Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Tamko Flashing Replacement: The Austin Owner’s Guide
Tamko flashing replacement in Austin typically runs $380 to $950 installed, depending on where the flashing sits and how much tear-out is involved. We stock Tamko-compatible flashing on our trucks, so most jobs we schedule are completed in a single visit. Homeowners usually discover the problem the hard way: a brown water stain spreading across the ceiling after a hard Austin thunderstorm, or granules from the shingles collecting in the gutter and a telltale dark line where the roof meets a chimney or wall.
Flashing is the metal strip work that seals the joints and transitions on your roof, everywhere a shingle run meets something else: chimneys, vent pipes, skylights, dormer walls, and valleys. When it fails, water gets in. It’s not dramatic, until it is. And by the time you see the stain inside, the leak has usually been working on your roof deck for weeks. We’ve pulled apart flashing jobs in Austin neighborhoods like Allandale and Brentwood where the metal looked fine from the ground but had corroded through under the shingle overlap.
Which Tamko Models This Applies To
Tamko’s flashing components are engineered to pair with their Heritage and Elite shingle lines, but the metal itself is a standard-profile product that works with nearly any architectural shingle on the market. If you’re in a home with Tamko Heritage shingles, the flashing we replace will be matched to the manufacturer’s recommended gauge and profile for that series, and we’ll verify the overlap so the warranty on the shingles stays intact. Tamko’s specs call for a specific step-flashing overlap pattern where walls meet roof decking, and we follow those measurements exactly.
Here’s the thing to know about OEM versus aftermarket: Tamko doesn’t manufacture the sheet metal themselves. Their flashing is produced to Tamko’s spec by third-party metal fabricators. A quality aftermarket flashing in the same gauge and profile performs identically, and in some cases actually gives you more material to work with. We’ll install either, depending on what’s available and what makes sense for the specific roof. The label on the shingle bundle tells you the series; the flashing itself is identified by gauge (typically 26 or 28 for residential), width (usually 4 to 10 inches depending on application), and profile bend.
Styles & brands we work with






Signs Your Tamko Flashing Replacement Is Failing
- Interior water stains near a wall, chimney, or vent. This is the classic symptom: a faint yellow or brown outline that begins near the ceiling and spreads. It almost always traces back to a flashing joint that’s opened up. The water travels along the roof truss, so the stain may not line up exactly with where the flashing has failed.
- Lifted or buckled flashing on the roof line. Austin’s freeze-thaw cycles do real work on metal. When flashing expands and contracts through the seasons, the nails that hold it down can pop, and the metal lifts. From an attic you can sometimes see daylight through these gaps, which is a message you should not ignore.
- Rust or corroded metal at roof joints. Austin humidity is unforgiving on ferrous flashing material. Older homes, particularly in neighborhoods like Hyde Park and Bouldin Creek, often have original galvanized flashing that’s been rusting for decades. Once the rust has thinned the metal to the point of small holes, water intrusion is constant, even if you can’t see it from outside.
- Granule buildup in gutters, local to one section of roof. When flashing fails, water runs sideways under the shingles. This accelerates granule loss on the shingles near the joint, which shows up as heavier-than-normal grit in the gutter below that section.
- Moss or algae growth concentrated near flashing lines. Persistent moisture at a flashing seam keeps the area damp enough for organic growth to take hold. If you see a green or black streak starting at a chimney and widening downward, that’s a flashing leak feeding the growth.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s the straight number: for most single-family homes in Austin, Tamko flashing replacement runs between $380 and $950 installed. The low end covers straightforward step flashing replacement on a small roof-to-wall joint where the shingles can be lifted and the metal swapped without disturbing the roof deck. The high end covers chimney flashing with new counterflashing, removal of old caulk and sealant, and sometimes partial shingle replacement around the repair zone.
What drives the range: the location of the flashing, the amount of material needed, and how much demolition is required to get to it properly. A vent pipe flashing replacement is quick work. A chimney saddle that requires cutting a reglet groove into masonry is a whole different job. Every quote we write includes the part cost, labor, and waste removal. You see the line items before we start. Our 365-Day Done Right Promise covers every flashing replacement: if anything about that repair fails within a year, we come back and fix it at no charge, including the second visit. That’s in writing, on every job.
DIY or Call Us?
Here’s our honest take: flashing replacement is one of the worst DIY candidates on the roof. Not because the metal work itself is complex, but because to do it right you have to lift installed shingles, remove old sealant, set the new flashing in the correct overlap, and re-nail it without creating new leaks. On most roofs, the shingle you need to lift is also the one keeping water out of the nail holes you can’t see. Around chimneys, the work involves working off ladders on steeper pitches. That’s where we see the highest number of homeowner-repair failures, and in Austin’s late-summer heat, a roof surface can hit 140 degrees. Not a place to learn metalwork.
What you can do safely is inspect from the ground with binoculars, check your attic after rain with a flashlight, and call us with what you find. We’ll tell you honestly whether it’s urgent or can wait. Call (254) 587-6371 and we’ll put eyes on the flashing before we quote a dollar figure. As Dylan Pace puts it: “If it’s not in writing, it’s just a conversation.” Every quote we give you is written, line-itemed, and fixed before any work starts.
FAQs
Expect 15 to 25 years from properly installed flashing in Austin, with the wide range driven by material type (aluminum vs galvanized steel vs copper), sun exposure, and whether the flashing sits in a valley that channels constant water. Aluminum flashing on the south-facing side of an Austin roof degrades faster from UV and thermal expansion than the same material on the north side. We’ve seen 30-year-old copper flashing still performing fine in Tarrytown, and 12-year-old galvanized flashing that’s rusted through in East Austin. Our inspections give you the real remaining life, not a generic estimate.
Sometimes, but it’s a temporary fix at best. Small gaps in step flashing can be caulked or sealed with roofing cement, which may buy you a season or two. If the metal is rusted, bent, or pulling away at the nail points, sealing it just moves the leak to the next weak point. We’ll tell you when a repair makes sense and when it’s throwing money at a part that’s done. If we repair it, the same 365-Day Done Right Promise applies either way.
Most flashing replacements on a single-family Austin home take between 2 and 4 hours from setup to cleanup. Vent pipe flashing can be done in under an hour. A full chimney flashing rebuild with new counterflashing can take most of a day, particularly if masonry work is required. Before any work starts, you get a written time estimate as well as a written price, and we send photo documentation before and after so you can see exactly what was done.
We stock common Tamko-compatible flashing profiles on our trucks: step flashing, vent pipe collars, valley metal, and drip edge in both aluminum and galvanized steel. For unusual sizes or copper flashing, we source from local Austin metal suppliers and schedule the install once the material arrives, usually within a few days. We also work with flashing matched to GAF, Owens Corning, and CertainTeed product lines, so whatever your roof wears, the metal we install is built to match it.
Call (254) 587-6371 for a free flashing replacement estimate. We’ll give you the written price, the material spec, and the arrival time before anything goes on the roof. Dylan and the Crestview Roofing crew serve Austin and the surrounding areas, and we answer the phone when you call. That part we’ve never stopped doing since 2000.
Written by Dylan Pace, Owner, Crestview Roofing Co Austin at Crestview Roofing Co Austin, serving Austin and nearby areas.