When resealing won't hold, we replace the flashing the right way — new step and counter flashing set into the masonry for a leak fix that lasts.
There's a point where you stop resealing flashing and replace it. When the metal is corroded, the flashing was never installed correctly, or repeated patch jobs keep failing, a proper replacement is what finally stops the leak for good. Done right, replacement isn't a bead of caulk — it's new step and counter flashing integrated into both the roof and the masonry, the way flashing is actually supposed to be built. On Dallas homes with older or tar-patched chimneys, it's often the honest answer.
A permanent flashing system has two layers working together:
That two-part, into-the-mortar approach is what separates flashing that lasts decades from a surface patch that fails in a season. It's more work than smearing sealant, and it's the reason a proper replacement actually ends the leak.
The ideal time to replace flashing is during a reroof, because the new step flashing integrates with the new shingles as they go on. If you're already planning to re-roof a Dallas home, replacing the chimney flashing at the same time gives you the strongest, best-integrated result — and avoids a roofer's generic tar job that you'll be calling us about in a year. If your roof is sound, we can still replace the flashing on its own and tie it in properly without disturbing the field of the roof.
Permanent step-and-counter flashing replacement across Dallas.
(214) 225-8874A failed flashing joint doesn't stay a roof problem. Water tracking in along the chimney rots roof decking, stains ceilings, rusts the damper, and works into the masonry — damage that's far more expensive than the flashing itself. Replacing failing flashing correctly, once, protects all of that. If water has already been getting in, we'll check for water damage the leak left behind, so the replacement isn't sealing over an active problem.
Replacement costs more than a reseal because it's a rebuilt system with new metal cut into the masonry — but it's a one-time, lasting fix rather than a patch you repeat. Price depends on the chimney size, the roof type, whether it's coordinated with a reroof, and access. You'll get a clear, itemized quote before we begin, and we'll only recommend replacement when a repair genuinely won't hold.
"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!"
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Repair reseals or re-secures flashing that's still fundamentally sound. Replacement installs an entirely new system — step flashing woven into the shingles and counter flashing set into the mortar — for flashing that's corroded, incorrectly installed, or repeatedly patched. Replacement is the lasting fix when a reseal won't hold.
Two layers that work together. Step flashing is individual metal pieces woven into the roof shingles along the chimney sides. Counter flashing is a second layer set into a groove cut in the mortar joints and folded over the step flashing. Together they keep water from getting behind the flashing — the proper, durable way to flash a chimney.
Yes, when possible. During a reroof the new step flashing integrates with the new shingles as they're installed, giving the strongest result and avoiding a generic tar job. If your roof is sound, we can still replace the flashing on its own and tie it in properly.
Because it's a rebuilt two-layer system with new metal cut into the masonry, not a bead of sealant. That's exactly why it lasts decades instead of cracking in a season. The higher upfront cost replaces the cycle of repeated patch jobs and the interior damage a failing joint causes.
A lot. Water tracking in along the chimney rots roof decking, stains ceilings, rusts the damper, and soaks the masonry — all far costlier than the flashing. If water's already been getting in, we check for the damage it left behind so the new flashing isn't sealing over an active problem.
Straight answers from our DFW chimney pros before you book.
