Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Fast, Reliable Chimney Sweep Across Kensington
A chimney sweep in Kensington, CA typically runs $189 – $289 for a standard open-fireplace cleaning, and most jobs are completed in under two hours. Homes in Kensington’s mid-century housing stock often need more than a basic sweep, though. Our crews know the difference and will show you camera footage before recommending anything beyond the cleaning you called for. Call (336) 863-3889 for a written quote.
Kensington’s chimneys are not like what you’ll find in newer Bay Area suburbs. The homes here were built for a different era of heating, and a sweep that ignores that reality is doing half a job. We know this neighborhood’s chimneys, and we know what a camera inspection routinely finds inside them.
Why Alcott Chimney Sweep Is Kensington’s Preferred Chimney Sweep Company
Kensington homeowners keep calling us back because we do two things most chimney companies don’t: we send technicians you’ve already seen by name and photo before the doorbell rings, and we never recommend a repair without handing you the camera evidence that proves it’s necessary. That matters in a neighborhood where clay-tile flues from the 1960s are silently cracking behind brick facades.
Every technician who arrives at a Kensington home has passed a background check and identity verification under the Threshold Standard. Ruben Castellano built this company on a simple idea: you should know exactly who’s coming to your house before they get there. We text you the technician’s name and photo ahead of the appointment. They show a photo ID badge when they arrive. No exceptions, no surprises.
Our Chimney Sweep team serves Kensington’s ranch, Cape Cod, and split-level homes with the same certainty: a written price before any work begins, a written guarantee on every repair, and a free return visit if a repair fails within the coverage period. That’s the 365-Day Done Right Promise, and it’s included on every job.
Fireplace Cleaning in Kensington
Fireplace Cleaning in Kensington means removing the creosote and soot that accumulate in a flue that’s been venting the way fireplaces in this neighborhood vent. Many homes here burn hard during the November-to-March stretch, often with less-than-perfectly-seasoned wood, and that produces exactly the kind of first-degree creosote that can graduate to third-degree glazing if ignored. A standard cleaning runs $189 – $289 depending on flue height and buildup volume.
Creosote Removal in Mid-Century Flues
Creosote, the tar-like byproduct of incomplete wood combustion, coats flue walls in layers. First-degree is flaky and brushable. Third-degree is a hard, shiny glaze that resists standard sweeping and often signals that the flue has been running too cool for its design. In Kensington, where 1950s and 1960s chimneys were built around high-temperature oil exhaust, modern wood stoves routinely produce temperatures the original clay tiles were never meant to handle.
What a Sweep Actually Includes
We brush the full length of the flue, remove the accumulated soot and creosote from the smoke chamber and damper assembly, vacuum the firebox, and run a visual check of accessible surfaces. If we see anything that warrants a closer look, we’ll say so plainly and offer a Level 2 camera inspection before recommending any repair. You’ll see the footage yourself.
Chimney Services in Kensington
Chimney Services in Kensington covers more than the annual sweep. It means evaluating the entire venting system: flue liner, crown, flashing, damper, and the connection to whatever appliance is actually venting through it. Kensington homes often have dual-flue masonry chimneys, one flue for the fireplace and one for the heating system, and both need attention. A Level 1 inspection is included with every sweep; a Level 2 camera inspection runs $250 – $425 and is what we recommend for any home whose flue hasn’t been camera-checked in the last five years.
Level 2 Camera Inspections
A Level 2 inspection sends a camera through the flue to document liner condition from the firebox to the crown. This is the only way to see cracked clay tiles, hidden blockages, or the unlined stovepipe retrofits that were common in Kensington during the 1970s. If we find a breach, you’ll see it on the screen, not just hear about it.

Heating Flue Safety
The flue serving your furnace or boiler is a smoke-and-carbon-monoxide exhaust. Kensington’s older heating flues were designed for oil-fired systems that ran hotter than today’s high-efficiency units. The lower exhaust temperature now condenses inside the original clay liner, which accelerates cracking. We sweep and camera-inspect heating flues separately from fireplace flues, and we’ll tell you honestly whether the liner needs attention or can safely wait.

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.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Kensington
When a Kensington chimney does need a liner, we install professional-grade systems like DuraFlex stainless steel, not box-store substitutes. For deteriorated mortar joints and crown repair we use proven trade materials. HeatShield resurfacing, Gelco products, and Olympia Chimney components are what we stock for local jobs, which means faster turnaround when your repair requires specific parts rather than whatever’s on the shelf. We service and install Famco and Copperfield products on heating-flue work. You’ll see these brand names on your written quote before any work starts.
Common Chimney Sweep Problems We See in Kensington Homes
- Cracked clay-tile liners from condensation. Low-temperature modern boilers and wood stoves vent into flues built for hot oil exhaust. The resulting condensation soaks into original clay tiles, and freeze-thaw cycling across the Hartford County uplands widens every hairline fracture.
- Unlined 1970s wood-stove retrofits. During the energy crisis, Kensington homeowners ran stovepipe up open fireplace flues with no liner and no proper sizing. Many of those installs are still in use, and Connecticut’s liner enforcement flags them during inspections.
- Spalled mortar and failing crowns. Kensington’s inland position means sharper freeze-thaw cycles than coastal Connecticut. Exposed brick stacks shed mortar joints and crack crowns faster here, and a standard sweep that skips the crown inspection lets water in to do silent damage.
- Third-degree creosote glazing. Homes that burn wood every weekend in older fireplaces often develop a hard, shiny creosote layer that a basic brush cannot remove. It’s a fire hazard that requires chemical treatment or specialized removal, and it’s common in Kensington’s ranch and split-level stock.
Pricing for Chimney Sweep in Kensington, CA
A standard chimney sweep in Kensington runs $189 – $289, and that’s for a single open-fireplace flue with typical buildup. A Level 2 camera inspection adds $250 – $425 and is the only reliable way to document liner condition. If your home has a separate heating flue that also needs cleaning, add roughly $120 – $180. Relining runs higher, and we’ll quote it only after you’ve watched the camera footage with our technician. You’ll get a written price before any work begins, and estimates are free. Call (336) 863-3889 for an exact quote on your Kensington home.
We Also Serve Cities Near Kensington
Beyond Kensington, our crews serve homeowners throughout the Bay Area and the broader Connecticut service region, including nearby communities like Berlin, New Britain, and the wider Hartford County uplands. Alcott Chimney Sweep operates as part of the Threshold Group family, with scheduling coordinated from our San Francisco Bay Area office and local crews dispatched to Kensington.
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 Chimney Sweep in Kensington
Yes, if that flue has no stainless liner, it’s unlined and that’s a fire and carbon monoxide risk that also fails Connecticut’s liner enforcement requirements. In Kensington, this exact retrofit pattern is common in split-levels and ranches built between 1955 and 1975. The fix is installing a properly sized DuraFlex stainless liner, and we’ll show you the camera footage before recommending it. Call (336) 863-3889 to schedule an inspection and see what your flue actually looks like.
Yes, it does. Kensington’s original clay-tile flues were engineered for oil-fired exhaust that vented hotter than today’s high-efficiency boilers produce. The lower flue temperature allows condensation to form inside the tile, which soaks the clay and cracks under freeze-thaw cycling. We regularly see this on camera in mid-century homes here, and a Level 2 inspection is the only way to know if your liner has already failed. Estimates are free, and you’ll see the evidence before any repair is proposed.
Once a year, even if you only light a fire a handful of times. The reason is simple in Kensington: the heating flue serving your furnace or boiler runs all winter regardless of whether the fireplace gets used. A blocked or cracked heating flue is a carbon monoxide risk that has nothing to do with how often you burn wood. An annual sweep and Level 1 inspection covers both flues in one visit. Call (336) 863-3889 to book your annual check.
First-degree creosote is a flaky, brushable layer. Third-degree is a hard, shiny glaze that standard sweeping cannot remove and that burns ferociously once lit. Kensington’s older fireplaces, especially those burning less-than-perfectly-seasoned wood in oxygen-starved conditions, produce exactly the conditions that turn first-degree into third-degree. We see glazed smoke chambers regularly in 1950s and 1960s homes here. A camera inspection confirms the stage, and we’ll recommend the appropriate removal method based on what the footage shows.
Yes, and for most Kensington homes we recommend doing exactly that. Most mid-century properties here have dual-flue masonry chimneys, one for the fireplace and one for the furnace or boiler. Sweeping both in a single visit is more efficient than booking two appointments, and it lets us inspect the entire venting system in one pass. Pricing is per flue, and you’ll see a written quote before we start. Call (336) 863-3889 to schedule both flues together.
Written by Ruben Castellano, Owner at Alcott Chimney Sweep, serving Kensington since 2002.





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