Insulation Company in Van Nuys, CA
Blown in insulation is the most common upgrade we install in Van Nuys, and for good reason: most of the housing stock here was built between 1945 and 1970, when attic insulation was an afterthought. Decades of San Fernando Valley heat have settled and compressed whatever original material is up there, leaving many ranch homes with half the R-value they should have. Aliso Viejo Insulation Co specializes in attic, blown-in, and spray foam insulation, and we’ve served Van Nuys since 2014. If your summer cooling bills climb every July, call us at (877) 352-4780 and we’ll tell you exactly what’s in your attic and what it should be.
Why Van Nuys Homes Are Different
Van Nuys sits in the San Fernando Valley basin, where summer attic temperatures routinely exceed 140°F. That heat doesn’t just sit up there: it radiates down through the ceiling into the living space, forcing air conditioners to run longer just to hold 78°F. The housing stock compounds the problem. These are overwhelmingly single-family ranch and minimal-traditional tract homes built between 1945 and 1970, with 2×4 exterior walls and original fiberglass batts that have flattened over decades. Many attics still carry knob-and-tube or early Romex wiring, which means any blown-in job starts with a careful wiring inspection and clearance work before new material goes in.
The flat and low-slope roofs common on mid-century additions create another wrinkle. Where the roof pitch is shallow, insulation must be installed carefully to avoid creating moisture traps against the decking. In the older tracts around Van Nuys, we regularly find loose-fill cellulose or fiberglass that has settled to half its original depth, often with rodent nesting mixed in. The heat here makes attic radiant barriers and high-R blown-in insulation the highest-impact upgrades you can make, while the mild winters mean freeze protection is rarely a concern. Homeowners in the 91470, 91482, 91496, and 91499 ZIP codes deal with the same core issue: heat gain from above.
Our Main Van Nuys Services
Most Van Nuys homeowners call us about one of two things: getting their attic brought up to current code, or sealing air leaks with spray foam. Both are covered below.
Attic Insulation in Van Nuys
Attic work in Van Nuys almost always means retrofitting a postwar ranch, not insulating new construction. The job typically involves removing or topping up settled material, air-sealing ceiling penetrations, and blowing or batting to R-38 or higher. Because so many of these homes still have original wiring in the attic, we check clearances around every junction box and can before the new insulation goes in. We pull from Johns Manville, Knauf, and CertainTeed product lines depending on the home’s ventilation and framing. For the full scope of attic work in this city, see Attic Insulation in Van Nuys.
Spray Foam Insulation in Van Nuys
Spray foam earns its cost in Van Nuys when air sealing matters as much as R-value, which is most of the time in these old tract homes. Closed-cell foam also adds structural racking strength, something a 1960s 2×4 wall can genuinely benefit from. We install both open-cell and closed-cell systems through Icynene and Demilec, matched to the roof’s pitch and the homeowner’s moisture and budget requirements. Flat and low-slope additions need particular care here, and closed-cell often wins on those roof decks. Details are on Spray Foam Insulation in Van Nuys.
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 in Van Nuys is the workhorse retrofit for older Valley homes. In the tract housing built between 1945 and 1970, the original attic insulation has usually settled, compressed, or been displaced by rodents, leaving R-values well below today’s standards. We blow new material over or in place of the old, and the difference in summer cooling load is measurable within weeks. Most blown-in work here combines new insulation with air sealing, because a leaky attic floor wastes the new material’s performance. For a deeper dive on the method, visit Blown In Insulation.
Cellulose Insulation
Signs you need it
You can see the tops of your ceiling joists in the attic, or your July electric bill is $400 or more in a 1,400 square foot ranch.
What it costs in Van Nuys
Blown cellulose in Van Nuys typically runs $1.50 to $3.50 per square foot installed, depending on depth and prep.
How we do it
We air-seal the attic floor, verify wiring clearance, and blow GreenFiber recycled cellulose to the required depth with baffles protecting the eaves.
Blown In Fiberglass Insulation
Signs you need it
Your existing fiberglass batts are flattened, stained, or pulled away from the ceiling drywall, leaving bare patches visible from below.
What it costs in Van Nuys
Blown fiberglass in Van Nuys typically costs $1.20 to $3.00 per square foot, with prep work like rodent cleanup adding to the total.
How we do it
We remove compromised material where needed, seal penetrations, and blow Johns Manville or Knauf fiberglass to a consistent, measured depth.
What Blown In Insulation Costs in Van Nuys
| Item | Typical range in Van Nuys |
|---|---|
| Blown cellulose (attic, R-38) | $1.50 – $3.50 per sq ft |
| Blown fiberglass (attic, R-38) | $1.20 – $3.00 per sq ft |
| Loose fill over existing (top-up) | $0.90 – $2.00 per sq ft |
How long does blown in insulation last in Van Nuys heat?
Blown cellulose and fiberglass hold their R-value for decades if kept dry and undisturbed. The bigger issue in Van Nuys is settling over the first few years, which we account for by over-blowing to settle-to depth.
Can you blow insulation over old material in Van Nuys attics?
Yes, in most cases we can blow over existing material after air sealing and a wiring check. If the old insulation is rodent-soiled or moldy, we recommend removal first for air quality.
Brands We Service in Van Nuys
We install Johns Manville, Knauf, CertainTeed, and Rockwool products on Van Nuys jobs, among others. Because we source from eight manufacturers, the recommendation is driven by the house, not by what’s on the truck. See our brands for the full lineup.
Pricing for Insulation Company in Van Nuys, CA
| Service | Typical range in Van Nuys |
|---|---|
| Blown cellulose attic insulation | $1.50 – $3.50 per sq ft |
| Blown fiberglass attic insulation | $1.20 – $3.00 per sq ft |
| Loose fill top-up over existing | $0.90 – $2.00 per sq ft |
| Attic batt insulation (fiberglass) | $1.00 – $2.50 per sq ft |
| Mineral wool batt installation | $2.00 – $4.00 per sq ft |
| Open-cell spray foam | $0.50 – $1.50 per board foot |
| Closed-cell spray foam | $1.00 – $2.50 per board foot |
| Attic air sealing | $300 – $900 per attic |
| Insulation removal (standard attic) | $1.00 – $2.50 per sq ft |
| Radiant barrier installation | $0.80 – $1.80 per sq ft |
What pushes cost up in Van Nuys is access: flat and low-slope roofs leave little crawl space, and old knob-and-tube wiring often requires electrical clearance work before we can blow. What never changes is our pricing model: every quote is upfront, line-itemed, and fixed before the crew arrives, so you won’t see a change order for ordinary prep work.
Neighborhoods We Serve in Van Nuys
We work across Van Nuys and the surrounding Valley neighborhoods. Most attics here take a half day to complete after the prep is done, and our standard response window for estimates is one to two business days.
- Van Nuys Civic Center area
- Valley Glen
- North Hills border tracts
- Lake Balboa adjacent streets
- Central Van Nuys residential grid
Service Area – Cities Near Van Nuys
Our crews regularly run jobs in Valley Glen, CA, Sherman Oaks, CA, Encino, CA, and North Hills, CA. The same heat and housing stock patterns apply throughout the San Fernando Valley basin, so the solutions we use in Van Nuys carry over cleanly to the surrounding cities.
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
We typically schedule estimates within one to two business days, and installation within a week after the quote is approved. Heat surges in July and August fill the calendar fast, so spring and fall are the easiest times to book.
Most insulation retrofits in single-family homes don’t require a permit, but if we’re doing significant air sealing or touching wiring clearances, we flag anything that should go through the city. We’ll tell you straight on the estimate call what applies to your house.
We serve 91470, 91482, 91496, and 91499, along with the adjacent neighborhoods of Valley Glen, Sherman Oaks, Encino, and North Hills. If you’re on the edge of Van Nuys, call (877) 352-4780 and we’ll confirm coverage and response time for your street.
Get a free, no-pressure estimate for blown in, attic, or spray foam insulation in Van Nuys. Call Aliso Viejo Insulation Co at (877) 352-4780 and we’ll walk you through what’s in your attic today and what will actually lower your cooling bills.
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 Van Nuys Customers Say
"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Brooke Pruitt"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Marcy Anderson"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Sanjay Patel