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 Danville
Chimney repair in Danville, CA typically runs between $350 and $2,800 depending on what’s actually wrong, and most jobs are completed in a single visit. We work on the specific failure patterns Danville sees: cracked crowns from temperature swings, flashing leaks on older ranch homes, spalled brick where water got in and froze. Our crew coordinates out of the San Francisco Bay Area office and serves Danville neighborhoods directly, with a written price before anything comes off the truck. Call (830) 251-4560 for an exact quote on your chimney. Estimates are free.
Why Flint Chimney Sweep Is Danville’s Preferred Chimney Repair Company
We’ve been repairing chimneys in this part of the East Bay long enough to know what a Danville chimney goes through. The homes off Diablo Road and Green Valley Road were mostly built between the late 1950s and mid-1980s, and their chimneys share a pattern: masonry laid decades ago, exposed to temperature swings that put real stress on crowns and mortar joints. We show up, inspect carefully, and tell you what the fix will cost before you commit to anything.
Every job we do in Danville gets a written price delivered up front, with the scope of work on paper. That price doesn’t move when we’re on site. We’re part of Garrison Partners, founded in 2002, and we operate under The Garrison Standard: written commitments, documented scope, and a 365-Day Done Right Promise on every repair. If a covered repair fails within a full year, we return at no charge.
Our technicians are background-checked and uniformed, so you know exactly who’s walking through your door. A live person answers the phone 24 hours a day, seven days a week, not a voicemail tree. We serve every Danville neighborhood, from the original subdivisions near Sycamore Valley Road to the newer builds on the west side of town.
Chimney Repair Companies in Danville
Chimney repair companies in Danville handle the structural and functional fixes that a sweep alone can’t address: crown rebuilding, flashing replacement, flue relining, and masonry repair. You call one when a sweep reveals damage, when water is getting in, or when smoke is backing up into the house. Here’s what that work involves and what it costs in this market.
Crown and Flashing Repairs
A cracked chimney crown is the most common repair call we get in Danville. Wide day-night temperature swings on the valley’s west side expand and contract the concrete repeatedly, and over 30 or 40 years that cycle is brutal. A typical crown repair runs $450 – $900 in Danville. Flashing replacement around the roofline typically adds $350 – $700, but both prices depend on the condition of surrounding masonry.
Flue Relining
When a flue liner is cracked or deteriorated, smoke and carbon monoxide can leak into the wall cavity rather than exhausting out the top. In Danville homes with 30- to 50-year-old clay liners, the freeze-thaw cycle works on the clay the same way it works on the crown. Flue relining, replacing the inner liner that channels smoke safely out of the house, typically runs $1,800 – $4,500 depending on flue length and whether we use HeatShield or DuraFlex products. This is not a job to put off indefinitely. Carbon monoxide moves through old homes faster than most people expect.
Chimney Masonry Repair in Danville
Chimney masonry repair in Danville means fixing the brick and mortar itself, not just the internal components. When water gets into a chimney, the first sign is usually spalling brick, where the faces of bricks flake off and leave chips on the roof or ground. Left unaddressed, this weakens the whole stack and repair costs climb fast.
Mortar Repointing and Tuckpointing
Repointing is the process of grinding out deteriorated mortar joints and packing in fresh mortar. Tuckpointing is the same concept but uses two colors of mortar to match the original look. In Danville, where many homes have exposed brick chimneys visible from the street, keeping the mortar matched matters. Repointing typically runs $500 – $1,200 for a standard single-flue chimney. Spalling brick repair, where individual bricks need replacement, runs higher, often $900 – $2,000 when multiple courses are involved.
Chimney Waterproofing
Once masonry is repaired, waterproofing the exterior is what keeps it repaired. A breathable chimney waterproofing treatment applied to the brick and mortar after a repointing job prevents water from soaking in, cracking the mortar further, and restarting the cycle. We typically quote this as part of a masonry repair package. In Danville’s temperature-swing climate, skipping waterproofing after masonry work is like patching a roof and leaving the flashing loose.
Trusted Brands We Service in Danville
We stock parts for the brands Danville homeowners already have on their chimneys. If you have a HeatShield-resurfaced flue or a Gelco cap product installed by a prior contractor, we work with those. We regularly service and install Olympia Chimney caps and dampers, Famco components, and DuraFlex relining systems. The point is not to sell you a specific brand, it’s to make sure the repair matches what’s already on your house. If we’re replacing a cap or liner, we specify the material in the written quote before work starts, so you can look it up and verify what you’re paying for.
Common Chimney Repair Problems We See in Danville Homes
- Cracked crowns and mortar from temperature cycling. Danville’s diurnal temperature swings on the west side of the valley put crowns through daily expansion and contraction. After decades, that cycle is why we see spalled brick and crown fractures here more than in San Ramon or Dublin.
- First-degree creosote left in place because the fire ‘burned fine.’ Creosote has three degrees of severity. First-degree is flaky and brushable, but left in place it can turn into second- and third-degree glaze that a brush can’t remove. Catching it at first degree is cheap. Waiting costs real money.
- Missing or loose chimney caps. Wind, wildlife, and weather knock caps loose in Danville every year. A missing cap lets rain, birds, and raccoons into the flue, and homeowners often don’t realize it until they call for a sweep and find the flue full of nesting material.
- Rust streaks on the firebox ceiling or smoke smell on cold starts. These are classic water-intrusion symptoms in Danville’s older split-level homes. Water runs down from a failed crown or flashing, rusting the damper and soaking the smoke chamber. The chimney isn’t just dirty, it’s structurally compromised.
Pricing for Chimney Repair in Danville, CA
Here are honest ranges for Danville, based on what we see: mortar repointing runs $500 – $1,200, crown repair $450 – $900, flashing replacement $350 – $700, spalling brick repair $900 – $2,000, chimney waterproofing $400 – $800, and full flue relining $1,800 – $4,500. The biggest cost driver is whether water has already damaged the flue liner. The second biggest is how much masonry has spalled or separated. The estimate we give you is free, in writing, and the price on that estimate is the price you pay. No exceptions. Call (830) 251-4560 and we’ll come look.
We Also Serve Cities Near Danville
Our Chimney Repair team covers Danville and the surrounding communities. If you’re in San Ramon, Clayton, Alamo, or Dublin, we handle the same failures there, often different failure patterns, but the same process: written estimate, camera inspection, photo report. This page focuses on Danville because the damage profile here is distinct, but our crews dispatch to the entire area.
Serving Danville, CA - Our Local Coverage Area
We’re based in the Danville 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 Danville
Yes, and the reason is water damage, not creosote. Danville’s temperature swings crack crowns and flashing even on chimneys that see little use. A Level 2 inspection with a camera catches water intrusion and early masonry failure before they turn into four-figure repairs. If you burn at all, you also want to know whether what’s in your flue is first-degree, which is brushable, or something worse. Call (830) 251-4560 to book an inspection; the written report shows exactly what we found.
Signs that point to repair, not just a sweep: rust streaks on the firebox ceiling, water in the firebox after rain, cracked or flaking faces on exterior bricks, or smoke smell on cold starts. None of those come from creosote. If you see any of them in Danville, call us. We’ll run a camera up the flue and show you the photos, and the written quote tells you what’s repair and what’s just a sweep. Call (830) 251-4560 for a free estimate.
A camera inspection goes up past the damper into the smoke chamber and the full length of the flue, and it documents what’s actually there: cracked clay liners, gaps between tile joints, glazed creosote adhesion, missing mortar in the smoke chamber, or water staining from a failed crown. From the ground, none of that is visible. We were out on a 1968 split-level off El Cerro Boulevard where the homeowner saw a rust streak and smelled smoke on cold starts. Our tech ran a Level 2 inspection, put a camera up past the damper, and found a cracked chimney crown letting water down onto the flue liner, plus first-degree creosote glazing the upper flue. We rebuilt the crown, reset the flashing, and swept the flue back to clean clay. The draft came back and the smoke smell went away.
Some repairs can wait, and some shouldn’t. A cracked crown or failed flashing is letting water in every time it rains. Spring in Danville arrives after a rainy season that widens cracks, spalls brick, and rusts dampers. If you’re seeing water in the firebox, rust, or moss growth on the chimney, waiting through the winter increases the repair cost in the spring. If the only issue is light creosote and you won’t burn until next season, that can wait. The honest answer is: we’ll tell you which situation you’re in, and the written estimate tells you what can be postponed. Call (830) 251-4560 for that straight answer.
No, we don’t promise same-day repair, and we’d rather be direct about that. Repair work is scheduled, not dispatched like a sweep. What we do promise is a written price before any work starts and a 365-Day Done Right Promise on every repair. If a covered repair fails within a year, we return at no charge. That’s a guarantee in writing, not a same-day promise we can’t keep. Call (830) 251-4560 to schedule an estimate.
Contact Flint Chimney Sweep for Chimney Repair in Danville, CA
Call (830) 251-4560 and a live person answers, day or night. Tell us what you’re seeing: water in the firebox, a rust streak, spalled brick, smoke on startup. We’ll schedule an inspection, put a camera up the flue, and hand you a written estimate with the exact price, the exact scope, and the exact materials. This is how we’ve been operating since 2002. Every repair carries the 365-Day Done Right Promise. If it’s not done right, we make it right, in writing, for a full year.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving Danville, CA.