Insulation Company in Los Angeles, CA
Blown in insulation is Los Angeles’s most-requested retrofit for good reason: most homes in the 90005 through 90008 ZIP codes went up between 1920 and 1955 with empty wall cavities and vented attics that turn into ovens every August. Cozy Insulation Co has served Los Angeles since 2011, and the job here almost always comes down to stopping afternoon heat from bleeding through ceilings and stucco walls. We install blown-in fiberglass, cellulose, and mineral wool, plus batt and spray foam systems, so the material gets matched to the house instead of the other way around. Call (855) 382-3925 for a free estimate.
Why Los Angeles Homes Are Different
Los Angeles is a cooling-dominated climate. Insulation’s main job here is keeping afternoon heat out, not winter heat in, and that flips a lot of standard advice on its head. The 1920s through 1950s wood-frame bungalows that dominate South and Central LA, along with low-rise stucco apartment buildings, were framed when energy was cheap and insulation was an afterthought. Many have no wall insulation at all, and the vented attics they do have soak up solar gain all day, hitting 140°F or more on summer afternoons and radiating that heat into bedrooms long after the sun drops.
The stucco exteriors on these buildings make wall retrofits awkward without drilling and patching, so attic and crawlspace work, blown-in and batts, is the bread-and-butter job. What works in the San Fernando Valley, where summer attic temps routinely top 140°F, is not automatically the right spec a few miles west near the coast, where the marine layer knocks daytime highs down by 20 degrees. We also pay attention to wildfire exposure on foothill-edge and hillside streets, where non-combustible materials like Rockwool change the conversation. A home in Leimert Park needs a different plan than a condo in Koreatown, and the quote should reflect that.
Our Main Los Angeles Services
Attic insulation and spray foam are the two jobs Los Angeles homeowners call about most, and each page below covers that service in depth, with local pricing, timelines, and what to watch for in older LA construction.
Attic Insulation in Los Angeles
In a 1920s bungalow with a vented attic, the attic floor is usually the single largest uninsulated surface between you and the sun. We see attics every week in Mid-City and Jefferson Park with an inch of compressed fiberglass from the Eisenhower administration doing almost nothing. Our Attic Insulation in Los Angeles page covers blown-in and batt options, air sealing, and what a same-day attic retrofit actually looks like in LA’s older homes.
Spray Foam Insulation in Los Angeles
Spray foam earns its price when the house has an attached garage, a converted attic, or a crawlspace that breathes hot air into the living space all day. Closed-cell foam, in particular, air-seals as it insulates, which matters when you’re fighting a 140°F attic in July. Our Spray Foam Insulation in Los Angeles page explains open-cell versus closed-cell, where each makes sense in LA construction, and what local installs typically run.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Blown In Insulation in Los Angeles
Blown in insulation is the fastest, least disruptive way to fix the biggest thermal weak spot in a 1920s – 1950s Los Angeles home: an under-insulated attic that turns into a heat battery every afternoon. Most of the bungalows and stucco apartments we work on in South and Central LA were built with little or no attic insulation, and adding blown-in fiberglass or cellulose often delivers a bigger comfort win than a new AC unit, at a fraction of the cost. Because we install both materials and also offer spray foam, we’re not married to one answer, and that matters in a city spread across so many microclimates. For the full service breakdown, see Blown In Insulation.
Cellulose Insulation
Signs you need it
Rooms directly under the attic run five to ten degrees warmer than the rest of the house on summer afternoons.
What it costs in Los Angeles
Cellulose blown-in for a typical LA attic runs $2,200 – $5,200, depending on depth, access, and square footage.
How we do it
We air-seal the attic floor’s bypasses, then blow GreenFiber cellulose to a consistent depth across the entire attic, including the hard-to-reach corners under eaves.
Blown In Attic Insulation
Signs you need it
The air conditioner runs constantly through late afternoon and the ceiling feels warm to the touch after sunset.
What it costs in Los Angeles
Blown-in attic insulation in Los Angeles typically runs $2,000 – $5,000 for a standard single-story bungalow.
How we do it
We run a hose from the truck to the attic access, blow the material to the target depth, and level it across every bay so the coverage is uniform.
Blown In Fiberglass Insulation
Signs you need it
The attic has old, flattened batts or nearly bare ceiling joists and upstairs rooms stay hot until midnight.
What it costs in Los Angeles
Blown-in fiberglass for a Los Angeles attic runs $2,000 – $4,800, with the final number tied to depth and attic size.
How we do it
We install Owens Corning loose-fill fiberglass with a calibrated blower so the R-value comes out exactly as specified, without the gaps batts leave around framing.
What Blown In Insulation Costs in Los Angeles
| Item | Typical range in Los Angeles |
|---|---|
| Blown-in attic insulation (fiberglass) | $2,000 – $4,800 |
| Blown-in attic insulation (cellulose) | $2,200 – $5,200 |
| Wall retrofit blow-in (drill and fill) | $3,500 – $8,500 |
Stucco wall retrofits cost more because every stud bay needs a drilled access hole and a patch to match. Attic access that’s tight, a steep roof, or a home with old knob-and-tube wiring will push the number toward the upper end.
Can you blow insulation into walls in a Los Angeles stucco home?
Yes. We drill small access holes through the stucco or from inside, blow the material into each stud bay, then patch to match. It’s more involved than an attic job but very doable in Los Angeles bungalows.
How long does blown in insulation take in Los Angeles?
Most attic jobs take half a day, including setup and cleanup. Wall retrofits usually take one to two days depending on the number of exterior walls. Call (855) 382-3925 and we’ll give you a realistic window for your specific house.
Brands We Service in Los Angeles
We install insulation from Owens Corning, GreenFiber, Icynene, and Demilec, among others, and we stock the most common Los Angeles materials locally in Corona for fast turnaround. See our brands for the full list and what each one is best at.
Pricing for Insulation Company in Los Angeles, CA
| Service | Typical range in Los Angeles |
|---|---|
| Attic insulation (blown-in fiberglass) | $2,000 – $4,800 |
| Attic insulation (blown-in cellulose) | $2,200 – $5,200 |
| Attic insulation (batts) | $1,800 – $4,500 |
| Spray foam attic (open-cell) | $3,000 – $7,000 |
| Spray foam attic (closed-cell) | $4,000 – $9,500 |
| Wall retrofit (drill and fill) | $3,500 – $8,500 |
| Air sealing only | $600 – $1,800 |
| Crawlspace insulation | $1,500 – $4,000 |
Two things push insulation prices up in Los Angeles more than anywhere else: stucco wall retrofits that require drilling and patching, and attics with tight access or old wiring that needs to be worked around. Whatever the range, you get the exact number before we start, and that number doesn’t change mid-job.
Neighborhoods We Serve in Los Angeles
We work across Los Angeles every week, from the bungalow blocks of South LA to the hillside streets of Silver Lake and the dense apartments of Koreatown. Most jobs get scheduled within one to two weeks, and emergency attic work can often be slotted in faster.
- Koreatown
- Mid-City
- Jefferson Park
- Leimert Park
- West Adams
Service Area – Cities Near Los Angeles
Beyond Los Angeles proper, we serve the surrounding neighborhoods and cities that share the same housing stock and heat problems. That includes Koreatown, CA, Echo Park, CA, Silver Lake, CA, and Hollywood, CA. If you’re on the edge of any of these, call us and we’ll confirm coverage.
Serving Los Angeles, CA — Our Local Coverage Area
We’re based in the Los Angeles area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Insulation Company in Los Angeles
Most attic and crawlspace insulation retrofits do not require a permit, but wall retrofits and some spray foam applications can trigger local building department review. We’ll check your specific address before we schedule and handle any paperwork if it’s needed.
Most neighborhoods in our Los Angeles coverage area can be scheduled within one to two weeks. Summer is our busiest season, so if you want attic work done before the next heat wave, call (855) 382-3925 early.
If the walls are solid masonry or concrete, blown-in wall insulation isn’t possible. But most 1920s – 1950s Los Angeles stucco homes are wood-framed with cavities, and those can be drill-and-filled. We’ll confirm what you have during the estimate.
Cozy Insulation Co serves Los Angeles with blown-in, batt, and spray foam insulation matched to your home’s construction and your neighborhood’s climate. Call (855) 382-3925 for a free estimate.
What happens when you call
- 1A real person answersNo phone trees — talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 60-minute.
- 4You approve before work beginsNothing starts until you say go.
What Los Angeles Customers Say
"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Jason Hoffman"Attic was at maybe R-11 from the 1970s and blown in over the top would have just buried the problem. They removed the old material, air sealed the top plates and penetrations first, then blew in to R-49. The upstairs is a completely different house in August."
— Colleen Vaughn"Work is good and the house is noticeably more comfortable. There was insulation debris left in the hall closet under the attic access that I had to clean up."
— Amanda Sullivan