Open-cell foam insulation in Brentwood CA - a sealed attic and rooms that feel even
Hot upstairs or a room over the garage that never feels right? We seal and insulate with one material, once the prep is done.
I look at your attic myself
I come out, climb into the attic or crawl space and write the estimate myself. Our crew lead then runs the job with a small crew, so the person who saw the problem hands it straight to the people fixing it.
Five years of prep before foam
I learned this trade crawling attics on another crew and started this business in Brentwood in 2021. We're best known for doing attic work in order, with leaks, damp spots and old wiring handled before anything new goes in.
Licensed and insured, estimate in writing
We're licensed and insured, and you're welcome to ask for proof of both before you book. When you're ready, call (925) 503-1068 or use the form below to set up a time for me to come out.
Open-cell foam for Brentwood homes
Open-cell foam insulation is a soft spray foam that insulates and stops air in the same pass, because air doesn't move through it at the usual thickness. In Brentwood it helps homeowners with hot upstairs rooms, drafty bedrooms and attics where the ductwork lives.
The first thing I'd decide with you is whether foam fits your house at all. Foam costs more than loose fill, and in a lot of attics, sealing the gaps and topping up blown-in insulation, loose fill blown through a hose, does the job for less. When your ductwork runs through the attic, I usually lean toward foam under the roof, because it brings those ducts inside the insulated space.
The price mostly comes down to how many square feet get sprayed, how thick the foam goes on, and what has to happen first, like pulling out old, dirty insulation or getting a roof leak fixed. House age and the inches already up there play into that too. The schedule turns on the same prep and on getting your household out for the day, and your written estimate lists the prep alongside the insulation.
How we install open-cell foam insulation
Air sealing and insulation together
Air sealing is closing the gaps around can lights, pipes and the attic hatch before you insulate, so the insulation isn't fighting a draft the whole time. Open-cell foam does that sealing as it goes on, which is the main reason to pay more for it. How well it slows heat, which installers call R-value, depends on how thick it's sprayed, so I write the thickness on your estimate. We also keep it full depth out to the edges, where loose fill tends to run thin.
Planning for moisture in a closed attic
Open-cell stops air but lets water vapor through, so when we turn a vented attic into a closed one that sits inside the house's heated and cooled space, we plan how that moisture gets handled before anyone sprays. That plan is part of the job, not an afterthought. Closing the vents can help another way if your house backs onto open land where wildfire is a risk or sits close to the next house, since federal guidance says embers and ash get into vented attics through those vents.
Crawl spaces, garage rooms and commercial buildings
The room over the garage is a call we get a lot, and foam under the roof or in the walls above it usually settles it. Under a floor, the damp coming up from the ground has to be dealt with first, so we usually lay a crawl space vapor barrier before foam goes up in a crawl space. Property managers call us for commercial insulation on offices and rentals too, and the same order of work applies there.
Get a written estimate for open-cell foam
We reply within one business day to set up a free on-site estimate, with no obligation to book. Have your attic size and any past roof leaks handy, and I'll come out, look myself and put it all in writing.
(925) 503-1068What happens after you call us
You call or send the form
Call (925) 503-1068 or send the form and tell us which rooms feel wrong, how old the house is and whether the roof has ever leaked. We'll set a time for me to come out and look.
I go up and look
I go into the attic or crawl space, check for leaks, damp spots and old wiring, and walk you through what I'd do first. The written estimate lists that prep along with the foam, plus how long your household should plan to be out.
Our crew does the work
Our crew lead runs the job with a small crew, and the foam goes in only after the prep is done. They clean up as they go, and once you're back in the house we walk the finished job with you.
Open-cell foam questions from Brentwood homeowners
How much does open-cell spray foam insulation cost in Brentwood?
Installed open-cell spray foam usually costs about $1.50 to $3.50 per square foot across the US, and that's a national figure, not our price. Your own number depends on the area sprayed, how thick it goes on and any prep your attic needs. The written estimate gives it to you after I've seen the space.
How long do we have to stay out of the house after spray foam?
Plan to be away for the install and the wait after it, because some foam makers recommend 24 hours before anyone returns, though it varies by product. Find a place for everyone, pets included. We'll tell you your product's re-entry time, the point you can come back inside, before the day comes.
Who is allowed to install spray foam insulation in California?
In California, installing insulation for heat or sound control falls under a license the state licensing board sets out for insulation contractors. Someone without a license can only take small jobs within the state's $1,000 limit, and only when no permit is involved and they have no employees. Ask any contractor, us included, for proof of license and insurance.
Do I need to fix my roof before spray foam insulation?
Yes, if your roof has leaked or shows signs of it, the leak gets fixed and the damage repaired before we spray. Foam over a wet roof deck hides the problem instead of solving it. If you've had leaks, budget for that repair ahead of the insulation and tell me about them at the estimate.