Insulation Company in Hollywood, CA
Blown in insulation solves Hollywood’s most common problem: walls and attics in 1910s bungalows and 1920s fourplexes that were never insulated at all. In 90028, that means rooms that bake on summer afternoons, tenants who can hear every conversation next door, and utility bills that climb while comfort doesn’t. Porch Light Insulation has served Hollywood since 2014, matching fiberglass, cellulose, and mineral wool to each building rather than forcing whatever’s on the truck. Call (877) 521-4987 when you’re ready to fix it right.
Why Hollywood Homes Are Different
Hollywood’s housing stock reads like a timeline of Southern California construction, and most of it predates insulation codes. The 1910s-1930s wood-frame bungalows and Spanish duplex conversions along streets like Fountain and Harold Way were built for mild weather, so original walls are often empty. Mid-century stucco apartment blocks from the 1950s and 60s usually share a different problem: a paper-thin party wall between units with zero acoustic separation. When one tenant complains about heat and the neighbor complains about noise, you’re often looking at the same missing insulation.
Climate shapes the work too. Hollywood sits inland enough to catch real afternoon heat, and flat and low-slope roofs common on older fourplexes absorb it directly. Radiant heat transfer through the attic is the dominant load, not the deep cold you’d insulate against in New England. Add lath-and-plaster walls that complicate dense-pack blowing, knob-and-tube-era wiring that requires careful clearance work, and rent-control realities that push owners toward minimally invasive upgrades, and you have a job profile unlike anywhere else in LA.
Our Main Hollywood Services
Most Hollywood homeowners call us about two things: hot attics and walls that leak air or noise. Both services below have been shaped by 90028’s specific housing stock.
Attic Insulation in Hollywood
Attics over Hollywood bungalows and flat-roof fourplexes are rarely empty, but they’re rarely doing their job either. We regularly find scattered 2-inch batts, compressed loose fill from the 1980s, and open cavities over top-floor units that turn bedrooms into ovens by 3 p.m. In 90028, attic insulation is less about winter heat loss and more about blocking afternoon radiant heat from getting through the ceiling plane. Upgrading here usually means blowing cellulose or fiberglass over what exists after air-sealing the top plates and can lights. For the full breakdown of materials and methods, see Attic Insulation in Hollywood.
Spray Foam Insulation in Hollywood
Spray foam earns its keep in Hollywood where air leaks are stubborn: band joists on raised bungalow foundations, rim cavities in flat-roof conversions, and the awkward soffit returns of mid-century apartment blocks. Closed-cell foam, including lines from Demilec, delivers high R-value per inch plus a vapor and air barrier in one pass, which matters when you’re working inside a 2×4 wall cavity with no sheathing upgrade planned. Units near the hills can also benefit where ember intrusion through soffit gaps is a wildfire-season concern. The method comparison lives here: 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 the workhorse for Hollywood’s older buildings. Dense-packed into empty wall cavities of 1920s bungalow courts or blown loose across attic floors of 1950s stucco fourplexes, it retrofits insulation into assemblies that were never designed for it without tearing out lath-and-plaster or displacing rent-controlled tenants. In a neighborhood where party walls carry noise complaints between units and flat roofs amplify afternoon heat, blown-in material also doubles as acoustic separation and radiant-heat protection. If you’re weighing options, our Blown In Insulation hub page compares materials and methods side by side.
Cellulose Insulation
Signs you need it
Your top-floor rooms run 10 degrees hotter than the rest of the unit, or you can hear a neighbor’s phone conversation through the wall.
What it costs in Hollywood
Dense-packed cellulose in existing walls typically runs $1.80 to $3.50 per square foot, while loose-fill attic work lands between $1.20 and $2.40 per square foot in Hollywood.
How we do it
We drill access holes through siding or interior plaster, dense-pack the cavity at the right pressure to avoid settling, then patch and texture-match the access points.
Loose Fill Insulation
Signs you need it
Your attic has less than 6 inches of existing insulation, or you can see bare ceiling joists poking through what’s there.
What it costs in Hollywood
Loose-fill fiberglass blown across an attic floor in Hollywood typically runs $1.00 to $2.10 per square foot depending on target depth.
How we do it
We air-seal penetrations first, then blow loose fill to a measured depth with baffles at the eaves so soffit ventilation stays functional.
What Blown In Insulation Costs in Hollywood
| Item | Typical range in Hollywood |
|---|---|
| Loose-fill attic insulation (fiberglass or cellulose) | $1.00 – $2.40 per sq ft |
| Dense-packed wall insulation (existing homes) | $1.80 – $3.50 per sq ft |
| Blown-in blanket / BIBS (new construction) | $2.20 – $4.00 per sq ft |
Does blown in insulation help with neighbor noise in Hollywood apartments?
Yes. Dense-packed cellulose in a shared party wall measurably reduces sound transfer between units, which is why we recommend it for the zero-insulation walls common in 1920s Hollywood fourplexes and bungalow courts. It won’t eliminate impact noise entirely, but it cuts airborne sound significantly.
Can you blow insulation into Hollywood walls without removing the plaster?
Yes, that’s the standard method here. We drill small access holes from the exterior or interior, blow material into the empty stud cavity, then patch the holes. It’s minimally invasive, which matters when tenants are staying in place during the work.
Brands We Service in Hollywood
We install and service insulation from CertainTeed, Icynene, Demilec, and GreenFiber, among our eight brand lines. That means we can quote fiberglass batts, dense-pack cellulose, open-cell foam, and closed-cell foam from the same estimate rather than steering you toward whatever’s left in the warehouse. Most materials are available within days, not weeks. See the full lineup at our brands.
Pricing for Insulation Company in Hollywood, CA
| Service | Typical range in Hollywood |
|---|---|
| Loose-fill attic insulation | $1.00 – $2.40 per sq ft |
| Dense-packed wall insulation | $1.80 – $3.50 per sq ft |
| Blown-in blanket (BIBS) | $2.20 – $4.00 per sq ft |
| Open-cell spray foam | $1.20 – $2.80 per sq ft |
| Closed-cell spray foam | $2.50 – $5.50 per sq ft |
| Spray foam in existing walls | $3.00 – $6.00 per sq ft |
| Fiberglass batt installation | $0.90 – $2.10 per sq ft |
| Mineral wool batt installation | $1.60 – $3.40 per sq ft |
| Air sealing (as part of insulation job) | $0.50 – $1.20 per sq ft |
In Hollywood, two things push prices up: lath-and-plaster walls that slow down wall-blowing access, and tight parking or second-story access on apartment blocks that adds setup time. Every quote we give is line-itemed and fixed before work starts, so the number you approve is the number you pay.
Neighborhoods We Serve in Hollywood
We work throughout 90028 and the surrounding blocks, from the bungalow courts east of Vine to the mid-century apartments near Fairfax and the hillside streets off Beachwood. Our crews know the difference between a 1913 wood-frame on Las Palmas and a 1962 stucco fourplex on Cherokee, and we quote accordingly.
- Hollywood Heights
- Spaulding Square
- Thai Town
- Sunset Strip corridor
- East Hollywood (western edge, 90028)
For most Hollywood jobs we can schedule an estimate within a few business days, with installation typically following within two weeks.
Service Area – Cities Near Hollywood
Porch Light Insulation is based in Universal City, CA, and serves Hollywood plus the surrounding communities. We regularly work in West Hollywood, CA on similar apartment-block insulation problems, in Koreatown, CA where 1930s brick and stucco buildings share the same wall-cavity challenges, and in Echo Park, CA on hillside homes with attic and floor insulation needs.
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
We schedule estimates in Hollywood within a few business days in most cases, and installation usually starts within two weeks of an approved quote. For urgent situations like a recently exposed wall cavity during a remodel, call (877) 521-4987 and we’ll do what we can to work you in sooner.
Most retrofit insulation jobs in 90028 don’t require a permit, because we’re not changing the building envelope or structural assemblies. Where a project touches new construction or a major remodel, the responsible contractor or architect typically handles permitting, and we work off the approved plans.
We cover the full 90028 ZIP code and adjacent blocks. That includes hillside streets, bungalow courts, mid-century apartments, and everything between. If you’re on the edge of 90028, call (877) 521-4987 and we’ll confirm whether you’re in our service area.
When you’re ready to talk through what’s actually going on in your walls or attic, call (877) 521-4987 for a free estimate. We’ll look at the building, explain which material fits, and give you a fixed number before any work begins.
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 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."
— Ruben Garcia"Handled the utility rebate paperwork, which knocked a real amount off the final cost."
— Adam Parker"Installed baffles at the soffits so the new insulation didn't block the ventilation, which the previous contractor apparently never considered."
— Cole Rhodes