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Chimney Crown Rebuild in Tukwila, WA
New reinforced, overhanging crowns for Tukwila's mid-century brick chimneys, 10 minutes from our Renton office. Starting at $299.
- Serving Tukwila & King County
- Free 2nd-opinion quotes
- Price match + 10–25% discount
Free Chimney Crown Rebuild Quote in Tukwila
We'll confirm a time by phone or text.
The crown closes the top of a brick chimney, and on Tukwila's 1940s-60s chimneys it was typically a thin mortar wash troweled flush with the brick. With no overhang, rain runs down the chimney face instead of dripping clear, and a wash that thin cracks in the first few hard freezes. After sixty or seventy winters the crowns we see on Tukwila Hill, in Riverton and along the older streets of Allentown and Foster are cracked into plates, and the top courses beneath them have loosened because water has been soaking the joints for decades. A failed crown is the single most common reason a Tukwila chimney leaks, and it is the most cost-effective part of the chimney to fix properly.
We remove the old crown, reset or replace any loose top courses, and pour a new reinforced crown that is thick at the center, slopes to the edges, overhangs the brick with a drip kerf, and has an expansion gap around the flue tile. A crown rebuild starts at $299, the quote is free, and we price match plus 10-25% off any written bid. Tukwila is about 10 minutes from our North Renton office, so we can look the same day and book the pour for the next dry window.
Symptoms
Signs Tukwila 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
Tukwila Conditions
Why this happens in Tukwila
A flat crown in Tukwila takes everything the Sea-Tac station a few miles west records: 40.34 inches of rain a year, about 29.65 inches of it between October and March, when the crown almost never dries. Winter lows average 37.1 degrees in December and 37.7 in January and February, so roughly 60 nights a year freeze the water sitting in the crown's cracks while the days thaw it again. The Brick Industry Association's technical notes describe the expansion of freezing water in saturated masonry as the mechanism behind cracking and spalling, and a thin mortar wash has far less resistance than the brick below it. Once one edge breaks away, water has a direct path into the top course and by spring those bricks are loose. Under the big firs on Tukwila Hill the shaded side of the crown also grows moss, which spreads fastest October through April and keeps the cracks wet. A crown with a real overhang and drip kerf changes where that water lands, and the brick below stays visibly drier.
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 Tukwila?
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Chimney Crown Rebuild in Tukwila — FAQ
Does my Tukwila chimney need the crown rebuilt, or can it be patched?
If the crown still overhangs the brick and the cracks are hairline, a flexible crown coating can buy years. If it was poured flush with the brick, is broken into pieces, or the top courses shift when pushed, a rebuild is the fix. We photograph the top during the free quote and show you which case you have. Rebuilds start at $299.
When do you pour crowns in Tukwila?
May through September, when the Sea-Tac normals drop to about an inch a month or less and the brick underneath is dry. The pour itself takes a few hours on one visit, with curing over the following days. Because Tukwila is 10 minutes from our office we can pair the crown with tuckpointing, a cap or a sweep on the same trip.
How soon can you do chimney crown rebuild in Tukwila?
We confirm a time by phone or text after you request a quote; same-day service is often available for urgent problems in Tukwila and the rest of King County.
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