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Tamko Flashing Replacement: The Pasadena Owner’s Guide
Tamko flashing replacement in Pasadena typically runs $380 – $750 installed for most residential repairs, depending on location on the roof, the flashing width needed, and whether the surrounding shingles need to be lifted or re-seated. Our crews stock Tamko-compatible flashing on the truck, so most Pasadena homes are back to water-tight the same day. You’ll have the price in writing before we touch a single shingle.
Here’s how most people find us. A damp patch appears on the ceiling after a winter rain, or a stain starts crawling down an interior wall near the chimney. Maybe your gutter run is fine but the fascia board behind it is darkening. You go up with a flashlight (or you don’t, and you call someone) and eventually the culprit is a piece of metal flashing that has corroded through, pulled loose, or was never installed correctly in the first place. In Pasadena, our dry summers and sudden wet winters are hard on flashing. The metal expands, contracts, and eventually gives up.
Key takeaways:
- We install Tamko-compatible flashing and carry common sizes on the truck.
- Most Pasadena flashing replacements are completed in one visit.
- Written price before work begins, every time.
- Work is covered by the 365-Day Done Right Promise.
Which Tamko Models This Applies To
Tamko’s flashing product lines fit across their shingle families, which matters in Pasadena because so many homes here wear Heritage, Heritage Proline, Elite Glass-Seal, or the older laminated series. The flashing profiles don’t change dramatically between those lines; what changes is the width of the metal and the profile of the step flashing lip that tucks under the shingle course. Most Pasadena homes with Tamko shingles use standard 4-inch, 5-inch, or 6-inch step flashing, and the color-matched face on Tamko’s metal is a coated stock that holds its finish longer than bare galvanized.
Here’s the gotcha we see often: a homeowner replaces a few shingles with a different brand, and the new shingle’s butt depth doesn’t line up with the old Tamko step flashing. Water finds the gap. If you don’t know which Tamko series you have, check the roof access area for a leftover bundle wrapper or ask us during the inspection walk; we’ll identify it from the shingle dimensions and granule pattern. Birchbark Roofing Pasadena is an independent service provider, not affiliated with Tamko, and we work with Tamko materials alongside GAF, Owens Corning, and CertainTeed.
For the metal itself, OEM Tamko flashing is good product. But there are quality aftermarket equivalents, made in the same gauge and with a polyester-coated finish, that match the color and cost 15 – 20% less. We’ll price both honestly and let you choose. What we won’t do is install the thin, hardware-store roll flashing that crinkles under a shingle and fails in two years. That’s a false economy, and Pasadena’s sun bakes it brittle fast.
Styles & brands we work with






Signs Your Tamko Flashing Replacement Is Failing
- Water stains on ceilings or walls near roof intersections. Flashing failures almost always present as interior staining at chimneys, walls, valleys, or vent pipes. The roof field itself may look fine; the metal seam is the leak point.
- Visible rust, pinholes, or flaking metal at the flashing face. Pasadena’s dry heat and coastal-influenced moisture cycles accelerate galvanic corrosion. Once the coating fails and rust pits through, water follows the pinhole.
- Flashing pulling away from the wall or chimney. The sealant between flashing and masonry fails long before the metal does in many Pasadena homes. Caulk shrinks in heat, cracks, and lets wind-driven rain behind the flashing.
- Granule loss concentrated around the flashing edges. Water running off the flashing lip scours the granules from adjacent shingles. Look for dark, bald patches alongside the metal. That abrasion is a tell-tale sign of water flowing in the wrong place.
- Curled or lifted shingle corners near the flashing. Heat works the shingle away from the flashing over time. The gap creates a channel for water to slip under and travel horizontally, sometimes far from the visible damage.
Replacement Cost & What’s Included
Most Tamko flashing replacements in Pasadena fall between $380 and $750 installed, with the range driven by how much flashing is being replaced, whether we need to lift surrounding shingles to access the seam, and whether the underlayment below the flashing is salvageable. A simple chimney counter-flashing replacement on a one-story Pasadena ranch runs toward the low end. A valley flashing replacement with shingle rework on a two-story home with a steep pitch runs toward the high end. The number on your estimate is the number you pay. No change orders unless we both agree in writing first.
Every estimate includes the flashing material (either OEM Tamko or quality aftermarket, your choice), the sealant, the labor, and the disposal of any removed material. We also include a written description of exactly what we’ll do and where. Workmanship is covered by our 365-Day Done Right Promise: if the flashing isn’t right, we make it right. That promise applies to every repair we perform, including replacements that require roof access near the edge of the work.
See the difference
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After
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After
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AfterDIY or Call Us?
What you can safely do yourself is observe. Walk the perimeter with binoculars and look at the flashing condition from the ground. Look inside the attic after a rain with a flashlight. Note where the stains start and stop. Write everything down and share it with us when you call.
What we don’t recommend is ladder work on a two-story Pasadena roofline, lifting shingles to inspect a seam, or attempting to re-seal flashing with a caulk gun. Most roof falls in California happen to homeowners working alone without a harness or a spotter, and roofs with tile or steep pitches are worse. Flashing replacement also needs to integrate correctly with underlayment, or the leak just moves six inches to the left. Erik Lindgren has spent close to three decades diagnosing leak patterns across Pasadena, including a long stretch of older craftsman homes near Bungalow Heaven that taught him what a century-old roof deck actually needs before new metal goes down. Call (626) 657-5397 for a free estimate, and we’ll walk it with you.
FAQs
Tamko flashing in Pasadena typically lasts 15 – 25 years, but homes in the foothills with full western exposure often see faster coating breakdown from the afternoon sun, so a 12 – 15 year lifespan is realistic for those exposures. Call (626) 657-5397 for an exact quote on your roof’s current state.
Small areas of failed sealant can sometimes be re-sealed as a temporary fix, but pinhole rust, lifted metal, or separated seams need replacement, because a patch over moving metal eventually re-leaks. We’ll tell you honestly which path your flashing actually needs, and you’ll see the price in writing either way.
Most single-flashing replacements in Pasadena take 2 – 4 hours from setup to clean-up, and we carry common Tamko-compatible flashing sizes on the truck, so we usually don’t need a second trip. Call (626) 657-5397 to schedule, and we’ll account for your family’s schedule before we start.
We stock common Tamko-compatible step and counter flashing sizes in neutral and matched colors on our trucks, and we can source OEM Tamko flashing from our local supplier within one business day for less common colors or widths. Estimates are free.
Get Your Flashing Replaced Right in Pasadena
When you call Birchbark Roofing Pasadena, a live person answers. No phone tree, no callback list. We’ll schedule a walk-through, check the flashing, and hand you a written price in dollars before any work begins. The crew arrives in uniform, with background checks on file, and we use shoe covers and drop cloths inside your home on every visit. We’ll send you a photo of the completed clean-up before we leave. If your dog needs to stay inside, we coordinate the door schedule with you, and we use pet-safe products where there’s a choice. Call (626) 657-5397 today to schedule your free, no-pressure estimate.
Written by Erik Lindgren, Owner, Birchbark Roofing Pasadena at Birchbark Roofing Pasadena, serving Pasadena and nearby areas.