Insulation Company in Redlands, CA
Blown in insulation in Redlands is the workhorse retrofit for the city’s older housing stock, specifically the pre-1940 Craftsman and Spanish bungalows around downtown where original walls hold nothing but air. We’re Comfort Zone Insulation Co, and we install insulation and nothing else. That focus matters in Redlands because retrofitting a 1920s balloon-frame home without wrecking historic plaster takes a different approach than insulating a 1990s tract house in south Redlands. Call us at (855) 341-7856 when rooms won’t hold temperature.
Why Redlands Homes Are Different
Redlands sits at the eastern edge of the Inland Empire, backed up against the San Bernardino Mountains and the Crafton Hills. Summers here routinely push past 100°F and attic temperatures climb far higher than what crews working coastal LA neighborhoods ever measure. Winter nights near freezing, so insulation in Redlands has to handle both directions of heat flow. That’s a true dual-demand climate and it changes how we spec materials.
The bigger factor is the housing stock. Downtown Redlands and the older blocks in 92373 hold a dense supply of pre-1940 Craftsman, Victorian, and Spanish Revival homes built with plaster-and-lath walls, knob-and-tube wiring, and balloon framing. Those wall cavities are open channels from the crawlspace to the attic. Original redwood sills and uninsulated walls let hot air chimney straight up through the stud bays. A crew that only blows attic insulation without sealing those wall-top plates leaves the biggest heat path in the house wide open. We see this constantly in the citrus-belt bungalows near Sylvan Park and along Cajon Street.
South and east Redlands plus much of 92374 add a different challenge: 1950s through 1970s tract ranches with low attics, unvented roof assemblies, and chopped-up additions. Those homes were built when energy was cheap and insulation was an afterthought. Today they overheat by late afternoon and leak heat all night in January. The right fix depends on the house, not on whatever product happens to be on the truck.
Our Main Redlands Services
We install insulation and nothing else, so Redlands homeowners can call us for a focused diagnosis instead of a general contractor’s best guess. The two services we field the most calls about here are attic systems and spray foam cavity work.
Attic Insulation in Redlands
In Redlands, the attic is where the fight starts. Our Attic Insulation in Redlands service covers air sealing the attic floor, checking and repairing bypasses around light fixtures and chimneys, and bringing the insulation level up to what a 100°F summer actually demands. Low attics in the 1950s through 1970s ranches across 92374 need a careful hand to reach the eaves without crushing the existing insulation. We inspect the attic before quoting because too many older Redlands homes have standing water issues or knob-and-tube wiring hidden under old batts.

Spray Foam Insulation in Redlands
Spray foam is the right tool for many Redlands roofs and walls. Our Spray Foam Insulation in Redlands service includes closed-cell and open-cell systems from Demilec and Icynene, applied to unvented attics, band joists, and cathedral ceilings. In a balloon-framed Craftsman, spray foam can seal the wall cavity at the top plate where hot air stacks up and rises through the house. That’s detail work we do regularly here and it’s the difference between a quiet, comfortable house and one that fights the thermostat all afternoon.

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 Redlands
Blown in insulation in Redlands solves the most common comfort problem we find: old homes with some attic insulation but little to nothing in the walls. Redlands summers hit 100°F and older homes in 92373 bake from above while their empty wall cavities let heat soak through the plaster. Our Blown In Insulation team specializes in filling those existing cavities and bringing attics up to current thermal performance, often in a single day, without tearing out original trim or disturbing the outside stucco or siding.
Cellulose Insulation
Signs you need it
Rooms that overheat by 3 p.m. even with the AC running and thick dust visible around attic hatch edges usually mean the existing attic insulation has settled or never covered properly.
What it costs in Redlands
Blown in cellulose for a typical Redlands attic runs $1,200 to $2,600 depending on attic depth and whether we air seal first.
How we do it
We air seal the attic floor, mark the target depth, and blow in GreenFiber cellulose at the correct coverage using our trucks and calibrated dense-pack machines for wall cavities when the job calls for it.
Blown In Attic Insulation
Signs you need it
If you can see the tops of the ceiling joists through what’s already up there, your Redlands attic likely has R-19 or less and is losing cool air all summer.
What it costs in Redlands
Blown in attic insulation in Redlands typically falls between $1,500 and $2,800 for a standard single-story home, including removal of any old, damp material.
How we do it
We remove or retract the old material, air seal everything that pokes through the ceiling, and blow the attic to the correct R-value for Redlands’ dual heating and cooling climate.
Loose Fill Insulation
Signs you need it
Uneven attic coverage, wind-worn bare spots near the eaves, or a house that simply can’t hold a set temperature in either July or January are all red flags.
What it costs in Redlands
Loose fill insulation in Redlands costs $1,100 to $2,400 for most attics, less for small top-up jobs, more when walls are included.
How we do it
We map the attic by section and depth before we start, then blow the material to a consistent, verified depth rather than guessing by eye.
What Blown In Insulation Costs in Redlands
| Item | Typical range in Redlands |
|---|---|
| Cellulose attic top-up | $1,200 – $2,600 |
| Blown in attic insulation (full job) | $1,500 – $2,800 |
| Loose fill attic top-up / small attic | $1,100 – $2,400 |
Local attic condition, access, and whether air sealing is included all change the final number. We quote the full job before we start so there’s no surprise line item at the end.
Can you blow insulation into walls without removing the plaster?
Yes, in most Redlands homes we can dense-pack cellulose through small exterior access holes, from outside when siding allows, and patch them cleanly. This is the standard method for pre-1940 plaster-and-lath homes in 92373. Call (855) 341-7856 to check whether your wall framing will accept it.
How long does blown in insulation last in a Redlands attic?
Cellulose and fiberglass in a dry, sealed Redlands attic remain effective for decades. What fails here is the air sealing around bypasses, so we address that first before adding new material. Call (855) 341-7856 and we’ll inspect yours.
Brands We Service in Redlands
Our Redlands jobs run on materials from eight brands, including Owens Corning, Rockwool, and Johns Manville, with Knauf as another option. We don’t push a single manufacturer. We match the material to your Redlands home’s framing and climate room by room. See our brands for the full list.
Pricing for Insulation Company in Redlands, CA
| Service | Typical range in Redlands |
|---|---|
| Blown in attic insulation | $1,500 – $2,800 |
| Loose fill insulation | $1,100 – $2,400 |
| Cellulose insulation | $1,200 – $2,600 |
| Spray foam insulation | $2,200 – $5,500 |
| Attic insulation | $1,500 – $3,500 |
| Air sealing and attic insulation | $2,000 – $4,200 |
Two things push Redlands quotes higher than the county average: older attics with limited access or knob-and-tube wiring that needs an electrician’s sign-off before we cover anything, and the need to seal wall-top plates in balloon-framed houses near downtown. We quote the job in writing before we begin, with no pricing games.
Neighborhoods We Serve in Redlands
We work all over Redlands, from the historic bungalows near downtown to the tract ranches and newer developments on the south and east sides. Response time is usually same-week, and we run twice-weekly routes through the whole city, not just the easy-access streets.
- Historic downtown and the bungalow district near Sylvan Park
- Crafton and the neighborhoods below Crafton Hills
- South Redlands along the 10 corridor
- Redlands Heights and the hillside streets above the University of Redlands
- Sunset Drive and the east side near Crafton Hills College
Service Area – Cities Near Redlands
Comfort Zone Insulation Co also serves the communities around Redlands, including Mentone, CA, just east toward the mountains, Loma Linda, CA to the south, Highland, CA to the north, and Colton, CA to the west. Same team, same insulation-only focus.
Serving Redlands, CA — Our Local Coverage Area
We’re based in the Redlands 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 Redlands
Most insulation upgrades don’t need a permit in Redlands, but some older homes in 92373 with knob-and-tube wiring or unpermitted additions can trigger a review. We tell you before we start whether your specific house needs anything from the city.
Yes, we run crews through Redlands every week and usually schedule within a few days in 92373, 92374, and 92375. Call (855) 341-7856 and tell us what rooms are misbehaving. We’ll get you on the route that works.
Every week. Much of our Redlands work is in pre-1940 homes where preserving plaster and trim matters. We choose dense-pack and small-access methods specifically to avoid the damage a careless retrofit causes. Call (855) 341-7856 and we’ll walk you through the approach for your house.
If your Redlands home won’t hold a temperature, the fix starts with a real diagnosis. Call Comfort Zone Insulation Co at (855) 341-7856 for a free estimate and we’ll tell you exactly what’s going on and what it takes 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 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Redlands Customers Say
"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Doug Barrett"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Vivian Kim"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."
— Dustin Sullivan