Delridge, King County
Sealing a Delridge chimney against water runs $320 to $795. The range follows the surface: a short single-flue stack above a low roof is quick, a tall stack with several faces exposed, or one that needs its crown sealed as well, takes longer and more product. We use a vapor-permeable repellent, the kind that keeps liquid water out of the brick while letting the moisture already inside escape as vapor. A coating that traps water in the masonry does more harm than no coating at all.
Typical investment
$320–$795
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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 Delridge home — we'll point you to the right fix.
What we do
The same crew, the same written quote — for Delridge homes.
Level 1 examination of everything reachable, with a Level 2 camera pass when the reachable parts leave a question open
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Full-height brushing of the flue with a head sized to its shape and material
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Assessment of the stack from roofline to crown, with a photo of each defect
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Camera survey and measurement of the existing flue before anything is ordered
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Measurement of each flue tile, or of the whole crown for a multi-flue cap
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Burner, pilot assembly and firebox cleaned; logs or media put back in the layout the manual shows
Learn moreRanges shown for orientation — the exact figure is written up on-site, after the inspection.
We treat repellent as a finishing coat. Applied over damaged masonry it accomplishes little: open joints, a cracked crown or a gap at the flashing let water in faster than any repellent can keep it out. So we look at the stack before we quote, and if repair has to come first we say so and price it separately. On a sound chimney, the treatment slows the soaking that the long Seattle wet season brings and gives the brick a better chance of drying between storms.
WeatherSpark's figures for Seattle make January the cloudiest month, with the sky mostly cloudy or overcast about 71 percent of the time. Short, dim days dry a wet chimney slowly. The landslide study points to the same month from another direction: 45 percent of the slides it could date happened in January, deep in the wet season.
Masonry follows the ground's calendar. By midwinter a brick stack on a damp valley lot has absorbed water for months with little sun to drive it back out. A breathable repellent applied the previous summer reduces how much rain the face takes in during those months while letting trapped vapor leave, which is the balance a chimney in Delridge needs.
Every chimney waterproofing we do in Delridge includes:
Smoke coming back into the room, or a smell that won't go? Book the inspection first.
Book nowTiming is the practical problem in this neighborhood. The product needs dry brick to soak in, and the valley floor along Longfellow Creek is not a place where masonry dries quickly. We book the work for a stretch of dry days, usually late spring through early fall, and if the forecast turns we move the date rather than spray onto wet brick. A treatment applied to damp masonry seals in the moisture it was meant to keep out.
Joints, crown and flashing are checked; anything open is repaired before any repellent goes on.
We schedule into a run of dry days so the product can penetrate instead of sitting on wet surface.
Moss and loose material come off, then the repellent is applied to every exposed face until the brick takes no more.
A porous crown is sealed as well, since it is the surface that takes rain most directly, and the finished stack is photographed.
The historical society's Delridge history notes that home ownership in the valley ran high in the 1950s and fell later as the share of renters grew. Today's Census mix for the valley's ZIP area is varied: about 53 percent of units are detached single-family houses and a further 13 percent attached ones, the townhouse type.
Maintenance follows ownership. A rental house can go years without anyone climbing up to look at the chimney, and on attached homes the stack or chase may be shared between neighbors. For landlords and for shared walls we put the condition of each face in writing, with photos, so the people who pay for the work can see what they are paying for.
What this work is quoted at for Delridge homes — the exact figure comes from the $99 on-site inspection, credited toward the work.
| Service | Price in Delridge | What that covers |
|---|---|---|
| Chimney Waterproofing | $320–$795 | Breathable sealer — reapplied every 3–5 years in this climate |
| Chimney Sweep | $189–$449 | 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 $425 | Masonry repair — brick and mortar, scoped after diagnosis |
Ranges are what these jobs are quoted at in Delridge. 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.
Delridge is a valley neighborhood between the two ridges of West Seattle, on Longfellow Creek, with homes of mixed ages, about a fifth of those in its ZIP code area from the 1940s and 1950s and nearly a third built since 2000. We work every part of it — Pigeon Point, Youngstown, Cottage Grove, Puget Ridge, Riverview included.
DelridgeKing County, WA · 47.547, -122.362
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.
Several years on a sound chimney, depending on exposure. We note the date on your invoice, and a water test at a later inspection shows when it is time again.
The repellent we use is clear and does not leave a gloss. Expect a faint deepening of color for roughly a day as it cures.
Then the repair is quoted on its own. Our $99-plus-tax inspection settles that question, and the amount is deducted from work you approve.
A $99 on-site inspection, a written quote before any work, and photos of every item we touch.
