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Chimney Crown Rebuild in Maple Valley, WA
Poured, sloped crowns for Maple Valley's lakefront and acreage brick chimneys. Starting at $299, free quote.
- Serving Maple Valley & King County
- Free 2nd-opinion quotes
- Price match + 10–25% discount
Free Chimney Crown Rebuild Quote in Maple Valley
We'll confirm a time by phone or text.
The crown is the concrete cap on top of a brick chimney, and in Maple Valley the chimneys that have one are mostly the older ones: the lakefront houses and converted cabins around Lake Wilderness, Pipe Lake and Lake Lucerne, the acreage homes along the Cedar River and the Maple Valley-Black Diamond Road. Those crowns were typically troweled flat from mortar with no overhang, and after decades of foothill rain and shade they crack, grow moss and shed pieces. If your house is in Four Corners, Wilderness Village or the Summit and the chimney is wrapped in siding, you have a chase cover instead, and the fix is a chase cover replacement starting at $299.
A rebuild means removing the failed crown down to sound brick, forming a new one and pouring it in crown mix, sloped to shed water away from the flue with a drip edge past the brick face. Crown rebuilds start at $299. We give a free quote with photos, a free second opinion on any bid you already have, and we match any written price and take 10-25% off. Maple Valley is about 25 minutes from our Renton office up SR 169. We schedule pours around dry weather. If you are not happy, we are not done.
Symptoms
Signs Maple Valley homeowners notice
- Pieces of concrete or mortar missing from the top edge of the chimney
- Cracks wide enough to see daylight or fit a coin into
- The crown is flat or dished in the middle so water pools on it
- No overhang: the slab ends flush with the brick faces
- The top two or three courses of brick are spalling or loose
- A previous crown sealant is peeling off and the cracks underneath have reopened
Maple Valley Conditions
Why this happens in Maple Valley
A crown on a Lake Wilderness chimney is under water for most of the year. Sea-Tac's 1991-2020 normals put 40.34 inches of rain on the region annually, with about 29.65 inches, roughly 73%, falling October through March, and the fir and cedar canopy over most lakefront and Cedar River lots keeps the chimney top in shade through that whole stretch. A flat mortar crown holds a film of water instead of shedding it, and Western Washington moss, which spreads fastest October through April on shaded, slow-drying surfaces, roots in the cracks and keeps them wet.
Then the freezing starts. December, January and February lows average 37-38F, and about 60 days a year touch freezing, so the saturated crown freezes at night and thaws by afternoon repeatedly through the winter. The Brick Industry Association documents that saturated masonry under repeated freeze-thaw cracks and disintegrates, and the crown, the flattest and most exposed masonry on the house, goes first. A sloped crown with a drip edge dries within hours of a storm and gives moss nothing to hold.
How It Works
Our chimney crown rebuild process
Remove the failed crown
We break out the old slab or mortar wash down to solid brick, protecting the flue opening so debris does not fall into the chimney.
Repair the top courses
Any loose or spalled brick in the top courses is reset or replaced so the new crown sits on sound masonry.
Form with overhang and slope
We build a form that projects past the brick faces on all sides and slopes the surface away from the flue so water runs off instead of sitting.
Pour and finish
The crown is poured in a single placement with a bond break around the flue tile so heat expansion does not crack it, and a drip edge is formed on the underside of the overhang.
Cure and seal
Once cured, we apply a breathable water repellent and, where useful, a flexible sealant at the flue joint. A new cap goes on if the old one is damaged.
Full details, options and pricing factors on the main Chimney Crown Rebuild page.
Need chimney crown rebuild in Maple Valley?
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Chimney Crown Rebuild in Maple Valley — FAQ
The crown on my Lake Wilderness chimney is cracked and mossy. Seal it or rebuild it?
If the cracks are hairline and the crown still has its full thickness, a flexible crown coating after we clear the moss can work, and we will say so. If pieces are missing, the edges have crumbled, or the top brick courses are loose, it needs a rebuild starting at $299. The free quote comes with photos so you can see which case you have.
What time of year can you rebuild a crown in Maple Valley?
Late spring through early fall is best; July at 0.60 inches is the driest month and the crown cures cleanly. We can pour during a dry stretch in winter and cover the work, and if a cracked crown is leaking now we can do a temporary seal first. Maple Valley is 25 minutes from Renton, so we move fast when the forecast opens.
How soon can you do chimney crown rebuild in Maple Valley?
We confirm a time by phone or text after you request a quote; same-day service is often available for urgent problems in Maple Valley and the rest of King County.
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