
Flashing, Chimney & Skylight Repair in Seattle
Seattle homes take a beating at every roof penetration. Flashing, Chimney & Skylight Repair in Seattle is the work that keeps water out of the seams where chimneys, skylights, valleys and wall transitions meet the metal. On the steep hills between Puget Sound and Lake Washington, under tall Douglas firs and western red cedars, those seams face months of steady rain and atmospheric-river storms every year. A failed chimney counter-flashing on a Ballard Craftsman or a cracked skylight curb on a Laurelhurst Tudor will find a way inside before you see a stain on the ceiling. We fabricate flashing in-house and bend it to fit the actual roof, not a generic profile. Call (425) 648-6332 to get a free estimate, or read about our metal roof leak repair process if water is already coming through.
Why Flashing Repair Is the Number One Leak Point on Seattle Roofs
Seattle does not get one dramatic storm season. It gets long gray damp winters, steady rain, and atmospheric-river events that push water sideways for days. That pattern tests every seam and every penetration on a roof, and flashing is where most failures start. Moss and algae colonize the shaded north slopes, debris packs into valleys, and the constant wet-dry cycle works on sealant and fasteners around chimneys and skylights.
- Chimney counter-flashing pulls away from masonry as the house settles and the metal expands, opening a path for water behind the brick.
- Skylight curbs on 1990s and 2000s infill homes crack at the sealant joint and let water track under the pane frame.
- Valley flashing on steep Queen Anne and Magnolia roofs collects needles and leaf litter that hold moisture against the metal.
- Wall and sidewall transitions on deep-porch Craftsman bungalows in Wallingford and Ravenna fail where the original step flashing was never replaced.
- Pacific windstorms topple big trees and drop limbs that dent or tear flashing, which then leaks quietly for months.
We see these failures across Seattle and the Eastside, and most of them are repairable before they rot the sheathing. Roofing permits and inspection thresholds vary by jurisdiction, so check with the Seattle Department of Construction and Inspections or your local building department before any structural change: Seattle Department of Construction and Inspections.
Key info: On a 1920s foursquare in Mount Baker, the chimney flashing had been sealed with tar three times over 20 years. We removed the tar, cut new counter-flashing into the mortar joint, and the leak stopped for good. Sealant is a patch. Bent metal is a repair.
How We Repair Flashing, Chimneys and Skylights on Seattle Metal Roofs
We start by finding the actual entry point, not the stain on the ceiling. On a metal roof, water can travel a long way along a pan before it drops, so we inspect the full penetration, the panel laps, and the fasteners around it. Then we fabricate the flashing to match the roof profile and the masonry or curb it meets.
- We inspect the roof, attic and interior ceiling to trace the leak to its source.
- We remove failed sealant, old tar patches and damaged flashing without tearing up sound panels.
- We measure and bend new flashing in-house for a precise fit to the chimney, curb or wall.
- We cut counter-flashing into mortar joints or install new curb flashing with proper laps and fasteners.
- We seal with metal-compatible sealant and test the repair with water before we close up.
- We document the work with photos for your records or an insurance claim file.
If the leak has spread into the panels or fasteners, we may recommend a full metal roof inspection to catch related problems before the next storm.
Key info: A West Seattle homeowner called us after a skylight leak stained a bedroom ceiling. The curb flashing had separated from the frame by a quarter inch. We bent a new curb cap, reset the flashing, and the repair held through the next atmospheric river without a drop inside.
Repair Approaches We Use on Seattle Chimneys, Skylights and Valleys
Not every flashing problem needs the same fix. The right approach depends on the roof material, the penetration type, and how much damage the leak has already done. Here is how we match the method to the job.
| Approach | Description | Best for |
|---|---|---|
| Custom bent counter-flashing | New metal flashing cut into the mortar joint and lapped over the roof panel. | Masonry chimneys on Craftsman and Tudor homes. |
| Skylight curb re-flash | Remove the old curb flashing, rebuild the seal, and install a new bent cap. | Cracked or separated skylight curbs on any metal roof. |
| Valley flashing replacement | Open the valley, replace the metal, and re-lap the panels on both sides. | Valleys clogged with fir needles and leaf litter. |
| Step and sidewall flashing | Rebuild the step flashing where a roof meets a wall or dormer. | Wall transitions on bungalows and additions. |
| Emergency leak control | Temporary seal and water diversion until a permanent repair can be scheduled. | Active leaks during a storm or before a forecasted blow. |
We choose the least invasive method that solves the problem, and we tell you when a patch will not last.
Flashing, Chimney & Skylight Repair Cost in Seattle: What to Expect
Most flashing repairs start at $600 and go up from there. The price depends on the penetration type, how much damage the leak has done, and how hard the area is to reach. A simple skylight re-flash on a walkable ranch roof in Shoreline sits near the low end. A chimney re-flash on a steep Queen Anne Victorian with a slate-look metal roof and limited ladder access moves toward the high end.
- Access matters: steep pitch, height, and tight side yards slow the work and add labor.
- Material matters: copper and specialty metal flashing cost more than painted steel.
- Damage matters: rotted sheathing or framing under the flashing adds repair time.
- Scope matters: one penetration versus a full valley plus two skylights is a different job.
Get two or three estimates and compare scope, not just the number. A low bid that skips the sheathing check is not a bargain. See our full pricing overview for more detail, or call (425) 648-6332 for a free estimate.
What to Look for When Hiring a Metal Roofing Contractor Near Me in Seattle
Flashing work is detail work, and not every roofer does it well. Ask questions before you sign anything, and do not be shy about asking for proof. A contractor who does this work every day will have clear answers.
- Confirm the contractor is licensed and insured in Washington, and ask for a certificate of insurance.
- Get at least two or three written estimates that list the flashing scope and materials.
- Ask for references from jobs similar to yours, especially chimney and skylight work.
- Ask who pulls the permit if one is required, and confirm it with the local building department.
- Check HOA or historic district design rules if your home is in a protected area.
We are a Metal Roofing Alliance member and have been in business since 2009. Reach out through our contact page to schedule your free estimate.
Flashing, Chimney & Skylight Repair in Seattle: Pricing Guide
| Service | Price | Details |
|---|---|---|
| Skylight flashing repair | Starting at $600 | Covers one skylight curb re-flash with new bent cap and sealant; steep pitch or high access adds labor. |
| Chimney flashing repair | Starting at $850 | Includes cutting new counter-flashing into the mortar joint and lapping over the panel; masonry condition affects price. |
| Valley or sidewall flashing | Starting at $900 | Opens the valley or wall transition, replaces metal, and re-laps panels; rotted sheathing adds repair time. |
| Complex or multi-penetration job | On estimate | Multiple chimneys, skylights or valleys need an on-site look to scope labor, access and material. |
| Travel | Included | In Seattle and surrounding areas, no separate call-out or mileage fee. |
| Estimate | Free | Response within 24h at (425) 648-6332, no obligation to book. |
Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (425) 648-6332.