Insulation Company in Kensington, CA
Insulation work in Kensington, CA runs $2,800 – $7,500 for most whole-home projects, with attic jobs starting lower and full spray-foam retrofits at the top of that range. The pre-WWII housing stock here, built with narrow wall cavities and no modern vapor management, demands moisture-smart materials and careful installation that standard suburban crews often miss. We’re Aspen Attic Insulation, and we dispatch Kensington crews from our San Francisco Bay Area office with products matched to this fog-heavy microclimate. Call (864) 428-1615 for a free written estimate.
Why Kensington Homes Are Different
Kensington’s housing stock is overwhelmingly 1920s – 1940s wood-frame construction, Spanish Colonial and Craftsman bungalows with lath-and-plaster walls and attics that were never insulated to begin with. The wall cavities are narrow by modern standards, and original construction included no vapor barriers or moisture management of any kind.
The cool, damp marine layer rolling off San Francisco Bay keeps humidity high year-round, with foggy mornings even in July. We’ve opened walls in Kensington where condensation had rotted exterior sheathing for years, hidden behind intact plaster. That moisture degrades standard fiberglass batts and creates mold conditions that homeowners don’t discover until we’re already inside. Our crews prioritize vapor-permeable materials and proper air sealing, because in Kensington, insulation that traps moisture causes more harm than no insulation at all.
Our Main Kensington Services
Most Kensington homeowners call us for one of three jobs: bringing an uninsulated attic up to modern standards, sealing and insulating with spray foam for whole-home efficiency, or adding blown-in insulation to walls and cavities that were never filled.
Attic Insulation in Kensington
Kensington attics are typically uninsulated original spaces with knob-and-tube wiring still present and limited headroom. We assess what’s there, air-seal around chimneys and top plates, then install batt or loose-fill insulation rated for the R-value this climate demands. Every attic job includes written photos of the completed work and falls under our 365-Day Done Right Promise. Attic Insulation in Kensington
Spray Foam Insulation in Kensington
Spray foam makes sense in Kensington when we’re sealing the building envelope of a home with continuous air leaks through lath-and-plaster walls. Our crews apply open-cell or closed-cell foam depending on the cavity depth and moisture conditions, using Icynene or Demilec products selected for this fog-influenced environment. We send the technician’s name and photo before arrival, so you know exactly who accesses your home. Spray Foam Insulation in Kensington
Blown In Insulation in Kensington
Blown-in insulation, loose fibers blown into attic floors and wall cavities, fills the irregular gaps common in Kensington’s older framing. We use Owens Corning or GreenFiber cellulose, matched to the space and treated for fire resistance. This method works well for homes where removing interior plaster isn’t practical but the walls still need thermal protection. Blown In Insulation in Kensington
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 Kensington
We stock materials from eight industry-leading brands including Owens Corning, Johns Manville, and Knauf, sourced to match Kensington’s moisture-sensitive conditions rather than forcing a one-size-fits-all product. Most materials are on hand for next-day starts. our brands
Pricing for Insulation Company in Kensington, CA
| Service | Typical range in Kensington |
|---|---|
| Attic insulation (batts, 1,000 sq ft) | $2,800 – $4,200 |
| Attic insulation (blown-in, 1,000 sq ft) | $3,200 – $4,800 |
| Spray foam insulation (open-cell, whole attic) | $4,500 – $6,800 |
| Spray foam insulation (closed-cell, whole attic) | $5,500 – $8,200 |
| Wall insulation (blown-in, per 1,000 sq ft) | $3,800 – $5,500 |
| Air sealing (whole-home prep) | $1,200 – $2,400 |
| Insulation removal (contaminated/damaged) | $1,800 – $3,200 |
| Vapor barrier installation | $900 – $1,800 |
Prices in Kensington run toward the higher end of these ranges when homes still have active knob-and-tube wiring, plaster removal is required, or we discover hidden moisture damage in sheathing that must be addressed before new insulation goes in. Every homeowner receives a written, itemized price before any work begins, with no post-job additions.
Neighborhoods We Serve in Kensington
Our crews cover all of Kensington’s residential areas, from the hillside streets near Arlington Avenue down to the flat neighborhoods along Colusa Circle. Most appointments are scheduled within 48 hours, with same-day service available for urgent situations like failed insulation after water intrusion.
- Arlington Heights
- Colusa Circle area
- Kensington Hill
- The Plaza neighborhood
- Visa Del Mar
Service Area – Cities Near Kensington
We dispatch crews throughout the East Bay and broader Bay Area from our San Francisco Bay Area office. Homeowners in San Francisco, CA, San Jose, CA, Los Angeles, CA, and San Diego, CA can request service through our main scheduling line, with routing based on crew availability and project scope.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington 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 Kensington
Most attic insulation projects in Kensington don’t require permits, but wall insulation and spray foam applications typically do, especially in homes with original lath-and-plaster construction. We handle permit research and submission as part of our project planning. Call (864) 428-1615 and we’ll verify requirements for your specific job before scheduling.
We answer live 24/7 and typically schedule Kensington estimates within one to two business days. Emergency situations, like insulation compromised by roof leaks or pest damage, get same-day priority when possible. You’ll receive the technician’s name and photo by text before anyone arrives at your door.
Yes. Our 365-Day Done Right Promise covers every Kensington job in writing, including labor and materials, with a free second visit if any repair fails within that year. The guarantee is unconditional, regardless of home age or the surprises we sometimes find behind century-old plaster.
Ready to stop losing heat through walls that were built before insulation existed? Call Aspen Attic Insulation at (864) 428-1615 for a free written estimate. We’ll send a background-checked, photo-badged technician to your Kensington home, with their name and picture delivered to your phone before they knock.
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 same-day.
- 4You approve before work beginsNothing starts until you say go.
What Kensington Customers Say
"Spray foam in the rim joists of the crawl space. Clean install, and the floors are noticeably warmer."
- Chuck W."Before and after photos were sent to my phone. I could see the difference."
- Hilary G."Honest assessment. Told me the walls were fine and the attic was the problem. Saved me money."
- Ed M.