Insulation contractor in Downey, CA - attics sealed before they're filled
Performance Bell Spray Foam Insulation is an insulation contractor working in Downey, CA. We seal the gaps, clear out bad old material and insulate attics, walls and crawl spaces in houses, apartments and small buildings across the city.
- Licensed and insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Insulation work in Downey's houses and apartments
We're an insulation contractor based in Bell, CA, and Downey is a short drive southeast, past South Gate and right next door to Norwalk. Most of what we see here is single-family houses, with a good share of apartments and condos mixed in, so our calls come from homeowners and landlords alike. A lot of these houses have been standing a long time, and their attics show it, with old batts flattened over the years and loose fill that's deep in the middle and thin out at the eaves.
What moves the price is how much is already up there, whether any of it has to come out and how much sealing the gaps take, and the schedule turns mostly on removal and on what the city says about a permit for your address. You get your own number when I come out. On an older house, that usually means fixing what's under the insulation before adding more.
Insulation services for Downey homes
Spray foam insulation
Spray foam fits the Downey houses where ductwork runs through the attic, because it seals the air and insulates in one pass.
Explore Spray foam insulationAttic insulation
A hot upstairs or a cold hallway usually starts in the attic. We seal the gaps first, then bring the depth up evenly, eaves included.
Explore Attic insulationBlown-in insulation
When an older Downey attic has settled, we top it up with blown-in, loose fill sent through a hose, after the gaps are closed.
Explore Blown-in insulationHome insulation
When a Downey house is drafty in several rooms, we look at attic, walls and crawl space together and say what can wait.
Explore Home insulationInsulation removal
In older attics, insulation that got soaked or filled with droppings comes out first, because new material laid over it just buries the problem.
Explore Insulation removalCrawl space insulation
Cold floors in a raised-floor Downey house usually trace back to the crawl space. We make sure it's dry underneath before we insulate.
Explore Crawl space insulationWall insulation
Older stucco houses in Downey often have empty or thin walls, which is why a bedroom stays cold even with a good attic.
Explore Wall insulationAir sealing services
In Downey apartments and condos, gaps around pipes and wiring let air move between units. Air sealing, closing those gaps, comes before any insulation.
Explore Air sealing servicesBasement insulation
Not many houses here have a basement. When yours does, we insulate the walls so damp doesn't get trapped against the framing.
Explore Basement insulationClosed-cell foam insulation
Closed-cell foam, dense foam that blocks moisture, suits the room over a Downey garage and damp spots where loose fill would sag or soak.
Explore Closed-cell foam insulationOpen-cell foam insulation
Open-cell foam costs less than closed-cell and fits a dry attic roofline in Downey when the ductwork needs to sit inside the seal.
Explore Open-cell foam insulationCommercial insulation
For Downey building owners, we insulate shops, offices and multi-unit buildings, and we plan the work around tenants and business hours.
Explore Commercial insulationCrawl space vapor barrier
If the dirt under an older Downey house stays damp, a vapor barrier goes down first, so the floor insulation above it stays dry.
Explore Crawl space vapor barrierVapor barrier installation
A vapor barrier isn't needed everywhere in a Downey house. We put one where damp actually reaches the insulation, so we're not trapping moisture.
Explore Vapor barrier installationAttic air sealing
A Downey attic that's deep in insulation can still leave the rooms below drafty. Sealing the gaps from above usually fixes that for less.
Explore Attic air sealingRetrofit insulation
Retrofit work adds insulation to a Downey house that's already lived in, going through the attic and small wall holes instead of open walls.
Explore Retrofit insulation
What Downey's older houses ask of insulation
I spent years on insulation crews around Los Angeles before starting this business in Bell in 2020. We do the prep and sealing before any insulation goes in, and I'll tell you straight when a job isn't ready yet.
I check the job at both ends
I come up into the attic or crawl space myself and show you what's there before anyone talks price. Our installers do the work, and I look it over before we wrap up.
Sealing comes before insulation
Gaps around can lights, pipes and the hatch get sealed first, and eave vents stay clear, so the new insulation isn't fighting a draft or trapping moisture in your framing.
A clean house and a safe crew
We cover floors and the path to the attic, keep the crew working safe up there, and clean up before we leave, because you still live in the house.
Get a written insulation price for your Downey home
Tell us what you're noticing, like a hot upstairs or cold floors. We'll get back to you within one business day to set up a free, no-obligation visit, and I'll come out and give you the price in writing.
Downey insulation questions, answered
How do I find out if attic insulation needs a permit in Downey?
Ask the city's Building and Safety Division, which issues Downey's building permits and handles plan checks and inspections. The city's own wording is that generally any new construction, addition, alteration or repair to an existing building needs a permit, and its examples are things like re-roofs and remodels, not insulation by name. We check with the office for your address before we start, and if your job needs a permit, we pull it.
Can I pull my own permit for insulation work on my Downey house?
Yes, if you live in the single-family house the permit is for, since the city issues building permits to California licensed contractors and to owner-builders living in the home. For duplexes, apartments, condos, townhomes and commercial buildings, only a California licensed contractor can hold the permit, which matters if you're a landlord. Either way, the city's permit information says a permit goes void if work doesn't start within 12 months or stops for 180 days.
Does an insulation contractor need a Downey business license?
Yes, the city requires a business license for any business working in Downey, including contractors whose offices are outside the city. A contractor pulling a permit there needs a current Downey business license, and it can be paid for when the permit is issued. That covers us too, since we're based in Bell.
How much does attic insulation cost in Downey?
Most of the price comes down to the material you pick and how hard the space is to work in. Foam costs more than loose fill because it seals air while it insulates, but for most attics, sealing the gaps and topping up loose fill does the job for less, unless your ductwork runs up there. I'll measure how many inches you already have and give you your number when I come out.
How long does attic insulation take, and can we stay home?
With blown-in loose fill you can usually stay home, and the crew's time in the attic depends mostly on how much has to come out and how much sealing it needs. Spray foam is different, because everyone, kids and pets too, stays out until the re-entry time, the wait before it's safe to come back in, has passed. I'll give you both times for your house at the estimate.
Which building code and climate zone apply to insulation in Downey?
Downey works from the current California Building Code along with the city's own local changes, and the city puts most of Downey in energy code climate zone 8, with the area north of Vista Del Rio in zone 9. Those zones are for building rules, not weather records, so the zone your house sits in can change what the code asks for. We plan the job to the code and zone for your address.
Near Downey but not listed? Call us
Pick your city below to see what we do there. If yours isn't on the list, call (213) 329-1866 and ask, since these aren't the only cities we work in.