Renton, King County
Where brick rises through shingles, thin metal has to close the joint. That metal is the flashing, and in Renton fixing it costs $330 to $1,500. The $330 job is a reseal: the upper metal strip has slipped from its mortar slot and gets pushed back, pinned and caulked. At $1,500 every piece comes off, new step and counter-flashing are bent to the roof pitch, and the uphill side gets a proper diverter. Which one you need is decided with a hose and a flashlight, not a guess.
Typical investment
$330–$1,500
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Book your $99 inspection
$99 plus tax, deducted when you approve the repair
Not sure where to start
Pick what you're seeing at your Renton home — we'll point you to the right fix.
What we do
The same crew, the same written quote — for Renton homes.
Level 1 review of the accessible parts, stepped up to a Level 2 camera pass when those parts cannot settle the question
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The flue brushed along its full height with heads chosen for its shape and material
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An assessment in photos that tells weathering apart from structural failure
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Video scan and measurement of the flue before a liner is specified
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Each flue measured, or the whole crown when one cap will cover several flues
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Burner, pilot assembly and igniter cleaned and tested
Learn moreRanges shown for orientation — the exact figure is written up on-site, after the inspection.
Storms in Renton arrive from a consistent quarter. WeatherSpark's wind record has the south as the prevailing direction for nearly ten months. The gustier stretch it identifies, October 17 to April 22, sits almost exactly on top of the rainy one. The chimney face that looks south takes wind-driven water straight into the flashing laps. On that side we find the lifted corners and the dried-out sealant.
A Renton house from the 1950s, and the American Community Survey counts 3,074 housing units from that decade in the city, has in all likelihood been re-roofed more than once. HistoryLink's history of the Highlands recalls how quickly some of the earliest of these neighborhoods were built: federal war-worker housing began there in May 1942.
Each re-roof is a chance to renew the chimney flashing, and each is also a chance to skip it. Roofers in a hurry tuck new shingles against the old metal and run a bead of tar. Layers of patching on a mid-century stack are the pattern we expect to find, and usually the reason a reseal alone will not hold.
Every chimney flashing repair we do in Renton includes:
Smoke coming back into the room, or a smell that won't go? Book the inspection first.
Book nowA flashing leak rarely drips at the fireplace. Water gets under the metal, runs along the roof deck and shows up as a stain a few feet away, sometimes in a closet. Because Renton's hazard plan notes a significant snow or ice event every few years, we also look for the damage that sliding snow and ice dams do: bent counter-flashing and mortar grooves cracked open.
A controlled hose test, starting low and moving up, shows the exact lap where water gets in.
Old sealant, tar and failed metal are removed so the brick and shingles underneath can be judged.
Step pieces go under each shingle course; counter-flashing is let into the mortar joint above and sealed.
Before the ladder comes down, water goes back on the new metal for a second hose run.
What this work is quoted at for Renton homes — the exact figure comes from the $99 on-site inspection, credited toward the work.
| Service | Price in Renton | What that covers |
|---|---|---|
| Chimney Flashing Repair | $330–$1,500 | Reseal at the low end, full flashing replacement at the high |
| Chimney Sweep | $189–$459 | Full flue swept, Level 1 inspection included |
| Chimney Inspection | $99 plus tax | Level 1 visual; Level 2 adds a full camera scan |
| Chimney Relining | From $1,900 | Full-length stainless liner, sized to the appliance |
| Chimney Repair | From $375 | Masonry repair — brick and mortar, scoped after diagnosis |
Ranges are what these jobs are quoted at in Renton. The exact figure is set on site after a $99 inspection (credited toward the job if you go ahead), and you approve it before any work starts.
Renton's building permit FAQ files re-roofs under its quick counter permits, the kind you can apply for on the city's online self-service portal. On a single-family home the trigger it names is replacement of the sheathing. Flashing-only work does not replace sheathing, but rotten deck boards found beside a long-leaking chimney can change the scope, and we tell you if we find them.
One more item for roofs with copper flashing. Zinc sulfate moss treatments and copper do not mix: zinc eats copper, and OSU's Extension service says to keep such products off any roof whose flashing, gutters or downspouts are made of it. If your roof gets treated for moss, tell the applicator what the chimney flashing is made of.
Renton is a city of 24 square miles at the south end of Lake Washington, incorporated in 1901, on Lake Washington, with homes with a median build year of 1988, more than a third of them built from the 1940s through the 1970s. We work every part of it — the Highlands, Kennydale, Benson Hill, Talbot Hill, Earlington, North Renton included.
RentonKing County, WA · 47.483, -122.217
Before and after
Illustrations of what each repair changes on a typical chimney — not photos of a specific job.
Before
After
Before
After
Before
After
Four steps, each one on paper — so you always know what happens next.
Choose a genuine opening on the crew's calendar. Confirmation is immediate.
Liner, crown, cap, flashing and masonry examined in order — each finding photographed.
One document, plain numbers, covering only the work your chimney genuinely needs.
The repair is completed, then handed over with before-and-after photos of every item.
$330 to $1,500 on our price list. Homeyou's modeled estimate for resealing cracks and replacing flashing at the roofline, published for neighboring cities, is $300 to $400; that is a southeast King County market reference from a third party and not our quote.
Coordinate the two. Fresh shingles butted against tired metal tend to leak within a year or so. Also worth knowing: once sheathing is being replaced on a single-family house, the city wants a re-roof permit pulled, normally by the roofer.
Through the on-site inspection, $99 plus tax. We test, photograph and quote, and the $99 comes off the bill if you have us do the repair.
A $99 on-site inspection, a written quote before any work, and photos of every item we touch.
