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Tamko Flashing Replacement: The Orange County Owner’s Guide
Tamko flashing replacement in Orange County typically runs $350 to $950 installed, depending on the flashing type, roof pitch, and how many linear feet we’re replacing. We stock Tamko-compatible flashing on our trucks, so most jobs get done in one visit. The way most homeowners find out their flashing failed isn’t a missing shingle or a cracked tile. It’s a water stain on the ceiling, a rust streak down an exterior wall, or damp drywall near a chimney. By the time you see that, the flashing has usually been failing for months. Here’s what you need to know about getting it fixed right in Orange County, where salt air near the coast and intense UV inland both work against metal flashing year-round.
Key Takeaways
- Tamko flashing replacement in Orange County costs $350 to $950 installed in most cases, with chimney and skylight flashing at the higher end.
- We stock Tamko-compatible flashing profiles on our trucks, including step flashing, pipe collars, and valley metal, so we can usually quote and complete the work in one trip.
- The price you get in writing before we start is the price you pay. No change orders unless you add scope.
- Every flashing replacement carries our 365-Day Done Right Promise, in writing, with a free return visit if it fails within that year.
Styles & brands we work with






Which Tamko Models This Applies To
Tamko’s flashing isn’t branded one-offs that only fit certain shingle lines. Tamko manufactures standard galvanized and aluminum flashing profiles that work across their Heritage, Elite Glass-Seal, and Titan XT shingle lines, as well as their MetalWorks steel roofing. The part that matters is the profile and material, not the shingle name. Step flashing for a sidewall on a Heritage roof is dimensionally the same as what a Titan XT roof takes. What changes is the metal gauge and the finish. Here’s the one compatibility gotcha most homeowners run into: Tamko’s steel flashing for MetalWorks panels is not the same as the aluminum step flashing used with their asphalt shingles. The profiles don’t interchange. If a roofer shows up with a generic aluminum piece for a Tamko steel roof, it’s the wrong part, and it will corrode faster at the contact points. We check the existing flashing profile and roof material before we quote, because putting aluminum against certain steel profiles sets up galvanic corrosion. On most Orange County shingle roofs, standard 26-gauge galvanized step flashing bends and seals correctly. On coastal homes within a mile or two of the beach, we recommend upgrading to a heavier gauge or a factory-coated finish. Salt spray chews through light flashing fast out there. You can identify your current flashing by measuring the vertical rise and the horizontal leg, then checking the profile against Tamko’s current catalog. Or you can call us and we’ll do it from the roof.
Signs Your Tamko Flashing Replacement Is Failing
- Water stains near the chimney or skylight. This means the counterflashing or base flashing has lost its seal. The metal may look fine from the ground; the problem is usually a dried-out sealant joint or a rust-through you can’t see until you’re up there.
- Rust streaks down the roof or exterior wall. Surface rust on exposed flashing isn’t cosmetic. Once rust starts in Orange County’s coastal air, it spreads under the shingle course and creates a channel for water. We see this constantly in Huntington Beach and Newport Beach homes.
- Lifted or curled step flashing along a sidewall. This is almost always an install error, not a product failure. If the original roofer nailed the flashing to the wall sheathing instead of the roof deck, thermal expansion pops it loose. The flashing then funnels water behind the siding.
- Debris dams or ice dams at valley metal intersections. Even in Orange County, leaf litter and pine needles in the foothills around Trabuco Canyon or Silverado back up water at valley transitions. If the valley flashing is older than the roof, it’s often the first piece to go.
- Damp drywall or peeling paint inside near a roof penetration. Pipe boots and vent collars shrink and crack in Southern California sun after eight to twelve years. The rubber collar will look fine from below, but the seal has failed. This is the most common unnoticed leak source we find on otherwise healthy roofs in Anaheim and Orange.
See the difference
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After
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AfterReplacement Cost & What’s Included
Here’s the honest range for Orange County. A standard pipe collar replacement runs $350 to $500 installed. A chimney flashing replacement, which includes removing and replacing the base and counterflashing plus new sealant, runs $600 to $950. Sidewall step flashing replacement runs $450 to $800 depending on the wall length and whether we need to remove and reset siding. Skylight flashing lands between $500 and $850. These numbers include the flashing itself, removal of the failed piece, preparation of the surrounding decking, proper install with sealant where required, and full cleanup. What moves the price is access: steep pitches, tile roofs that require lifting and resetting tile courses, and multi-story homes all add labor time. You get the line-item price in writing before any work starts. The number on that paper does not move at the door. Every flashing replacement we do is backed by the 365-Day Done Right Promise: if it leaks or fails within one year, we come back and fix it at no charge. In writing.
DIY or Call Us?
You can safely do the inspection that tells you what’s wrong, and it costs you nothing but a careful look. Walk around with binoculars and check for lifted flashing edges, visible rust, and sealant that’s pulled away from brick or stucco. Look inside for stains on ceilings or drywall near penetrations. What you should not do is take a caulk gun up a ladder and try to reseal chimney flashing or replace a pipe boot yourself. It’s not just the height. If you seal the wrong joint, you trap water behind the flashing instead of diverting it away, and the leak gets worse while looking like a fix. If you’re on a two-story home near the coast, the salt air has made your flashing edges sharper than they look. We do this work with fall protection and the right sealants for Orange County conditions. If you’ve spotted a symptom on this list, call (559) 258-5703 and we’ll get a technician out to look at it. The estimate is free.
FAQs
Galvanized Tamko step flashing lasts 15 to 25 years in most of Orange County, but coastal homes within a mile or two of the ocean often see 10 to 12 years before rust compromises the metal. Aluminum flashing lasts longer in coastal air but costs more up front. Sun exposure isn’t the main killer here; salt and moisture cycling are. If your roof is 15 years old and the flashing is original, it’s usually time to budget for replacement. Call (559) 258-5703 and we’ll tell you what your flashing actually looks like from the roof.
Small sealant failures can sometimes be patched, but patching is temporary by nature. Once flashing metal is rusted, lifted, or structurally compromised, caulk won’t fix it. We’ll tell you plainly which situation you have. If it’s patchable, we’ll say so and it’ll be the cheaper option. If it’s going to leak through the next rain season, we’ll tell you that too. Call (559) 258-5703 for an honest look.
Most single-penetration flashing replacements take two to four hours on site. Chimney and skylight flashing jobs usually take a half day, sometimes a full day if tile courses need resetting. We give you a time window before we start, and the price is set before the first shingle comes up. Call (559) 258-5703 to schedule a free estimate.
Yes. Our trucks carry standard Tamko-compatible step flashing, pipe collars, valley metal, and counterflashing profiles in galvanized and aluminum. For nonstandard profiles or Tamko MetalWorks steel components, we source them through our supplier network, usually within a day or two. The benefit of stocking the common pieces is speed: we can often quote, repair, and finish in one visit. Call (559) 258-5703 and a live person will answer.
If you’ve got a Tamko roof with flashing that’s leaking, rusting, or lifting, call us at (559) 258-5703 to schedule a free estimate. Travis Oakley and the crew at Brennan Roofing Co Orange County have been replacing failed flashing on Orange County roofs long enough to know what’s worth patching and what’s not. A roof shouldn’t be something you think about. If it’s done right, you won’t.
Written by Travis Oakley, Owner, Brennan Roofing Co Orange County at Brennan Roofing Co Orange County, serving Orange County and nearby areas.