Performance Bell Spray Foam Insulation
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Closed-cell foam insulation in Bell CA - a rigid layer that seals out air and moisture

Drafts, damp framing or a hot room over the garage? Closed-cell foam seals the gaps and insulates in one dense, hard layer.

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A worker sprays white foam insulation onto the roof framing of an attic.
  • Licensed and insured.
  • Free on-site estimates.
  • Expect a reply within 1 business day.

Where we use closed-cell foam

  • Under the roof deck

    We spray the underside of the roof so the attic sits inside the insulated space, which makes sense when your ductwork or air handler lives up there.

  • Crawl spaces and rim joists

    In a crawl space or along the rim joist, the band of wood where the floor meets the foundation, closed-cell foam seals air and slows damp from below.

Is closed-cell spray foam the right insulation for my house?

Closed-cell foam insulation is a dense spray foam that sets up hard and lets almost no moisture through, so on a house in Bell it closes the air gaps and insulates in one layer instead of two separate jobs.

Most folks call about foam because of a hot upstairs, cold floors over the crawl space or a power bill that keeps climbing. In a lot of Bell attics, sealing the gaps and topping up the blown-in, the loose fill already up there, does the job for less, and foam earns its price when your ductwork lives in the attic or the space needs a layer that holds back moisture. Old insulation that's soaked or full of droppings has to come out first through insulation removal, or the problem just stays under the new layer. The price moves with how many square feet we spray, how thick it goes, how hard the space is to get into and how much prep comes first, and the schedule turns on that prep and the time your household spends out of the house. I give you your own number in writing at the estimate.

Closed-cell foam, from prep to cleanup

Closed cell costs more than open-cell foam, so I tell you up front where it's worth it. If anyone at home has asthma or allergies, I want to know before we pick it.

  • Find the problem first

    I look for roof leaks, damp wood and plumbing drips first, because foam sprayed over a problem just seals it in.

  • Clear out and mask off

    Old insulation that's in the way comes out, and we mask off vents, floors and anything else the foam shouldn't touch.

  • Spray even, edge to edge

    We spray in even passes around pipes, wires and the hatch, keeping full depth out to the edges where thin spots usually show up.

  • Trim, clean up, haul off

    We trim foam that bulged past the framing and haul off the scraps, and building owners get the same order of work on commercial insulation jobs.

Closed-cell foam done in the right order

I grew up on a farm where you fixed what broke, then 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 if a space isn't ready for foam.

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  • I see it before and after

    I come out to look at the job myself, and once our installers finish spraying I look it over before we wrap up, so thin edges or missed gaps get caught.

  • Licensed and insured in California

    We're licensed and insured. The state licensing board treats anyone who installs insulation to control heat or sound as an insulation contractor, so that's the license to ask about when you compare bids.

  • Your satisfaction, guaranteed

    I want my crew working safe and your house left clean when we pack up, and if anything about the finished job bothers you, tell me.

What happens after you call about closed-cell foam in Bell?

We plan a foam job around the people who live in the house, so we know about pets, health concerns and work schedules before we set anything.

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or call (213) 329-1866

  1. Call or send the form

    Call (213) 329-1866 or fill out the form with the space you're thinking about, and we'll set up a time to come out to your place.

  2. A look at the space

    We walk the attic, walls or crawl space together, and I tell you what I find, what has to be fixed first and what can wait.

  3. Your price in writing

    I give you the price in writing, then you decide, and if you go ahead we set the spray days around your household.

A worker in protective coveralls fits yellow fiberglass batts between attic floor joists.

A written price for closed-cell foam and the prep it needs

Tell us which areas you want insulated, about how big they are and whether anyone at home has asthma or allergies. We reply within one business day to set up a free estimate at your place, with no obligation.

(213) 329-1866

Questions about closed-cell foam

How much does closed-cell spray foam insulation cost in Bell, CA?

Closed-cell spray foam in the Los Angeles area usually costs about $3,000 to $4,700 for 1,000 square feet sprayed 3 inches thick. That's the area's going rate, not our quote, and I'll put your own number in writing after I see the space.

Why does closed-cell foam cost more than open-cell foam?

Closed-cell foam expands less than open cell, so it takes more material to fill the same space, and you should expect it to price higher for the same area. What the extra buys you is a rigid foam that's far harder to compress, which counts in a crawl space or on a roof deck.

How long does it take before we can go back in the house after spray foam?

Plan to be out while the foam is sprayed and until it has cured and the house is aired out and cleaned, which is what the EPA advises for everyone living there and for other trades on the job. Some makers recommend waiting 24 hours after a professional spray before moving back in, though that varies by product. I'll tell you the re-entry time, when you can come back in, for the foam we're using before we set the date, so you can line up a place for the household and pets to stay.

Is spray foam insulation safe if someone in my house has asthma or allergies?

The EPA says people with a history of skin conditions, respiratory allergies or asthma should carefully review product information and may want to consider alternatives. Do that review before you settle on spray foam, and bring it up at the estimate so we can go over other ways to insulate the space.

What is the best time of year to get spray foam insulation?

The best time is when the temperature and humidity suit the foam, because both strongly affect how it cures. The EPA suggests getting clear guidance from your contractor and the foam maker on the right season and weather, so ask, and I'll tell you what the product calls for when we pick the days.

What is the best way to have repairs done around spray foam later?

Tell any plumber or electrician the foam is there before they start, because the EPA advises maintenance workers not to heat or grind spray foam, since it can give off toxic emissions. That goes for anyone working in the attic, walls or crawl space down the road.

Closed-cell foam insulation in Bell and nearby cities

For construction in Bell, the city tells owners to call (323) 588-6211, extension 2611, to find out if they need a permit. Bell builds to the California building codes with state energy rules on top, and the state's energy code sets standards for the materials in a house's walls, roof and floors based on which climate zone the house sits in. Permit rules aren't the same in Bell, the other cities and the county areas, so we check with the office for your address before we start, and if your job needs a permit, we pull it.

Around Bell we see a lot of older houses with raised floors over a crawl space, thin insulation that's settled over the years and rooms over the garage that run hot. We find the same kinds of houses on jobs in East Los Angeles and Walnut Park, and the order of the work doesn't change.