Insulation Company in North Hollywood, CA
Blown in insulation is the most common retrofit we install in North Hollywood, and for good reason: much of the housing stock here dates to the 1920s through 1950s, with attics that were never insulated or have settled to near zero R-value. Hollywood Insulation Co has served North Hollywood since 2018, specializing in the three methods that actually match this Valley climate: attic insulation, spray foam, and blown-in. If your summer cooling bill is out of control and the upstairs feels 15 degrees hotter than the living room, call us at (866) 605-6949 for a free estimate.
Why North Hollywood Homes Are Different
North Hollywood is a San Fernando Valley heat island where summer attic temperatures regularly exceed 150°F. That’s not a guess – it’s what our techs measure with infrared thermometers on July afternoons in the 91601 and 91602 ZIP codes. The housing stock compounds the problem. Most of the single-family homes south of Burbank Boulevard and west of Lankershim are pre-1978 stucco-over-wood-frame bungalows, many with original single-pane windows and flat or low-pitch roofs that bake all day. We also work a lot of dingbats and low-rise apartments from the 1960s and 70s, which typically have uninsulated attic cavities and uninsulated wall cavities behind the stucco.
What this means for insulation work is specific. Blown-in fiberglass alone often isn’t enough for the flat-roof bungalows south of Magnolia, where roof decks get so hot you can’t hold a hand on the ceiling. Those jobs need the full treatment: air sealing, radiant barrier where the roof assembly allows, upgraded ventilation, and then blown-in insulation to hit a real R-value. We also see a lot of knob-and-tube wiring in the original 1920s attics, which changes how we approach blowing insulation around electrical junctions – that’s a safety and code issue most general contractors miss.
Our Main North Hollywood Services
Two services account for most of the calls we get from North Hollywood homeowners, and each one solves a different version of the same Valley problem: heat gain in summer and heat loss during the occasional winter cold snap.
Attic Insulation in North Hollywood
Most North Hollywood attics we open have either no insulation or a thin layer of 1940s rock wool that’s compressed to nothing. Attic insulation here means removing or topping that old material, air sealing the top plates and penetrations, and installing a clean new layer at the depth that hits the recommended R-value for the inland Valley climate zone. Flat-roof homes south of Burbank are a specialty of ours because they’re the worst heat traps in the neighborhood. See the full scope at Attic Insulation in North Hollywood.
Spray Foam Insulation in North Hollywood
For North Hollywood homes with uninsulated walls or roof decks that can’t be vented, spray foam is often the only method that gets an even result. We install both open-cell and closed-cell systems, including Spray Foam Insulation in North Hollywood applications for the flat-roof bungalows and 1960s apartment buildings that dominate the area. Closed-cell foam adds structural rigidity and a moisture barrier, which matters on older stucco assemblies that have been patched and repainted for 70 years.
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 fastest, least disruptive retrofit for the 1920s-to-1950s attics that define North Hollywood, and it’s the service we recommend first when the roof deck is vented and the attic is accessible. In this Valley climate, the specific problem is radiant heat from a 150°F attic pushing down through the ceiling plane – blown-in fiberglass or cellulose at the right depth cuts that heat transfer dramatically. We install blown-in fiberglass and cellulose using both the CertainTeed and GreenFiber systems, and the result is a measurable drop in upstairs temperature within 48 hours of installation. If you want to understand the full method, see Blown In Insulation for the complete service breakdown.
Cellulose Insulation
Signs you need it
Your attic has old, settled insulation that measures under R-19, or you see bare spots between joists where the original material has shifted or blown away.
What it costs in North Hollywood
Blown in cellulose for a typical 1,200-square-foot North Hollywood attic runs $1,450 to $2,500, including removal of the old compacted layer.
How we do it
We remove the compromised old material, air seal the ceiling plane penetrations, and blow GreenFiber cellulose to a consistent depth that meets the R-value target for the inland Valley zone.
Blown In Fiberglass Insulation
Signs you need it
Rooms under the attic run 10 to 15 degrees hotter than the rest of the house in summer, or you feel warm air radiating from the ceiling after sunset.
What it costs in North Hollywood
Blown in fiberglass for the same North Hollywood attic typically runs $1,150 to $1,950, depending on target depth and how much old material needs to be removed first.
How we do it
We blow CertainTeed loose-fill fiberglass to the specified depth, working around the knob-and-tube wiring carefully where it’s still present in pre-1950 attics.
What Blown In Insulation Costs in North Hollywood
| Item | Typical range in North Hollywood |
|---|---|
| Blown in cellulose (1,200 sq ft attic) | $1,450 – $2,500 |
| Blown in fiberglass (1,200 sq ft attic) | $1,150 – $1,950 |
| Old insulation removal & haul-off | $400 – $800 |
Is blown in insulation worth it in North Hollywood?
Yes. The combination of 100°F-plus summer days and attics that hit 150°F means attic insulation pays back faster here than almost anywhere in Los Angeles County, often within two to three cooling seasons.
Can you blow insulation into walls in North Hollywood?
For most stucco bungalows, yes – we drill and dense-pack from the exterior or interior, then patch to match. Knob-and-tube homes need an electrical safety check first, so call (866) 605-6949 to confirm your wall cavities are eligible.
Brands We Service in North Hollywood
Hollywood Insulation Co carries and installs eight manufacturer brands across every major insulation category. For North Hollywood projects, the ones we spec most often are Rockwool mineral wool for fire resistance on older stucco buildings, Icynene open-cell foam for roof decks, and GreenFiber cellulose for the pre-1960s attics where recycled-content material is a priority. Common products are stocked locally, which means most North Hollywood jobs start within a week. See our brands for the full lineup.
Pricing for Insulation Company in North Hollywood, CA
| Service | Typical range in North Hollywood |
|---|---|
| Attic insulation – fiberglass batt (1,200 sq ft attic) | $1,500 – $2,800 |
| Attic insulation – blown in fiberglass | $1,150 – $1,950 |
| Attic insulation – blown in cellulose | $1,450 – $2,500 |
| Attic air sealing (with insulation) | $300 – $700 |
| Spray foam – open-cell (1,200 sq ft attic, 5.5 in) | $2,900 – $4,800 |
| Spray foam – closed-cell (1,200 sq ft attic, 3 in) | $3,800 – $6,900 |
| Blown in insulation – walls (per 1,000 sq ft) | $1,800 – $3,200 |
| Old insulation removal & haul-off | $400 – $800 |
Flat-roof North Hollywood homes push prices toward the top of these ranges because roof decks need different access and often additional ventilation work before insulation goes in. Every job we quote is scope-specific, and the estimate we give you is the price you pay – no add-on surprises.
Neighborhoods We Serve in North Hollywood
We work the full span of North Hollywood, from the NoHo Arts District up through the older residential blocks south of Magnolia and the apartment-dense streets around Valley Plaza. Our response time for estimates in the 91601 through 91606 ZIP codes is typically same-week, with emergency attic insulation work available on a shorter schedule.
- NoHo Arts District
- Valley Village border blocks
- South of Magnolia (the 1920s bungalow zone)
- Valley Plaza area
- West of Lankershim (1940s-50s tract homes)
Service Area – Cities Near North Hollywood
We also serve the surrounding Valley cities with the same crew and the same brand lineup. That includes Studio City, CA just to the south, Universal City, CA over the hill, Burbank, CA to the east, and Valley Glen, CA to the west. If you’re unsure whether your home falls in our service area, call (866) 605-6949 and we’ll tell you straight.
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
Most North Hollywood homeowners get an estimate within three to five business days of calling. We schedule in ZIP-code batches, so if we’re already in 91601 or 91602 that week, we can often add your home to the route same-day. Call (866) 605-6949 to check the current schedule.
For most retrofit attic and wall insulation, no building permit is required in Los Angeles. The exception is spray foam on certain roof assemblies, where the city may require a permit depending on scope – we’ll tell you at the estimate stage exactly what your specific home needs.
Yes. Pre-1950 North Hollywood homes often still have knob-and-tube circuits in the attic, and we know how to work around them safely – which means flagging the wiring before we blow insulation, not after. We’ll coordinate with a licensed electrician if your attic needs remediation before insulating.
Need someone who knows North Hollywood attics, walls, and roof decks? Call Hollywood Insulation Co at (866) 605-6949 for a free, specific estimate – no pressure, just the right method for your home.
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 30–60 min.
- 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."
— Heather Walsh"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."
— Cole Sullivan"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Brandon Wong