Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
Gas fireplace serviceLevel 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 San Dimas
Chimney repair in San Dimas typically runs $350 – $2,800 depending on what’s actually wrong, and the most common issues we find north of Bonita Avenue are cracked terra cotta flue liners and spalling crowns that let moisture into the chimney system. If your fireplace smokes when the Santa Anas kick up or you’ve spotted crumbling mortar on the crown, call us at (661) 402-9036 for a free estimate. We serve every neighborhood in San Dimas, from the older ranch tracts off Arrow Highway to the newer foothill properties up toward the San Gabriel Mountains. Our Chimney Repair team knows exactly what this microclimate does to masonry chimneys, and we’ll show you photo proof of any damage before a single repair recommendation is made.
Why Hadley Chimney West Covina Is San Dimas’s Preferred Chimney Repair Company
Hadley Chimney West Covina has been doing chimney work since 2003, and the reason San Dimas homeowners keep calling us back comes down to one thing: we show you the problem before we ask for a dime. Every tech who rolls into San Dimas carries a camera that goes inside the flue, and you get before-and-after photos on every job, not just the big ones. That matters here because the housing stock north of Bonita Avenue, those 1960s and 1970s ranches with original masonry fireplaces, hides problems you can’t see from the ground.
Our crews know the difference between a San Dimas ranch built in 1972 and a newer foothill custom home built in 2015. They’re background-checked, uniformed, and they arrive in a tracked window, so you know exactly when we’re pulling up to Calle Pomona or Valley Center Drive. Cory Mitchell leads our team, and the standard he’s set is simple: a written price before any work starts, a written guarantee on every repair, and a free second visit if a repair fails within 365 days. That’s the Relay Visibility Guarantee, and it’s baked into every job we do for San Dimas homeowners.
Styles & brands we work with
Chimney Crown Repair in San Dimas
Chimney crown repair in San Dimas usually runs $450 – $1,200 depending on whether we’re sealing hairline cracks or rebuilding the crown with a proper drip edge and new concrete. The crown is the concrete slab at the very top of your chimney, and its whole job is to shed water away from the flue. In San Dimas, Santa Ana winds drive rain sideways into crowns that were poured decades ago without the overhang a modern crown needs. That sideways rain gets into hairline cracks, freezes during cold snaps, and turns a small spall into a chunk of missing concrete by spring.
What a crown repair actually involves
When we rebuild a crown in San Dimas, we remove the failed concrete, inspect the top course of brick and the flue liner beneath it, then pour a new crown with a drip edge that keeps water off the brick. We also check the damper at the same time, because a rusted damper is usually the first sign a crown has been failing quietly for years.
When a San Dimas homeowner needs this
You need crown repair when you can see cracks wider than a dime, when chunks of mortar are missing along the top edge, or when you notice water staining on the ceiling near the fireplace after a good rain. The earlier you catch it, the cheaper it is, because crown failure left alone turns into spalling brick and eventually a partial rebuild.
Chimney Repair Companies in San Dimas
Chimney repair companies serving San Dimas are not all built the same way, and if you’re comparing quotes for a liner replacement or a crown rebuild, ask one question: will they show you photo proof of the damage before they recommend the fix? Hadley Chimney West Covina will. A full chimney inspection with photos in San Dimas typically runs $250 – $400, and we’ll walk you through every image on the camera so you understand exactly what you’re seeing and whether it needs attention now or can safely wait.
What separates a thorough repair company
A thorough chimney repair company in San Dimas will look at the whole system, not just the firebox: the crown, the flashing where the chimney meets the roof, the flue liner, the smoke chamber, and the damper. We do all of that on every visit, and we also check the surrounding masonry for the kinds of thermal stress cracks that show up after decades of mountain-adjacent winters.
San Dimas homes need a local eye
Here’s the thing about Chimney Repair in San Dimas: the failure patterns here are specific. Cool, damp winters mean frequent fires, and frequent fires mean heavier creosote loading. Summer heat and Santa Ana wind cycles dry the masonry out, which causes micro-cracking. A company that only sees perfect suburban chimneys in mild climates won’t know to look for the combination of both problems in the same chimney. We do.
Trusted Brands We Service in San Dimas
We stock and install materials from brands chimney pros actually rely on, including HeatShield ceramic repair compound, DuraFlex flexible stainless steel liner systems, and Olympia Chimney caps and dampers. When a San Dimas homeowner needs a cracked terra cotta liner replaced, we typically pull a DuraFlex liner off the truck the same day rather than ordering a part and making you wait two weeks. If the damage is thermal cracking in the smoke chamber, HeatShield’s ceramic resurfacing system can often restore it without a full rebuild. And when we find a rusted damper or a missing cap on a ranch home off Bonita Avenue, Olympia parts are usually what we’re installing.
Common Chimney Repair Problems We See in San Dimas Homes
- Cracked terra cotta flue liners north of Bonita Avenue. Original liners from the 1960s through 1980s crack under repeated thermal stress, and those cracks let hot gases reach combustible framing. This is the single most common hidden issue we find during Level 2 inspections in this part of San Dimas.
- Spalling chimney crowns from sideways Santa Ana rain. Crowns without a proper drip edge absorb moisture, and San Dimas’s wet winters plus freeze-thaw cycles chew them apart. By spring, homeowners see chunks of concrete in the gutter and water staining around the fireplace.
- Third-degree creosote glaze in rural foothill properties. Wood stoves used as primary heat in the foothills can accumulate hard, shiny creosote glaze in a single season. A plain sweep won’t remove it; it requires chemical treatment or mechanical removal, and skipping it is how chimney fires start.
- Rusted dampers and missing caps on 1970s ranch fireplaces. Dampers are exposed to everything that enters the flue, and when a crown fails or a cap is missing, they rust through in a few seasons. A rusted damper wastes heat and lets downdrafts push smoke back into the living room whenever the wind shifts.
See the difference
Before
After
Before
After
Before
AfterPricing for Chimney Repair in San Dimas, CA
Here’s honest pricing for the San Dimas market. A standard chimney sweep and inspection runs $180 – $300. A chimney cap installation with a new cap runs $250 – $500. Crown repair, as covered above, lands between $450 – $1,200. Flashing repair around the chimney penetration typically costs $300 – $700. A full stainless steel liner replacement runs $1,800 – $3,200 depending on flue height and access. Mortar repointing and tuckpointing runs $15 – $25 per square foot. What moves a price up in San Dimas is access: steep foothill roofs near the Bonita Avenue hillsides and some of the newer custom homes require more careful staging, and that’s reflected honestly in your written quote, not sprung on you after we’re already on the roof. Every estimate is free, and nothing is recommended without camera evidence you can see for yourself.
We Also Serve Cities Near San Dimas
Hadley Chimney West Covina runs crews to neighborhoods across the eastern San Gabriel Valley and foothills. If you’re in La Verne, Glendora, Covina, or Azusa, we cover those areas with the same tracked arrival windows, photo documentation, and written pricing we bring to every San Dimas job.
Serving San Dimas, CA - Our Local Coverage Area
We’re based in the San Dimas 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 Dimas
The original terra cotta flue liners installed in 1960s through 1980s ranch homes crack under decades of thermal stress, and cracks that aren’t visible from the firebox let hot gases and carbon monoxide reach the space between the flue and the framing. A Level 2 inspection, which uses a camera inside the flue, is often the first time anyone sees the damage. If your home still has original terra cotta and you’ve never had a camera inspection, call (661) 402-9036 and we’ll show you exactly what’s in there.
San Dimas’s wet winters mean crown problems get worse every freeze-thaw cycle, so repairs scheduled for late summer or early fall have the best window to cure properly before the rains return. But if you’re seeing active water intrusion, waiting is more expensive than fixing it now. We’ll give you a straight answer on whether your crown can wait until the dry season or needs attention before the next storm.
Yes, but you’ll need to sweep more often, because burning continuously in a foothill climate creates the conditions for hard, glazed creosote that a standard sweep can’t remove. We recommend burning well-seasoned hardwood, avoiding long smoldering burns with the damper choked way down, and scheduling a sweep before the heating season rather than after it. If glaze has already formed, we use chemical or mechanical removal, and we’ll show you photos of the before and after so you know exactly what was in your flue.
Both. Newer custom homes in the foothills often have taller chimneys and more complex rooflines, and their crowns are sometimes poured thinner than they should be, which leads to early cracking in the same sideways-rain conditions that damage older ranches. We repair crowns on every type of San Dimas home, and we’ll match the crown profile to the home so the repair doesn’t look like a patch job.
The most common hidden issue is a vertically cracked terra cotta flue liner, usually in the flue serving a wood-burning fireplace in a ranch home north of Bonita Avenue. The cracks run top to bottom along the mortar joint, and they’re invisible without a camera. When we find one, we typically install a DuraFlex stainless steel liner, which gives you a continuous, insulated flue that doesn’t crack again. Call (661) 402-9036 for a camera inspection and a written quote on the fix.
One San Dimas Chimney, Rebuilt Right
Our tech took a call from a homeowner on Calle Pomona whose 1970s ranch had a smoking fireplace every time the Santa Anas kicked up. Inside the flue, we found a cracked terra cotta liner with third-degree creosote glaze, and the chimney crown was spalling from years of wet winters. We installed a DuraFlex stainless steel liner, rebuilt the crown with a proper drip edge, and added a chimney cap. Now the draft holds steady and the firebox stays clean, and the homeowner has photos of every layer of that repair. That’s the visibility we think every San Dimas homeowner deserves.
Call Hadley Chimney West Covina for Chimney Repair in San Dimas
If you own a home in San Dimas, you don’t need to wonder whether your chimney is safe. You need a camera in the flue, a written price before the work starts, and a repair that comes with a 365-day written guarantee. That’s what we do on every single job. Call (661) 402-9036 and a live person will answer, 24/7, ready to book a camera inspection at your San Dimas home. Or if you’re in La Verne, Glendora, Covina, or Azusa, we’ll bring the same standard to your door.
Written by Cory Mitchell, Owner at Hadley Chimney West Covina, serving San Dimas and the eastern San Gabriel Valley since 2003.