Tamko Flashing Replacement: The Dallas Owner’s Guide
We stock and install Tamko-compatible flashing replacement across Dallas, with most jobs running $340-$780 installed depending on location and roofing material. Same-day service is available when you call before noon, and we carry the common Tamko profiles on every truck. Most homeowners in Dallas discover their flashing has failed during a hard rain, when water shows up at the ceiling edge or stains the soffit where the roof meets a wall, dormer, or chimney.
Which Tamko Models This Applies To
Tamko’s flashing systems pair with their Heritage, Heritage Vintage, Heritage Woodgate, and Titan XT shingle lines, plus the MetalWorks steel and Riviera slate profiles. The critical match point isn’t the shingle brand itself, it’s the pitch, the deck condition, and whether your original installer used Tamko’s pre-formed step flashing, custom-cut valley metal, or their roll-formed chimney saddle kits.
To identify what you’ve got, look for the stamped Tamko part number on the exposed flange edge, or check your original build paperwork for references to TAM-FL series numbers. The Heritage line typically uses 4×5 inch step flashing in 26-gauge galvanized or 0.019 aluminum; Titan XT jobs often spec the heavier 0.024 aluminum for wind uplift rating.
We source OEM Tamko flashing through their Dallas-area distribution partners, but we’ve also fitted quality aftermarket equivalents from Drip Edge Systems and Austin Metals when the OEM lead time stretches past what a leaking roof allows. The aftermarket pieces match Tamko’s bend angles and apron lengths; where they differ is the factory Kynar finish match. For Heritage Vintage in Weathered Wood, we always verify the color chip under Dallas midday sun before ordering, because the same part number reads different under fluorescent warehouse light.
Signs Your Tamko Flashing Replacement Is Failing
- Water stains on interior wall-ceiling joints. This is the classic tell. When step flashing pulls away from the wall or the housewrap seal degrades, water follows the top edge of the flashing and runs inside the wall cavity. In Dallas, we see this accelerate after summer heat cycles have worked the fasteners loose.
- Rust streaks or green oxidation on the flashing face. Tamko’s galvanized steel flashing carries a 20-year corrosion warranty, but that’s under normal conditions. Dallas hail and accumulated leaf debris trap moisture against the flange, and we’ve found premature oxidation on north-facing chimney saddles as early as year eight.
- Lifted or buckled shingles at the wall intersection. Flashing that has slipped out of position loses the shingle overlap that sheds water. The shingle edge curls upward, and wind-driven rain gets underneath. This is especially common on the older Heritage installations where the 1.5-inch headlap was trimmed tight to the wall.
- Visible gaps between counter-flashing and masonry. On brick chimneys, the counter-flashing should be cut into the mortar joint and sealed. When the sealant ages out, Dallas freeze-thaw cycles in January and February open hairline cracks that become channels.
- Soffit or fascia rot below rake edges. Drip-edge flashing failure at the gable end lets water run behind the gutter and into the soffit box. By the time the paint bubbles, the OSB or plywood behind it is often compromised.
Replacement Cost & What’s Included
| Scope | Typical Range |
|---|---|
| Step flashing replacement (single wall, 1 story) | $340-$520 |
| Chimney saddle and counter-flashing rebuild | $580-$780 |
| Valley flashing replacement (open valley, 20 ft) | $480-$680 |
| Drip-edge replacement (full perimeter, average home) | $620-$890 |
What drives the range: height and pitch add labor time; multiple layers of old roofing mean more teardown; masonry cutting for counter-flashing requires a second technician. Our quote includes the Tamko-compatible flashing material, synthetic underlayment patch where needed, fasteners, sealant, and disposal. We don’t charge separately for the photo inspection or the written 90-Day Done Right Promise. The price we quote is the price you pay.
DIY or Call Us?
There’s a safe middle ground here. A homeowner can walk the perimeter with binoculars and spot the rust, the lifted shingles, or the missing sealant beads. You can check the attic during rain for active drips and mark the location. That information saves us time and saves you money.
Where DIY goes wrong is the removal and replacement itself. Flashing sits under overlapping shingle courses, and freeing it without tearing the surrounding field requires a flat bar, patience, and a feel for when the sealant strip will release. More critically, chimney work above eight feet on a 6:12 pitch or steeper is where falls happen. Clint Harwell picked up his foundational trade skills at Eastfield College in Mesquite, where the instructors were working roofers themselves and didn’t have much patience for shortcuts, and that training matters when you’re working at height with a hammer in your hand. If you’re not already comfortable on a roof, this isn’t the project to start with.
We’re not affiliated with Tamko, but we’re authorized to install their products and we know their flashing specs cold. Call (888) 309-8379 and we’ll walk through what you’re seeing, send a technician if needed, and give you a number you can count on.
FAQs
Properly installed Tamko galvanized flashing typically holds 15-20 years in Dallas conditions, though we’ve replaced chimney saddles at year 12 on homes with poor attic ventilation that superheated the metal. Aluminum profiles with Kynar finish can stretch toward 25 years if debris is cleared and sealant is touched up at year 10. Call (888) 309-8379 for a free inspection if you’re past the decade mark.
Small sealant failures and isolated fastener pops can be repaired, but once the metal itself is rusted through, bent, or slipped out of position, patching becomes a temporary fix that costs more in callbacks than replacement. We don’t recommend repairs that we wouldn’t warranty under our 90-Day Done Right Promise. Call (888) 309-8379 and we’ll tell you straight which category you’re in.
Most step-flashing replacements take 2-3 hours; a full chimney saddle rebuild runs 4-5 hours. We complete the work in one visit, photo-document before and after, and leave the site cleaner than we found it. Same-day scheduling is available when you call before noon.
We carry the common Heritage and Titan XT profiles in 4×5 step, 8-inch apron, and standard drip-edge configurations. Specialty colors and the heavier-gauge MetalWorks flashing we pull from Dallas-area supply houses, typically same-day. If your color is discontinued, we’ll show you the closest current match and let you decide before we order.
A roof doesn’t lie - and neither do we. If your Tamko flashing is showing any of the signs above, or if you’re not sure what you’re looking at, call (888) 309-8379. A live person answers every call, 24 hours a day, and we’ll get a background-checked, uniformed technician to your Dallas home with a clear estimate and no runaround. Done right - and if it’s not, we make it right.
Written by Clint Harwell, Owner, Ridgeline Roofing Co. of Dallas at Ridgeline Roofing Co. of Dallas, serving Dallas and nearby areas.