Insulation Contractor in Norwalk, CA - Gaps Sealed First, Then Insulated
Performance Bell Spray Foam Insulation is an insulation contractor based in Bell, working in Norwalk homes and buildings. We insulate attics, walls and crawl spaces, seal the air leaks first, and clear out old insulation that's past saving.
- Licensed and insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
What Norwalk attics need from an insulation crew
Norwalk is mostly neighborhoods of one-story houses built in the decades after the war, with apartments, shops and offices along the bigger streets. Many still have the insulation they were built with, or a thin layer someone added years ago that's packed down now. We drive over from Bell for this work, the same as we do in Downey next door and down in Long Beach.
On these houses the job usually starts in a low attic. I check how many inches are up there, what shape it's in and where air gets through from the rooms below, because insulation laid over open gaps is money thrown away. The price moves with the size of the space, whether old material has to come out, how much sealing it needs and whether you go with loose fill or foam. The schedule turns on the same things, plus a permit if your address needs one. At the estimate I explain what I see and put the price in writing. Low rooflines here make the edges the hard part, so that's where we take our time filling to full depth.
Insulation work we do in Norwalk
Spray foam insulation
Where ductwork runs through a Norwalk attic, spray foam seals and insulates in one pass, and it's worth the extra cost there.
Explore Spray foam insulationAttic insulation
On a one-story house the attic does most of the work, so we seal it, then build the coverage up evenly out to the eaves.
Explore Attic insulationBlown-in insulation
Blown-in insulation, loose fill sent through a hose, reaches the tight corners under the shallow roofs on many tract houses here.
Explore Blown-in insulationHome insulation
For the whole house, I walk the attic, walls and floors and tell you what needs work now and what can wait.
Explore Home insulationInsulation removal
Older attics here often hold insulation that's packed flat, water-stained or full of droppings, and we clear it out before anything new goes in.
Explore Insulation removalCrawl space insulation
Raised-floor houses get cold floors from the crawl space, so we insulate under the floor once the ground down there is dry.
Explore Crawl space insulationWall insulation
Stucco walls on older Norwalk houses are often empty inside. We fill them through small holes instead of tearing the walls open.
Explore Wall insulationAir sealing services
Drafty rooms usually trace back to leaks between the house and the attic, and we close those before anything else goes in.
Explore Air sealing servicesBasement insulation
Basements are rare in Norwalk, but where a house or building has one, we insulate the walls with moisture in mind.
Explore Basement insulationClosed-cell foam insulation
Closed-cell foam, a dense foam that blocks moisture, suits damp crawl spaces and spots where water has been getting into the framing.
Explore Closed-cell foam insulationOpen-cell foam insulation
Open-cell foam is softer and lighter. It fits attic rooflines and inside walls where you want air sealed and noise cut down.
Explore Open-cell foam insulationCommercial insulation
Shops, offices and rental buildings along Norwalk's busier streets get the same order of work, with the crew scheduled around your tenants.
Explore Commercial insulationCrawl space vapor barrier
A heavy plastic sheet over the dirt in a crawl space keeps ground moisture out of the floor framing and the insulation above it.
Explore Crawl space vapor barrierVapor barrier installation
In older homes and rentals here, the right vapor barrier in walls and floors keeps damp air from soaking into the insulation.
Explore Vapor barrier installationAttic air sealing
Attic air sealing closes the holes between your rooms and the attic, so the air you pay to heat or cool stays downstairs.
Explore Attic air sealingRetrofit insulation
Landlords and owners of older Norwalk houses can add insulation to finished walls and ceilings without gutting the rooms to do it.
Explore Retrofit insulation
What older Norwalk houses ask of insulation
I started this business in Bell in 2020 after years on insulation crews around Los Angeles. We do the prep and sealing first, and I'll tell you straight what your attic, walls or crawl space needs, even when the answer is that it isn't ready yet.
I look at the job myself
I come out to see your house before you get a price, and I look over our installers' work before we wrap up and leave your place clean.
Gaps sealed before insulation goes in
We close the gaps around can lights, pipes and the attic hatch first, so the new insulation isn't fighting a draft the day it goes in.
Ruined insulation comes out first
If what's up there is soaked or full of droppings, we pull it out before adding anything, because new material on top just keeps the problem in your attic.
Get a written insulation estimate for your Norwalk home
Send your address and what you're noticing, like a hot room or cold floors, and we'll reply within one business day. I come out for a free on-site estimate and give you the price in writing, with no obligation.
Norwalk insulation questions we get
How much does it cost to insulate a house in Norwalk?
The price comes down to the size of your attic or crawl space, what has to come out first, how much air sealing it needs and which material you pick. Sealing the gaps and topping up loose fill usually costs less than foam, and it's usually the better buy unless your ductwork runs through the attic, where foam earns its price. I price it once I've seen the space.
Does an insulation contractor in Norwalk need a California license?
Yes, if the job needs a building permit, if the contractor has workers on it, or if labor and materials together come to $1,000 or more. That's the rule from the state's Contractors State License Board, and it covers Norwalk like the rest of California. We're licensed and insured, and I'm glad to give you our license details when I come out.
Can someone without a license do a small insulation job in Norwalk?
Only a very small one. The state board's exemption covers jobs under $1,000 in labor, materials and all other costs combined, with no permit needed, no employees on the job and no advertising as a licensed contractor, and since that limit went up from $500 to $1,000, older advice you find online may be wrong. Owners working on their own property, by themselves or with their own paid employees, may also be exempt.
Do I need a permit to insulate my house in Norwalk?
We check that for your address before any work starts, because permit rules aren't the same in Bell, Norwalk and the county areas around them. If your job needs a permit, we handle pulling it, so you don't have to sort it out yourself.
How long does attic insulation take, and when can my family and pets go back inside?
With loose fill you can usually stay home, but with spray foam you'll be out for the re-entry time, the wait the foam maker sets before people and pets come back in. How long the crew is in your attic turns on its size and whether old material comes out first, and I'll tell you both the work time and any time out of the house at the estimate.
What causes a drafty house or a hot room over the garage?
Usually it's air leaking through gaps, not just thin insulation. In older houses we find open gaps around fixtures and the hatch, insulation piled deep in the middle and thin at the edges, and eave vents buried so the attic can't breathe and moisture shows up in the framing. We fix the gaps and vents before adding more, because insulation over a leak doesn't stop the draft.
Other cities we work in, and yours
Pick another city below to see its page. If yours isn't listed, call (213) 329-1866 and ask, because we work in more places than these.