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 Fairfax
Chimney repair in Fairfax typically runs $395 to $2,800 depending on whether you’re dealing with a cracked crown, spalled brick, or a full rebuild. Most repairs in Fairfax are handled in a single visit, and every job gets a written price before any work starts. Fairfax’s hillside lots and older wood-shingle homes make chimney access trickier than what you’d find on flat suburban blocks, so we schedule accordingly and bring the right ladder setups. If you need an honest assessment, call (830) 251-4560. We’ll walk the roof, run a camera down the flue, and show you photos of what we find before recommending a dollar of work.
Why Flint Chimney Sweep Is Fairfax’s Preferred Chimney Repair Company
We’re part of the Garrison Partners family, founded in 2002, which means we operate under The Garrison Standard: a written scope, a written price, and a written guarantee on every repair. Fairfax homeowners tell us the same thing over and over. They’ve had chimney companies no-show, change the number at the door, or recommend work with nothing to back it up. We don’t run that way. Hank Delano, who leads Flint Chimney Sweep, built the operation around one rule: if it’s not documented, it didn’t happen.
Our background-checked, uniformed technicians know Fairfax well. We work on hillside chimneys along Bolinas Road, older bungalows near downtown, and newer construction above Deer Park. That familiarity matters. Steep roof pitches change ladder angles. Wood-shingle siding changes how we stage equipment. When you call, a live person answers. Not a voicemail tree. Not a callback form. We dispatch from our San Francisco Bay Area office and route crews to Fairfax with the right gear for the terrain.
Every repair carries our 365-Day Done Right Promise. If a covered repair fails within one full year, we return at no charge. That’s not a verbal promise. It’s written on the invoice.
Chimney Crown Repair in Fairfax
Chimney Crown Repair is the most common structural repair we perform in Fairfax, and it starts with a cracked or crumbling concrete crown at the top of the chimney. Fairfax’s freeze-thaw cycles take a real toll. Water seeps into hairline cracks, expands when temperatures dip, and progressively breaks the crown apart. Once that happens, water gets behind the brick and into the flue, which leads to spalling brick and damaged liners. A crown repair in Fairfax typically runs $650 to $1,400 depending on the crown’s size and whether we need to form and pour a new one or can patch the existing surface. We use Gelco and Olympia Chimney crown coat products because they hold up to our wet winters.
Signs your Fairfax chimney crown is failing
You’ll see pieces of concrete or mortar on the roof or in the gutter. Stains on interior walls near the fireplace are another tell. During rainy weeks, you might notice a damp smell or visible water in the firebox. If you can safely see the top of the chimney from the ground and the crown looks cracked or eroded, call us. We’ll get on the roof, photograph the damage, and give you a straight answer.
What a crown repair actually involves
We remove loose material, build a proper form when the old crown is beyond saving, and pour a new one with a slight slope so water sheds off the crown instead of pooling. We then seal it. The repair usually takes a few hours plus cure time. You get a written price before any of that starts, and the work is covered for a full year.
Chimney Repair Companies in Fairfax
Chimney Repair Companies in Fairfax vary widely in how they quote, what they inspect, and whether they stand behind the work. Some will give a phone estimate without ever looking at the chimney. Others will insist on a full rebuild before running a camera down the flue. Flint Chimney Sweep approaches it differently. We inspect first, document everything with photos, and hand you a written scope with a fixed price. You approve it or you don’t. No pressure, no vague “we’ll see once we’re up there” pricing. A typical Chimney Repair job in Fairfax runs $395 for minor flashing or cap work to $2,800 for a partial rebuild.
What separates a repair you need from one you don’t
That’s where the camera inspection matters. A cracked flue liner is a real hazard if you use the fireplace. A small hairline crack in the exterior brick might be purely cosmetic and can safely wait. We’ll tell you which is which, and you’ll see the evidence yourself. That’s the whole point of the photo report.
Repair versus rebuild: the honest conversation
Sometimes repair is throwing good money after bad. If the masonry is spalling throughout and the original mortar has failed, a partial rebuild might cost less over five years than repeated patch jobs. But we won’t recommend that without showing you exactly why. HeatShield and Famco liner products are part of our repair toolkit when the inner flue needs addressing, and we specify the product by what the job actually requires, not by margin.
Trusted Brands We Service in Fairfax
We work with professional-grade chimney materials because Fairfax chimneys take a beating from rain, temperature swings, and regular wood burning. On repair jobs across Fairfax, we commonly install HeatShield liner systems, Gelco waterproofing products, and Olympia Chimney crown repair materials. We stock common parts locally for Fairfax dispatch, which means less waiting on mail-order components when you need a flue liner or a proper chimney cap. DuraFlex, Famco, and Copperfield round out the materials we specify when the job calls for them. You can research any of these brands independently and see they’re the products actual chimney professionals use, not big-box substitutes.
Common Chimney Repair Problems We See in Fairfax Homes
- Cracked crowns from freeze-thaw cycles. Fairfax’s microclimate swings between wet winter rains and cold snaps, and water that enters small crown cracks expands when it freezes. The result is progressive cracking that lets water into the brick and flue.
- Spalling brick on older chimneys. Many Fairfax homes were built in the 1920s through 1960s, and the original bricks are now reaching the end of their service life. Once the face of a brick pops off, water penetrates faster, and the damage accelerates.
- Damaged or improperly sized flue liners. Fairfax sees its share of power outages during winter storms, which means more wood burning. An undersized or cracked liner drafts poorly, creosote builds up faster, and a chimney fire becomes more likely.
- Missing or damaged chimney caps. Rain gets straight down the flue, and animals move in. During dry spells, nesting material becomes a blockage and a fire hazard. During wet months, the water accelerates liner and masonry damage.
Pricing for Chimney Repair in Fairfax, CA
Here are the honest ranges for Fairfax. Minor flashing repair runs $395 to $700. A chimney cap replacement runs $275 to $550. Crown repair runs $650 to $1,400. Spalling brick repair and tuckpointing run $850 to $2,200 depending on how much masonry we’re addressing. A flue liner installation with HeatShield runs $1,900 to $2,800. Partial chimney rebuilding runs $2,200 to $4,500. What moves the number: roof pitch and access difficulty, the amount of damage, whether the firebox also needs work, and whether we’re replacing a liner. Every estimate is free, and the price we give you in writing before the job is the price on the invoice. Call (830) 251-4560 to schedule an inspection.
We Also Serve Cities Near Fairfax
Flint Chimney Sweep handles chimney repair and inspections across central Marin. We serve Fairfax along with San Anselmo, Kentfield, San Rafael, and Larkspur. If you’re just outside Fairfax and need a chimney looked at, call (830) 251-4560 and we’ll route the nearest crew to you.
Serving Fairfax, CA - Our Local Coverage Area
We’re based in the Fairfax 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 Fairfax
Once a year if you burn wood regularly, and at least once every two years if the fireplace is mostly decorative. Fairfax’s wet winters and temperature swings create conditions where small problems become structural problems within a single season. A thorough Chimney Inspection - Fairfax includes a camera run down the flue, which catches cracks and creosote buildup you cannot see from below. If it’s been more than two years, schedule one. Call (830) 251-4560 and we’ll get you on the calendar.
You should expect a written inspection report with photos, followed by a written price if repairs are needed. Our tech arrives in a marked vehicle, in uniform, and walks the roof to assess the crown, flashing, masonry, and cap. Then we run a camera through the flue. You see the images. We explain what’s urgent, what can wait, and what it costs. You decide. No work starts without your written approval.
Yes, though scheduling depends on the roof being dry enough to work safely. Crown repairs need a dry surface for the new material to bond properly. If a crown has failed and water is actively entering the flue, we can often get a temporary cap or seal in place to stop the damage until a full repair can be done properly. Call (830) 251-4560 and we’ll give you a straight answer on timing.
First-degree creosote is a light, dusty soot that brushes off easily during a standard sweep. Third-degree creosote is a hard, shiny, tar-like glaze that builds up in flues with poor draft or unseasoned wood, and it’s the type most likely to fuel a chimney fire. Third-degree often requires mechanical removal or chemical treatment, and it’s a sign of a larger draft or liner problem. In Fairfax homes with older liners and hillside drafting issues, we see third-degree buildup more often than people expect.
Yes, and that’s most of what we work on. Fairfax has a large stock of 1920s through 1950s homes with original brick chimneys. The masonry is often sound but the mortar has failed, and the liners are frequently cracked or unlined by modern standards. We’ve repaired a 1920s bungalow near the Fairfax Lumber & Hardware area where the homeowner had a smoking fireplace that wouldn’t draft. Our tech found a spalled chimney crown and a damaged flue liner with second-degree creosote buildup. We installed a new HeatShield liner and rebuilt the crown. The draft improved immediately, and the homeowner finally felt safe using the fireplace again. That’s typical of what we see across Fairfax.
If you need a chimney repair in Fairfax, call (830) 251-4560 for a free estimate. A real person answers, any time of day. We’ll schedule the inspection, show you the photos, and put the price in writing before any work begins.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving Fairfax and central Marin with documented chimney repair and inspection work.





Before
After
Before
After
Before
After