Insulation Company in Manhattan Beach, CA
Blown in insulation in Manhattan Beach solves a problem most homeowners don’t realize they have until the marine layer settles in for the summer. Homes here, especially the original 1940s and 1950s beach bungalows with open-rafter attics, lose conditioned air through gaps and thin old batts while damp salt-laden air works its way into the same spaces. We’re Orange County Insulation, an insulation-only contractor serving Manhattan Beach since 2013, and we’ll match the right blown-in material to your specific house, whether it’s a two-story custom on the walk-streets or a cottage near Sand Dune Park. Call (877) 680-3557 when you’re ready to stop guessing about why those rooms never hold temperature.
Why Manhattan Beach Homes Are Different
Manhattan Beach’s coastal exposure is the whole insulation story. The marine layer, salt-laden onshore air, and cool humid nights mean insulation here is judged on moisture and condensation control as much as R-value. A beachfront or walk-street home near The Strand faces very different vapor and mold pressures than one just a few blocks inland on the flat streets. No inland South Bay city has this same salt-air, high-condensation envelope problem at this density near the water.
The housing stock compounds it. Much of Manhattan Beach is original 1940s-1960s beach bungalows and cottages being replaced or added onto, mixed with newer custom multi-story homes. Older crawlspaces and open-rafter bungalow attics blend with tight modern envelopes, so insulation specs vary greatly from one block to the next. What works for a new build on 12th Street may be wrong for a 1958 bungalow on a walk-street two blocks away. We read each house as its own set of moisture and airflow conditions, not as a generic “coastal home.”
Our Main Manhattan Beach Services
Most Manhattan Beach homeowners call us about two services: attic insulation and spray foam insulation. Here’s how each works in this specific coastal environment.
Attic Insulation in Manhattan Beach
Attic insulation is the single biggest energy-loss zone in most Manhattan Beach homes, but the marine layer changes the calculus here. The top of the house gets fog and damp air on cool nights, and if old batts have been sitting damp, they’ve likely lost R-value or started growing mold. We inspect what’s up there, take moisture readings, and recommend the right material match, whether that’s blown-in cellulose, fiberglass, or mineral wool. See Attic Insulation in Manhattan Beach for the full breakdown of how we approach attic jobs along the coast.

Spray Foam Insulation in Manhattan Beach
Spray foam does two jobs at once in a beach climate: it insulates and it air-seals. That air-sealing matters in Manhattan Beach because the onshore air carries salt and moisture that move through tiny gaps in framing. Closed-cell foam, which we install through Demilec, acts as a vapor barrier and makes sense for crawlspaces and rim joists on older bungalows. Open-cell Icynene fits attics where you want the roof deck to breathe. Read Spray Foam Insulation in Manhattan Beach for a more detailed look at foam options for coastal homes.

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 Manhattan Beach

Blown in insulation is often the cleanest retrofit for Manhattan Beach’s older bungalows and cottages, because loose-fill material settles into every odd cavity, around wiring, and over irregular joist spacing without tearing out walls or ceilings. The marine layer means we pay as much attention to moisture readings and ventilation as we do to R-value, particularly in open-rafter attics where damp air sits after fog season. Our crews install blown-in fiberglass and cellulose using the right material for the specific house, not whatever’s easiest. Learn more about the method on our Blown In Insulation page, or keep reading for the Manhattan Beach specifics.
Cellulose Insulation
Signs you need it
Your attic has thin or settled old insulation, and rooms upstairs run noticeably warmer than the rest of the house during afternoon sun with the marine layer gone.
What it costs in Manhattan Beach
Blown-in cellulose in a typical Manhattan Beach attic runs $1.25 – $2.00 per square foot, depending on depth and access.
How we do it
We dense-pack or loose-fill cellulose (GreenFiber) through a hose, ensuring even coverage over existing insulation while checking for moisture before we start.
Blown In Attic Insulation
Signs you need it
You can see the tops of joists or old batts are compressed, damp, or missing in sections, especially after fog season near the coast.
What it costs in Manhattan Beach
Blown-in attic insulation in Manhattan Beach generally falls between $1,600 and $3,200 for an average home, based on square footage and target R-value.
How we do it
We seal air leaks at the attic floor first, then blow loose-fill material to a consistent depth across the entire attic, keeping soffit vents clear for airflow.
Loose Fill Insulation
Signs you need it
Rooms near exterior walls feel cold on foggy nights, or you’re noticing drafts in a second-story addition built years after the original house.
What it costs in Manhattan Beach
Loose fill insulation starts around $1.00 per square foot for fiberglass, with cellulose typically running $1.25 – $2.00 per square foot in Manhattan Beach.
How we do it
We run a blowing machine from the truck, feeding loose-fill material through hoses into attics or enclosed cavities, adjusting density based on whether it’s open-blow or dense-pack.
What Blown In Insulation Costs in Manhattan Beach
| Item | Typical range in Manhattan Beach |
|---|---|
| Blown-in fiberglass (open blow, per sq ft) | $1.00 – $1.50 |
| Blown-in cellulose (per sq ft) | $1.25 – $2.00 |
| Full attic blow-in for average bungalow | $1,600 – $3,200 |
Does blown in insulation help with moisture in Manhattan Beach attics?
It doesn’t stop moisture by itself. In Manhattan Beach, the marine layer pushes damp air into attics, so we check ventilation and existing moisture before blowing in cellulose or fiberglass. A damp attic needs airflow fixed first.
How long does blown in insulation last in a coastal climate?
Cellulose and fiberglass both last decades if they stay dry. Salt air and fog cycles don’t degrade the material itself; what ruins it is trapped moisture. That’s why we take moisture readings in Manhattan Beach attics before installing anything.
Brands We Service in Manhattan Beach
We stock and install Owens Corning, Johns Manville, Knauf, and Rockwool products for Manhattan Beach jobs, plus cellulose from GreenFiber and spray foam from Icynene and Demilec. Parts and materials for most blown-in and batt work are available within a day or two. See our brands for the full manufacturer lineup.
Pricing for Insulation Company in Manhattan Beach, CA
| Service | Typical range in Manhattan Beach |
|---|---|
| Blown-in fiberglass (per sq ft) | $1.00 – $1.50 |
| Blown-in cellulose (per sq ft) | $1.25 – $2.00 |
| Full attic blow-in (average bungalow) | $1,600 – $3,200 |
| Attic insulation (full job, including air sealing) | $2,500 – $5,000+ |
| Open-cell spray foam (per sq ft) | $0.80 – $1.70 |
| Closed-cell spray foam (per sq ft) | $1.70 – $3.10 |
| Spray foam attic (full job) | $3,500 – $7,500+ |
| Crawl space encapsulation (full job) | $4,000 – $9,000 |
In Manhattan Beach, two things push prices up more than anything else: access and existing moisture. Crawlspaces under older bungalows are often tight, and attics on beachfront or walk-street homes may require additional setup. Our quotes are upfront and line-itemed, so you know the cost before we start.
Neighborhoods We Serve in Manhattan Beach
We work across both Manhattan Beach ZIP codes, 90266 and 90267, covering everything from the beachfront walk-streets to the flat streets east of Sepulveda. Our crews are familiar with the older bungalow stock and the newer custom builds alike.
- Tree Section
- Hill Section
- Sand Section (walk-streets and The Strand)
- Manhattan Village
- East Manhattan Beach
Response time for most Manhattan Beach estimates is within a few business days, and we schedule installations around fog season when possible for attic work.
Service Area – Cities Near Manhattan Beach
Beyond Manhattan Beach, Orange County Insulation covers the surrounding South Bay communities with the same insulation-only focus. We regularly work in Redondo Beach, CA and Hermosa Beach, CA, plus the more inland neighborhoods of Torrance, CA. We also serve hill-adjacent areas like Rolling Hills Estates, CA and Palos Verdes Estates, CA, where larger custom homes have their own attic and crawlspace needs. Coastal moisture patterns shift only slightly across these cities, but the housing stock changes enough that we adjust our material recommendations accordingly.
Serving Manhattan Beach, CA — Our Local Coverage Area
We’re based in the Manhattan Beach 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 Manhattan Beach
Most retrofit insulation work in Manhattan Beach does not require a permit, since it’s not structural. If your project is part of a larger remodel or addition, the general contractor’s permit typically covers it. We can confirm specifics for your scope before we schedule.
We typically schedule Manhattan Beach estimates within a few business days. If you’re dealing with a damp attic or a failed crawlspace liner, mention it when you call and we’ll prioritize the visit. Call (877) 680-3557 and we’ll find the soonest slot.
We work on both. Many Manhattan Beach jobs are on 1940s-1960s bungalows with open-rafter attics and small crawlspaces. Those homes need more air sealing and moisture checks before insulation goes in, but the process is the same: inspect, measure, recommend, install.
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 Manhattan Beach Customers Say
"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Miguel Flores"He did a blower door test before and after and gave me the numbers. I like being able to see the difference rather than being told about it."
— Nia Robinson"Installed baffles at the soffits so the new insulation didn't block the ventilation, which the previous contractor apparently never considered."
— Mark Schaefer