Tamko Flashing Replacement Nationwide

Tamko Flashing Replacement: The Dallas Owner’s Guide

Tamko flashing replacement in Dallas typically runs $14 to $22 per linear foot installed, so a standard chimney or wall flashing job lands between $350 and $900 depending on how much metal has to come out and how the existing roof was tied in. We keep Tamko-compatible step flashing, counter flashing, pipe boots, and valley metal on the truck, and most flashing-only replacements are done in one trip. What you’ll usually notice first is a stain on the ceiling near an exterior wall, a drip in the attic after a hard North Texas rain, or granule loss and rust showing at the base of a pipe boot or chimney chase.

Call (903) 499-4441

Flashing is the metal that connects your shingles to anything that pokes through or interrupts the roof: chimneys, walls, vents, skylights, valleys. When it fails, water gets behind the shingles and travels. By the time you see the ceiling stain, the leak has usually been working for a while. The good news is Tamko flashing replacement is a targeted repair, not a re-roof, and it costs a fraction of what people assume when they first see the damage.

Which Tamko Models This Applies To

Tamko flashing is manufactured and matched to their shingle lines, but the flashing itself is made from standard-galvanized, aluminum, or copper sheet stock cut to Tamko’s published profiles. It pairs with Heritage, Heritage Premium, Elite Glass-Seal, and Twinflow series installations across Dallas, and the compatibility question usually comes down to material and profile, not a proprietary lock-in. If your roof has architectural shingles from any Tamko line, the flashing is either step flashing tucked under each course, or counter flashing cut into mortar joints on brick.

Here’s the gotcha most people miss: Tamko’s roof-to-wall step flashing spec calls for 4-inch by 4-inch by 8-inch kickout pieces at the bottom of every wall run. A lot of Dallas roofs built in the 2000s boom skipped the kickout, or used two-inch exposed flashing instead of the four-inch minimum Tamko’s installation spec requires. That’s the single most common source of a “mystery leak” we get called out for in neighborhoods like Lake Highlands and East Dallas. If you’re replacing one section of flashing on a Tamko roof, the replacement has to match the existing gauge and profile, or the seams will never seal right against Dallas hail and wind cycles. We stock OEM-spec Tamko flashing profiles plus aftermarket equivalents from GAF, Owens Corning, and CertainTeed when the job calls for it, and we’ll tell you plainly whether the aftermarket piece is functionally identical or a downgrade.

Signs Your Tamko Flashing Replacement Is Failing

• Ceiling stains near exterior walls or corners. This is the classic signature of failed step flashing along a wall intersection. Water runs behind the flashing, down the wall framing, and shows up inside before you ever see anything on the roof itself.
• Rust trails or corrosion at the base of a pipe boot. The rubber boot around plumbing vents and furnace stacks degrades under Texas UV, and the metal collar starts rusting at the seam. Once you see rust staining the shingles below a pipe, the boot is done.
• Granules collecting in valleys or behind the chimney. Flashing that has lifted lets water under the shingle edges, which loosens granules and causes premature shingle wear in a pattern that follows the flashing line. Check valleys after heavy rain for a gray-brown streak.
• Visible gaps, lifted edges, or missing kickout flashing. After a Dallas windstorm, walk the perimeter with binoculars and look at where the roof meets any vertical wall. If the metal is curled, bent, or pulled away from the mortar, it’s no longer shedding water.
• Damp attic insulation or framing against brick. Counter flashing that has popped out of the mortar joint lets water drain straight down the brick face into the attic. This happens gradually, and you’ll smell musty air in the attic before you see staining inside.

Replacement Cost & What’s Included

Here’s the straightforward Dallas pricing picture. Step flashing replacement along a wall runs $14 to $18 per linear foot. Chimney flashing replacement, which includes cutting out old counter flashing and re-mortaring, runs $450 to $900 total depending on chimney size and how much brick work is needed. Pipe boot replacement is $180 to $300 per boot. Valley metal replacement runs $12 to $16 per linear foot. These are installed prices, not just parts.

What moves the price: whether the flashing is under shingles that have to be lifted and re-nailed, whether there’s rotted decking underneath that has to be cut out, and whether any masonry needs re-pointing around the counter flashing. Before any work starts, you get the price in writing. That’s what we do at Brennan Roofing Co Dallas, and the number does not move at the door. Every flashing replacement carries a one-year written guarantee under the 365-Day Done Right Promise, and if it fails within that year, we come back and fix it at no charge.

DIY or Call Us?

You can safely inspect the flashing yourself with a ladder and a pair of binoculars, and if you’re comfortable on a one-story roof you can check for loose or lifted metal by hand. What you should not do is try to replace flashing without knowing how to lift shingles without tearing them, how to re-seal nail heads with the right sealant, or how to cut counter flashing into brick. Plenty of Dallas homeowners have tried the YouTube fix on a chimney and ended up with a worse leak than they started with. Flashing sits at the exact intersection of roofing and waterproofing, and a bad flashing job is a water intrusion problem that hides until it rots decking.

If you want to check things yourself first, look for lifted metal, missing kickouts, and rust around pipe collars, then call us at (903) 499-4441 and tell us what you saw. We’ll give you a straight read over the phone, and if it needs replacement, the price goes in writing before anyone picks up a tool.

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