Insulation Company in Los Angeles, CA
Blown in insulation is the most common retrofit we install in Los Angeles, and for good reason: most homes built here between 1900 and 1960 have empty wall cavities and attics with a few inches of dust where insulation should be. We’re Orange County Insulation, and we’ve served Los Angeles since 2013 with one focus: insulation, nothing else. If your summer electric bill climbs past $400 and rooms still feel hot by 3 p.m., call us at (877) 680-3557 for an estimate.
Why Los Angeles Homes Are Different
The 90005 through 90008 ZIP codes are thick with 1920s – 1950s bungalows and low-rise apartment buildings built before wall insulation was standard. Many have stucco over wood frame, narrow attic access, and open balloon-framed cavities that run from crawlspace to attic with no fire blocking. Blowing insulation into those walls without first sealing and baffling the cavities is a code violation and a comfort failure. The mild coastal climate meant builders skipped wall insulation entirely; the summer heat now pouring through attics past 140°F is the bill arriving every August. Los Angeles is the only major US city where insulation work gets evaluated against earthquake retrofit codes and Title 24 energy standards at the same time, so we routinely coordinate wall work with the city’s soft-story retrofit mandate for pre-1940 wood-frame structures. Santa Ana wind events push hot, dry air through every gap, which means air sealing matters here as much as R-value.
Our Main Los Angeles Services
Most Los Angeles homeowners call us about one of two problems: an attic that cooks the whole house in summer, or walls that never had insulation to begin with. Here is what each job looks like in the city.
Attic Insulation in Los Angeles
In neighborhoods like Mid-City and the West Adams district, attics are often shallow and shared with old wiring, recessed lights, and vent ducts that need to be worked around. We scope the cavity depth, check for knob-and-tube wiring (common in pre-1940 homes), and recommend the right material, usually cellulose or fiberglass, to bring the attic to current Title 24 levels. This is the single highest-impact job for summer heat gain. Read the full breakdown on our Attic Insulation in Los Angeles page.
Spray Foam Insulation in Los Angeles
For rooms with no wall cavity depth to speak of, or for the floor between a garage and living space above, closed-cell spray foam delivers R-value in a thinner profile than anything else. Los Angeles homes with foundation vents and unconditioned crawlspaces also benefit from sealing the underfloor, which open-cell foam handles well. We install both open-cell and closed-cell systems using Icynene and Demilec products. See the Spray Foam Insulation in Los Angeles page for material options and pricing detail.
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 workhorse retrofit for Los Angeles’ older housing stock, and it solves two problems at once: summer heat radiating down from attic spaces above 140°F, and wall cavities that have been empty since the house was built. We install blown-in cellulose and blown-in fiberglass depending on the cavity, the access, and the client’s preference for recycled content or lower dust. You can compare the materials on our Blown In Insulation hub page. The job is faster and less invasive than tearing out drywall, which matters in rent-controlled buildings where tenants stay in place during the work.
Cellulose Insulation
Signs you need it
Your energy bills spike each summer while rooms stay warm, and the attic feels like an oven when you open the hatch.
What it costs in Los Angeles
Blown-in cellulose in Los Angeles typically runs $1.50 – $3.30 per square foot installed, with most attic jobs landing between $1,800 and $3,200.
How we do it
We test the existing R-value, seal penetrations and top plates, net or dense-pack the GreenFiber cellulose to the target depth, and leave a card showing the installed R-value.
Blown In Attic Insulation
Signs you need it
Your upstairs rooms are 6 – 10°F hotter than the main floor and the air conditioner runs without changing the temperature.
What it costs in Los Angeles
Attic-only blown-in insulation in Los Angeles starts around $1,200 for a small bungalow attic and ranges up to $3,500 for larger or low-clearance jobs.
How we do it
We pull back any old insulation, check for wiring and venting issues, install baffles at soffit vents, then blow the material to the depth required for current code in the Los Angeles basin.
Blown In Cellulose Insulation
Signs you need it
You want a recycled-content option with strong air-sealing properties, or you have an older home where the walls need dense-packing through small holes.
What it costs in Los Angeles
Blown-in cellulose dense-packed into existing walls runs $2.00 – $4.00 per square foot of wall area in Los Angeles, with whole-wall projects starting around $4,000.
How we do it
We drill access holes from the exterior or interior, snake a fill tube to the bottom of each stud bay, dense-pack GreenFiber cellulose to the correct density, and patch the holes to finish.
Blown In Fiberglass Insulation
Signs you need it
You need an economical attic upgrade with lower dust, and you want an Owens Corning or Johns Manville product with consistent performance.
What it costs in Los Angeles
Blown-in fiberglass in Los Angeles runs $1.50 – $3.00 per square foot installed, with most attic jobs falling between $1,600 and $2,900.
How we do it
We prep the attic, air-seal the top plates and any chases, then machine-blow the fiberglass to the target R-value and verify the depth with a ruler, not an estimate.
What Blown In Insulation Costs in Los Angeles
| Item | Typical range in Los Angeles |
|---|---|
| Blown-in attic insulation (standard bungalow) | $1,200 – $3,500 |
| Blown-in cellulose (attic or walls) | $1.50 – $4.00 per sq ft |
| Blown-in fiberglass (attic) | $1.50 – $3.00 per sq ft |
How long does blown in insulation last in Los Angeles?
Cellulose and fiberglass both last 20 to 30 years in a dry Los Angeles attic, though settling can reduce effectiveness. We can re-blow to top off depth. Call (877) 680-3557 for an inspection.
Can you insulate walls without opening them in Los Angeles?
Yes. Dense-packing blown-in cellulose through small drilled holes insulates closed wall cavities without tearing out drywall. Old balloon-framed walls need sealing and baffling first to meet code. A free estimate confirms the approach.
Brands We Service in Los Angeles
We stock and install GreenFiber cellulose, Owens Corning and Johns Manville fiberglass, and Knauf mineral wool across our Los Angeles service area. Because we’re not tied to one supplier or one material, we spec the right product for the cavity and the budget, and our trucks carry the common SKUs for same-week start dates on most retrofits. See the full lineup on our brands page.
Pricing for Insulation Company in Los Angeles, CA
| Service | Typical range in Los Angeles |
|---|---|
| Blown-in attic insulation | $1,200 – $3,500 |
| Blown-in cellulose (attic) | $1.50 – $3.30 per sq ft |
| Blown-in fiberglass (attic) | $1.50 – $3.00 per sq ft |
| Dense-packed wall cellulose | $2.00 – $4.00 per sq ft of wall |
| Attic air sealing (prep) | $0.40 – $1.20 per sq ft of attic floor |
| Soffit baffle installation | $3 – $8 per baffle |
| Mineral wool batts (walls/floors) | $2.50 – $5.00 per sq ft |
| Spray foam (open-cell, attic underside) | $1.75 – $3.50 per board ft |
| Spray foam (closed-cell, crawls/thin walls) | $2.50 – $5.00 per board ft |
| Attic insulation removal | $1.00 – $2.50 per sq ft |
In Los Angeles, price goes up when we’re working in a low-clearance attic with no standing room, or when a pre-1978 building needs lead and asbestos documentation before we can start. Every estimate is line-itemed and honored as written, so the number we quote is the number you pay.
Neighborhoods We Serve in Los Angeles
Our crews cover the older housing stock across central and south Los Angeles daily, with response times that run one to three days for most neighborhoods.
- Mid-City
- West Adams
- Koreatown
- Jefferson Park
- Leimert Park
Service Area – Cities Near Los Angeles
Beyond the city limits, we run regular routes through Koreatown, CA, Echo Park, CA, Silver Lake, CA, and Hollywood, CA. If you’re in one of those neighborhoods, the same crews and the same brand lineup apply, no subcontracting.
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 Los Angeles homes get an estimate within 24 to 48 hours of calling, and we can usually begin work within one week on standard attic jobs. Dense-packing walls takes a little longer to schedule. Call (877) 680-3557 to check current availability in your ZIP.
Most attic and wall insulation retrofits in Los Angeles do not require a standalone permit, but work tied to a seismic retrofit or addition does. We handle the insulation scope and coordinate with the city when documentation is needed.
Yes. We work in pre-1978 multi-unit buildings throughout Los Angeles, including rent-controlled properties, and we manage asbestos and lead documentation and tenant coordination as part of the job. Every building gets a written scope before we touch a wall.
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 the hour.
- 4You approve before work beginsNothing starts until you say go.
What Los Angeles Customers Say
"Installed baffles at the soffits so the new insulation didn't block the ventilation, which the previous contractor apparently never considered."
— Mark Schaefer"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Beatriz Vargas"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Miguel Flores