Closed-cell foam insulation in Hawthorne CA - air sealed and insulated in one layer
Hot rooms upstairs, a drafty room over the garage or a damp crawl space? We seal the gaps and insulate in one dense layer.
- Service
- Closed-cell foam insulation
- Call
- (424) 307-8033
What are the signs your house needs better insulation?
The upstairs never cools off
The room over the garage or the bedrooms upstairs stay hot into the evening, even with the AC running. That usually means thin insulation and air leaking through the ceiling, and you keep paying for it on the power bill every summer you wait.
Drafts around the attic hatch
You can feel air moving around can lights, pipes or the hatch, or you see dark streaks on the insulation near them. Those are gaps letting attic air into the house, and more insulation on top won't stop the draft until they're sealed.
A musty crawl space
There's a damp, musty smell under the floor, or the old insulation down there sags and looks stained. Moisture is getting in, and the longer it sits the more it soaks into insulation and framing, so we find the source before anything new goes in.
Is closed-cell spray foam worth it for your Hawthorne house?
Closed-cell foam insulation is a dense, rigid spray foam that's hard to crush, and at its usual thickness it blocks almost all moisture vapor while it slows heat and closes air leaks. Around Hawthorne we use it where a house fights heat and damp at once, like an attic with ducts in it, the room over the garage or a crawl space.
Most people who call about foam have a hot room upstairs or a summer power bill they're tired of, and they've heard foam is the answer. Sometimes it is, but it's the priciest choice, so the price turns on how many square feet we cover, how thick the foam goes, how hard the space is to reach and whether old material needs insulation removal first. The schedule depends on that prep, any repairs we find and the time your household spends away while the foam cures, and your written estimate spells out both.
Details to note before an estimate
- Rough square footage of each area
- Attic, walls, crawl space or garage ceiling
- Inches of old insulation already there
- Anyone at home with asthma or allergies
How we install closed-cell foam insulation
First I lay out why closed-cell costs more and where it earns that, which is usually an attic with ductwork running through it, a damp crawl space or a wall that's already open. If your ducts aren't up there, attic air sealing and a top-up of blown-in insulation usually do the job for less, and I'll tell you so. When foam fits, we choose the product and plan your time away around its instructions. If anyone at home has asthma or skin or breathing allergies, I hand you the product details to read before you decide, because EPA advises people with those conditions, or an earlier allergic reaction to isocyanates, one of the foam's ingredients, to review them carefully and maybe weigh other insulation. On the job we fix what's underneath first, pull out insulation that's soaked or full of droppings, seal around can lights, pipes and the hatch, and spray even coverage all the way to the edges, where attics usually come up thin.
Closed-cell isn't the only foam we spray. Open-cell foam insulation costs less and suits spots inside the house where damp isn't the worry, and we bring the same approach to commercial insulation for owners of commercial buildings around Hawthorne.
Related insulation services
Open-cell foam insulation
Worth a look if you want the air sealing of spray foam in walls or under the roof for less money, and moisture isn't a concern.
Commercial insulation
For offices, shops and warehouses that need insulation planned around tenants, business hours and how the building is used.
What happens when you call about closed-cell foam in Hawthorne?
Call or send the form
You call (424) 307-8033 or fill out the form, and we get back to you to set a time for me to come out.
I come out and look
I come out myself and check the attic, walls or crawl space, including what's already there and any leaks or wiring that need attention. You get a written estimate with the price, the product we'd use and anything to fix first, so you know exactly what you'd be paying for.
We seal, spray and check
On the day, our crew protects your floors and belongings and seals the leaks before any foam goes in. I check the work and walk the finished job with you before we call it done.
Questions before you book closed-cell foam
How much does closed-cell spray foam insulation cost per square foot?
Installed closed-cell spray foam usually costs about $3 to $5 per square foot across the US, which is the going market range and not our quote. Your own number turns on the size of the space and the prep it needs, so we measure in person and put the price in writing.
How do I choose between closed-cell and open-cell spray foam?
Pick closed-cell when you need a lot of insulation in a tight space or moisture is part of the problem, and open-cell when neither is true. Closed-cell costs more mainly because it expands less and takes more material to fill the same space, and for that you get a rigid foam that typically rates R-6 per inch, R-value being how well insulation slows heat.
How long do we have to stay out of the house after spray foam insulation?
Plan to be out while the foam goes in and until it has cured and the house has been aired out and cleaned, which is what EPA guidance asks of the people living there and of other trades. For professional high-pressure spray foam, some manufacturers recommend waiting 24 hours before moving back in, though it varies by product. EPA guidance also calls for sealing off the heating and cooling vents during the work so contaminants stay out of the rest of the house, and we tell you which product we're using so you can book your time away to match.
Who can install spray foam insulation in California?
The Contractors State License Board has a class for this work, describing an insulation and acoustical contractor as one who installs any insulating material for temperature or sound control. EPA also advises checking a spray foam contractor's insurance and licenses before you hire, and we're fully licensed and insured, so ask us for those details at the estimate.
Do California energy rules apply when I insulate an older home in Hawthorne?
They can, because the state's energy standards cover substantial additions and alterations to existing homes, not just new ones, and they include a section for adding insulation to existing attics. The California Energy Code splits the state into climate zones and ties its rules for a home's outer shell to the zone the house sits in, so these statewide rules shape attic and remodel work in Hawthorne and the cities around it where we work. We sort out how they bear on your project when we plan it.
Does closed-cell foam make walls stronger in an earthquake?
It can add strength, since one building guide reports that closed-cell foam in frame wall cavities substantially increases racking strength, a wall's resistance to being pushed out of square, and calls that an advantage for building in earthquake zones. I'd count it as a side benefit when the walls are already open, not the main reason to choose foam.
Get a written closed-cell foam estimate for your house
We reply to every call and message within one business day to set a time. I come out myself, look at the space and give you a free written estimate with the price and the plan, including anything that should be fixed first. There's no pressure to book.
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Find out if closed-cell foam fits your house
Call (424) 307-8033 or use the form, and have the areas you want insulated, a rough square footage and any health concerns at home handy so the first visit covers it all.