Most Mercer Island chimney calls trace back to water - rain down the flue, stains by the fireplace, a damper rusted stiff, or creosote soaked sour by a leaking cap. We trace the leak to its source, show you what we found on camera, and fix the cause.
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Sweep, cleaning, repair, leak repair, cap repair and liner repair - the full chimney service list for Mercer Island, with the same crew and the same free estimates. Below is chimney in Mercer Island, WA in full — every service, the local conditions and the areas covered.
Sweep & Cleaning
Chimney Sweep
The full professional sweep: rotary brushes scrub the flue from top to bottom while a HEPA vacuum keeps every speck of soot sealed in — the visit that keeps a chimney safe to burn in. In Mercer Island, that includes clearing storm debris and needles the wet season dropped in. Chimney Sweep in Mercer Island, WA runs on one standard: done properly, checked, and shown to you before we leave.
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Sweep & Cleaning
Chimney Cleaning
Creosote, soot and ash removed from the flue, smoke shelf and firebox — the deep clean that kills the campfire smell and the fire risk with it. That local standard is what chimney cleaning in Mercer Island, WA means with Chimney Service Co.
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Repair
Chimney Repair
Any chimney, any problem — leaks, cracks, crumbling brick, bad draw. Water-softened mortar and flaking brick are the repairs we diagnose most around here. Diagnosed on camera first, then repaired properly with the right materials. That local standard is what chimney repair in Mercer Island, WA means with Chimney Service Co.
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Inspection & Care
Chimney Inspection
A full inspection of flue, liner, cap, crown, flashing and firebox — camera inside the flue, with a plain-language report of what is safe, what is not, and what can wait. That local standard is what chimney inspection in Mercer Island, WA means with Chimney Service Co.
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Install & Replace
Chimney Cap Installation
A quality stainless cap keeps rain, birds and sparks where they belong. Fitted to your flue, secured properly, and screened against animals. The screen keeps evergreen needles, cones and nesting birds out, so storm debris stops collecting on the smoke shelf between fires. That is chimney cap installation in Mercer Island, WA, done the way it should be.
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Repair
Chimney Liner Repair
Cracked tiles, gaps at the joints, a liner that is shifting — liner faults found on camera and repaired so hot gases stay inside the Mercer Island flue where they belong. Around King County, older liners often show water staining long before they fail. It is why chimney liner repair in Mercer Island, WA keeps getting recommended to neighbors.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 fireplace specialties. Call (888) 258-0797 and describe it.
A chimney in Mercer Island is not fighting cold so much as water - months of rain, wind-driven storms and masonry that rarely gets a chance to dry out. This is what we actually find here, and what we check on every visit.
Brick and mortar that stay wet for months start to break down: mortar softens, brick faces flake, and the chimney weakens from the outside in. Saturated masonry in King County also holds water against the flue, which rusts dampers and stains fireboxes. Catching it early keeps a repair small.
Moss, algae and ivy love a Northwest chimney, and they are not just untidy - growth holds moisture against the masonry and works roots into softened mortar joints. A chimney that stays green stays wet. We flag growth and the damp damage under it on every inspection in Mercer Island.
Winter storms drop limbs, needles and cones into open flues across Mercer Island, and a blocked flue pushes smoke and carbon monoxide back into the room. Evergreen debris also holds moisture against the flue walls. A sound, screened cap keeps the flue clear through storm season without hurting the draw.
A cold, wet flue is hard to light: the first fire spills smoke until the flue warms and dries enough to draw. In Mercer Island that pattern often points to water in the chimney, a partial blockage, or a cap problem. We diagnose the cause instead of telling you to just burn hotter.
Mercer Island sits in King County, and the ZIP list at the bottom of this page covers 1 serviceable ZIP codes — 98040 through 98040. The closest served neighbors are Beaux Arts Village, Clyde Hill, Hunts Point, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-0797.
Same-day service, free estimates, licensed & insured — and a flue you can see on camera, clean from top to bottom.
Usually moss or algae, and it matters more than it looks. Growth holds moisture against the brick and works into softened mortar joints, keeping the masonry wet and speeding its breakdown. Removing growth without fixing the damp underneath does not last. We check the masonry under the growth and tell you what condition it is really in.
A wet, cold flue draws poorly until it warms, and water in the chimney makes that worse. The cause can also be a partial blockage from storm debris or creosote swollen with moisture. A tech checks the flue, cap and liner on camera in Mercer Island and fixes the cause, rather than treating every smoky startup as normal Northwest weather.
Often, yes, if the frame is sound; a rusted damper that will not seal wastes heat every night whether you burn or not. If the damper is rusted through, replacement is the honest fix. Either way, the rust is a sign water is getting in above it, so we check the cap and crown as part of the same visit.
Very likely. Water entering the chimney soaks soot and creosote, and damp deposits smell musty and sour, stronger in warm weather. The smell is a symptom; the cause is an entry point at the cap, crown or flashing, or saturated masonry wicking moisture in. We find where the water enters and fix that, then clean the flue.
A cap earns its keep here more than almost anywhere. It keeps the bulk of the rain out of the flue, stops storm debris and nesting animals, and slows the rust that constant damp causes inside the chimney. A cap must be sized and screened properly so it never restricts draft - we fit and check them as part of cap repair.
No — and be wary of anyone who does. Every chimney fails differently, so a phone price is a guess that changes at your door. Our estimates are free: a tech looks at the actual problem, then gives you one clear price before any work starts.
Chimney Service Co is a national company with local technicians serving Mercer Island street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of Washington is covered from our Washington page. The Mercer Island list below covers 1 ZIP codes, 98040 through 98040.
Don't see your ZIP? Mercer Island also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-0797 and we will confirm coverage for your street address on the call.
Also serving nearby: Beaux Arts Village, WA · Clyde Hill, WA · Hunts Point, WA · Yarrow Point, WA · Bellevue, WA · Medina, WA.
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