Cost to Roof Flashing Repair in Seattle, WA

$192–$1,920 in Seattle

28% above the national average · 1.28x cost multiplier

In Seattle, a roof flashing repair runs $192 to $1,920 on average — about 28% above what homeowners pay nationwide. The West Coast market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.

Cost Breakdown in Seattle

Line Item	Low	Mid	High
Cost per linear ft	$13	$22	$32
Materials	$64	$256	$768
Labor	$192	$512	$2,048
Permits	$0	$0	$0
Total	$256+28% vs. national avg	$768+28% vs. national avg	$2,816+28% vs. national avg

Budget

Reseal existing flashing with roofing sealant, 1-2 problem spots around pipe boots or step flashing joints.

Mid-Range

Replace step or valley flashing on one roof section, including removing shingles, installing new aluminum or galvanized flashing, and re-laying shingles.

Premium

Full chimney flashing replacement or extensive valley work involving copper or lead flashing, step flashing re-integration, and leak remediation.

Material Options

Material prices below are national averages; availability in Seattle may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Aluminum Flashing	$0.50-$1.50 per linear ft	Rust-resistant, lightweight, easy to cut and form, widely available	Can oxidize over time, reacts with certain roofing materials, shorter lifespan than copper	Standard residential repairs on asphalt shingle roofsRust-resistant, lightweight, easy to cut and form, widely available
Galvanized Steel Flashing	$0.75-$2.00 per linear ft	Strong and rigid, good for high-stress areas like valleys, accepts paint well	Zinc coating weathers over time requiring paint, heavier than aluminum, can rust if coating is scratched	Valley flashing and step flashing where rigidity mattersStrong and rigid, good for high-stress areas like valleys, accepts paint well
Copper Flashing	$5-$20 per linear ft	50+ year lifespan, no maintenance required, develops protective patina, the correct spec for slate and tile roofs	Significantly more expensive, requires soldering for watertight seams, should not contact aluminum (galvanic corrosion)	Premium or historic homes, slate and tile roofs, chimney flashing upgrades50+ year lifespan, no maintenance required, develops protective patina, the correct spec for slate and tile roofs
Lead Flashing	$3-$8 per linear ft	Extremely malleable and conformable, excellent longevity, traditional choice for chimneys	Requires skilled installation, health considerations during handling, heavier than aluminum or copper	Chimney flashing on older homes, complex curved surfacesExtremely malleable and conformable, excellent longevity, traditional choice for chimneys
Rubberized Membrane / Sealant	$10-$30 per tube or roll	Good for spot repairs and sealing existing flashing joints, flexible, fast to apply	Not a permanent solution for failed or corroded flashing, UV-sensitive, reapplication needed every 3-7 years	Budget spot repairs, extending the life of existing flashing until full replacementGood for spot repairs and sealing existing flashing joints, flexible, fast to apply

Other Projects in Seattle

Full Kitchen Remodel

Full Bathroom Remodel

Composite Deck Building

Back to national average for Roof Flashing Repair

Seattle Estimate

Typical Range

$192–$1,920

vs. National Average

28% above national

Cost Multiplier

1.28x

Cost Per linear ft

$13–$32

Estimates apply Seattle's 1.28x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →