Insulation Company in Van Nuys, CA
Blown in insulation is the most common fix for Van Nuys homes built in the 1940s and 1950s, when attic insulation was skimpy or nonexistent. Those low-pitch vented attics bake in San Fernando Valley summers, and loose fill gets into every odd corner that batts can’t. Airtight Insulation Co has served Van Nuys since 2011, and we carry GreenFiber cellulose, Owens Corning fiberglass, and Johns Manville products so the material matches the house, not our inventory. Call (833) 390-7079 for an attic assessment.
Why Van Nuys Homes Are Different
Van Nuys sits in the hottest part of the San Fernando Valley, where summer temperatures regularly run 15 to 20 degrees above coastal LA. A 105°F afternoon turns a low-pitch attic into a 140°F heat box, and that radiant heat pours down through the ceiling into living space. The homes here are mostly post-WWII single-story stucco tract houses and bungalows with minimal original insulation, sometimes nothing more than a thin layer of rock wool or none at all. Decades of remodels and add-ons have left patchy coverage and unsealed attic bypasses in homes across the 91470, 91482, 91496, and 91499 ZIP codes.
The real culprit in many Van Nuys houses isn’t missing insulation so much as unsealed can-light penetrations and dropped soffits in those 1950s ranch ceilings. In a 105°F attic, a handful of unsealed recessed lights can dump more heat into the house than the entire attic’s R-value is stopping. We check those first because sealing them changes the physics of the whole attic. The dry climate and hot attic conditions also mean ventilation and radiant barrier performance matter as much as the R-value number on the bag. Insulation here has to handle punishing summer heat gain while still managing the cool winter nights the Valley gets from December through February.
Our Main Van Nuys Services
Most Van Nuys homeowners call us about two things: getting their attic insulated properly and sealing air leaks that make the house uncomfortable no matter what the thermostat says.
Attic Insulation in Van Nuys
Attic work in Van Nuys almost always starts with removing or topping old, compressed insulation, sealing bypasses around can lights and wiring chases, and then installing material matched to the attic’s pitch and access. Low-slope vented attics with tight access hatches call for blown-in products more often than batts, simply because loose fill reaches where rolls can’t. We carry Owens Corning, Johns Manville, and Knauf fiberglass plus Rockwool mineral wool, and we let the job pick the product. Read the full breakdown on our Attic Insulation in Van Nuys page.
Spray Foam Insulation in Van Nuys
Spray foam does two jobs at once in a Van Nuys attic: it insulates and it air seals. Open-cell foam works well for vented attics and interior sound control, while closed-cell foam adds structural rigidity and a vapor barrier, which matters in homes with flat roof sections or converted garage spaces. We install both Icynene and Demilec formulations, so the recommendation comes down to the attic’s ventilation design and the homeowner’s budget. See the full Spray Foam Insulation in Van Nuys page for local specifics.
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 Van Nuys
Blown in insulation is the workhorse solution for Van Nuys attics because loose fill conforms to the irregular framing, shallow joist bays, and odd corners that define 1940s and 1950s Valley tract homes. A 105°F attic with unsealed can lights and patchy old batts needs material that flows around obstructions and fills the cavity completely. We install GreenFiber cellulose and Johns Manville fiberglass loose fill, and the choice depends on attic depth, existing material, and whether the homeowner wants recycled content. This is the core of our Blown In Insulation work: seal it, not just fill it.
Cellulose Insulation
Signs you need it
Your attic has old, settled, or uneven insulation, and rooms directly under the attic feel 10 to 15 degrees hotter than the rest of the house on summer afternoons.
What it costs in Van Nuys
Blown-in cellulose in Van Nuys typically runs $1.50 to $2.80 per square foot installed, depending on attic depth and access.
How we do it
We air seal the attic floor penetrations first, then machine-blow GreenFiber cellulose to the target depth, checking density with a ruler as we go so the R-value is real, not claimed.
Blown In Attic Insulation
Signs you need it
Your attic has bare spots, old rock wool that’s settled to R-5 or worse, or you can see the ceiling joists in places because coverage is that thin.
What it costs in Van Nuys
Whole-attic blown-in insulation in Van Nuys lands between $1,800 and $3,500 for a typical 1,200 to 1,600 square foot single-story home.
How we do it
We remove or top the existing material, seal can lights and bypasses, install ventilation baffles at the eaves, and blow the new material to a consistent depth across the full attic floor.
Blown In Cellulose Insulation
Signs you need it
You want a higher recycled-content option with better air-sealing performance than fiberglass loose fill, or your attic has complex framing that batts can’t fit around.
What it costs in Van Nuys
Blown-in cellulose runs $1.50 to $2.80 per square foot installed in Van Nuys, which covers material, labor, and cleanup for most attics.
How we do it
We blow GreenFiber cellulose at the manufacturer’s specified density for the target R-value, paying attention to perimeter coverage at the eaves where heat gain is worst.
Blown In Fiberglass Insulation
Signs you need it
You prefer fiberglass loose fill for its lighter weight and because your attic has older wiring that you don’t want buried under heavier material.
What it costs in Van Nuys
Blown-in fiberglass in Van Nuys runs $1.20 to $2.20 per square foot installed, depending on target R-value and attic accessibility.
How we do it
We machine-blow Johns Manville loose-fill fiberglass to the manufacturer’s coverage chart, using depth markers throughout the attic so every section hits the target R-value.
What Blown In Insulation Costs in Van Nuys
| Item | Typical range in Van Nuys |
|---|---|
| Blown-in fiberglass (per sq ft) | $1.20 – $2.20 |
| Blown-in cellulose (per sq ft) | $1.50 – $2.80 |
| Whole-attic blown-in (1,200-1,600 sq ft) | $1,800 – $3,500 |
How long does blown in insulation take in a Van Nuys attic?
Most Van Nuys attics take 4 to 6 hours from setup to cleanup, including air sealing and baffle installation. Tight access hatches and low-pitch roofs can add an hour or two. Call (833) 390-7079 for a time estimate on your specific attic.
Is blown in insulation enough for a 105°F Van Nuys summer?
Blown in insulation does most of the heavy lifting, but unsealed can lights and bypasses will undo it. We air seal first, then blow to the full target depth. That combination is what actually shrinks a summer cooling bill in Van Nuys.
Brands We Service in Van Nuys
We install GreenFiber cellulose, Owens Corning and Johns Manville fiberglass, and Knauf products from local Van Nuys stock. Material arrives on the truck ready for the job, so there’s no second trip when an attic takes more product than expected. See our brands for the full manufacturer lineup.
Pricing for Insulation Company in Van Nuys, CA
| Service | Typical range in Van Nuys |
|---|---|
| Blown-in fiberglass (per sq ft) | $1.20 – $2.20 |
| Blown-in cellulose (per sq ft) | $1.50 – $2.80 |
| Whole-attic blown-in (1,200-1,600 sq ft) | $1,800 – $3,500 |
| Attic air sealing (can lights, bypasses) | $400 – $1,200 |
| Attic insulation removal | $1.00 – $2.00 per sq ft |
| Radiant barrier (per sq ft) | $0.80 – $1.50 |
| Spray foam, open-cell (per sq ft) | $1.80 – $3.00 |
| Spray foam, closed-cell (per sq ft) | $2.50 – $4.50 |
| Blown-in wall insulation (retrofit) | $2.50 – $4.00 |
Prices in Van Nuys push higher when an attic has knob-and-tube wiring that needs an electrician’s clearance before we cover it, or when decades of remodels left the attic floor chopped up and hard to reach. We give upfront pricing before the crew starts, so the number on the quote is the number on the invoice.
Neighborhoods We Serve in Van Nuys
We work throughout Van Nuys, from the older bungalow streets south of Victory Boulevard to the ranch houses north of Sherman Way and the pockets of apartments and converted garages near Van Nuys Boulevard. Our crews are in the area weekly, so scheduling is usually within a few days, not a few weeks.
- Valley Glen area
- Van Nuys Airport-adjacent neighborhoods
- North Van Nuys
- Central Van Nuys
- South Van Nuys
Service Area – Cities Near Van Nuys
Airtight Insulation Co works beyond Van Nuys too. We handle attic and blown-in jobs in Valley Glen, CA, Sherman Oaks, CA, Encino, CA, and North Hills, CA. If your home borders Van Nuys but sits in a neighboring ZIP code, the same crew and the same pricing structure apply.
Serving Van Nuys, CA — Our Local Coverage Area
We’re based in the Van Nuys 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 Van Nuys
Most Van Nuys attics are scheduled within 3 to 5 business days, and smaller blown-in jobs can sometimes go same-week. Tight low-pitch attics or homes needing knob-and-tube clearance may need a second visit first. Call (833) 390-7079 and we’ll give you a real date, not a window.
Most blown-in and batt attic insulation in Van Nuys does not require a city permit. If the job involves converting a space or adding living area above a garage, permit rules change. We’ll tell you upfront if your specific project crosses that line.
We cover 91470, 91482, 91496, and 91499, plus the surrounding Valley neighborhoods. If you’re right on the edge of Van Nuys in a neighboring ZIP, call (833) 390-7079 and we’ll confirm coverage for your street.
If your Van Nuys attic is roasting the house every summer, the fix starts with a real assessment of what’s up there now. Call Airtight Insulation Co at (833) 390-7079 for a free estimate. We’ll look at the attic, tell you what it needs, and give you a price before any work starts.
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 60-minute.
- 4You approve before work beginsNothing starts until you say go.
What Van Nuys Customers Say
"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."
— Claudia Morales"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."
— Simone Grant"Work is good and the house is noticeably more comfortable. There was insulation debris left in the hall closet under the attic access that I had to clean up."
— Rashad Coleman