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Tamko Flashing Replacement: The Ventura Owner’s Guide
Tamko flashing replacement in Ventura typically runs $380 to $740 installed, depending on which flashing piece failed and how much of the surrounding shingle needs to be pulled back to get a clean seal. We stock Tamko-compatible step flashing, pipe boot flashing, valley metal, and headwall flashing on our trucks, and most single-piece replacements go in the same day we diagnose them. Homeowners usually find the problem after a rainy week when a ceiling stain shows up near a chimney, skylight, or plumbing vent, or during a roof inspection when the metal has worn thin and separated at the seams. The good news: flashing fails long before the shingles do in most Ventura homes, so catching it early usually means a repair, not a re-roof.
Key Takeaways:
- Tamko flashing replacement in Ventura costs $380-$740 installed for most single-piece jobs.
- Flashing fails faster than shingles in coastal sun and salt air – this is normal wear, not a defect.
- We stock Tamko-compatible flashing on the truck, so no week-long parts wait.
- Every repair gets a 365-Day Done Right Promise in writing, at no extra cost.
Which Tamko Models This Applies To
Tamko flashing isn’t tied to one shingle model – it’s a system of metal pieces that works across the full Tamko line, including Heritage, Heritage Premium, Elite Glass-Seal, and Titan XT. The same step flashing and pipe boots go on a Heritage shingle roof as a Heritage Woodgate shake-look roof. What matters more is the roof’s geometry and what’s penetrating it: chimneys, skylights, plumbing vents, dormer walls, and valley intersections each take a different flashing profile.
Here’s the compatibility gotcha most Ventura homeowners don’t know until it’s too late: Tamko’s color-matched flashing and ridge cap are not universal across distributors. A Heritage Weathered Wood roof installed in 2016 may have used flashing metal from one regional supplier, and the same color name from a different vendor can come off slightly different. It doesn’t affect function, but if you care about the metal matching perfectly at the chimney, we match by physical sample, not just by color name. We also work with quality aftermarket flashing that meets or exceeds Tamko’s OEM spec for gauge thickness – 26-gauge galvanized or 24-gauge for coastal Ventura homes within a mile of the ocean, where salt air eats thinner metal faster.
Crestview Roofing Co Ventura is an independent roofing contractor – we’re not affiliated with Tamko, but we install and repair using manufacturer-backed materials from Tamko, GAF, Owens Corning, and CertainTeed, so the parts we put on your roof are the real thing.
Styles & brands we work with






Signs Your Tamko Flashing Replacement Is Failing
- Ceiling stain or drips near a chimney or vent after rain. Water follows the path of least resistance, and a failed chimney counterflashing lets it run straight down the roof deck and into the ceiling below. By the time you see the stain, the flashing has been leaking for weeks.
- Lifting or curling step flashing visible from the ground. Step flashing is the L-shaped metal woven between shingles where a roof meets a wall. When the sealant dries out and the metal starts to lift, wind-driven rain gets behind it.
- Rust-through on pipe boot flashing. The rubber gasket around your plumbing vent pipe bakes in Ventura’s sun year after year. Once the rubber cracks or the galvanized metal rusts through, water follows the pipe straight into the attic.
- Discolored or missing valley metal. Valleys carry more water than any other part of the roof. If you can see bare wood or rust streaks in a valley, the flashing has failed and water is getting under the shingles on both sides.
- Granules in your gutters plus an old roof. Granule loss itself isn’t flashing failure, but on a 15-to-20-year-old Ventura roof, worn shingles and worn flashing often fail together. If your gutters are filling with granules and you’ve seen stains near penetrations, the flashing is almost certainly at end of life too.
See the difference
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After
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Before
AfterReplacement Cost & What’s Included
In Ventura, a single piece of Tamko-compatible flashing replacement runs $380 to $740 installed. Here’s what that covers:
- Step flashing (8-10 linear feet): $380-$520. Includes pulling the shingles along the wall line, replacing the metal, and re-sealing.
- Pipe boot flashing (one plumbing vent): $380-$460. Includes new rubber boot, roof cement, and shingle re-securing around the pipe.
- Chimney counterflashing and step flashing: $560-$740. Requires cutting a new reglet into the mortar and installing new metal, plus sealing.
- Valley metal replacement (one valley, up to 20 feet): $520-$740. Includes tearing out old metal, checking the decking underneath, and installing new valley metal.
What drives the range is access and decking condition. A single-story roof with a 6/12 pitch is straightforward. A steep two-story chimney or a valley with rotted sheathing underneath takes longer and costs more. You’ll get a written price before any work starts – the number on the page is the number on the invoice. And every flashing repair is covered by our 365-Day Done Right Promise: if it fails within a year, we come back and fix it at no charge.
DIY or Call Us?
You can safely do a visual inspection from the ground or a ladder: look for lifted metal, visible rust, cracked rubber around pipes, and any water staining on the underside of the eaves near penetrations. What you shouldn’t do is climb onto the roof and start pulling shingles to replace flashing. Flashing work means peeling back shingles that have been nailed down for years, and if you tear one or fasten the metal incorrectly, you’ve created a bigger leak than the one you started with. Roof work on a Ventura home also means working on a surface that can hit 140 degrees in the summer sun. For a repair this specific, it’s Dylan’s honest take: if you have to ask whether you can do it, call us at (559) 249-4917 and we’ll give you a straight answer and a written price.
FAQs
Tamko flashing on a Ventura home typically lasts 15 to 20 years, but homes within a mile of the ocean can see failures in 10 to 12 years because of salt air corrosion. Coastal properties should use 24-gauge metal instead of 26-gauge to buy back a few extra years. Call (559) 249-4917 for an exact quote – estimates are free.
Small tears or lifted corners can sometimes be resealed with roofing cement, but that’s a temporary fix that lasts a season or two in Ventura’s sun. If the metal is rusted through or the sealant has failed in multiple spots, replacement is the only repair that won’t leak again next winter. Call (559) 249-4917 and we’ll tell you honestly which one you need.
Most single-piece flashing replacements take 2 to 4 hours once the crew starts. A chimney flash with new counterflashing and reglet cutting can take a full morning. We’ll tell you the timeline in writing before work starts, and we show up when we say we will – live arrival time you can track, not a four-hour window.
We stock Tamko-compatible step flashing, pipe boot flashing, valley metal, and headwall flashing on our trucks when we come out for a repair call. If your home needs a non-standard color match or a rare profile, we’ll source it and have it within a few days. Call (559) 249-4917 to confirm we have your match.
Written by Dylan Pace, Owner, Crestview Roofing Co Ventura at Crestview Roofing Co Ventura, serving Ventura and nearby areas.