Open-cell foam insulation in Downey CA - a sealed attic and a cooler upstairs
If the upstairs stays hot and the attic feels drafty, we seal the roof space with open-cell foam so the house holds its temperature.
- Licensed and insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Is open-cell spray foam right for my Downey attic?
Open-cell foam insulation is a soft spray foam we put on the underside of the roof in Downey homes, so it seals the air leaks and insulates the attic in one pass, and the rooms below stop soaking up the heat coming through the roof.
Most foam calls I get start with a hot upstairs or the room over the garage that never cools off, and a power bill that climbs every summer. The price moves with how much roof gets foamed, whether old insulation has to come out first through insulation removal, and any roof leak that has to be fixed before we spray, and the schedule turns on those repairs and on when your family can be away while the foam cures. I write all of that into the estimate once I've been up in the attic with you, so you can see which part is driving the number.
How we install open-cell foam insulation
I start by checking the roof for leaks, because foaming the underside of the roof closes the attic up and a leak under foam just stays hidden. Any leak or damage gets repaired first, and if the roof has a history of leaking, that repair comes before we bring in a sprayer. I also look at what equipment sits up there, since sealing the attic changes what a furnace or water heater needs, and I go over with you how long your family will be out of the house while the foam cures. Then our crew pulls out old insulation that's soaked or full of droppings, masks off what shouldn't get foam, sprays the roof deck evenly all the way out to the edges and cleans up.
The same crew handles commercial insulation for property managers and small business owners. If your complaint is cold floors and damp air coming up from below, a crawl space vapor barrier usually does more for you than anything we do in the attic.
Foam under the roof, for attics with ducts
Foam costs more than loose fill, but it seals air while it insulates, so it's the better pick when your ductwork and air handler live in the attic. It brings that equipment inside the part of the house you're paying to cool, which is why it's worth the roof and equipment checks first.
Air sealing and loose fill, for open attics
When nothing important runs through the attic, attic air sealing, closing the gaps around can lights, pipes and the hatch, plus a top-up of blown-in insulation usually gets you there for less. I'll tell you which one I'd choose for your house and why, even if it's the cheaper job.
Open-cell foam insulation permits and houses in Downey
Downey City Hall's Building counter issues permits for alterations and repairs to an existing house, and its list names re-roofs and remodels but not insulation, so that list doesn't settle whether your foam job needs one. When a job does need a permit, we take care of it with the city or county office that covers your address, and if you're not sure about yours, we'll find out with you. Where there's a permit, the city's Building and Safety Division inspects the work against state and local codes, which also covers any roof repair we do first.
A lot of the houses we're in around here have the ducts and furnace up in the attic, so the roof checks come up on nearly every visit. We see the same setups on jobs in Paramount and Long Beach, and we work across the cities around Downey, up to East Los Angeles and Pico Rivera and east into Fullerton and Anaheim.
Why Downey homeowners call Precision Downey Spray Foam Insulation for open-cell foam
I look at your attic myself
I come out to see the job and write the estimate myself, and I show you what's up there before we touch anything. Our trained install crew does the work, and I check it with you before we call it done.
In business since 2017
I learned insulation on someone else's crew before starting this business in 2017, after years at a desk job. That time showed me what happens when fresh material goes over a problem, so we fix things in the right order.
Licensed and insured in California
We're licensed and insured, which matters on a job with spray equipment and chemicals inside your house. California's licensing board covers insulation installers under its C-2 classification, so it's fair to ask anyone you're comparing about theirs.
On a foam job, the roof and the attic equipment get checked before anyone talks about spraying. Send us your details or call (562) 306-5737 and I'll come take a look.
Request a quoteGet a written estimate for open-cell foam in your attic
We reply within one business day, and the on-site estimate is free with no pressure to book. After you send this, we reach out to set a time, I come look at your attic and roof, and you get a written estimate with each step laid out.
What happens after you call about open-cell foam
Call or send a message
Reach us at (562) 306-5737 or through the form, weekdays 6 AM to 9 PM and weekends 8 AM to 10 PM, and we'll set a time to come out. It helps to have ready where you want foam, any roof leak history and what equipment is in your attic.
I look at the attic with you
I go up, check the roof deck and the equipment, and show you what I found and what I'd do first. Your written estimate lays out each step, so you can see what's driving the price before you decide anything.
Repairs and prep before foam
Once you're ready, roof repairs and any old insulation removal come first, and we settle the dates your family will be out of the house. Then our crew sprays the roof deck and cleans up.
Walk the finished attic together
When the foam has cured and it's time to come home, I walk through the finished work with you. You'll see the coverage runs full depth out to the edges, not just in the middle.
Frequently asked questions
How much does open-cell spray foam insulation cost in the Los Angeles area?
Spray foam insulation installed in the Los Angeles area usually costs about $2,700 to $10,800 per job. That range is for spray foam in general, not our price, and where your house lands depends on how much roof gets foamed, any roof repair first and whether old insulation comes out. The free written estimate after I've seen your attic gives you your own figure.
How long does spray foam take to cure before we can move back in?
Some foam makers recommend 24 hours after spraying before anyone goes back into the space, though the time can vary by product. Ask any installer for the time set for the foam they use, and we go over ours with you before we schedule so you can plan where the family, kids and pets included, will stay.
Does a furnace or water heater in my attic change a spray foam job?
Yes, because foaming under the roof seals the attic, so any fuel-burning appliance up there should be a direct-vent, sealed-combustion unit that vents outdoors. It's worth knowing what's in your attic before you choose this kind of job, and I check it on the first visit.
Who can get a building permit for insulation work in Downey?
In Downey, a building permit can be issued to a California licensed contractor or to an owner-builder who lives in the single-family home it covers. If your job needs one, we take care of it, and we'll find out with you if you're not sure.
How do I keep my family safe during a spray foam install?
Plan it ahead with your installer, because the vapors, aerosols and dust made during and after spraying can cause asthma, lung damage, other breathing problems and skin and eye irritation. We go over that plan with you before the job, including when everyone leaves and when they can come back.
Does open-cell spray foam stop moisture in an attic?
No, open-cell foam stops air at typical thicknesses, but water vapor can still move through it. If blocking moisture is the goal, closed-cell foam, the denser kind, may suit that spot better, and I'll tell you which fits your house.
Other work you may need
Commercial insulation
For an office, shop or rental building where comfort and the power bill are your problem to solve.
Crawl space vapor barrier
For a damp or musty crawl space that leaves the floors above you feeling cold.
Downey, CA
Book an open-cell foam attic check
Getting the roof checked and any repairs done before next summer's heat hits the upstairs gives you room to plan the days away.