Insulation Company in North Hollywood, CA
Blown in insulation is the most common retrofit we install in North Hollywood, and for good reason: most homes here were built between the 1920s and 1950s, when wall and attic cavities were left empty or filled with whatever was cheapest at the time. Add San Fernando Valley summers that push attic temperatures past 140°F, and you get rooms that never hold a steady temperature. We match the material to the job – not the job to whatever we have on the truck. Call (855) 773-6429 to get someone out to look at your specific house.
Why North Hollywood Homes Are Different
North Hollywood’s housing stock creates insulation problems you won’t find in newer parts of LA. The pre-war bungalows east of Lankershim and throughout the 91605 and 91606 ZIPs typically have wood-frame construction with empty wall cavities. Many of those same attics have no soffit or ridge vents at all, so heat has nowhere to go. We routinely find superheated 140°F+ attics cooking the living space below, and in those cases ventilation has to be addressed before blown-in insulation will perform as rated. The newer mid-rise buildings along the NoHo arts district are a different story: they were built to modern code with insulated assemblies already in place. But they’re the minority. Most of North Hollywood is older single-family stock that was built before insulation was required by code, and it shows up in July and August as rooms that drift ten to fifteen degrees above the thermostat setting. The Valley’s diurnal swing matters too. A 105°F day followed by a 48°F night means attic insulation isn’t just a summer upgrade; it’s what keeps heat in during December and January nights too.
Our Main North Hollywood Services
North Hollywood homeowners call us most about two jobs: getting attics insulated correctly for the Valley heat, and using spray foam where older framing and awkward cavities make other materials a poor fit.
Attic Insulation in North Hollywood
Attic work in North Hollywood almost always starts with an assessment of what’s already up there. In the 1920s bungalows, that’s often nothing but a few inches of settled dust from the Coolidge administration. In 1950s tract homes, it might be fiberglass batts that were installed facing the wrong direction or compressed under plywood storage decks. The local condition that changes everything is the unvented attic. When there’s no soffit or ridge venting, adding high-R material without fixing airflow just bakes the insulation until it stops performing. We handle the ventilation correction and the insulation in one pass, using materials from Owens Corning, Johns Manville, Knauf, and CertainTeed depending on the assembly. Read the full breakdown here: Attic Insulation in North Hollywood.
Spray Foam Insulation in North Hollywood
Some North Hollywood homes are poor candidates for batts or blown-in material because of tight framing, irregular joist spacing, or additions that left impossible-to-reach cavities. Spray foam solves those, and we carry both open-cell and closed-cell chemistries from Icynene and Demilec. Open-cell works well for interior walls and sound control between units in the duplexes and small apartment buildings common around the arts district. Closed-cell earns its cost in rim joists and crawlspaces where moisture and air sealing matter. We pick the foam chemistry based on the application, not on what’s easiest to spray. Details on pricing and applications: 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 fastest way to fix an under-insulated attic in North Hollywood, especially in pre-war bungalows and 1950s tract homes where the cavities are open and accessible. Most NoHo houses built before 1960 have either no attic insulation or a thin layer that’s settled into near-uselessness, and the Valley’s 100°F+ summer days make that an expensive problem. Loose fill gets into the irregular spaces of older wood-frame construction far better than batts ever will, which is why it’s our default recommendation for retrofit attics here. For more on the method itself, see our Blown In Insulation service page.
Cellulose Insulation
Cellulose is our go-to for North Hollywood attics with irregular joist spacing and lots of obstructions. It’s made from recycled paper treated with fire retardants, and it settles into cavities batts can’t reach. We install GreenFiber cellulose, which carries a Class 1 fire rating and performs well in the Valley’s dry heat when attic ventilation is adequate. The material’s density also helps with sound transfer between rooms, which matters in the converted duplexes and add-on units scattered through the 91611 and 91612 ZIPs.
Signs you need it
Rooms directly under the attic run 10°F hotter than the rest of the house in summer, or you can see bare drywall between joists when you peek into the attic hatch.
What it costs in North Hollywood
Cellulose attic insulation in North Hollywood typically runs $1.50 – $2.80 per square foot installed, depending on depth and access.
How we do it
We seal air leaks at the attic floor first, verify or add ventilation, then blow cellulose to the target R-value using calibrated hoses and a second crew member checking depth with a ruler.
Blown In Fiberglass Insulation
Blown in fiberglass works well in North Hollywood attics where homeowners want a material that won’t settle as much over time. It’s lighter than cellulose per R-value and doesn’t hold moisture, which matters in the occasional winter rain when a roof leak goes unnoticed. The material comes from Owens Corning and Johns Manville, and we install it at slightly lower cost per R than cellulose in most cases. It’s a strong choice for the flat-roof remodels common east of Lankershim.
Signs you need it
Your attic has old batts that are compressed, torn, or mouse-damaged, and the temperature swings between upstairs and downstairs rooms keep widening each year.
What it costs in North Hollywood
Blown in fiberglass attic insulation in North Hollywood typically runs $1.30 – $2.80 per square foot installed.
How we do it
We remove or work around any existing batts, seal penetrations, add venting if the attic is sealed, then blow fiberglass to a uniform depth marked on the joists.
What Blown In Insulation Costs in North Hollywood
| Item | Typical range in North Hollywood |
|---|---|
| Cellulose attic insulation | $1.50 – $2.80 per sq ft installed |
| Blown in fiberglass attic insulation | $1.30 – $2.80 per sq ft installed |
| Air sealing before blow-in (per attic) | $400 – $900 |
Is blown in insulation worth it in a 1920s North Hollywood bungalow?
Usually, yes. Older bungalows lose most of their heat through the attic, and blown-in fills the odd framing bays that batts can’t. The payback on energy bills in North Hollywood’s climate is typically faster than in coastal LA because of the Valley’s temperature extremes.
How long does blown in insulation take in North Hollywood?
Most attic jobs in North Hollywood are done in half a day, including prep and cleanup. Larger attics or those needing ventilation work can take a full day. Call (855) 773-6429 for an exact quote – estimates are free.
Brands We Service in North Hollywood
We stock insulation from eight manufacturers, including Rockwool mineral wool, CertainTeed fiberglass, Icynene and Demilec spray foam, and GreenFiber cellulose. Most parts are in our local inventory, so a standard attic job in North Hollywood doesn’t wait on a supplier order. See our brands for the full lineup.
Pricing for Insulation Company in North Hollywood, CA
Here’s what insulation work typically costs in North Hollywood, by service and material.
| Service | Typical range in North Hollywood |
|---|---|
| Cellulose attic insulation | $1.50 – $2.80 per sq ft installed |
| Blown in fiberglass attic insulation | $1.30 – $2.80 per sq ft installed |
| Attic air sealing | $400 – $900 per attic |
| Spray foam insulation | $0.80 – $2.50 per board foot |
| Batt insulation (material only, uninstalled) | $0.30 – $0.60 per sq ft |
| Insulated vinyl siding | $4 – $8 per sq ft installed |
| Fiber cement siding | $6 – $12 per sq ft installed |
| Vinyl siding | $3 – $7 per sq ft installed |
Prices push toward the higher end in North Hollywood when we’re working in unvented attics that need new soffit or ridge vents before insulation can go in, or when access requires removing and reinstalling a roof hatch or attic ladder. Every quote is upfront: you get a fixed price before any material hits your driveway, and no change orders unless you approve them in writing.
Neighborhoods We Serve in North Hollywood
We work across all of North Hollywood’s ZIP codes, including 91611, 91612, 91615, and 91616. Typical response time for an estimate visit is one to two business days.
- NoHo Arts District
- Valley Village edge
- Lankershim corridor
- West North Hollywood
- Toluca Woods
Service Area – Cities Near North Hollywood
We also handle insulation projects in nearby cities: Studio City, CA, Universal City, CA, Burbank, CA, and Valley Glen, CA. If you’re just outside North Hollywood proper, one of these pages likely covers your neighborhood. Or call us and we’ll tell you directly.
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 estimates in North Hollywood are scheduled within one to two business days, and we keep common materials in local inventory so installation can begin within a week for standard jobs. Emergency moisture or rodent-damage situations can sometimes be prioritized faster. Call (855) 773-6429 to check current scheduling.
Loose-fill and batt insulation in existing homes typically doesn’t require a permit in North Hollywood, but any structural changes, new venting cut into the roof, or work on new additions may. We’ll tell you what applies to your specific project at the estimate visit.
Yes. The same crews handle a 900-square-foot pre-war bungalow and a larger multi-unit property in the 91615 ZIP. The methods change with the framing and access, but the approach is the same: measure what’s there, fix the air and venting issues, then install the right material at the right depth.
If your North Hollywood house runs hot in summer and cold in winter, the attic is almost always the first place to look. Call Placentia Insulation at (855) 773-6429 for a free estimate, and we’ll give you a straight answer about what’s up there and what it’ll take to fix it.
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
"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."
— Rachel Sullivan"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Adriana Rodriguez"Handled the utility rebate paperwork, which knocked a real amount off the final cost."
— Gilbert Ramirez