Closed-cell foam insulation in Gardena CA - one layer that slows heat and moisture
Cold floor over the crawl space or a damp corner that never feels right? We spray a rigid foam layer that slows heat and moisture together.

Is closed-cell spray foam the right fit for my house?
Closed-cell foam insulation in Gardena, CA is a dense spray foam that hardens into a rigid layer, and we use it where a crawl space, a wall or the room over the garage needs to slow moisture as well as heat, because one layer handles both.
Most calls start with a floor that stays cold over the crawl space, a musty smell under the house or a room that's hot upstairs no matter what the thermostat says, so I want to see why the spot is like that before anything gets sprayed. The price moves with how big the area is and how thick the foam goes on. The schedule moves with the time your household spends out of the house while the foam cures and the place gets aired out, and with a permit if your job needs one. Your estimate puts the measurements and the order of the work in writing.
How we install closed-cell foam insulation
I spent years in restaurant kitchens before this trade, and the rule there holds here too, so prep comes before anything cooks. We clear the area, pull out old insulation that's wet or full of droppings so the problem doesn't get sealed in, cover everything that shouldn't get foam on it and keep the vents clear so the space can still breathe. Then we spray to the thickness on your estimate, checking depth as we go so the edges get as much foam as the middle, and once it cures the house gets aired out and cleaned before anyone comes home.
Closed-cell isn't the only foam we spray. Open-cell foam insulation is softer and lighter, so it suits spots where you want a quieter, more comfortable room and moisture isn't part of the problem. For apartment buildings, shops and offices, our commercial insulation work follows the same prep-first order, which matters to the landlords and property managers who call us.
Closed-cell foam insulation permits and houses in Gardena
Gardena requires a building permit for most remodel, repair and alteration work on houses, but its list names jobs like re-roofs and window change outs, not insulation, so the list alone doesn't settle whether a foam job at your address needs one. The place to ask is the city's building services office. Some addresses around here fall under the County instead of the city, so we find out which office covers your house first, and when the job needs a permit, we handle the paperwork and keep you posted.
We're based in Gardena and work in many cities and County areas around it, and the calls are mostly older houses where the underfloor or the room over the garage was never insulated well. We see the same kind of houses on jobs in Torrance and Carson, and we handle them the same way.
How a closed-cell foam job goes
Call us or send the form
Call (424) 292-2987 or send the form, and we'll set a time for me to come out. We pick up from 6 AM on weekdays and 8 AM on weekends.
I look at it with you
I go into the crawl space, walls or attic with you, take photos and explain what I see and the order I'd do the work in. If anyone at home has asthma, allergies or sensitive skin, we go over the foam's product sheet right then, before you decide anything.
Read your written estimate
You get a written estimate with the area and foam thickness I measured, since those two set the price, plus the order the work goes in. It also tells you when your household needs to be out and the wait before you come back for the product we'd use.
Our crew sprays and cleans up
If you go ahead, my lead installer runs the crew, sprays while the house is empty, then airs it out and cleans before you're back. They walk you through the finished foam so you can see the coverage edge to edge.

Get a measured estimate for closed-cell foam
Send the form and we'll reply within one business day to set up a time for me to come look. The estimate is free, done on site and comes with no obligation, so you can read it, ask questions and decide on your own time.
What people ask about closed-cell foam
How much does closed-cell spray foam insulation cost in Gardena?
In the Los Angeles area, closed-cell spray foam usually costs about $1 to $1.60 per board foot, which is one square foot of foam an inch thick. That means area and thickness both count, so 1,000 square feet sprayed 3 inches thick comes to 3,000 board feet, and I measure both at your estimate.
How long do we have to stay out of the house after spray foam?
National safety guidance says everyone in the household should be out while the foam goes in and stay out until it cures and the house has been aired out and thoroughly cleaned. Some foam makers recommend waiting 24 hours before residents come back, but it varies by product, so we tell you the re-entry time, the wait before you can come home, for the foam we'd use, and you can plan a stay elsewhere around it.
Who can install spray foam insulation in Gardena, CA?
Hire a contractor licensed by the state, because California's insulation classification covers contractors who install any insulation for heat or sound control. State rules say even a job under $1,000 needs a license if any permit rule applies or the worker hires helpers, and in Gardena only properly licensed people, or those the state license law exempts, can take out a permit, with a current City Business License on top of the state license.
Is spray foam safe if someone in my house has asthma?
National safety guidance says people with asthma, respiratory allergies, skin conditions or a past sensitivity to isocyanates, chemicals used in the foam, should carefully review the product information and may want to consider other insulation. That's why the product sheet comes out at the first visit, and if foam isn't a good fit for your household, I'll tell you what else would do the job.
What is the difference between closed-cell and open-cell spray foam?
Closed-cell is the rigid, dense one, and at typical thickness it acts as a vapor retarder, a layer that lets almost no moisture vapor through. Typical closed-cell rates R-6 per inch, R-value being how well insulation slows heat, and its rigid form is far harder to squash than softer insulation.
How do I know if closed-cell foam is worth it over cheaper insulation?
Foam costs more than loose fill but seals air while it insulates, so it earns its price when moisture is part of the problem or the ductwork runs through the space. In a plain attic, sealing the gaps around lights, pipes and the hatch and topping up blown-in insulation usually does the job for less, and I'll tell you which way I'd go for your house.
Why Gardena homeowners call Professional Gardena Insulation Company for closed-cell foam
The owner walks it with you
I still come out to look at most jobs myself, and I show you the photos before I price anything. You see the damp spots and the old material with your own eyes, so nothing on the estimate is a step you can't picture.
In business since 2013
I started this company in 2013 after learning the trade on a crew, one attic and crawl space at a time. Thirteen years in, I know what older houses tend to hide under the floor and how to plan around it.
Licensed and insured
We're licensed and insured, and we back our work with satisfaction guaranteed on every job. Ask about either at the estimate and I'll go through it with you.
City inspections lined up for you
On permitted jobs in Gardena, city inspectors check the work in phases against the approved plans. We set up those visits around the spraying and cure, so the inspector sees each stage when it's ready.
With closed-cell foam, the measuring and the plan for your time out of the house matter as much as the spraying. Call (424) 292-2987 or send us a request and I'll come take a look.
Other foam and insulation work we do
Open-cell foam insulation
If moisture isn't the worry and you mostly want a quieter, more comfortable room, the softer foam may be the better match.
Commercial insulation
For rentals, small buildings and shops, where tenants or staff need a plan for time out of the space while the foam cures.
Book your closed-cell foam estimate today
Call (424) 292-2987 or use the form with the rough size of the area, where you want the foam and any asthma or allergy concerns at home, so I can plan the visit around them.





