Insulation Company in Claremont, CA
Blown in insulation is the most common retrofit call we handle in Claremont, and for good reason. The city’s older bungalows and ranch homes were built when nobody thought much about wall cavities or attic R-value, so we spend a lot of time dense-packing cellulose and fiberglass into spaces that have been empty for sixty or seventy years. Claremont’s hot foothill summers and cool winter nights make those empty cavities expensive. Maple Insulation Co has served Claremont since 2017, and we match the material to the problem, not to what we happen to stock most. Call (855) 341-6045 for a free estimate.
Why Claremont Homes Are Different
Claremont is an old college town, and its housing stock reflects that. Walk the tree-lined streets around the Village and you’ll see 1920s and 1930s bungalows with lath-and-plaster walls, original wood siding, and attics that were designed for storage more than thermal performance. Many of these homes have true empty wall cavities behind the plaster. No insulation at all. Others have kraft-paper batt in the attic that has compressed, torn, or blown around over decades. South and east Claremont add 1950s and 1960s tract ranch homes to the mix, most of them under-insulated by today’s standards, with 2×4 walls and shallow attic framing.
The climate does not do these homes any favors. Claremont sits at the base of the San Gabriel foothills in the Pomona Valley, where summer afternoons regularly push past 100°F and west-facing attics bake by early afternoon. Winter nights drop cool enough that uninsulated homes lose heat fast. The dry climate means moisture-related insulation failures are less common here than in coastal areas, but that same dryness makes air leakage more noticeable. In Claremont, the biggest comfort and energy wins come from dense-pack wall insulation, attic air sealing, and high-R attic coverage. Those three things fix most of what ails a 1930s Claremont bungalow more than any window replacement ever will.
Our Main Claremont Services
Claremont homeowners call us most often about two things: re-insulating aging attics and upgrading to spray foam where air sealing matters most. Here is what each one looks like in Claremont specifically.
Attic Insulation in Claremont
Many Claremont attics still have their original 1950s batts, or none at all, which means the ceiling is the single biggest thermal hole in the house. We remove collapsed or rodent-damaged material, air-seal every penetration, and install new batts or blown-in coverage to the R-value that makes sense for a foothill climate. In Village-area bungalows with limited attic access, the work takes patience and care around old framing. We do not cut corners on plaster ceilings. See Attic Insulation in Claremont for full details on attic work here.
Spray Foam Insulation in Claremont
Spray foam earns its keep in Claremont when air sealing is the priority. Closed-cell foam works well in attics with ductwork, rim joists, and crawl spaces, while open-cell foam gives older homes a continuous air barrier despite irregular framing. The material choice depends on the cavity, the existing structure, and what the homeowner is trying to solve. We carry both Icynene and Demilec spray foam lines, so the recommendation comes from the job, not the inventory. Read Spray Foam Insulation in Claremont for a complete breakdown.
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 the workhorse retrofit for Claremont’s older homes because it is the only practical way to insulate wall cavities without opening up plaster. Dense-pack cellulose, blown into empty stud bays through small access holes, fills the void completely and stays put behind lath. In attics, blown fiberglass or cellulose covers irregular framing quickly and reaches spots that batts cannot. For Claremont’s mix of pre-war bungalows and mid-century ranch homes, Blown In Insulation is usually the most cost-effective route to a more comfortable, less drafty house.
Cellulose Insulation
Signs you need it
Rooms that stay cold in winter and hot in summer, especially in older Claremont homes with uninsulated wall cavities, point to a need for dense-pack cellulose.
What it costs in Claremont
Blown-in cellulose generally ranges from $12 to $19 per square foot in Claremont, with dense-pack wall work on the higher end of that band.
How we do it
We drill small access holes through exterior siding or interior plaster, dense-pack the cellulose into each stud bay under pressure, then patch and texture the holes so they disappear.
Blown In Attic Insulation
Signs you need it
An attic floor with thin, patchy, or collapsed insulation, especially in Claremont ranch homes with shallow attic framing, means your ceiling is leaking conditioned air all year.
What it costs in Claremont
Attic air sealing and blown-in attic insulation runs from $2,800 to $4,700 for a typical Claremont single-story home, depending on square footage and old-material removal.
How we do it
We remove the old material if needed, air-seal every top-plate and penetration, then blow fresh insulation across the attic floor to a consistent depth.
What Blown In Insulation Costs in Claremont
| Item | Typical range in Claremont |
|---|---|
| Blown-in cellulose (per square foot) | $12 – $19 |
| Blown-in fiberglass (per square foot) | $9 – $16 |
| Attic air sealing + blown-in attic insulation | $2,800 – $4,700 |
Will blown in insulation settle over time?
Dense-pack cellulose settles less than 2 percent under proper installation pressure. In Claremont’s dry climate, settling is rarely a concern. Loose-fill attic insulation can shift slightly over decades, but we install to a depth that accounts for it.
Can blown in insulation go into existing walls without removing plaster?
Yes. Dense-pack cellulose is designed for retrofit wall cavities. We access stud bays through small exterior or interior holes, blow the material in under pressure, and patch afterward. Call (855) 341-6045 to discuss your specific home.
Brands We Service in Claremont
Claremont jobs draw from our eight-brand lineup. We stock CertainTeed and GreenFiber for blown-in work, Icynene and Demilec for spray foam, and keep common batt sizes in the trailer for faster attic jobs. Parts for most Claremont calls ship same week. See our brands for the full roster.
Pricing for Insulation Company in Claremont, CA
| Service | Typical range in Claremont |
|---|---|
| Attic air sealing | $1,200 – $2,400 |
| Attic air sealing + blown-in attic insulation | $2,800 – $4,700 |
| Blown In Insulation (attic, 1,000 sq ft) | $1,500 – $2,800 |
| Spray foam insulation (per board foot) | $1.25 – $4.85 |
| Remove old insulation | $800 – $3,500 |
| Soundproofing walls | $2,100 – $4,400 |
| Attic radiant barrier | $1,600 – $3,900 |
| Insulation removal | $900 – $3,300 |
| Blown-in cellulose (per sq ft) | $12 – $19 |
| Blown-in fiberglass (per sq ft) | $9 – $16 |
In Claremont, the biggest price movers are attic access and old-material removal. A bungalow with a tight scuttle hole and decades of compressed batts costs more to prep than a clean ranch attic. Every quote we give is upfront, fixed, and free. Call (855) 341-6045 and we will give you a number before we leave the driveway.
Neighborhoods We Serve in Claremont
We work throughout Claremont 91711, from the Village-adjacent streets with their aging bungalows to the newer construction on the north side near the foothills. Our crews know which blocks have empty wall cavities and which attics hide knob-and-tube-era wiring. Here are a few of the neighborhoods we regularly service:
- The Village (historic bungalows and Craftsman homes)
- North Claremont (foothill-adjacent, newer builds with better modern shell sealing)
- Claraboya and the south side (1950s-70s tract ranch homes)
- East Claremont near the Montclair border (mid-century homes with shallow attics)
- The Indian Hill corridor (mixed-era homes, many with uninsulated wall cavities)
Response time for most Claremont neighborhoods is one to three days for an estimate, with same-week install scheduling during the cooler months.
Service Area – Cities Near Claremont
Maple Insulation Co runs crews throughout the Pomona Valley and surrounding foothill cities. In addition to Claremont, we regularly handle insulation work in Montclair, CA, Upland, CA, Pomona, CA, and Ontario, CA. If you are in one of these neighboring cities and need an estimate, call us and we will route the nearest crew.
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
Most Claremont estimates happen within one to three days of your call. Installation scheduling depends on the project scope and material availability, but blown-in attic jobs often start within the same week. Call (855) 341-6045 to check current scheduling.
For most retrofit insulation work, no permit is required in Claremont. New construction and major remodels fall under different rules, but adding insulation to an existing attic or wall cavity is typically classified as routine maintenance. We can confirm for your specific project when we quote.
Yes. Dense-pack cellulose is specifically designed for homes with lath-and-plaster walls. We access stud bays through small holes and patch them cleanly, so original plaster stays intact. We handle Village-area bungalows regularly and respect the original detailing throughout the work.
If you are done guessing why your Claremont home runs hot in August and cold in February, call Maple Insulation Co at (855) 341-6045. We will inspect your attic and walls, tell you what is actually wrong, and quote a fix that fits the house, not our inventory. Free estimates, upfront pricing, and no pressure.
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 the hour.
- 4You approve before work beginsNothing starts until you say go.
What Claremont Customers Say
"Spray foam in the rim joists in the basement. The cold floors above them are gone."
— Kelly Meyer"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."
— Ruben Guzman"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Kevin Chen