Chimney Flashing Repair in Seattle: A Real Story (2026)

What Does Chimney Flashing Repair Cost in Seattle in 2026?

Chimney flashing repair in Seattle costs between $350 and $950 in 2026, depending on the extent of the failure, flashing material, and chimney size. Based on 214 flashing jobs our team completed across the Seattle metro area last year, the average homeowner pays $580 for a full re-flash using lead-coated copper on a standard single-story roofline. Step flashing replacements on two-story homes in neighborhoods like Ballard and Queen Anne typically run $750–$950 due to steeper pitches and longer seam lengths. Minor resealing jobs — where the flashing itself is sound but the caulk has cracked — start at $350. Current as of July 2026.

How Marcus T. in Ballard Discovered His Flashing Had Failed

Marcus T. noticed a dark water stain spreading across the ceiling of his upstairs bedroom last February — right after a week of heavy rain. He assumed it was a roof leak and called a roofer first. The roofer found nothing wrong with the shingles and suggested he check the chimney. A quick Google search for "chimney flashing repair Seattle" brought him to our scheduling page.

Ryan arrived the next morning. From the ground, he could already see the problem: a gap had opened between the step flashing and the brick at the rear corner of the chimney — a classic sign of flashing that had shifted over the winter freeze-thaw cycle common in Seattle.

"That rear corner gap is where we see 70% of our Ballard water calls. The flashing slides when the mortar holding the counter-flashing cracks, and once water gets behind it, it travels six feet before it ever shows up on your ceiling."

— Ryan, Lead Technician, Seattle Chimney Pros

Ryan found the original flashing was galvanized steel — likely from the late 1990s — and had corroded at three of the five step joints. The counter-flashing embedded in the mortar had also pulled loose on the uphill side. Full replacement with lead-coated copper flashing took about four hours. Marcus paid $680, which included new counter-flashing and a waterproofing sealant application on the surrounding brick.

"I was expecting a much bigger number," Marcus told us. "The roofer had me convinced my whole roof needed work. Turns out it was just the flashing."

What Are the Signs Your Chimney Flashing Is Failing?

Failing flashing usually shows up in your home before it's visible from the roof. Watch for these warning signs:

• Water stains on ceilings or walls near the chimney — especially after heavy rain
• Rust streaks running down the exterior brick from the roofline
• Peeling paint or bubbling drywall on the interior chimney wall
• Visible gaps, cracks, or lifted edges where the flashing meets the brick
• Soft or spongy wood in the attic near the chimney chase
• Musty odor in rooms adjacent to the chimney during wet months

In our experience across 900+ Seattle-area homes inspected last year, approximately 38% of chimneys on homes built before 2000 showed at least minor flashing wear. Homes in Ballard, Fremont, and Greenwood — where many craftsmen date to the 1940s–1960s — have the highest rate of galvanized flashing failure we see in the field.

What Types of Chimney Flashing Does Seattle Chimney Pros Install?

The right flashing material matters for Seattle's wet climate. Here's what we use and when:

We recommend lead-coated copper for most Seattle homes. Yes, it costs more upfront — but at 40-50 years of service life, it's the last flashing job most homeowners will ever need. Our chimney flashing repair service always includes a written material warranty.

How Long Does Chimney Flashing Repair Take in Seattle?

Most flashing repairs take 3–6 hours for a single technician. Here's a typical timeline for a full re-flash:

1. Inspection and material assessment (30 min): We confirm the scope from the roof — how many step joints, whether counter-flashing is salvageable, and if the underlying roof deck shows water damage.
2. Removal of old flashing (45–60 min): Old step and counter-flashing is carefully removed without disturbing surrounding shingles.
3. Mortar joint prep (30 min): Counter-flashing reglets (slots in the brick) are cleaned out and re-cut if needed to accept new flashing.
4. Installation of new base and step flashing (60–90 min): New flashing is woven into the shingle courses and sealed at every seam.
5. Counter-flashing and cap flashing (45 min): Embedded in mortar joints and sealed with elastomeric caulk rated for PNW temperatures.
6. Final inspection and cleanup (20 min): We photograph the completed work and walk you through what was done.

We also offer chimney waterproofing as an add-on — sealing the surrounding masonry while we're already on the roof costs significantly less than a separate trip.

Does Homeowner's Insurance Cover Chimney Flashing Repair in Washington?

It depends on the cause. Washington homeowner's insurance typically covers flashing damage caused by a sudden, accidental event — like a storm-driven tree branch or wind damage. It generally does NOT cover gradual deterioration, corrosion, or maintenance neglect, which accounts for the majority of flashing failures we see.

If you believe your flashing failed due to a storm event, document it: take dated photos, note the storm date, and request a written assessment from us. We regularly provide documentation for insurance claims. For more guidance, read our article on chimney damage insurance claims in Washington.

We serve Ballard and the surrounding areas — see our Ballard chimney services page for local scheduling and same-week availability.

Ready to Fix Your Chimney Flashing Before Fall Rains Hit?

July is the best month to schedule flashing repair in Seattle — dry weather means faster curing times for sealants and mortar, and you'll beat the September rush when everyone suddenly notices their chimney leaked all winter. Our CSIA-certified team serves all 45 Seattle-area neighborhoods with same-week scheduling available most weeks. Call us at (253) 429-8006 or request a free estimate online.