Insulation Company in Claremont, CA
Blown in insulation solves the most common problem we see in Claremont homes built before 1980: attics with fiberglass batts that have compressed to R-9 or worse, or no insulation at all above the ceiling. When July pushes past 100°F, those attics hit 140°F and the heat radiates straight into bedrooms. We match the material to the job, not the job to whatever we have on the truck, and for most Claremont ranch homes and Village bungalows that means blown in cellulose or fiberglass at full depth. Call (855) 773-6429 and we’ll assess what’s actually in your attic now, then tell you what it should be.
Why Claremont Homes Are Different
Claremont’s housing stock runs older than most of the Inland Empire, and that changes how we approach every insulation job. The original 1940s and 1950s construction around the Claremont Colleges and through the Village often went up with no attic insulation at all, or a thin layer of vermiculite or rock wool that settled decades ago. Single-pane windows and wood-frame walls let air move through the building envelope in ways newer homes with Tyvek and tight framing simply don’t. What that means in practical terms: a Claremont homeowner paying $450 a month to cool a 1,400-square-foot ranch home in August is often spending $120 of that cooling the attic. The good news is the fix is the same for all of them. Bring the attic to R-38 or higher with blown in material, seal the top plates and penetrations, and the house stops fighting itself. Homes near the colleges have the added wrinkle of original construction details worth preserving, so we work carefully around existing eaves, gable vents, and the occasional knob-and-tube wiring remnant that makes blown in insulation the safer, code-friendlier choice over spray foam.
Our Main Claremont Services
Two services account for most of the calls we take from Claremont homeowners: attic insulation and spray foam. The first addresses the city’s chronic under-insulated attics. The second solves specific problems like air sealing, room-over-garage floors, and wall cavities where fiberglass simply won’t perform.
Attic Insulation in Claremont
Most Claremont attics we enter have R-19 fiberglass batts at best, installed when the house was built and never touched since. Heat gain through an under-insulated attic is the single largest driver of summer cooling bills here, and it’s also why upstairs rooms in so many Village bungalows run 8 to 12 degrees warmer than the living room. We remove or top up what’s there, seal the air leaks, and blow fresh material to R-38 or R-49 depending on the home. Get the full breakdown on Attic Insulation in Claremont.
Spray Foam Insulation in Claremont
Spray foam is the right call in Claremont when you’re dealing with a bonus room over the garage, a flat roof, or a crawlspace that pulls in outside air. Open-cell Icynene works well in attic rooflines where you want air sealing plus some sound dampening. Closed-cell Demilec is the choice for areas exposed to moisture or where R-value per inch matters, like tight wall cavities. We choose the foam chemistry based on the application, not on what’s already loaded in the rig. See Spray Foam Insulation in Claremont for typical projects and pricing.
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 Claremont
Blown in insulation is our most common recommendation for Claremont attics, and it’s what most of the older homes near the Village and the Claremont Colleges actually need. Whether we’re using Blown In Insulation over existing compressed batts or starting from bare drywall, the result is the same: full-depth coverage with no gaps, no voids, and thermal performance that old-school batt installation can’t match. In a city where attics routinely bake above 130°F from June through September, consistent blown in depth is the difference between a house that cools off at night and one that never quite does.
Cellulose Insulation
Signs you need it
You notice dust and gray flecks near ceiling fixtures, your energy bills climb each summer, and rooms directly under the attic never hold temperature.
What it costs in Claremont
Cellulose blown into a typical Claremont attic runs $1,800 to $3,200 depending on square footage and target R-value.
How we do it
We dense-pack the material into wall and ceiling cavities, ensuring it settles evenly for consistent thermal coverage year-round.
Blown In Attic Insulation
Signs you need it
Your attic has exposed ceiling joists, the existing insulation sits below the joists, or upstairs rooms are the hottest in the house through summer.
What it costs in Claremont
Blown in attic insulation to R-38 in a single-story Claremont ranch home generally falls between $1,100 and $2,600.
How we do it
We seal the top plates and any gaps, then machine-blow material to a consistent depth across the entire attic floor, including the hard-to-reach edges.
Blown In Cellulose Insulation
Signs you need it
You want recycled, fire-retardant material in a home with older wiring, where cellulose’s natural fire resistance offers an extra margin of safety.
What it costs in Claremont
Blown in cellulose typically runs $1,800 to $3,200 for a full attic in a Claremont mid-century home.
How we do it
We load fresh GreenFiber cellulose into the machine, blow it to the depth that reaches your target R-value, and check density with test cores before we call it done.
Blown In Fiberglass Insulation
Signs you need it
You have an attic with low clearance, tight eaves, or ducts running through the space where loose-fill fiberglass flows better than batts.
What it costs in Claremont
Blown in fiberglass for a typical Claremont attic runs $1,100 to $2,400 depending on depth and square footage.
How we do it
We run fiberglass through the blower at controlled pressure, layering it evenly to prevent gaps and settling issues common with fast installations.
Loose Fill Insulation
Signs you need it
Your attic insulation has settled below the top of the joists, leaving the ceiling plane exposed and the house fighting outside temperatures.
What it costs in Claremont
Removing old settled material and re-blowing loose fill to R-49 in Claremont costs $1,800 to $3,000 on average.
How we do it
We extract degraded material, air seal the attic floor, then blow fresh loose fill to an even depth that meets current energy code.
What Blown In Insulation Costs in Claremont
| Item | Typical range in Claremont |
|---|---|
| Blown in attic insulation to R-38 | $1,100 – $2,600 |
| Blown in cellulose full attic | $1,800 – $3,200 |
| Old insulation removal + loose fill to R-49 | $1,800 – $3,000 |
Is blown in insulation better than batts for Claremont attics?
For most Claremont homes, yes. Blown in material fills the irregular spaces, overlaps the joists, and eliminates the gaps that make batts perform like R-9 even when the label says R-19. Call (855) 773-6429 and we’ll tell you which approach makes sense for your attic.
How long does blown in insulation last in a Claremont home?
Properly installed blown in fiberglass or cellulose holds its R-value for 20 to 30 years or more. The bigger issue in Claremont is that old material settles and compresses over decades, so what’s there now is likely underperforming. A free attic check at (855) 773-6429 gives you a clear answer.
Brands We Service in Claremont
We stock and install materials from CertainTeed, Icynene, Demilec, and GreenFiber, along with four other major brands, and we keep the common products for Claremont attics and walls on hand in Placentia. That means most jobs don’t wait on a supplier order. You can see the full lineup at our brands.
Pricing for Insulation Company in Claremont, CA
| Service | Typical range in Claremont |
|---|---|
| Attic air sealing | $500 – $1,200 |
| Attic insulation removal | $800 – $2,200 |
| Blown in attic insulation to R-38 | $1,100 – $2,600 |
| Blown in fiberglass attic | $1,100 – $2,400 |
| Cellulose insulation full attic | $1,800 – $3,200 |
| Closed-cell spray foam (2-inch) | $1,800 – $4,000 |
| Open-cell spray foam attic ceiling | $2,000 – $4,600 |
| Rim joist spray foam | $1,500 – $3,000 |
| Blown in wall insulation | $2,200 – $4,800 |
| Old insulation removal + loose fill to R-49 | $1,800 – $3,000 |
| Crawl space insulation | $1,100 – $3,400 |
| Whole-home insulation package | $5,000 – $15,000 |
Attics with tight clearance, old knob-and-tube wiring, or extensive air sealing needs push costs toward the upper end in Claremont. Whatever the job, your quote is the number you pay. We don’t add surprise fees after the work starts, and estimates are free.
Neighborhoods We Serve in Claremont
We insulate attics and walls across all of Claremont’s 91711 zip code, from the Craftsman bungalows in the Village to the mid-century ranches around Memorial Park and the college-adjacent streets north of Foothill Boulevard. Every crew we send is staffed for the specific house type, not a generic job ticket.
- The Claremont Village
- Claremont Colleges area
- Memorial Park neighborhood
- North Claremont
- Foothill Boulevard corridor
We schedule most Claremont estimates within 48 hours, and attic jobs in a single-story home often take one day to complete.
Service Area – Cities Near Claremont
Placentia Insulation serves Claremont and the surrounding foothill communities regularly. Our crews are in Montclair, CA and La Verne, CA most weeks, and we cover Upland, CA and the hillside homes in San Antonio Heights, CA as well. If you’re in one of these cities, the same crew, pricing, and material options apply.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont 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 Claremont
We schedule most Claremont estimates within 48 hours, and urgent attic or wall jobs during summer heat waves are prioritized. Call (855) 773-6429 and we’ll book the first open slot that works for your schedule, usually same week.
Most attic and wall insulation retrofits in Claremont do not require a city permit, especially for blown in or batt material installed in existing homes. Spray foam on new construction or additions may trigger Title 24 paperwork. We’ll tell you exactly what’s needed for your project before work starts.
We serve all of the 91711 zip code plus Montclair, La Verne, Upland, and San Antonio Heights. Our crews run a regular route through the foothill communities, so scheduling is predictable and you’re not waiting on an out-of-area contractor. Call (855) 773-6429 to confirm your address.
Ready to get your Claremont home properly insulated? Call (855) 773-6429 for a free estimate. We’ll measure what’s in your attic now, tell you what it should be, and give you a fixed price before any work begins.
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 Claremont Customers Say
"Handled the utility rebate paperwork, which knocked a real amount off the final cost."
— Gilbert Ramirez"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."
— Veronica Guzman"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."
— Rachel Sullivan