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.
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AfterFast, Reliable Chimney Repair Across San Francisco
Chimney repair in San Francisco typically runs $350 to $2,800 depending on what’s failed. A cracked crown, pulled flashing, spalled brick, or a deteriorated liner are the usual suspects here, and each has a different price and urgency. Flint Chimney Sweep serves every San Francisco neighborhood with a written price before any work begins. If your chimney is leaking, shedding mortar, or the liner looks rough, call (830) 251-4560 and we’ll send a background-checked, uniformed technician to take a straight look.
Why Flint Chimney Sweep Is San Francisco’s Preferred Chimney Repair Company
We’ve been running chimney crews since 2002 as part of the Garrison Partners family. The operation runs on a written code we call The Garrison Standard: price in writing before tools leave the truck, scope agreed, and a 365-Day Done Right Promise on every repair. That’s not marketing language. It’s the guarantee Hank Delano, our owner, puts on every job.
San Francisco homeowners have told us the same story for years: another company no-showed, or the price changed after the tech got on the roof. We don’t operate that way. When a San Francisco customer books a repair, a live person answers the phone 24 hours a day, seven days a week. The tech arrives inside the window we gave. The invoice matches the approved number. If a covered repair fails within a year, we return free of charge. No argument, no second invoice.
Chimney Cap Replacement in San Francisco
Chimney Cap Replacement in San Francisco is one of the most common repairs we do, and it’s the first thing we check when a homeowner reports water in the firebox or rust on the damper. A cap sits on top of the flue and keeps rain, fog drip, and birds out. In San Francisco, the marine layer gives the cap a constant bath, and old galvanized caps rust through in years, not decades. A new stainless cap from Famco typically runs $350 to $650 installed at a standard one-story San Francisco roofline.
Signs Your Cap Has Failed
A rusted or missing cap lets water run straight down the flue. Homeowners in the Inner Sunset and Outer Richmond see this first as dampness in the firebox after heavy fog, not after rain. If the mesh sides are torn, you’ll also hear birds or see nesting material in the chimney. That’s a cap replacement, and it’s a one-hour job on most San Francisco homes.
What We Install
We fit Famco stainless caps sized to your flue, not an adjustable universal that rattles in the wind. The cap gets mechanically fastened, not caulked on, so the next 40-knot gust off Ocean Beach won’t send it into the neighbor’s yard.
Chimney Liner Installation in San Francisco
Chimney Liner Installation in San Francisco is a repair we often recommend after a camera inspection shows spalling or gaps in the original clay tile liner. The flue liner is the inner pipe that channels smoke and heat safely out of the house. In San Francisco’s fog-damp air, clay liners break down faster than they do inland because moisture sits in the masonry and works into the tiles. A new stainless liner in San Francisco runs $1,800 to $3,400 for a standard single-flue house, with the materials specified before the job starts.
When a Liner Can Wait
Not every cracked tile needs a new liner tomorrow. If the camera shows hairline cracks but no gaps and the chimney drafts fine, we’ll say so and put it on the annual watch list with a photo. When gaps open or the liner has shifted, flue gases can enter the house or the chase. That’s when the repair moves to the top of the list. We install DuraFlex stainless liners and we give you the make and model in writing before the work is ordered.
Installation Process
We drop the old liner, prep the flue, and pull the new stainless liner through from the top. The liner gets connected to the appliance with a proper connector, not left to vent into the smoke chamber. Every liner install includes a photo report showing the new flue from top and bottom, and the repair carries our 365-Day Done Right Promise.
Trusted Brands We Service in San Francisco
We work with Olympia Chimney and Gelco products regularly in San Francisco because they hold up in coastal damp. HeatShield is specified for smoke chamber parging on older San Francisco homes where the original chamber surface has turned to sand. We keep common cap sizes, flashings, and chase covers moving through our San Francisco Bay Area parts inventory, so a quick repair on a Richmond or Noe Valley home doesn’t wait a week on a distributor. When a parts lead time does run long on a specific liner or crown system, you’ll know before you approve the work, not after we’ve taken your deposit.
Common Chimney Repair Problems We See in San Francisco Homes
- Cracked crowns and spalling brick. Salt-heavy fog and the constant damp work into the crown and freeze-thaw does the rest during the rare cold snaps. A cracked crown lets water soak the flue liner and run down into the smoke chamber, and in the Sunset and Richmond districts we see this on homes that have not had a fire in years.
- Flashing pulled loose by seismic movement. San Francisco sits on moving ground. Minor tremors and roof settling break the seal between the flashing and the brick, and water follows the gap. The fix is often a flashing reset and reseal, not an expensive rebuild.
- Third-degree creosote glaze inside occasional-use flues. Many San Francisco homeowners say they barely burn. That doesn’t mean the flue is clean. Occasional, low-temperature fires build a hard glaze that a brush alone won’t remove, and owners who skip inspections because the chimney “hardly gets used” are the ones we find with the thickest deposits.
- Damper and firebox rust from coastal air. The same salt air that rusts a cap also eats dampers and iron firebox parts. A rusted damper that won’t operate is a common find on a Level 2 inspection in the Mission and Bernal Heights, especially where the chimney has no cap or a failed one.
Pricing for Chimney Repair in San Francisco, CA
Here are the ranges we quote in San Francisco so you have a ballpark before calling. Chimney cap replacement runs $350 to $650. Mortar repointing on a standard crown and shoulders runs $400 to $900. Flashing repair runs $375 to $800 depending on the roof pitch and how much metal needs replacing. Spalling brick repair that requires cutting out and replacing individual bricks runs $600 to $1,600. Chimney waterproofing, done correctly with a vapor-permeable sealant suitable for coastal brick, runs $600 to $1,200 for a standard single-flue chimney. A full chimney rebuild from the roofline up starts around $2,800 and climbs based on height and access. Call (830) 251-4560 for a free estimate, and the price we give you before the work starts is the price on the invoice.
We Also Serve Cities Near San Francisco
Our Chimney Repair crews cover the whole peninsula. If you’re in Daly City, Brisbane, Sausalito, or South San Francisco, the same written pricing and 365-Day Done Right Promise apply. For the full local picture, see Chimney Repair in San Francisco and the surrounding coverage area.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco 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 San Francisco
Yes. In San Francisco, unused chimneys fail from the outside in. The fog and salt air degrade the crown, bricks, and flashing even when the firebox stays cold. A Level 1 inspection on a never-used chimney costs less than $200 and usually costs less than the water damage repair it prevents. Call (830) 251-4560 to book one.
A Level 2 camera inspection shows the inside of the flue liner from top to bottom, including gaps, spalling, and hidden third-degree creosote that a visual check from the roof can’t see. On San Francisco homes, it also shows moisture entry points behind the damper and smoke chamber damage that form over years of fog exposure. You get a photo report of exactly what we saw, so the recommendation is based on evidence, not guesswork.
For most standard repairs, yes. Cap replacements, flashing resets, crown repairs, and waterproofing are priced by the job, not by the hour, and we give you the number in writing before any work starts. For jobs that need a closer look, the inspection is a fixed fee, and you get the written repair quote after we see the chimney. The approved price is always the invoice price. Call (830) 251-4560 for a free estimate.
Hairline cracks in a crown that have not opened into the flue can often wait a season if the fireplace is not used. A small amount of surface spalling can be watched with photos from one year to the next. What cannot wait is a gap in the flue liner, pulled flashing that leaks into the smoke chamber, or a failed cap over a regularly used chimney. A camera inspection tells you which list you’re on, and we’ll put that recommendation in writing with photos to back it up.
We don’t promise same-day repair. A proper chimney repair needs written pricing, the right parts, and a crew scheduled with a real window. What we do offer is a live person on the phone at (830) 251-4560, day or night, who can get your inspection booked and the repair quoted quickly. Seasonal urgency is handled by booking early before the burning season, not by rushing a botched job.
What a Proper Chimney Repair in San Francisco Actually Involves
The marine layer, salt-heavy air, and seismic movement in San Francisco mean chimneys here fail from moisture and shifting rather than from heavy wood-burning. Many chimneys in the city have not had a fire in years. They still need annual inspection because exterior mortar, flashings, and crowns degrade in the coastal damp, and hidden flue damage forms behind the walls. A proper repair starts with a Level 2 camera inspection and ends with a photo report showing what was replaced and why. We do not recommend a liner or a rebuild without camera evidence you can see for yourself, and we will tell you plainly when work can safely wait.
We were called to a 1920s two-flat in the Inner Sunset after a neighbor noticed mortar crumbs on the roof. Our tech ran a Level 2 inspection with a camera, found the chimney crown cracked and flashing pulled loose from seismic movement, and the flue liner had spalling from years of marine-layer moisture. We reset the flashing, installed a new stainless liner with a Gelco crown coat and a Famco cap, and gave the owner a photo report showing the before-and-after. The fireplace was safe to use again, but we told them the damper would need attention next year. No scare-selling, just the list.
Why the Coastal Damp Changes Everything in San Francisco
San Francisco’s fog is not a weather event. It’s a daily salt spray that settles on every chimney west of Twin Peaks, and the effect is predictable. Crowns crack. Brick faces shed. Flashings let go at the roofline. The freeze-thaw cycle that ruins chimneys in the Midwest is rare here, but the constant moisture does the same work more slowly and more evenly across the whole structure. That’s why a chimney in the Outer Sunset needs a waterproofing treatment specified for coastal brick, not the same sealant you’d use on a house in the Central Valley. And it’s why we ask San Francisco homeowners to look at their chimney as an exterior structure, not just a fireplace accessory. The firebox may never be used, but the flue, crown, and flashing are exposed to salt air every single day.
Contact Flint Chimney Sweep in San Francisco
If your chimney is leaking, shedding, or just has not been looked at in years, call (830) 251-4560. We’ll answer with a live person, schedule an inspection, and give you a written price before any repair work begins. Hank Delano and our San Francisco crews stand behind every job with the 365-Day Done Right Promise and a photo report so you can see exactly what was done. Estimates are free. The number on the invoice will match the number you approved.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving San Francisco since 2002.