Insulation Company in Hollywood, CA
Blown in insulation is the most requested service in Hollywood, and it is not hard to see why: most of the housing stock around 90028 was built between 1910 and 1939, when builders rarely insulated wall cavities and never insulated attics. We spend a lot of time retrofitting open-stud Spanish Revival bungalows, stucco apartment blocks, and hillside Craftsman homes where the only thing between interior plaster and the afternoon Hollywood sun is a half-inch of stucco. Thermal Insulation Co has served Hollywood since 2012, and the work here is different enough that it deserves its own resource. If you are dealing with a hot second story or a courtyard apartment that bakes from noon onward, call (855) 382-3451 and we will tell you which material and method actually makes sense for the building.
Why Hollywood Homes Are Different
Hollywood’s insulation work is dominated not by single-family attics but by a dense stack of 1920s-era apartment buildings and bungalow courts around 90028. These buildings were constructed with plaster-and-lath interiors, original single-pane windows, and wall cavities that were often left completely empty. Retrofitting them means working around knob-and-tube wiring, which cannot simply be buried under insulation, and respecting the fact that many apartments are rented out as short-term stays. Jobs have to clear guest calendars and HOA-style building rules rather than a homeowner’s weekend. That scheduling reality shapes how we quote and sequence work in Hollywood.
The climate pushes the job in a specific direction too. Hollywood sits in a warm, dry Mediterranean climate with mild winters and long hot summers. The demand here is mostly for cooling-load reduction: attic blown-in work and wall dense-pack to hold back afternoon heat. On the hillside and canyon edges, we routinely find 1920s bungalows with no wall sheathing at all, just stucco over open stud bays. That changes how you can blow insulation and how you handle air sealing, and it is one of the reasons a generic insulation estimate written for a modern tract home does not translate to this ZIP code. Traffic noise from Sunset Boulevard and Hollywood Boulevard also drives acoustic insulation requests in street-facing units.
Our Main Hollywood Services
The two services Hollywood homeowners and property managers call us about most are attic insulation and spray foam. Each solves different problems here, and each has its own dedicated Hollywood page.
Attic Insulation in Hollywood
Most Hollywood attics are shallow, under-ventilated, and still carrying whatever blown-in material someone installed decades ago, if anything at all. In a climate where the attic can reach 150 degrees by mid-July, that heat radiates down through uninsulated ceilings and makes the living space impossible to keep cool. We address this with material selection matched to the attic access, the presence of knob-and-tube, and the depth of the existing air seal. For the full breakdown of what this job involves in Hollywood, read our Attic Insulation in Hollywood page.
Spray Foam Insulation in Hollywood
Spray foam earns its place in Hollywood on the buildings where air movement matters as much as R-value: hillside bungalows with open stud bays, street-facing units needing acoustic isolation, and roof decks on post-war apartment blocks where rigid board is not viable. Open-cell foam performs well for interior sound control and air sealing in wall cavities, while closed-cell is the right call where moisture or structural racking is a concern in older stucco buildings. We install both using Icynene and Demilec systems. Details are on our Spray Foam Insulation in Hollywood 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 Hollywood
Blown in insulation is our most requested service in Hollywood because it is the least invasive way to add real thermal performance to buildings that were never designed for insulation. Dense-packed cellulose or loose-fill fiberglass can be installed through small access holes into empty wall cavities, attics, and floor systems without tearing out plaster or disrupting tenants. In Hollywood’s 1910s and 1920s housing stock, that minimally invasive approach is often the difference between a retrofit that happens and one that gets postponed for years. You can read more about the method itself on our Blown In Insulation service page, but the Hollywood specifics are below.
Cellulose Insulation
Signs you need it
Rooms that heat up by mid-afternoon even with windows open, wall cavities that feel warm to the touch in summer, and old newspaper or dust falling from a disintegrating attic are all signs the existing insulation has failed or was never there in the first place.
What it costs in Hollywood
Hollywood wall dense-pack with cellulose typically runs $1.50 to $3.50 per square foot depending on cavity depth and access.
How we do it
We core holes through interior or exterior plaster at regular intervals, dense-pack GreenFiber cellulose to a consistent 3.0 to 3.5 pounds per cubic foot, then patch and seal each hole to match the surrounding surface.
Blown In Attic Insulation
Signs you need it
An attic floor with less than six inches of existing material, upstairs rooms that run ten degrees warmer than the ground floor, and air conditioning that never seems to shut off during a Hollywood summer.
What it costs in Hollywood
Blown in attic insulation in Hollywood typically costs $1.00 to $3.00 per square foot installed, with existing material removal adding $0.50 to $1.50 per square foot.
How we do it
We air-seal visible bypasses around light fixtures and wall top plates, verify the knob-and-tube situation, then blow loose-fill fiberglass or cellulose to the target R-value across the full attic floor, keeping baffles clear at the eaves.
What Blown In Insulation Costs in Hollywood
| Item | Typical range in Hollywood |
|---|---|
| Blown in attic insulation | $1.00 – $3.00 per sq ft |
| Wall dense-pack (cellulose) | $1.50 – $3.50 per sq ft |
| Existing attic material removal | $0.50 – $1.50 per sq ft |
Is blown in insulation worth it in Hollywood’s climate?
Yes. Hollywood’s cooling season runs roughly May through October, and blown in insulation slows the ceiling and wall heat gain that drives most of that load. In a 1920s bungalow, the difference in afternoon indoor temperature after a proper attic upgrade is noticeable within the first week.
Can you insulate walls without opening them up in Hollywood?
In most cases, yes. We dense-pack through small drilled holes from the exterior stucco or interior plaster, which means tenants can stay in place and the building’s original detailing stays intact. Call (855) 382-3451 for a site-specific answer.
Brands We Service in Hollywood
We carry Owens Corning and Johns Manville fiberglass, GreenFiber recycled cellulose, and Demilec spray foam for Hollywood jobs. Stock is held at our Van Nuys yard, so most Hollywood installs can be scheduled without waiting on a manufacturer shipment. Visit our brands for the full material lineup.
Pricing for Insulation Company in Hollywood, CA
| Service | Typical range in Hollywood |
|---|---|
| Blown in attic insulation | $1.00 – $3.00 per sq ft |
| Wall dense-pack (cellulose) | $1.50 – $3.50 per sq ft |
| Existing attic material removal | $0.50 – $1.50 per sq ft |
| Air sealing (whole house) | $400 – $1,200 |
| Spray foam, open-cell wall cavity | $1.50 – $3.00 per sq ft |
| Spray foam, closed-cell (R-21+) | $2.50 – $5.00 per sq ft |
| Attic air sealing | $300 – $900 |
| Radiant barrier | $0.75 – $1.50 per sq ft |
What pushes price up in Hollywood is building age: knob-and-tube remediation, plaster repair around access holes, and short-term-rental scheduling constraints all add labor time on older properties. Every quote we write is a fixed line-item price before work starts, so the number on the estimate is the number on the invoice.
Neighborhoods We Serve in Hollywood
We work throughout the 90028 ZIP code and the surrounding foothills, including the bungalow courts and apartment blocks that define central Hollywood. Typical response time for a Hollywood estimate is one to three business days, with faster scheduling for attic and wall jobs under 2,000 square feet.
- Hollywood Dell
- Whitley Heights
- Beachwood Canyon (lower slope)
- Melrose Hill
- Hancock Park (Hollywood edge)
Service Area – Cities Near Hollywood
In addition to Hollywood, Thermal Insulation Co regularly works in the communities directly around the 101 and along the basin edge. We handle blown in, attic, and spray foam jobs in Universal City, CA, West Hollywood, CA, Koreatown, CA, and Echo Park, CA, where the housing stock is similar in age and construction style to Hollywood’s.
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 estimates are scheduled within one to three business days, and attic-only jobs can often be installed within a week of approval. Dense-pack wall work on occupied short-term rentals takes longer because we coordinate around guest calendars. Call (855) 382-3451 for current scheduling.
Many Hollywood bungalow courts and apartment buildings have HOA-style rules affecting any work on shared walls, exterior drilling, or common attics. We will flag what needs written approval during the estimate and provide the scope-of-work descriptions boards usually request. Single-family homes on individual lots rarely need anything beyond a standard permit for structural work, which most insulation retrofits do not trigger.
Yes. We regularly insulate units that are listed as short-term stays, which means scheduling around bookings rather than asking a landlord to take a unit offline for a week. Dense-pack wall work is the best fit there because it is done in one to two days per unit and keeps the interior mostly intact.
If your Hollywood home, bungalow court, or apartment building needs an insulation assessment, call (855) 382-3451 for a free estimate. We will tell you which material and method make sense for your building, not just what we happen to stock that week.
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 same-day.
- 4You approve before work beginsNothing starts until you say go.
What Hollywood Customers Say
"Handled the utility rebate paperwork, which knocked a real amount off the final cost."
— Chris Kowalski"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Gabriela Rodriguez"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."
— Maya Singh