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 Repair Across Los Gatos
A standard chimney cap replacement in Los Gatos typically runs $385 to $650 including the cap, mounting hardware, and the labor to bring the flue up to current Santa Clara County WUI code with a spark arrestor. A chimney liner installation, which involves dropping a new stainless steel liner into the flue and insulating around it, generally falls between $2,900 and $5,400 depending on flue height and diameter. We work across Los Gatos from the downtown cottages off Main Street to the foothill properties along Los Gatos Boulevard and up toward the Lexington Hills, and every job gets a written price before any tools come off the truck. Call (830) 251-4560 to talk to a live person and get a flat quote before you book.
Why Flint Chimney Sweep Is Los Gatos’s Preferred Chimney Repair Company
We’re part of the Garrison Partners family founded in 2002, and we operate under the same Garrison Standard every location follows: written price before work starts, background-checked and uniformed technicians, and a 365-Day Done Right Promise on every repair we perform. That guarantee is simple. If a covered repair fails within a year of the service date, we return and make it right at no charge. No argument, no re-quote, no fine print.
Los Gatos homeowners call us because they’ve dealt with outfits that no-show or change the number at the door. We don’t do that. The price we write down before the visit is the price on the invoice. Our techs drive local roads daily, from Saratoga-Los Gatos Road up through Blossom Hill, and we know the housing stock here: 1920s bungalows near downtown, 1960s ranches in the flats, and custom hillside builds with chimneys that see serious weather exposure. That local familiarity means we arrive already knowing what your chimney likely needs before we even look at it. When you call (830) 251-4560, a live person answers. Not a voicemail tree. Not a callback form.
Chimney Cap Replacement in Los Gatos
Chimney Cap Replacement in Los Gatos is not always a one-for-one swap, and here’s the local reason: Los Gatos sits inside a Wildland-Urban Interface zone, and Santa Clara County fire code requires spark arrestors on chimney caps. That means a rusted or missing cap often gets upgraded to a WUI-compliant unit with a stainless steel screen that keeps embers from landing on your roof or a neighbor’s dry hillside. In the flats near the high school and along University Avenue, the code applies just the same as it does up in the fire-prone foothills.
What a Cap Swap Involves
We remove the old cap, inspect the flue opening for corrosion, and install a new cap from Olympia Chimney or Famco sized to your flue diameter. The cap gets mechanically fastened to the crown or flue liner, and we seal around the base to prevent water tracking down the masonry. On most Los Gatos homes this runs $385 to $650 and the work is done the same day we arrive.
Signs You Need a New Cap
Water stains on the fireplace ceiling, rust flakes in the firebox, or a cap that’s missing screen sections all mean it’s time. We’ve also seen caps blown clean off by winter winds on exposed hillside chimneys along Kennedy Road.
Chimney Liner Installation in Los Gatos
Chimney Liner Installation in Los Gatos often starts with a Level 2 camera inspection, because original 1950s and 1960s ranch and cottage chimneys here routinely have undersized or unlined flues that no longer meet current code for modern wood stoves or fireplace inserts. A visual Level 1 inspection from the firebox or the roof will not catch a cracked clay liner or a flue that’s missing a liner entirely. You need the camera for that, and we include the photo report with every inspection so you can see exactly what we see.
When a Liner Is Required
If the camera shows cracked clay tiles, gaps at the mortar joints, or third-degree creosote glaze that’s bonded to the flue wall, the correct fix is usually a new liner, not another sweep. We install DuraFlex stainless steel liners with the proper insulation wrap, and the job typically runs $2,900 to $5,400 in Los Gatos depending on the flue run.
HeatShield as an Alternative
For chimneys with minor liner damage, we sometimes use HeatShield, a ceramic coating applied inside the existing flue to seal micro-cracks and restore the smoke path. It’s less expensive than a full liner, but it isn’t right for every condition. The camera inspection determines which route we recommend, and we’ll tell you plainly when the HeatShield route is fine versus when you need the DuraFlex liner.
Trusted Brands We Service in Los Gatos
We install and work with professional-grade chimney products including DuraFlex liner systems, Olympia Chimney caps, Famco dampers, and Copperfield accessories. These are trade brands, not big-box generics, and we specify them by what your chimney needs, not by what pads our margin. For Los Gatos homeowners, that usually means we have common cap sizes and liner components ready with us on the truck, which cuts the back-and-forth that drags repair timelines out. If the part needs ordering, we’ll tell you that at the time of the quote so you know the schedule before you commit. We also service and repair chimneys with existing Copperfield dampers and Olympia Chimney caps, so if you’ve already got a brand-specific part on your flue, we can match it.
Common Chimney Repair Problems We See in Los Gatos Homes
- Spalling bricks and failing mortar on hillside chimneys. The combination of winter rain and summer heat cycles on exposed flues along the foothills breaks down mortar joints faster than homeowners expect. Repointing in Los Gatos generally runs $35 to $60 per square foot, and catching it early prevents a partial rebuild later.
- Ignored flues in lightly used fireplaces. Homeowners assume a few Duraflame logs a season means no maintenance is required. NFPA 211 says otherwise. Water intrusion, animal nesting, and creosote accumulation happen regardless of burn frequency, and we’ve pulled squirrel nests from flues in East Los Gatos that hadn’t been lit in three years.
- Third-degree creosote glaze from wet-burned oak. In foothill homes where firewood is stacked and burned before it’s properly seasoned, glaze forms on the liner. A standard wire brush will not remove it. The fix is chemical treatment plus a liner evaluation, and we see this often enough in the hills above Blossom Hill Road that we check for it as a matter of course.
- Water damage at the flashing. Original chimney flashing on 1960s ranches and 1970s split-levels is often galvanized steel that’s well past its useful life. Replacing flashing and sealing the penetration in Los Gatos typically runs $500 to $1,400, and it’s one of the highest-value repairs because it stops water before it rots the roof decking around the chimney.
Pricing for Chimney Repair in Los Gatos, CA
Chimney repair pricing in Los Gatos is a straight line-item estimate, not an open-ended hourly rate. A standard chimney cap replacement runs $385 to $650. DuraFlex liner installation runs $2,900 to $5,400. Mortar repointing runs $35 to $60 per square foot. Flashing repair runs $500 to $1,400. Chimney waterproofing, which we recommend for most hillside-exposed chimneys, runs $400 to $900 depending on the masonry surface area. The variables that move the number are flue height, liner diameter, roof access complexity, and the condition of the existing masonry. The one thing that never moves the number is what we think you’ll pay. You get a written price before we book, and the invoice matches it. Call (830) 251-4560 for a free estimate on your specific chimney.
We Also Serve Cities Near Los Gatos
Our crews work throughout the South Bay, and we regularly handle Chimney Repair calls in Saratoga, Campbell, Cupertino, and Santa Clara. If you’re just outside Los Gatos proper, don’t knock yourself out trying to find a local outfit that returns calls. We serve the whole Los Gatos area as part of our normal schedule, and the same written-price, photo-report process applies everywhere we go. You can reach us at (830) 251-4560 from any of those cities, and our live-person dispatch will route your call correctly.
Serving Los Gatos, CA - Our Local Coverage Area
We’re based in the Los Gatos 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 Repair in Los Gatos
Once a year, regardless of how often you actually burn. NFPA 211 calls for annual inspection of all chimneys, fireplaces, and vents, and Los Gatos’s mild climate doesn’t earn you a pass. Rain intrusion, animal nesting, and creosote buildup happen whether or not you light fires frequently. If you burn more than a cord of wood per season, plan on a sweep when the level of deposits reaches 1/8 inch or more. Call (830) 251-4560 and we’ll give you a straight answer for your specific fireplace and burn habits, along with a written price.
Yes, we can often remove third-degree creosote glaze using chemical treatments and mechanical equipment that breaks the glaze without wrecking the liner. But the real question is whether the liner underneath is still sound. We’ll know after a camera inspection, which we include with the photo report so you can see the condition yourself. If the liner is cracked or spalled, removing the glaze is a half-measure and you’ll be back in the same position next year. Call (830) 251-4560 for a straight answer and a written price either way.
Yes. Los Gatos sits in a Wildland-Urban Interface zone, and Santa Clara County fire code requires spark arrestors on chimney caps. The arrestor screen must be sized to prevent ember escape, and it applies to all chimneys, not just those in the immediate foothills. If your cap is cracked, missing screen sections, or gone entirely, you’re out of code. We bring replacement caps that meet the WUI requirement, and the typical cap replacement here runs $385 to $650. Call (830) 251-4560 and we’ll verify your current cap’s compliance during a standard inspection.
For a straightforward sweep on a chimney that’s been inspected recently and has no known problems, a visual check is sometimes enough. But for any Los Gatos home built before the 1980s, or any chimney that hasn’t been camera-inspected in the last few years, the camera is not optional. Original ranch and cottage flues here are frequently unlined or undersized, and you cannot see that from either the roof or the firebox. Our camera inspection is part of the flat price we quote before we arrive, and you get the photo report to keep. Call (830) 251-4560 to ask whether your chimney needs the camera based on its age and history.
Urgent means water entering the home through the chimney, visible smoke or odor backup inside the house, a liner with cracked or missing tiles, or a missing spark arrestor cap during fire season. Those conditions are safety issues, and a chimney fire or carbon monoxide intrusion is not worth the gamble. Non-urgent means minor mortar cracks that haven’t opened up yet, a worn cap that’s still screening effectively, or cosmetic spalling on the outside of the brick. We’ll tell you which category your chimney falls into and give you a written price either way. The point is you’re not guessing. Call (830) 251-4560 and we’ll put it in writing before you commit to anything.
Call Flint Chimney Sweep at (830) 251-4560 for a free estimate on any chimney repair in Los Gatos. A live person answers, and you’ll get a written price before we book the job.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving Los Gatos and the South Bay since 2002.





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