Insulation Company in North Hollywood, CA
Blown in insulation solves a problem North Hollywood homeowners know too well: rooms that roast in the afternoon and never seem to cool down at night. The 1920s through 1950s bungalows that line the streets of the 91601, 91602, and 91605 ZIP codes were built when insulation was an afterthought, and the Valley heat punishes that oversight every summer. Comfort Zone Insulation Co has served North Hollywood since 2012, and we install insulation and nothing else. Call (855) 341-7856 for a free estimate.
Why North Hollywood Homes Are Different
North Hollywood sits in the hotter eastern San Fernando Valley, where 95°F-plus summer afternoons turn attics into ovens. The dominant housing stock is 1920s – 1950s single-story stucco bungalows and 1960s – 70s low-rise apartment buildings, many of which still have their original thin attic insulation or none at all. Wall cavities from the knob-and-tube era were often never insulated, because the climate historically didn’t demand it. That has changed.
The real insulation problem here is summer heat gain, not winter cold. A low-pitch, vented attic on an old NoHo bungalow bakes in the Valley sun, and that radiant heat pushes down into the living space all afternoon. When wildfire smoke settles over the east Valley, that same attic is exactly where unfiltered smoke and fine ash leak into the home unless air sealing and insulation go in together. Our local technicians know these attics, and they know which material fits each one.
Our Main North Hollywood Services
North Hollywood homeowners call us most about two jobs: attics that need attention and walls that need air sealing. Here is what each involves in this part of the Valley.
Attic Insulation in North Hollywood
Your attic is the single highest-impact insulation zone in most North Hollywood homes, especially those 1920s – 1950s bungalows with low-pitch roofs that absorb Valley sun all day. A dedicated attic insulation job here means assessing what is already up there, air sealing the bypasses that let smoke and dust into the living space, and then bringing the attic floor to a level that actually holds temperature. We carry Owens Corning, Johns Manville, Knauf, and Rockwool products, so the material matches the house, not whatever we happen to have on the truck. Learn more about Attic Insulation in North Hollywood.
Spray Foam Insulation in North Hollywood
Spray foam earns its place in North Hollywood when a homeowner wants air sealing and insulation in one step. The old wall cavities in those pre-war bungalows never got insulated, and dense-pack or spray foam is often the only practical way to fill them without tearing out drywall. In attic rooflines, closed-cell foam also helps block smoke infiltration during fire season. We install Icynene and Demilec systems, two of the most recognized open- and closed-cell product lines in North America. Learn more about Spray Foam Insulation in North 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 North Hollywood
Blown in insulation is the most common retrofit we perform in North Hollywood, because it works with the housing stock here rather than against it. Those 1920s – 1950s stucco bungalows and 1960s – 70s apartment buildings almost always have attics that are accessible, under-insulated, and overdue for an upgrade. Loose fill goes in fast, covers irregular joist bays cleanly, and immediately slows the summer heat gain that makes Valley afternoons brutal. For homes with open wall cavities, dense-pack cellulose gives those uninsulated walls their first real thermal barrier. Learn more about our full Blown In Insulation work.
Cellulose Insulation
Signs you need it
You can see the tops of your attic joists because the existing insulation has settled to less than a few inches deep.
What it costs in North Hollywood
Cellulose insulation in North Hollywood typically runs $1.00 – $1.55 per square foot installed, with most 1,200-square-foot attics landing between $1,200 and $1,860.
How we do it
We dense-pack or loose-fill recycled cellulose into the attic or wall cavities, hitting the target R-value and air-sealing bypasses as we go.
Blown In Attic Insulation
Signs you need it
Rooms under the attic stay hot well into the evening even after the outside temperature drops.
What it costs in North Hollywood
Blown in attic insulation in North Hollywood typically costs $1.00 – $1.85 per square foot, or $1,200 – $2,220 for a standard 1,200-square-foot attic at R-38.
How we do it
We remove or top up the existing material, air-seal plumbing and electrical penetrations, and blow loose fill to the depth that matches your home’s needs.
Blown In Cellulose Insulation
Signs you need it
Your attic insulation is decades old, compressed, and full of dust, or you want a recycled-content material without sacrificing thermal performance.
What it costs in North Hollywood
Blown in cellulose insulation in North Hollywood falls in the same $1.00 – $1.55 per square foot range, depending on whether the job is attic-only or includes wall cavities.
How we do it
We use GreenFiber blown-in cellulose, a recycled-content product, and dial in the density for the cavity or attic space we are filling.
Blown In Fiberglass Insulation
Signs you need it
You want a lightweight, cost-effective loose fill that will not settle as much as older cellulose products.
What it costs in North Hollywood
Blown in fiberglass insulation in North Hollywood runs $0.90 – $1.35 per square foot, so a 1,200-square-foot attic lands between $1,080 and $1,620.
How we do it
We blow Owens Corning or Knauf fiberglass loose fill to the specified depth, using netting for sloped sections where needed.
Loose Fill Insulation
Signs you need it
Your attic has shallow or uneven coverage, and you want a material that fills gaps and conforms to odd joist spacing.
What it costs in North Hollywood
Loose fill insulation in North Hollywood ranges from $0.90 – $1.85 per square foot depending on material and depth.
How we do it
We prepare the attic, air-seal the major bypass points, and blow loose fill to an even depth that meets your target R-value.
What Blown In Insulation Costs in North Hollywood
| Item | Typical range in North Hollywood |
|---|---|
| Blown in fiberglass, attic only | $0.90 – $1.35 per sq ft |
| Blown in cellulose, attic only | $1.00 – $1.55 per sq ft |
| Standard 1,200 sq ft attic, R-38 | $1,080 – $2,220 |
Can you blow insulation over old insulation in North Hollywood?
Yes, in most attics we can blow new loose fill directly over the old material after checking for moisture, mold, and electrical issues, and after air-sealing the major bypasses. Call (855) 341-7856 for a quick attic assessment.
How long does blown in insulation last in a Valley attic?
Cellulose and fiberglass loose fill both hold their R-value for decades when the attic stays dry and undisturbed. The roof heat in North Hollywood does not degrade the material itself, though settling may reduce depth slightly over time.
Brands We Service in North Hollywood
Comfort Zone Insulation Co carries Owens Corning, Johns Manville, Knauf, and Rockwool products, so you are not limited to whatever we happened to order this week. We stock common loose-fill and batt materials locally, which keeps most North Hollywood jobs moving within days. See our brands for the full picture.
Pricing for Insulation Company in North Hollywood, CA
| Service | Typical range in North Hollywood |
|---|---|
| Blown in fiberglass, attic only | $0.90 – $1.35 per sq ft |
| Blown in cellulose, attic only | $1.00 – $1.55 per sq ft |
| Blown in attic insulation (R-38) | $1.00 – $1.85 per sq ft |
| Loose fill insulation | $0.90 – $1.85 per sq ft |
| Standard 1,200 sq ft attic | $1,080 – $2,220 |
In North Hollywood, the price pushes up when the attic has old knob-and-tube wiring that needs to be worked around, when the access hatch is small or difficult, or when we are adding wall cavity fill rather than attic-only coverage. You get an upfront price before we start, so there are no surprises on the day of the job.
Neighborhoods We Serve in North Hollywood
We work across every ZIP code in North Hollywood: 91611, 91612, 91615, and 91616. Our crews are usually in the area within one to two business days for estimates, and same-week scheduling is common for standard attic jobs.
- Valley Village
- NoHo Arts District
- Amelia Earhart neighborhood
- West Toluca Lake
- Greater Toluca Lake
Service Area – Cities Near North Hollywood
Comfort Zone Insulation Co serves North Hollywood and the surrounding San Fernando Valley communities, including Studio City, CA, Universal City, CA, Burbank, CA, and Valley Glen, CA. If you are in one of these areas and your attic is due for a look, the same crew that works North Hollywood will handle your job.
Serving North Hollywood, CA — Our Local Coverage Area
We’re based in the North 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 North Hollywood
We typically schedule estimates within one to two business days in North Hollywood, and standard attic insulation jobs can often be completed the same week. Emergency or rush scheduling depends on the season and crew availability. Call (855) 341-7856 and we will give you a straight answer.
Most attic insulation and air sealing jobs in North Hollywood do not require a permit, since they are considered maintenance rather than structural work. If your job involves wall cavity fill or spray foam in certain assemblies, we will tell you upfront whether any city approval is needed before we start.
Yes, we handle both single-family homes and the 1960s – 70s low-rise apartment buildings that make up a large part of North Hollywood’s housing stock. Communal attics and shared walls require coordination with building management, and we are experienced at scheduling around those constraints.
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 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What North Hollywood Customers Say
"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Vivian Kim"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."
— Dustin Sullivan"Handled the utility rebate paperwork, which knocked a real amount off the final cost."
— Marco Morales