From Dalworth's mid-century rooflines to the new builds off Mira Lagos, we re-flash chimneys to actually stop the leak — not just slow it down.
Grand Prairie's chimneys take a beating that a lot of Metroplex suburbs don't see quite the same way. Between hail alley pounding metal flashing flat, high straight-line winds working screws loose, and clay soil shifting foundations under everything from Dalworth's older brick homes to the newer builds near the Peninsula and Mira Lagos, flashing seams open up fast. Once that happens, water finds the mortar joint above your fireplace and doesn't stop until it's in your ceiling. A proper chimney flashing replacement — not a bead of caulk over the old metal — is usually the only thing that actually solves it.
Flashing is the metal barrier where your chimney meets the roofline, and it only works if it's built in layers. Step flashing runs up the roof deck under each shingle course, while counter flashing is cut into the mortar joint above it and bent down to cover the step flashing's top edge. When either piece is missing, rusted through, or was originally just caulked to the brick instead of let into the mortar, water gets behind it during wind-driven rain — which is exactly the kind of weather Grand Prairie gets several times a year.
The north side of town — Dalworth, Westchester, and the older streets around central Grand Prairie — is full of mid-century masonry chimneys where the original flashing is decades past its service life, often thin galvanized metal that's rusted through at the seams. In the newer master-planned sections south of I-20, including around Mira Lagos and the Peninsula, you'll see more prefab metal chimneys with factory flashing kits that were sometimes installed in a hurry during the original build and never properly integrated with the roofing underlayment. Add in Grand Prairie's spot in hail alley — where storms can dent and puncture flashing outright — plus clay-soil movement that flexes foundations and slowly racks the chimney out of square with the roofline, and you get a city where flashing failure shows up early and often, regardless of which decade the home was built.
A lot of companies will offer to caulk over failing flashing and call it fixed. That buys you a season, maybe two, before the sealant cracks in the Texas heat-cool cycle and the leak comes right back. A full re-flash replacement pulls the old metal out, cuts a proper reveal into the mortar joint for new counter flashing, and re-integrates step flashing with the surrounding shingles. It's more labor up front, but it's the version that actually survives a Grand Prairie summer-to-winter swing without reopening. If you're already having roofing done, this is also the ideal time to combine it with chimney repair work so the mortar and flashing are addressed together instead of twice.
Serving Dalworth to Mira Lagos, seven days a week — get a straight answer on your flashing today.
(214) 225-8874Most homeowners notice flashing problems as water stains, not as visible metal damage, since the flashing itself is often hidden under shingles or behind the chimney crown.
If you're seeing any of these, it's worth reading up on how to tell a chimney leak from a roof leak before assuming the whole roof is at fault — often it's isolated to the flashing.
Pricing depends on a handful of factors we walk through before any work starts: whether your home has a masonry or prefab chimney, how much of the existing flashing and mortar needs to be removed, roof pitch and access, the metal type used for the new flashing, and whether the job is being coordinated with an active reroof (which usually simplifies labor). A mid-century masonry chimney in Dalworth with a full mortar-joint counter-flashing cut is a different scope than a prefab chimney flashing kit on a newer Peninsula-area home. Every project starts at $99 and we give you a written number before any work begins — no guessing, no surprise add-ons. Call (214) 225-8874 or request a Free Online Quote and we'll walk your specific roofline through the details.
"Very pleased with the professionalism and promptness of service. The chimney sweep was done quickly and efficiently at significantly less cost than the first quote I got from another company. Happy to recommend Lowes Chimney Sweep to anyone in Plano!"
"Outstanding chimney sweep service from start to finish. They were punctual, courteous, and left our chimney spotless with no mess in our home. I won't use anyone else for chimney services in Dallas TX!"
More reviews from homeowners across the metroplex are on our reviews section, or learn more about our team before you book.
If the stain shows up specifically along the wall or ceiling closest to the chimney, and not spread across the room, it's usually flashing. In Grand Prairie's older Dalworth and Westchester homes, original flashing is often the actual point of failure even when a roof looks otherwise fine.
Yes, flashing can be replaced on its own, though it's more efficient to combine it with a reroof if you're already planning one. Many Mira Lagos and Peninsula homeowners time it that way to avoid paying for access twice.
It can, since Grand Prairie sits in hail alley and flashing metal can dent or puncture even when the surrounding shingles look fine. We check flashing specifically during storm-related inspections rather than assuming shingle damage is the only issue.
Prefab chimney flashing kits are sometimes installed quickly during initial construction and not fully integrated with the roof underlayment. Combined with high wind common across the mid-cities, factory flashing can loosen years before the rest of the roof shows wear.
Some seasonal flex is normal across Grand Prairie due to clay-soil movement, which is why proper step and counter flashing built into the mortar joint holds up better than sealant-only fixes. A correctly installed re-flash is designed to tolerate that minor movement rather than crack under it.
Straight answers from our DFW chimney pros before you book.
