check for your address before we start, and if your job needs a permit, we handle pulling it.

We're based in Bell and work in the cities around it, and since permit rules aren't the same from one to the next, we make the same check on jobs in East Los Angeles and Walnut Park. A lot of what we crawl under around here is older houses where the space below hasn't been touched in years, so we expect old gaps and stored boxes to work around.