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 Duncanville
Chimney repair in Duncanville usually falls into two categories after a storm: a cracked crown or lifted flashing. Both let water into your brick veneer, and both show up the same way, as a ceiling stain or a musty smell near the fireplace. We run repair crews into Duncanville regularly from the Dallas-Fort Worth office, and we know the failure patterns in this city’s housing stock before we even ring the doorbell. Call (361) 492-4099 and you’ll get a live person, a written price before any work starts, and a repair guaranteed in writing for a full year.
Why Flint Chimney Co Dallas Is Duncanville’s Preferred Chimney Repair Company
We’ve worked on enough 1960s ranch homes and 1980s two-story brick veneers in Duncanville to know what the original builders got right and what they skipped. In Greenbriar and Ten Mile Creek especially, we see chimneys that never had a cap installed, flue tile that has cracked from decades of Texas heat, and crowns that have spalled so badly they look like gravel. A generic repair company treats those as surprises. We expect them.
Hank Delano runs our Chimney Repair operation, and the standard he enforces is simple: document everything before the first tool comes off the truck. That means photos of the crown, the flashing, the flue, and the smoke chamber, then a written price that covers the repair. No verbal estimates that float upward by Friday. No work you didn’t approve in writing.
Duncanville homeowners call us because the problem is rarely just one thing. A cracked crown is almost always paired with a lifted back pan on the flashing. A missing cap usually means a flue full of chimney swift nesting material by September. Fixing one and ignoring the other sends you back to the phone in six months.
Styles & brands we work with
Chimney Flashing Repair in Duncanville
Chimney flashing repair in Duncanville is the fix we schedule most often after severe thunderstorm warnings pass through southern Dallas County. Flashing is the metal, usually aluminum or galvanized steel, that seals the seam where your chimney meets the roofline. When straight-line winds get under a back pan or step flashing, water runs behind the brick veneer and travels down until it pools at a ceiling joist or a drywall seam. The stain you see on the bedroom ceiling isn’t where the water entered; it’s where it stopped.
A standard flashing repair in Duncanville runs $350 – $900 depending on how many sides of the chimney are involved and whether the existing metal can be re-sealed or needs full replacement. We typically replace with copper or 26-gauge galvanized when the old flashing is beyond saving. Copper costs more upfront, $150 – $400 extra on a standard chimney, but it outlasts aluminum by decades in Dallas County heat.
When Flashing Fails After a Storm
The first sign is a water stain on the ceiling below or adjacent to the fireplace, usually appearing within 48 hours after heavy rain. By the time the stain is visible, water has already been running through the chase for at least a season. Duncanville’s severe thunderstorms, especially the squall lines that roll through in May and October, hit flashing at its weakest point: the back pan, where water ponds during a downpour and wind drives it under the metal.
We inspect every flashing repair with a moisture meter on the interior framing and take photos of the lifted metal before we touch anything. You get those photos before you approve the price. No guesswork, no “trust us.”
Chimney Crown Repair in Duncanville
Chimney crown repair in Duncanville is what we do when the concrete or mortar cap on top of the chimney has cracked, spalled, or separated from the flue tile. The crown is the chimney’s roof. When it fails, water enters the brick structure itself, and here’s what matters in Duncanville specifically: the freeze-thaw cycle. A wet crown absorbs water, a January cold snap freezes it, and the expansion pops the crown apart further. Duncanville doesn’t get hard freezes every year, but it gets enough, and our hot humid summers do their own damage through thermal expansion.
Crown repair runs $400 – $1,200 in Duncanville depending on whether we’re sealing a hairline crack or cutting out and re-forming the entire crown. A full rebuild with a proper two-inch overhang and drip edge, the detail that keeps water from running down the brick face, is on the higher end. A saw-cut and seal runs lower. We’ll tell you which one your crown actually needs and why, with photos.
The Storm Crown Pattern
After a May squall line, we don’t find one crack in a Duncanville crown. We find a crown that has been slowly failing for five years, and the storm just finished the job. Sudden barometric pressure drops don’t crack concrete on their own, but they do expose crowns that were already compromised by heat and freeze cycles. Wind-blown debris, especially broken tree limbs from Duncanville’s mature oaks, can also chip the crown edge and start the spalling process.
Trusted Brands We Service in Duncanville
We stock common repair materials for Duncanville jobs and specify brands by what the chimney actually needs, not by what’s cheapest on the truck. For flue resurfacing and partial liner repair we use HeatShield, a ceramic coating system that repairs cracked flue tile without a full teardown. For waterproofing we use Gelco or Olympia Chimney sealants depending on the brick condition and exposure. Caps and bird screens are typically Olympia Chimney or Famco stainless. When we quote you a material, you can look it up and verify it’s professional grade. We mention the name on the written estimate.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Repair Problems We See in Duncanville Homes
- Uncapped flues in original construction. Builders in the 1970s and 80s frequently skipped caps entirely in Duncanville neighborhoods like Greenbriar and Ten Mile Creek. That means chimney swifts, raccoons, and wind-driven rain enter the flue directly. We install stainless caps with bird screens on most repair calls in these areas, not as an upsell but because the flue is full of nesting material or water damage.
- Cracked crowns from heat and freeze cycles. Duncanville’s hot humid summers expand the crown concrete; January freezes contract it. Repeat that for 40 years and the crown cracks. In homes built from 1965 to 1995, we see full-width crown cracks as the default condition, not the exception.
- Lifted flashing after severe thunderstorms. Straight-line winds get under step flashing and back pans, especially on the windward side of two-story brick veneers. Homeowners on Wheatland Road and the streets branching off it call us after the first heavy rain of May with ceiling stains that trace back to lifted flashing.
- Clay flue tile cracked by decades of Texas heat. Original clay liners in Duncanville homes have been expanding and contracting since the Nixon administration. The cracks start hairline and invisible, then open up during a chimney fire or a hard freeze. We see it with a camera, and we show you the footage before recommending whether a HeatShield resurfacing or a full relining is needed.
Pricing for Chimney Repair in Duncanville, TX
Most Duncanville repair jobs land between $350 and $1,900. Flashing repair runs $350 – $900. Crown repair runs $400 – $1,200. A chimney cap with installation runs $180 – $450. Waterproofing a standard brick chimney runs $300 – $600. If the job involves a HeatShield resurfacing or a new liner, that’s where the price climbs, $1,500 – $3,500 depending on flue length and access.
What moves the number is access and material, not mystery. A one-story ranch with a walkable roof is faster than a two-story where we’re setting up a ladder on a sloped lot. Clay tile is cheaper than stainless, but stainless lasts 25 plus years. We give you one written price before any work starts, and that’s the invoice. Estimates are free. Call (361) 492-4099 and we’ll come out and put it in writing.
We Also Serve Cities Near Duncanville
Our repair crews cover Duncanville and the surrounding southern Dallas County area, including Irving, Dallas, Balch Springs, and Seagoville. If you’re a few minutes outside Duncanville on a county road or a subdivision off Belt Line, call us anyway. We schedule repair work by day and route, not by a hard city line.
Serving Duncanville, TX - Our Local Coverage Area
We’re based in the Duncanville 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 Duncanville
You’ll see a water stain on the ceiling below or adjacent to the fireplace, usually within 48 hours after heavy rain. It may appear as a yellowish ring, a dark patch, or peeling paint. The stain is from water that entered at the flashing seam and traveled down through the chase. Don’t wait for a second storm to confirm it. Call (361) 492-4099 and we’ll inspect with a moisture meter and photos before quoting anything.
Look for visible cracks wider than a hairline, missing chunks of concrete around the flue tile, or a crown that has pulled away from the flue. If you can see any of these from the ground, you already have a water problem. A crown that has separated from the flue tile lets water run straight down into the smoke chamber. Call (361) 492-4099 and we’ll do a full crown inspection with photos, then quote a repair or rebuild in writing.
Builders in Duncanville’s 1960s through 1980s housing boom often skipped chimney caps as a cost-cutting measure. Without a cap, the flue is open to rain, chimney swifts, raccoons, and wind-blown debris. By the time we arrive for a repair call in Greenbriar or Ten Mile Creek, the flue usually has nesting material or water damage behind it. Installing a stainless cap with a bird screen is part of the repair, not an add-on, when the flue has been exposed.
Yes. Water that enters through a cracked crown or lifted flashing soaks the brick and the clay flue tile. The next freeze expands that water and cracks the tile from the inside. You won’t see it from the yard. You’ll see it on a camera inspection, which we run as part of any repair that involves water intrusion. We show you the footage and explain what it means before recommending HeatShield resurfacing, a new liner, or no liner work at all if the tile is still sound.
Yes, because water and weather don’t stop just because the fireplace is idle. An uncapped or damaged chimney is still taking on water through every storm season, and the damage compounds year over year. A chimney that hasn’t been used is often in worse shape than one that’s been burning regularly, because small water problems go unnoticed. Call (361) 492-4099 for a camera inspection before the first cold front, and we’ll tell you plainly what needs repair now and what can safely wait.
Written by Hank Delano, Owner at Flint Chimney Co Dallas, serving Duncanville and southern Dallas County.