Insulation Company in Campbell, CA
We’re Thistledown Attic Insulation, and our crews work throughout Campbell, CA on homes built mostly between 1950 and 1975. Most of the ranch-style houses here still carry original insulation, which means attic temperatures above 130°F in summer leak straight into living spaces. Our job is to fix that with written pricing before we start, clean floors throughout, and insulation matched to the house and the family inside it. Call (909) 768-6501 and a live person answers, day or night.
Why Campbell Homes Are Different
Campbell sits on the Santa Clara Valley floor behind the Santa Cruz Mountains, which block the afternoon marine layer that cools coastal cities like Los Gatos or Saratoga. Summer highs in the low-to-mid 90s°F bake the shallow-pitched roofs common on postwar ranch houses, and attic spaces absorb that radiant heat for hours after sunset. The result is an insulation job with a different priority than coastal work: the goal in Campbell is cutting PG&E summer cooling loads, not freeze protection.
The housing stock adds another wrinkle. Most of Campbell’s residential core is single-story ranch tract homes built between roughly 1950 and 1975, almost all predating California’s Title 24 energy code that took effect in 1978. We routinely open attic hatches here and find R-11 batts or less, often compressed under decades of foot traffic, rodent activity, and old wiring projects. The older bungalows near the historic Campbell Avenue corridor are even thinner – balloon-frame walls and attics that hold heat like an oven. None of this is unusual for us, and none of it changes how carefully we work: drop cloths from the front door to the attic hatch, shoe covers on every pair of boots, and a photo of the clean-up before we leave.
Our Main Campbell Services
Campbell homeowners reach out to us for two things most often: attic insulation and spray foam. Each service has its own Campbell page with local pricing, product details, and process notes.
Attic Insulation in Campbell
The attic work in Campbell typically means removing old, underperforming batts and installing fresh material matched to the roof pitch and the family’s needs. Because so many homes here are 1950s – 1970s ranches with low-pitched roofs and minimal original insulation, most jobs include air-sealing the attic floor before new insulation goes down. We install products from Owens Corning, Johns Manville, Knauf, and GreenFiber, and we’ll tell you what we’re putting in and why before we touch a rafter. Attic Insulation in Campbell
Spray Foam Insulation in Campbell
Spray foam suits the older bungalows and the trickier roof lines around Campbell, where fiberglass batts leave gaps around recessed lights, plumbing vents, and the irregular framing common in pre-1950 construction. In a climate where attic heat is the main enemy, closed-cell foam creates an air seal that stops the hottest air from ever entering the living space. We’ll explain the differences between open-cell and closed-cell, what works around the baby’s room, and what the written price includes before any equipment comes out of the van. Spray Foam Insulation in Campbell
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.
Brands We Service in Campbell
We install across eight brands, and on Campbell jobs we often reach for Owens Corning, Johns Manville, Knauf, or GreenFiber depending on the house, the budget, and the family’s sensitivity to materials. Pet-safe options are available where a choice exists. Learn more about our brands.
Pricing for Insulation Company in Campbell, CA
| Service | Typical range in Campbell |
|---|---|
| Attic insulation – basic fiberglass batt installation (small attic) | $900 – $1,400 |
| Attic insulation – blown-in fiberglass (1,200 sq ft attic) | $1,200 – $1,800 |
| Attic insulation – blown-in cellulose (1,200 sq ft attic) | $1,300 – $2,000 |
| Attic insulation – removal of old insulation and reinstall | $1,800 – $3,200 |
| Attic air sealing + new insulation (typical ranch home) | $1,500 – $2,600 |
| Crawl space insulation – replacement of sagging batts | $800 – $1,700 |
| Spray foam insulation – open-cell, small attic | $2,200 – $3,500 |
| Spray foam insulation – closed-cell, roofline application | $3,500 – $6,500 |
What pushes a Campbell quote higher is usually access: a tiny attic hatch in a 1963 ranch with a low-pitched roof takes longer to work in than a wide-open newer attic, and the older bungalows near Campbell Avenue may need additional prep before insulation can be installed. Whatever the number, you receive it in writing before any work begins, every time.
Neighborhoods We Serve in Campbell
Our crews cover the whole of Campbell, CA. Most jobs complete in a single day, and our scheduling team coordinates from the San Francisco Bay Area office to get a crew to your neighborhood quickly.
- Downtown Campbell
- The Dry Creek area
- San Tomas
- West Campbell
- Campbell-Los Gatos border neighborhoods
Service Area – Cities Near Campbell
We also serve homeowners in the surrounding South Bay communities, where the housing stock and summer heat patterns are similar to Campbell’s. You’ll find us working in Saratoga, CA, Los Gatos, CA, Santa Clara, CA, and Cupertino, CA.
Serving Campbell, CA - Our Local Coverage Area
We’re based in the Campbell 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 Campbell
Same-day and next-day availability is common in Campbell. Call (909) 768-6501 and a live person answers 24/7 to schedule a time that works around nap schedules, school pickup, and workdays. We confirm the window in writing before the crew arrives.
Most attic and spray foam insulation work in Campbell does not require a permit when it’s a retrofit of an existing structure. Structural changes or full renovations are different. We’ll tell you if your job triggers anything before we schedule, and the written estimate covers the work as described.
Yes. We lay drop cloths from the front door to the attic hatch and wear shoe covers the entire time we’re inside. We choose pet-safe insulation products where a choice exists, and we leave a photo of the clean-up before we pull away from the curb.
Call (909) 768-6501 for a free estimate on insulation work in Campbell. We answer live, every hour, every day.
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 Campbell Customers Say
"Careful and clean from start to finish. They covered the hallway, wore booties, and hauled off all the old material without leaving a speck. Respectful of the home the whole time."
- Brett Yamamoto"Attic insulation. The crew laid down protection from the front door to the attic hatch and vacuumed up every bit of the old material. House holds its warmth now and there was zero mess."
- Rowena Platt"Attic insulation with a baby in the house. The crew was quiet, clean, and protected every floor they crossed. Took away all the debris and left it tidy. Already feeling the difference in comfort."
- Omar Leon