Insulation Company in Santa Monica, CA
Blown in insulation is the answer for hundreds of Santa Monica homes built before anyone thought about energy codes. The coastal fog, salt air, and aging stucco bungalows here don’t just leak air, they trap moisture inside wall cavities and attics. Our team at Cozy Insulation Co installs loose-fill fiberglass and cellulose from GreenFiber that fills those gaps and works with the marine climate instead of fighting it. If your rooms swing ten degrees between morning and noon, call (855) 382-3925 and we’ll figure out what’s actually happening in your walls.
Why Santa Monica Homes Are Different
Santa Monica’s coastal fog belt changes how insulation performs. Moisture-laden air rolls in most mornings, and salt rides with it. In the 1920s and 1930s bungalows north of Wilshire and the Spanish-style stucco homes on pier-and-beam foundations, batt insulation in attics and crawl spaces often sits damp and matted. That trapped moisture quietly destroys R-value and invites the mold-tinged smell homeowners can’t place. We inspect for exactly that pattern before recommending anything.
The housing stock runs deep and old. Many of these homes still have original knob-and-tube era framing, no wall insulation, and attics sealed up decades ago with whatever was cheap. The 1950s and 1960s tract homes and larger condo buildings in the 90401 and 90402 ZIP codes have their own issues: thin ceiling insulation and unshaded west-facing glass that turns upper units into solar ovens by 3 p.m. Fog-cooled mornings and ocean humidity mean the job here is moisture control and airtightness, not just stacking higher R-value.
Our Main Santa Monica Services
Most Santa Monica homeowners call us about two things: an attic that’s holding heat or moisture, or walls and rim joists they’d like sealed with spray foam. Here’s what each involves here.
Attic Insulation in Santa Monica
Older Santa Monica attics are where the marine air does its worst work. We pull back matted fiberglass, check for damp sheathing along north and west roof slopes, and rebuild the attic floor with clean blown-in material or fresh batts. Radiant heat from unshaded south-facing roofs is common in the flats near the 10, so we also look at how well the attic vents. It’s a redo of the thermal envelope, not a top-off. Read more on our Attic Insulation in Santa Monica page.
Spray Foam Insulation in Santa Monica
Spray foam solves two Santa Monica problems at once: air leakage and salt-driven corrosion at fastener points. In crawlspaces under pier-and-beam bungalows, closed-cell foam seals the rim joist and keeps damp ocean air from circulating up through old floorboards. For cathedral ceilings in mid-century homes, open-cell foam fills the cavity and quiets the street noise that comes with dense coastal lots. See how it works in older framing on our Spray Foam Insulation in Santa Monica page.
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 Santa Monica
Blown in insulation is the workhorse for Santa Monica’s older homes because it gets into places batt insulation never will. Loose-fill cellulose from GreenFiber or blown fiberglass flows around the odd framing, knob-and-tube obstacles, and shallow cavities common in 1920s bungalows and pier-and-beam foundations. In this marine climate, it also handles moisture better than people expect, especially when paired with proper attic ventilation and a vapor check. Most attic installations in Santa Monica run $1,700 to $3,000 depending on square footage and how much old material we remove first. Our Blown In Insulation crews work in the 90401, 90402, 90410, and 90411 ZIP codes every week.
Cellulose Insulation
Signs you need it
Your attic has thin, settled material or you can see the ceiling joists through whatever’s up there, and upstairs rooms bake by mid-afternoon.
What it costs in Santa Monica
Blown in cellulose for an average Santa Monica attic runs $1,900 to $3,200 including removal of the old matted material.
How we do it
We air-seal ceiling penetrations, install baffles at the eaves so fog-season moisture doesn’t back up, then blow GreenFiber cellulose to a consistent depth across the attic floor.
Blown In Attic Insulation
Signs you need it
Rooms directly under the roof feel ten degrees warmer than downstairs by mid-afternoon, and your AC runs longer than it should all summer.
What it costs in Santa Monica
A standard blown in attic job in Santa Monica runs $1,700 to $3,000 for demolition, air sealing, and new loose-fill material.
How we do it
We remove the existing matted or damp material, seal the attic floor penetrations, and blow fresh fiberglass or cellulose to the target depth with consistent coverage.
Blown In Fiberglass Insulation
Signs you need it
Your attic has old, compressed fiberglass that’s lost its loft, and the top floor feels drafty on fog-cooled mornings.
What it costs in Santa Monica
Blown fiberglass for a typical Santa Monica attic runs $1,700 to $2,900 depending on depth and prep.
How we do it
We vacuum out the old material, seal the leaks, and blow in fresh fiberglass at the depth that fits your attic and ventilation setup.
What Blown In Insulation Costs in Santa Monica
| Item | Typical range in Santa Monica |
|---|---|
| Blown in attic insulation (full job) | $1,700 – $3,000 |
| Cellulose attic installation | $1,900 – $3,200 |
| Air sealing and prep | $300 – $700 |
How long does blown in insulation last in Santa Monica’s humidity?
Cellulose and fiberglass both hold up well here if the attic vents properly. The material itself won’t rot, but damp air trapped under the roof deck can mat it down over time. We fix ventilation first, then insulate, so the new material doesn’t inherit the old problem.
Can you blow insulation into walls that have no insulation at all?
Yes, and we do it often in Santa Monica’s 1920s and 1930s bungalows. We drill small access holes, blow the material into the stud cavities, and patch cleanly. It’s one of the few ways to add thermal protection without opening up lath and plaster. Call (855) 382-3925 for an attic or wall assessment.
Brands We Service in Santa Monica
We install CertainTeed, Icynene, Demilec, and GreenFiber insulation in Santa Monica, and our crews stock replacement material for warranty and touch-up work. Turnaround on special-order products is usually two to three business days. See the full lineup on our brands page.
Pricing for Insulation Company in Santa Monica, CA
| Service | Typical range in Santa Monica |
|---|---|
| Blown in attic insulation | $1,700 – $3,000 |
| Cellulose attic installation | $1,900 – $3,200 |
| Blown fiberglass attic job | $1,700 – $2,900 |
| Air sealing and prep | $300 – $700 |
| Spray foam rim joist and crawlspace | $2,200 – $5,500 |
| Spray foam attic roof deck | $4,500 – $9,500 |
| Attic batt removal and cleanup | $650 – $1,700 |
| Attic insulation full replacement | $1,900 – $4,400 |
What pushes a Santa Monica quote higher is damp material that takes longer to pull out, tight access in old attics, and knob-and-tube wiring that requires careful workaround. We give an upfront price before any work starts, and the number on the quote is the number you pay.
Neighborhoods We Serve in Santa Monica
We work across Santa Monica most weeks, from the beach bungalows near Ocean Park to the larger mid-century homes north of Montana. Our crews know the difference between a pier-and-beam crawlspace off Main Street and a slab tract home near the airport.
- Ocean Park
- Sunset Park
- North of Montana
- Pico District
- Wilshire-Montana
Typical response time for a Santa Monica estimate is one to two business days, with same-week scheduling available for urgent attic or wall work.
Service Area – Cities Near Santa Monica
We also serve homeowners in the neighborhoods that border Santa Monica, including Venice, CA with its canal-adjacent bungalows, Century City, CA high-rises, Culver City, CA Spanish-style homes, and Beverly Hills, CA estates. If you’re in a neighboring community and your attic or walls need work, call us and we’ll let you know our soonest availability.
Serving Santa Monica, CA — Our Local Coverage Area
We’re based in the Santa Monica 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 Santa Monica
Most blown in attic work doesn’t require a city permit, but if we’re adding insulation to walls that have never been insulated, a simple permit is sometimes needed. We handle the paperwork and tell you upfront what applies to your specific home and neighborhood.
We can typically assess a damp attic in Santa Monica within one to two business days. If the moisture is active or you see mold, we prioritize the visit because waiting only drives the repair cost up. Call (855) 382-3925 and we’ll schedule around your availability.
Yes. Multi-family condos and apartment buildings are a big part of Santa Monica’s housing stock, and we work with HOA boards and property managers on shared attics, rim joists, and sound control between units. Access gets coordinated through the association, but the work itself is the same.
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 Santa Monica Customers Say
"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"Spray foam in the rim joists in the basement. The cold floors above them are gone."
— Miguel Guzman