Insulation Company in Pasadena, CA
Blown in insulation in Pasadena delivers the fastest, least disruptive fix for older homes losing conditioned air through attics and wall cavities. We’re Hollywood Insulation Co, and we’ve served Pasadena since 2018, insulating everything from 1920s Craftsman bungalows in Bungalow Heaven to 1970s ranch homes near Eaton Canyon. Most Pasadena jobs involve loose fill cellulose or fiberglass blown into attics that were never insulated properly, or dense-packed into wall cavities that have been empty since the day they were framed. Call (866) 605-6949 for a free estimate, and we’ll tell you exactly what your house needs and what it will cost.
Why Pasadena Homes Are Different
Pasadena’s housing stock runs old and architecturally significant. The core of the city is dominated by early-1900s through 1930s Craftsman bungalows and Spanish Colonial Revival homes, many with lath-and-plaster walls, balloon framing, and original knob-and-tube wiring. In Bungalow Heaven and the Civic Center Historic District, we regularly work in homes where wall cavities have never held insulation, and attics have nothing but a few inches of settled dust between the ceiling and the roof deck.
The climate compounds the problem. Pasadena sits in the San Gabriel Valley at the foot of the Arroyo Seco, where summer temperatures routinely push past 100°F and attic temperatures climb far higher. That superheated air radiates down through ceilings all afternoon, while winter nights drop enough to make uninsulated rooms feel cold by morning. Santa Ana events and wildfire season add another layer: smoke and dry wind find every gap in an old Pasadena house, and airtightness matters as much as R-value. A home with original balloon framing can act like a chimney, pulling hot attic air into living spaces through wall chases. Fixing that requires knowing what’s behind the plaster before blowing anything in.
Our Main Pasadena Services
Two services account for most of the calls we take from Pasadena homeowners: attic insulation and spray foam. Here’s what each involves in this city’s housing stock.
Attic Insulation in Pasadena
Most Pasadena attics from the 1920s and 1930s have open cavities, steep gable roofs, and original framing that was never designed for insulation. We air-seal the attic floor first, then blow or batt the space to R-value appropriate for San Gabriel Valley heat. Older homes often need careful work around knob-and-tube wiring and original venting. Attic Insulation in Pasadena covers the full scope of this service.
Spray Foam Insulation in Pasadena
Spray foam makes sense in Pasadena when the goal is air sealing plus insulation in one pass, or when roof deck insulation is more practical than attic floor work. It’s especially useful on stucco-clad postwar ranches with limited attic access. We install both open-cell and closed-cell systems using Icynene and Demilec products. Spray Foam Insulation in Pasadena details the approach for this city’s homes.
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 Pasadena
Blown in insulation is the workhorse solution for Pasadena’s older housing stock because it’s the only practical way to insulate existing walls and attics without opening up lath-and-plaster or drywall. Homes in Bungalow Heaven and northwest Pasadena often have uninsulated exterior wall cavities and balloon-frame chases that let hot valley air pour in all summer. Loose fill cellulose or fiberglass, blown through small access holes, fills those cavities completely, around obstacles and in irregular framing. For attics, blowing in insulation over existing layers is usually a half-day job with immediate comfort results. This is routine work for our crews, and we’ve handled hundreds of Pasadena attics and wall retrofits since 2018. Learn more about the method on our Blown In Insulation page.
Cellulose Insulation
Signs you need it
Old ceilings feel warm at noon in summer, rooms are drafty in winter, and your energy bills climb every season despite a working HVAC system.
What it costs in Pasadena
Blown in cellulose in Pasadena typically runs $1.50 to $3.50 per square foot installed, depending on depth, access, and whether walls or just attics are involved.
How we do it
We air-seal all penetrations, blow GreenFiber cellulose to the specified depth with a high-output machine, and verify coverage with a depth gauge before we leave.
Blown In Attic Insulation
Signs you need it
Your attic floor has thin, settled, or missing insulation, and upstairs rooms are noticeably hotter than downstairs from mid-afternoon on.
What it costs in Pasadena
Blown in attic insulation in Pasadena typically costs $2.00 to $6.00 per square foot, with square footage measured at the attic floor.
How we do it
We seal air leaks, install or confirm vent baffles, then blow loose fill insulation evenly across the attic floor to the R-value your home needs.
Blown In Fiberglass Insulation
Signs you need it
You prefer a non-cellulose option, or your attic has settled batts that leave gaping thermal voids across large sections of ceiling.
What it costs in Pasadena
Blown in fiberglass in Pasadena runs $1.00 to $3.00 per square foot installed, a bit less than cellulose in most attic applications.
How we do it
We remove severely compromised material when needed, air-seal the attic floor, then blow fiberglass to an even depth using manufacturer-specified equipment.
What Blown In Insulation Costs in Pasadena
| Item | Typical range in Pasadena |
|---|---|
| Attic air sealing plus blown in insulation | $2.00 – $6.00 per sq ft |
| Blown in cellulose (walls or attic) | $1.50 – $3.50 per sq ft |
| Blown in fiberglass (attic) | $1.00 – $3.00 per sq ft |
How long does blown in insulation take in Pasadena?
Most Pasadena attic jobs take 4 to 6 hours, and wall dense-packing adds a second visit for patching the small access holes.
Can you blow insulation into walls that have knob-and-tube wiring?
No. We never blow insulation over live knob-and-tube wiring in Pasadena homes. We’ll flag it during the walkthrough and recommend the safe path forward before any work starts.
Brands We Service in Pasadena
We carry CertainTeed fiberglass, Icynene and Demilec spray foam systems, and GreenFiber recycled cellulose. Most materials are stocked locally for Pasadena jobs, so we typically start within a week of your estimate. See our brands for the full lineup.
Pricing for Insulation Company in Pasadena, CA
| Service | Typical range in Pasadena |
|---|---|
| Blown in fiberglass insulation | $1.00 – $3.00 per sq ft |
| Blown in cellulose insulation | $1.50 – $3.50 per sq ft |
| Blown in attic insulation | $2.00 – $6.00 per sq ft |
| Spray foam insulation (open-cell) | $2.00 – $6.00 per sq ft |
| Spray foam insulation (closed-cell) | $3.00 – $8.00 per sq ft |
| Attic insulation overall | $1.50 – $8.00 per sq ft |
Older Pasadena homes push prices toward the upper end when attic access is tight, knob-and-tube wiring needs to be worked around, or lath-and-plaster wall cavities require careful drilling and patching. Whatever the job, our quote is the price you pay. No surprise add-ons, no change-order games.
Neighborhoods We Serve in Pasadena
We work everywhere in Pasadena, from the historic blocks of Bungalow Heaven to the hillside streets of Hastings Ranch and the postwar tracts along the 210 corridor. Typical response time is next-day availability for estimates across the city.
- Bungalow Heaven
- Madison Heights
- Hastings Ranch
- Northwest Pasadena
- Oak Knoll
Service Area – Cities Near Pasadena
Our crews also cover the surrounding San Gabriel Valley communities. We serve South Pasadena, CA, San Marino, CA, Altadena, CA, and East Pasadena, CA, handling the same range of blown in, attic, and spray foam work for each area’s housing stock.
Serving Pasadena, CA — Our Local Coverage Area
We’re based in the Pasadena 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 Pasadena
Most attic and wall insulation retrofits don’t require a permit from the City of Pasadena, but historic district homes may need design review before any exterior work. We’ll flag that during the estimate if it applies to your property.
In most cases we can be out for a free estimate within 1 to 2 business days, and we schedule installation within a week for most Pasadena projects. Emergency attic jobs can often be slotted sooner.
Yes. We cover 91110, 91114, 91115, and 91116, plus the full 91101 through 91107 range, and our technicians know the housing stock in each neighborhood.
If your Pasadena home is fighting the San Gabriel Valley heat every summer and still feeling cold on winter nights, we’ll find the leaks and the missing insulation, then fix both. Call Hollywood Insulation Co at (866) 605-6949 for a free estimate. We know what these houses need, and we’ll give you a straight answer.
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 Pasadena 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