Insulation Company in Hollywood, CA
Blown in insulation is the most common fix we install in Hollywood, and for good reason: most buildings here were framed between 1920 and 1960, with empty wall cavities and flat or low-slope roofs that let afternoon heat pour straight into top-floor units. Airtight Insulation Co has served Hollywood since 2011, focusing on the multi-unit and hillside envelopes that dominate 90028. If your rooms bake in summer and stay warm for hours after sunset, call (833) 390-7079 and we’ll diagnose exactly what’s missing.
Why Hollywood Homes Are Different
Hollywood’s housing stock is not like the Valley. The side streets north and south of Hollywood Blvd are dense with 1920s courtyard apartments, stucco-over-wood-frame fourplexes, and mid-century walkups. Most were built before wall insulation was standard, and many original low-slope roofs have nothing between the ceiling joists and the roof membrane but a thin layer of plaster and open air. When the afternoon sun hits those flat roofs, the top-floor units become ovens. West-facing stucco walls do the same for units that catch the late sun.
The Mediterranean climate means we worry about heat gain, not heat loss. Santa Ana events in fall push dry heat into buildings, and every gap in the envelope lets that heat in faster. What makes Hollywood unique is that this is a landlord-and-HOA problem more than a homeowner one: the tenant complains about the temperature, the owner worries about energy costs and turnover, and the fix has to work inside tight access, shared walls, and aging framing. Blown in insulation fits those constraints better than most methods.
Our Main Hollywood Services
Most Hollywood calls start with two problems: a top-floor unit that won’t cool down, and airflow through walls or rim joists that no one has addressed since the building went up. Here are the two services we route to their own dedicated Hollywood pages.
Attic Insulation in Hollywood
Many Hollywood properties, especially hillside homes and courtyard buildings, have usable attic space or a crawl cavity above the ceiling that was never insulated correctly. We inspect what’s up there, seal the bypasses that let air move between floors, and install the right material for the roof type. For flat and low-slope roofs, that often means dense-packed cellulose or fiberglass batts detailed around the joists. See the full breakdown on our Attic Insulation in Hollywood page.
Spray Foam Insulation in Hollywood
For Hollywood buildings with complex roof deck geometry, enclosed wall cavities, or a need for air sealing plus thermal resistance in one pass, spray foam is often the right call. We run both open-cell and closed-cell through our Icynene and Demilec lines, which matters because closed-cell handles the moisture challenges of older stucco on wood frame while open-cell works well in vented attics. Read the detailed Hollywood-specific guide at Spray Foam Insulation in Hollywood.
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 Hollywood
Blown in insulation is our most-requested service across Hollywood because it solves the exact problem this housing stock creates: uninsulated cavities in buildings that were never designed for modern cooling loads. In 1920s courtyard apartments and mid-century fourplexes, we blow cellulose or fiberglass into existing wall and ceiling cavities, filling the empty spaces without tearing out plaster or disturbing tenants. It’s the fastest, least invasive way to cut heat gain through flat roofs and west-facing walls. For the full technical breakdown of materials and methods, see Blown In Insulation.
Cellulose Insulation
Signs you need it
Rooms that heat up fast in the afternoon, high cooling bills in a building with no wall insulation, and noise bleeding through shared walls between units.
What it costs in Hollywood
Cellulose blown into existing walls and attic cavities in Hollywood typically runs $1.50 to $3.50 per square foot installed, depending on cavity depth and access.
How we do it
We locate stud or joist bays, cut small access points, and pump dense-packed cellulose through a hose until the cavity is filled to the specified density, then patch the access points cleanly.
Blown In Attic Insulation
Signs you need it
Top-floor units that stay hot hours after sunset, heat radiating down from the ceiling, and flat roof assemblies with little or no insulation above the joists.
What it costs in Hollywood
Blown in attic insulation in Hollywood generally lands between $1,500 and $3,800 for a typical multi-unit flat roof cavity, with older buildings on the higher end due to access and disposal of debris.
How we do it
We seal bypasses and penetrations first, then blow insulation to the target depth across the attic or ceiling cavity, ensuring even coverage without gaps or voids.
Loose Fill Insulation
Signs you need it
Visible gaps in existing attic or wall insulation, settled material that has compressed below its rated depth, and inconsistent room temperatures from one floor to the next.
What it costs in Hollywood
Loose fill installation in Hollywood starts around $1.50 per square foot for simple, open attic cavities and rises with depth requirements and access complexity.
How we do it
We run a mechanical blower from the truck to the install point, distributing loose fill evenly until the specified R-value is reached, then rake and level as needed.
What Blown In Insulation Costs in Hollywood
| Item | Typical range in Hollywood |
|---|---|
| Cellulose blown into walls | $1.50 – $3.50 per sq ft |
| Blown in attic insulation | $1,500 – $3,800 total |
| Loose fill over existing insulation | $1.50 – $2.50 per sq ft |
Two things push blown in insulation prices up in Hollywood: the age of the building, which often means debris removal and limited access points, and the density of occupancy, which means we schedule around tenants and sometimes work in smaller time windows. We give an upfront price before we start, so the number we quote is the number you pay.
How long does blown in insulation last in Hollywood’s climate?
Cellulose and fiberglass both hold up well in Hollywood’s dry climate. The material itself lasts decades, but settling can reduce effectiveness over time, especially in wall cavities. We check density during installation so it stays put.
Can blown in insulation be added to walls that already have some insulation?
Yes. If the existing material has settled or there are gaps, we can dense-pack additional insulation into the same cavity. In Hollywood’s older buildings, we often find partial or compressed batts that leave the top third of a wall uninsulated.
Brands We Service in Hollywood
We stock and install fiberglass from Owens Corning, cellulose from GreenFiber, and spray foam systems from Icynene and Demilec. Because we carry all of them, the recommendation is based on your building’s construction, not what’s on the truck. Most materials are available for Hollywood jobs within a day or two. Learn more at our brands.
Pricing for Insulation Company in Hollywood, CA
| Service | Typical range in Hollywood |
|---|---|
| Cellulose wall insulation | $1.50 – $3.50 per sq ft |
| Blown in attic insulation | $1,500 – $3,800 total |
| Loose fill over existing insulation | $1.50 – $2.50 per sq ft |
| Attic air sealing and insulation | $2,000 – $5,500 total |
| Spray foam, open-cell (attic or wall) | $2.00 – $4.50 per sq ft |
| Spray foam, closed-cell (roof deck or rim joist) | $3.00 – $6.50 per sq ft |
| Mineral wool batts (sound or fire) | $2.50 – $5.00 per sq ft |
Hollywood pricing tends to land on the higher side of these ranges when the building is older, access is tight, or work has to happen around occupied units. Every job gets a fixed upfront price, and we don’t add charges mid-project unless the scope changes and you approve it first.
Neighborhoods We Serve in Hollywood
We work throughout 90028 and the surrounding Hollywood area, from the apartment courtyards near Hollywood Blvd to the hillside streets climbing toward the Hollywood Hills. Most Hollywood jobs take us one to three days depending on the scope and whether we’re working in occupied units.
- Hollywood Blvd corridor
- Whitley Heights
- Little Armenia
- Thai Town
- Franklin Village
Service Area – Cities Near Hollywood
Our crews regularly cross into the neighboring cities around Hollywood. If your property is just outside 90028, we likely already serve your area: Universal City, CA to the north, West Hollywood, CA to the west, Koreatown, CA to the south, and Echo Park, CA to the east.
Serving Hollywood, CA — Our Local Coverage Area
We’re based in the Hollywood 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 Hollywood
Most Hollywood projects can be scheduled within a week of the estimate, often sooner for smaller blown in jobs. Multi-unit buildings sometimes need an extra day or two for HOA or landlord approval, which we help coordinate. Call us and we’ll give you a real start date.
For condo units and buildings with an HOA, yes, usually you’ll need approval before we touch shared walls, attic cavities, or roof structures. We’re familiar with Hollywood’s older HOAs and can describe the scope in the way boards need to see it.
We do. We schedule work around tenants and keep common areas clear. For blown in wall insulation in occupied units, access is typically through the exterior or from the attic, which means tenants rarely need to vacate. We’ll walk you through the plan before we start.
If your Hollywood building is hot upstairs, drafty, or costing more to cool than it should, call Airtight Insulation Co at (833) 390-7079. We’ll inspect the cavity, tell you what’s actually missing, and give you a fixed price for the fix. Estimates are free.
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 Hollywood Customers Say
"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."
— Simone Grant"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."
— Rashad Coleman"Spray foam in the rim joists in the basement. The cold floors above them are gone."
— Steve Ziegler