The crown is the concrete slab at the very top of a masonry chimney, and it's the part that takes the most weather and gets the least attention. In Seattle's wet climate a cracked crown is one of the most common — and most fixable — sources of a leaking chimney. Caught early it's a modest repair; ignored, it lets water into the whole structure and turns into a rebuild.
What chimney crown repair costs in Seattle
Crown pricing depends on how far the damage has gone. A seal or patch of hairline cracks with a flexible crown coating runs about $299–$800. A resurface or full crown rebuild, where the old concrete is failing and has to be re-poured with a proper overhang and drip edge, runs $800–$2,500. Access and chimney size move the number; we quote it in writing after we look.
Signs your crown needs work
- Visible cracks across the concrete top, or chunks missing at the edges.
- A damp firebox, or ceiling stains near the chimney after rain.
- Efflorescence — white powder on the brick below the crown, a sign water is getting in.
- Spalling brick just under the crown, where run-off has soaked and frozen.
A crown with no overhang (or a thin mortar wash instead of a real poured crown) will keep failing until it's rebuilt properly.
Why crowns fail fast in Seattle
Our rain and freeze-thaw cycle is brutal on a flat concrete slab that sits exposed all winter. Water pools in hairline cracks, freezes, and widens them a little more each year. Many older Seattle chimneys were finished with a thin mortar wash instead of a properly sloped, reinforced crown — those don't last. A real crown repair fixes the cause, not just the crack.
Fix the crown before it becomes a rebuild
The crown is your chimney's roof. A $299–$800 seal today is far cheaper than the masonry repair — or full rebuild — that follows when water gets past a failed crown into the brick and liner. If you're already seeing efflorescence or spalling, get it looked at before the wet season. Our quotes are free and in writing, with a free second opinion and price-match plus 10–25%.
What Chimney Crown Repair Costs in Seattle (2026)
Real 2026 ranges for the Seattle–Tacoma–Everett area, with a free written quote before any work begins.
| Crown seal / crack patch | $299–$800 |
| Crown resurface / full rebuild | $800–$2,500 |
| Includes proper overhang & drip edge | in the rebuild |
Get a free quote
See our full chimney service pricing, or learn more about Chimney Crown Repair. You get a free written quote before any work begins — call 206-453-2045 or request your free quote online.

