Open-Cell Foam Insulation in Santa Barbara CA - a sealed attic planned to dry out
Upstairs rooms running hot under a drafty attic? We spray open-cell foam under the roof deck and plan how the sealed attic dries out.
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- Free in-person estimates.
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Is open-cell foam right for my Santa Barbara attic?
Open-cell foam insulation is a soft spray foam that Santa Barbara Insulation & Spray Foam applies under the roof deck, the wood just beneath your shingles, or inside open walls in Santa Barbara homes, where it holds back heat and seals drafts in the same pass. Sprayed under the roof, it often turns the attic into a sealed space with no vents, and that changes how the attic handles moisture.
Most foam calls I get start with a hot upstairs, a drafty room over the garage or ductwork baking in the attic. Foam costs more than other routes because it seals air while it insulates, so when the ducts aren't up there, sealing the gaps around lights, pipes and the hatch with attic air sealing and topping up with blown-in insulation usually does the job for less. Your price turns on the square footage under the roof, how thick we spray and whether old insulation or a roof leak has to be dealt with first. The schedule turns on those repairs, on any permit your address needs and on when your household can be away for spray day, and my written plan and estimate give you your own figure and the order of the work.
How do you know your attic could use open-cell foam?
Hot rooms upstairs
The bedrooms under the roof stay warm well into the evening, even with the AC running hard. That usually means heat is soaking through thin or uneven insulation, and the longer it goes, the more you pay to cool rooms that never quite catch up.
Ducts in the attic
If you can see ductwork running across the attic, your cooled air travels through the hottest part of the house before it reaches a vent. Until those ducts sit inside an insulated space, part of what you pay for cooling is lost on the way, which shows up on the power bill every summer.
Drafts at lights and hatch
You feel air moving around the attic hatch, the ceiling lights or where pipes come through. Gaps like these let air carry heat right past the insulation, so piling more loose fill on top rarely stops the draft.
Other work that pairs with foam
Commercial insulation
If you manage an office, shop or rental building, we plan insulation for those spaces with the same attention to what has to happen first.
Crawl space vapor barrier
A damp crawl space can still push moisture up into the house after the attic is sealed, so a ground cover underneath is worth checking.
How we install open-cell foam insulation
Before we spray open-cell foam under a roof deck, I ask about past roof leaks and look for stains in the wood, because roof wood can be damaged when it stays wet, and foam sprayed over a leak just has to come back out. Old insulation that's soaked or full of droppings gets removed first for the same reason. Then we work out with you how the sealed attic will dry out, since an attic with no vents still needs a way for moisture to leave, and that goes into the plan before anyone picks up a spray gun. On spray day our installers close off the old vents, cover what needs protecting and spray an even layer under the deck, carrying the same depth out to the edges where coverage usually runs thin.
Foam under the roof is one part of the house. Below the floor, a crawl space vapor barrier keeps ground moisture from rising into the rooms, and I'll look at that space too if your house has one. Property managers also call us for commercial insulation, and we plan those buildings in the same order.
Under the roof deck
This suits houses with ducts or equipment in the attic, because sealing the roofline brings them inside the insulated space. It's also the usual fix for a room over the garage with a sloped ceiling.
Open walls during a remodel
When walls are opened for a remodel or an addition, open-cell foam fills the cavity and seals around wires and pipes as it goes. It fits walls that don't need their insulation to hold back moisture as well.
Request an on-site look at your attic for foam
Send the form and we reply within one business day to set up a free, on-site estimate with no obligation. You can also call (805) 284-9538.
Call (805) 284-9538Why Santa Barbara homeowners call us for open-cell foam
I do the estimate myself
I come out for the first look and the estimate, our installers do the work, and I come back to walk the finished job with you. You get the same person explaining the plan before and checking it after.
Planning jobs in order since 2017
I ran the schedule for a busy company before I learned the trade beside installers, and we started this business in Santa Barbara in 2017. That's why we book leak repairs, removal and foam in the order that keeps the work from coming back out.
Licensed in California and insured
We're fully licensed and insured. California licenses insulation contractors under its contractor law, and you can look up any contractor with the Contractors State License Board before you hire.
Permits checked before we book
The City of Santa Barbara generally requires a building permit to alter, repair or improve a building, and a permit means the work gets inspected against approved plans under current state building codes. Before booking, we check whether the city, the county or the university covers your address, here or in Goleta, Montecito, Carpinteria or Ventura, and when a permit is needed we apply and set up the inspections.
On a foam job, what matters most is fixing what's underneath before anything gets sprayed. Tell us about your attic or call (805) 284-9538 to set up a look.
What happens after you call about open-cell foam?
Call or send the form
You call (805) 284-9538 or send the form, and we set a time for me to come out to your house.
I inspect and write a plan
I look at the roof wood for old leak stains, check the ducts and the insulation already up there, and note anything that has to be fixed first. Your estimate lays out that order, how thick we'll spray, how the sealed attic will dry out and what it costs.
We sort permits and booking
Once you say yes, we handle any permit and book the repairs and the spraying in the right order. You get the spray date early so you can line up a place to stay for the time away covered in the questions below.
Spray day and walk-through
Our installers protect the rooms below, spray the attic and clean up before they leave. Once you're back home, I walk the finished job with you and answer whatever's left.
Common questions
How much does open-cell foam insulation cost in Santa Barbara?
Open-cell foam insulation in Santa Barbara usually costs about $1,800 to $2,800 for a job covering 1,000 square feet at 3 inches thick. That's the going rate around here, not our price, and your number moves with the size of the roofline, the depth sprayed and any removal or repairs that come first. My estimate gives you your own figure.
Is open-cell spray foam a vapor barrier?
No, open-cell foam is vapor open, so it lets moisture pass through and can't serve as a vapor barrier. Where a roof or wall needs its insulation to control moisture too, closed-cell foam, a denser foam that blocks moisture, handles both jobs, and I'll tell you at the estimate which one your space calls for.
How long do we have to stay out of the house after spray foam?
Plan on at least 24 hours away, which is what consumer safety guidance tells residents. Book a place for the whole household before the crew arrives, and we'll confirm the date with you well ahead so it isn't a scramble.
How do I know if spray foam is safe for someone at home with asthma?
Start by reading the product information closely, which consumer safety guidance asks of anyone with asthma, respiratory allergies, skin conditions or a past sensitivity to isocyanates, the chemicals in the foam some people react to. If that raises doubts, the same guidance says to consider other insulation, and I'd rather point you to another option than spray foam into a house it doesn't suit.
Does a sealed attic help keep wildfire embers out?
Yes, an attic with no vents is significantly more fire safe in wildfire areas and where neighboring houses sit close. Ash and embers get into ordinary attics through the vents, so sealing the roofline with foam closes that path.
Does open-cell spray foam need to be covered after it's installed?
Some foams need a thermal or ignition barrier over them, such as a coating or drywall, and some don't. The foam's properties and the code decide it, so it's a fair question for any installer, and I spell out in your plan whether your attic needs one.
Line up your open-cell foam estimate
Call (805) 284-9538 or send the form with your attic's square footage, any roof leaks you know of and whether anyone at home has asthma or allergies, so the first visit covers what matters for your house.