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CertainTeed Flashing Replacement: The Austin Owner’s Guide
We stock and install CertainTeed-compatible flashing replacement across Austin, with most standard flashing jobs running $350 to $850 installed depending on location and linear footage. We keep common CertainTeed flashing profiles on our trucks, so a single chimney or pipe boot replacement is usually a same-visit fix. Most Austin homeowners discover flashing failure the hard way: a water stain on the ceiling after a hard Hill Country downpour, or granules washing down the gutter from a spot that’s been silently leaking for months.
Flashing is the metal strip work that seals the joints where your roof meets a chimney, wall, skylight, or vent pipe. CertainTeed builds their flashing to pair with their shingle lines, but Texas sun and hail don’t care whose name is stamped on the metal. When flashing fails, water gets behind the shingles, into the decking, and eventually onto your ceiling drywall. By the time you see the stain, the leak has usually been active for weeks.
Here’s what Austin owners need to know before they call: the part itself is rarely the expensive piece. What you’re paying for is proper removal of the old flashing, correct re-sealing with compatible materials, and a roofer who knows how CertainTeed products age in Central Texas specifically.
Which CertainTeed Models This Applies To
CertainTeed flashing components are designed to work across their shingle lines, including Landmark, Landmark Pro, Presidential Shake, and XT 25 series. The flashing itself is usually aluminum or galvanized steel, and it’s manufactured in standard profiles: step flashing for walls, L-flashing for dormers, pipe boots for vent stacks, and custom bent pieces for chimneys and skylights.
If you’re trying to identify what’s on your roof, look for two things. First, check the brand stamp on any exposed flashing edge. CertainTeed marks most of their metal flashing with a small imprint. Second, measure the exposed face of the flashing if you can reach it safely. Standard residential step flashing is 5 inches by 7 inches with a 2-inch exposed face, but CertainTeed’s heavier gauge options run closer to 0.019 inches thick where cheaper aftermarket flashing might be 0.016 inches or less. That thickness difference matters in Austin hail season.
On OEM versus aftermarket: CertainTeed-branded flashing is solid metal, but it’s not magical. The real question is gauge and material compatibility. Galvanized steel lasts longer on Austin roofs than aluminum when paired with certain shingle adhesives, and we’ll recommend accordingly. We’re an independent roofing contractor, not affiliated with CertainTeed, so our recommendation is based on what holds up on the roof you actually have, not a brand loyalty pitch. If your roof is under CertainTeed warranty, we’ll use OEM-compatible flashing to keep that warranty intact.
Styles & brands we work with






Signs Your CertainTeed Flashing Replacement Is Failing
- Water stains on ceilings or upper walls after rain. This is the most common first symptom. The leak usually tracks along a rafter or wall stud before showing up on drywall, so the stain may not line up directly under the flashing failure.
- Curling, lifting, or missing step flashing along a wall-to-roof joint. Wind-driven rain over years can gradually pull nails and unseat flashing. Once it lifts even a quarter inch, water has a path behind the shingles.
- Rust streaks or visible corrosion on exposed flashing faces. Austin’s humidity combined with trapped leaf debris creates standing moisture against the metal, even on galvanized pieces. Once rust starts, the flashing is structurally compromised and needs replacement, not patching.
- Granule loss concentrated in one area near a chimney or pipe boot. Shingles erode faster where water is running in a sheet over them instead of shedding cleanly. That accelerates wear and points to flashing that isn’t directing water properly anymore.
- Caulking that’s cracked, shrunken, or peeling away from flashing edges. Some roofers caulk flashing joints instead of lapping them correctly. It works for a while, then fails. CertainTeed’s own installation guides call for proper overlaps, not caulk dependency. If you see cracking caulk, the flashing underneath likely needs attention too.
Replacement Cost & What’s Included
In Austin, most CertainTeed flashing replacement jobs run $350 to $850 installed. A single pipe boot or small section of step flashing sits at the lower end, usually $350 to $500. A full chimney flashing rebuild or complete step flashing replacement along a long wall can hit $700 to $850 or higher if we discover damaged decking underneath.
What drives the range? Three things: linear footage of flashing being replaced, whether we need to remove and re-set existing shingles to seat the new flashing properly, and the condition of the underlayment once we open things up. CertainTeed heavier gauge flashing costs slightly more than standard, but the material cost difference is usually under $60 on a typical job.
Every estimate includes written line-item pricing before work starts, so you’ll see exactly what the flashing costs, what the labor costs, and what the disposal costs. The number on that page is the number on the invoice. No surprises. Every flashing replacement is covered by our 365-Day Done Right Promise: if that flashing leaks within a year, we come back and fix it at no charge, including a free second visit if needed. That’s in writing on every job.
See the difference
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AfterDIY or Call Us?
Flashing replacement sits in the middle of the DIY risk scale. It’s not dangerous in the same way garage door springs are, but it’s the most common place where a homeowner’s confident fix turns into a leak that’s worse than the original problem. If you want to check things yourself, you can inspect exposed flashing from a ladder for visible damage, and you can look at the ceiling underneath for stains. That’s useful information for us.
What goes wrong with DIY flashing work: people reuse old nails, they don’t clean the shingle surface before applying sealant, or they lap flashing backwards so water runs into the joint instead of over it. CertainTeed shingles are forgiving, but flashing isn’t. If you get the overlap wrong, the leak doesn’t always show up immediately. It shows up in September, after two months of summer storms have soaked your decking.
If you’re on the fence, call us at (254) 587-6371 and describe what you’re seeing. We’ll give you a straight answer on whether it’s worth a service call or whether you can wait. That conversation costs you nothing.
FAQs
Expect 15 to 25 years from properly installed galvanized flashing in Central Texas, though hail, tree debris, and heavy storm cycles in neighborhoods like Tarrytown can shorten that. Aluminum flashing tends to run 12 to 18 years. If your shingles are being replaced at year 20, we recommend new flashing at that point regardless of condition. Call (254) 587-6371 and we’ll inspect yours during a free estimate.
Small tears or one lifted section can sometimes be re-seated and sealed, but rusted or corroded flashing should be replaced, not patched. Repairs are a temporary fix. In Austin’s wet season, a patch that fails mid-storm means water behind the shingles for days before you notice. Call (254) 587-6371 for an honest assessment, free.
Most flashing replacement jobs take 2 to 4 hours for a single chimney or pipe boot. Full step flashing along a long wall might run 4 to 6 hours. We’ll give you a written time estimate before work starts, and you’ll get before-and-after photos so you can see exactly what was done.
Yes, we stock standard CertainTeed-compatible flashing profiles and common pipe boot sizes. GAF and Owens Corning compatible materials are also on hand if that’s what your roof calls for. If your chimney or skylight needs a custom bend, we measure on-site and fabricate the same day. If you’d like to confirm before we arrive, call (254) 587-6371 and we can check our inventory for your specific setup.
What to Expect When You Call
We follow The Relay Standard on every job. You’ll get a written price before any work begins, a live trackable arrival time so you see exactly when our technician pulls into your driveway, before-and-after photos of the work, and a digital invoice sent by text. The person who shows up is background-checked, uniformed, and you’ll know their name before they arrive.
Dylan Pace runs the crew here at Crestview. He learned roofing at Los Angeles Trade-Technical College and spent two decades on rooftops before bringing the same fixed-price, put-it-in-writing approach to Austin. Around here, the rule is simple: “If it’s not in writing, it’s just a conversation.” You’ll get it in writing. Every time.
Call (254) 587-6371 for your free CertainTeed flashing replacement estimate. A live person answers, day or night.
Written by Dylan Pace, Owner, Crestview Roofing Co Austin at Crestview Roofing Co Austin, serving Austin and nearby areas.