Insulation Company in North Hills, CA
Blown in insulation is the most common retrofit we install in North Hills, and for good reason: this part of the San Fernando Valley runs hot, dry, and punishing on under-insulated attics. Most homes here were built in the 1950s and 60s with thin original batts that have long since settled or been disturbed by decades of remodels. We’re Laguna Hills Insulation, and we’ve served North Hills since 2014. Call (866) 393-6041 for a free estimate on bringing your attic’s R-value up to where a Valley summer actually demands it be.
Why North Hills Homes Are Different
North Hills sits in the San Fernando Valley’s hottest interior pocket. Summer temperatures routinely push past 100°F while winter mornings still dip near freezing, a swing that makes the attic and the uninsulated, sun-baked garage the real battleground for insulation here. Unlike coastal LA, this is scorching-dry heat and radiant load, not marine-layer mildness. The install has to beat heat gain through the roof deck as much as it holds warmth in January.
The housing stock in 91343 and 91393 compounds the problem. Mid-century single-story ranch and stucco tract homes dominate, many with low-slope roofs that bake in direct sun all afternoon. A large share have been added onto or converted over the years, leaving patchwork insulation coverage. We regularly find attic spaces where a 1980s addition meets the original 1958 structure, and the insulation stops exactly at the seam. Garage conversions are especially common here, and many Valley crews end up re-sealing and re-insulating these spaces because the original work was done without attention to air movement or thermal bridging.
In summer, North Hills attic temperatures can hit 140 to 150°F. That’s why we schedule attic work at dawn whenever possible. It’s also why we find sun-cooked, crumbling duct insulation that fails before the attic insulation itself does. The heat doesn’t just test your insulation. It tests every seam, every penetration, and every poorly sealed chase. A North Hills install has to be treated as an air-sealing job as much as a thermal job.
Our Main North Hills Services
North Hills homeowners call us most often about two things: attics that are bleeding conditioned air into a 140-degree roof cavity, and older homes that need a continuous air and thermal barrier. Here’s how each one works here.
Attic Insulation in North Hills
Most North Hills attics we open up have the original 1950s or 60s fiberglass batts, compressed, dirty, and nowhere near today’s code minimums. Add to that decades of remodel work that left unfilled cavities and gaps around can lights, and the attic becomes the single largest heat exchanger in the house. Attic insulation in North Hills means taking stock of what’s actually there, identifying where air is moving, and building a thermal boundary that holds up through both the summer bake and the occasional January freeze. We work with Owens Corning, Johns Manville, Knauf, and GreenFiber products, matching the material to the specific attic layout, not the other way around. Learn more about Attic Insulation in North Hills.
Spray Foam Insulation in North Hills
The radiant load on a North Hills roof deck is intense. Spray foam is the only insulation method that creates a true air barrier and a thermal barrier in a single application, which matters when your attic is hitting 150°F in August. Closed-cell foam also handles the Valley’s seasonal swing well, since its R-value holds steady even when temperature differentials get extreme. In North Hills, we commonly recommend spray foam for low-slope roofs, additions that were never sealed properly, and garage conversions that are fighting heat gain through the door header and side walls. See Spray Foam Insulation in North Hills for what this looks like in practice.
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 Hills
Blown in insulation solves a problem that defines North Hills housing: attics that were insulated once, decades ago, with thin batts that have now settled and stopped working. In a 1958 ranch house in 91343, the difference between R-19 and R-49 is the difference between an AC unit that cycles endlessly from June through October and one that actually keeps up. We blow cellulose from GreenFiber or fiberglass from Owens Corning and Johns Manville into attics across North Hills, reaching the corners and bays that batts never covered properly in the first place. This is the service hub for Blown In Insulation if you want to understand the method in depth.
Cellulose Insulation
Signs you need it
Your attic has settled batts, bare spots, or an upstairs that’s consistently 10 degrees hotter than the rest of the house.
What it costs in North Hills
Cellulose blown into a typical North Hills attic runs $1,500 to $2,800 depending on square footage and existing material removal.
How we do it
We air-seal the attic floor first, then dense-pack or loose-fill GreenFiber cellulose to a uniform R-38 to R-49 depth across every bay.
Blown In Attic Insulation
Signs you need it
Your attic insulation looks thin, uneven, or you can see the tops of the ceiling joists through what’s there.
What it costs in North Hills
Full blown in attic insulation for a typical 1,200 to 1,800 square foot North Hills home costs $2,000 to $3,500.
How we do it
We prep the attic, seal penetrations, and blow insulation to the target depth, checking coverage with a depth marker as we work.
Blown In Cellulose Insulation
Signs you need it
Your energy bills spike every summer and your rooms feel drafty even with the windows closed and the AC running.
What it costs in North Hills
Blown in cellulose alone, including removal of old material, runs $1,800 to $3,200 in the 91343 and 91393 ZIP codes.
How we do it
We remove or level old material, seal the attic plane, then blow GreenFiber cellulose to a consistent, verified R-value.
Blown In Fiberglass Insulation
Signs you need it
You want a blown-in product that won’t settle as much and carries a higher R-value per inch without going to spray foam.
What it costs in North Hills
Blown in fiberglass for a standard North Hills attic runs $1,700 to $3,400, with final cost tied to attic access and target R-value.
How we do it
We install Owens Corning or Johns Manville loose-fill fiberglass with specialized blowing equipment, layering it evenly to spec.
Loose Fill Insulation
Signs you need it
Your attic has irregular joist spacing, low clearances, or obstacles that make batt installation impractical.
What it costs in North Hills
Loose fill insulation for a North Hills attic runs $1,500 to $3,000 for a complete install including air sealing of the attic floor.
How we do it
We use the same blowing process as our other blown in applications, reaching into tight spots that batts and boards simply can’t fill.
What Blown In Insulation Costs in North Hills
| Item | Typical range in North Hills |
|---|---|
| Cellulose Insulation | $1,500 – $2,800 |
| Blown In Attic Insulation | $2,000 – $3,500 |
| Blown In Fiberglass Insulation | $1,700 – $3,400 |
Will blown in insulation make a real difference in a North Hills summer?
Yes, and dramatically so. Most North Hills homes have settled or original fiberglass batts at R-19 or less. Blowing in up to R-49 can cut attic-to-ceiling heat transfer by more than half, which is the single biggest lever for indoor comfort during Valley heat waves.
Can you blow in insulation over what’s already in my North Hills attic?
Often, yes, but we need to check what’s there first. If old batts are dry and not compressed, blowing over them works. If there’s moisture damage, rodent nesting, or deep settled material, we’ll remove and start clean. Call (866) 393-6041 and we’ll tell you what your attic actually needs.
Brands We Service in North Hills
We install blown in insulation from GreenFiber, Owens Corning, and Johns Manville, along with batts from Knauf where the project calls for them. The material is selected for the specific attic geometry and heat load of your North Hills home, not whatever happens to be on the truck. See our brands for the full lineup and material comparisons.
Pricing for Insulation Company in North Hills, CA
| Service | Typical range in North Hills |
|---|---|
| Cellulose Insulation | $1,500 – $2,800 |
| Blown In Attic Insulation | $2,000 – $3,500 |
| Blown In Cellulose Insulation | $1,800 – $3,200 |
| Blown In Fiberglass Insulation | $1,700 – $3,400 |
| Loose Fill Insulation | $1,500 – $3,000 |
What pushes a North Hills job toward the top of these ranges is usually access: a low-slope roof, a tight attic hatch, or a garage conversion with cathedral ceilings all add labor. The 150°F attic temperature in August doesn’t help either, which is why we schedule this work early and price it honestly up front. You get the exact number before we start, not after.
Neighborhoods We Serve in North Hills
Our crews work throughout North Hills, from the blocks around Sepulveda Boulevard and Nordhoff Street to the residential streets north of Rayen and west of the 405. The ZIP codes we cover are 91343 and 91393. Most blown in insulation jobs in these neighborhoods are completed in a single day.
- North Hills West
- North Hills East
- Sepulveda corridor
- Rayen Street area
- Parthenia Street corridor
Service Area – Cities Near North Hills
While we’re based in Laguna Hills, we run crews across the San Fernando Valley on a regular schedule. If you’re in Northridge, CA, Van Nuys, CA, Valley Glen, CA, or San Fernando, CA, we can quote and schedule most attic jobs within the same week, depending on the season and dawn-start availability.
Serving North Hills, CA — Our Local Coverage Area
We’re based in the North Hills 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 Hills
Most estimates in North Hills happen within two to three business days, and if your attic is accessible and the material is in stock, we can frequently install within the same week. Summer is our busiest season in the Valley, so call (866) 393-6041 early if you want work done before the next heat wave.
Blown in insulation is not a permit-triggering job in Los Angeles building code. What can trigger one is if you’re adding insulation to a garage conversion or an addition that was never permitted in the first place. We’ll flag any of that during the estimate, before any work starts.
Yes, and we see a lot of them in 91343. Most garage conversions in North Hills were done years ago with no attention to thermal bridging, so the room bakes in summer and chills in winter. We re-seal and re-insulate these spaces with blown in or spray foam depending on the existing framing and ceiling design.
If your North Hills attic is still working against you every summer, call (866) 393-6041. We’ll inspect what’s actually up there, tell you which material fits, and give you an upfront price. The right insulation for your home, not just the easiest one to install.
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 Hills Customers Say
"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Hector Hernandez"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."
— Elena Herrera"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Sofia Vargas