Spray Foam Insulation in Los Angeles — Same-Day Service, Done Right the First Time

Fast, Reliable Spray Foam Insulation Across Los Angeles

Spray foam insulation in Los Angeles typically runs $2.50 – $7.50 per square foot installed, with whole-attic jobs landing between $4,000 and $12,000 depending on foam type and the condition of what’s already up there. We work across the city’s older neighborhoods daily, from Koreatown’s low-rise multi-family buildings to the 1920s bungalows off West Adams. You can reach our crew directly at (866) 271-1602 to schedule a free estimate.

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Why Fontana Insulation Is Los Angeles’s Preferred Spray Foam Insulation Company

Los Angeles homeowners call us because we carry both open- and closed-cell spray foam from Icynene and Demilec, two of the most performance-tested brands in North America, and because we’re not married to any single material. If spray foam isn’t the right answer for your attic, we’ll tell you. We also install Rockwool mineral wool, fiberglass from Owens Corning and CertainTeed, and GreenFiber cellulose, so the recommendation actually matches your home’s thermal problems. Noel Arredondo built this company around that principle: no brand loyalty, just the best fit for your attic, walls, or crawlspace.

Our crews know South LA and central LA housing stock because we’ve spent years in these attics. We understand what happens to insulation in a 1940s Craftsman after decades of roof work and ad-hoc remodels. That’s not something a crew from the Valley or Orange County can say with the same depth. When you call for spray foam insulation work in Los Angeles, you get a specialist who knows what’s waiting behind the access hatch.

Garage Spray Foam Insulation in Los Angeles

Garage Spray Foam Insulation in Los Angeles solves a problem most homeowners don’t realize they have until summer hits: the garage absorbing solar heat all day and radiating it into the rooms above or beside it. In the older homes across 90006 and 90008, garages are frequently attached and poorly sealed, with exposed roof decking and uninsulated walls. Spraying closed-cell foam on the garage ceiling or shared wall stops that heat transfer and also cuts down on noise, dust, and exhaust fume intrusion. A typical single-car garage ceiling in Los Angeles runs $1,800 – $3,200, depending on access and whether old material needs removal first.

Older Garages With Attached Rooms

We see this constantly in South LA’s 1920s – 1950s bungalows: a garage was converted or partially enclosed decades ago, and the room above it never stopped being an oven. Foam on the garage ceiling creates a true thermal break. It’s one of the most cost-effective comfort fixes in this housing stock.

Garage Perimeter And Shared Walls

When a garage shares a wall with living space, that wall is almost never insulated in older construction. Closed-cell foam on the shared wall and rim joist area seals air movement and reduces both heat gain and exhaust smell transfer into the house.

Closed Cell Spray Foam Insulation in Los Angeles

Closed Cell Spray Foam Insulation in Los Angeles is what we recommend for homeowners dealing with the city’s intense radiant heat load on roof decks. Closed-cell foam adds structural rigidity, acts as a vapor barrier, and delivers around R-6.5 to R-7 per inch, which matters when attic temperatures spike during a hot, dry LA summer. It’s the right call for roof deck applications, older wall cavities with limited depth, and any area where moisture or air leakage is a concern. A full roof deck retrofit on a 90007 or 90008 bungalow usually falls between $6,000 and $11,000 installed.

Roof Deck Air Sealing

Spraying the underside of the roof deck turns the attic into a conditioned space and stops radiant heat from baking the rooms below. In Los Angeles, this is often the single most effective upgrade for a hot upstairs or a second floor that never cools down.

Knob-And-Tube Framing Retrofits

Older central LA homes with knob-and-tube-era framing need careful prep before foam goes in. We don’t spray over live knob-and-tube wiring, and we inspect cavity areas first. The foam works, but only if we address the air paths and legacy framing gaps at the same time. Skipping that step defeats the purpose, which is why some contractors shy away from these retrofits entirely.

Trusted Brands We Service in Los Angeles

We stock and install Icynene and Demilec spray foam products, two brands with rigorous performance testing across North American climate zones. We’re an authorized installer for both, and we also carry CertainTeed and Rockwool for Los Angeles customers who want a fiberglass or mineral wool comparison. Since we carry eight nationally recognized brands across four material categories, we’re not pushing whatever happens to be in the warehouse. We’re matching your home’s needs to the right product. For Los Angeles projects, that often means closed-cell Icynene on roof decks and Demilec open-cell for interior wall cavities where sound dampening matters.

Common Spray Foam Insulation Problems We See in Los Angeles Homes

• Foam sprayed over degraded attic material. In older South LA bungalows, we routinely find attic insulation that’s been compressed flat or covered in roof debris from a past reroof. Spraying over that traps the junk and guarantees a failed bond, so removal is step one.
• Trapped moisture on hot roof decks. Los Angeles attics bake in summer. Closed-cell foam on the roof deck is the right call, but only when attic ventilation is addressed properly. Skipping that step can cook the foam and create moisture problems.
• Unsealed wall cavities in knob-and-tube-era framing. Homes around West Adams and parts of 90005 and 90006 often have original framing with gaps you can see daylight through. Foam won’t fix the thermal boundary if those air paths stay open.
• Foam as a band-aid for a failed roof. In Hollywood and Echo Park, some roofing crews sell spray foam as a leak fix. It isn’t. If the roof membrane fails, the foam gets wet. Water damage behind closed-cell foam is expensive to find and worse to fix.

Pricing for Spray Foam Insulation in Los Angeles, CA

We Also Serve Cities Near Los Angeles

We work throughout the LA basin, from Koreatown and Echo Park to Silver Lake and Hollywood. If you’re in any of those neighborhoods, you’re in our regular service rotation and the same crews handle your Los Angeles project. Call and we’ll schedule a walkthrough.

FAQs About Spray Foam Insulation in Los Angeles