The chimney crown is the masonry or concrete top designed to shed water away from the chimney structure and flue penetrations. Cracks, poor slope, deterioration, or failed transitions can allow moisture into the masonry. ATL Chimney evaluates whether a crown needs targeted repair, sealing, or rebuilding based on its condition.
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A cracked or deteriorated crown can be one water-entry point, but stains around a chimney can also come from flashing, the cap, mortar joints, or absorbent masonry. Crown repair should be recommended when inspection findings point to the crown rather than treating every leak as a crown problem.
See chimney leak repairInspect the crown and measure crack depth and slope
Seal suitable minor crown cracks with a compatible crown repair material
Rebuild severely cracked crowns with proper concrete and slope
Add a flexible expansion joint around the flue tile
Finish and protect the repaired crown as appropriate for the material and condition
Surface repair and rebuilding are different scopes. Compare the documented condition and the water-shedding details before choosing between estimates.
Ask which findings support repairing the existing crown and which would require removing and rebuilding it. The condition of the underlying material, crack depth, drainage, and flue transitions matter; a coating should not be presented as a way to restore loose or unsound material.
The estimate should explain the crown work and any separate repairs to nearby brick, flue tiles, caps, or flashing. Ask how the completed crown will shed water and how transitions around the flues will be handled. Crown repair does not automatically include every part of the chimney top.
Chimney size, roof access, removal of the old crown, and the amount of rebuilding affect the price. Ask how weather and material curing requirements affect the schedule, protection of the work, and when the fireplace can be used again.
See chimney crown repair conditions and completed work from ATL Chimney projects.
Masonry chimney top with two caps and roofline flashing.
Project notes and before-and-after photos from our field work.
An Atlanta homeowner reported water entering her home. On the roof, we found that the chimney had no crown covering the masonry around the flues and identified this as the source of water entry. We repaired the chimney top by adding the missing crown.
The before photo shows a cap over one flue while the surrounding chimney top remains open. It illustrates the difference between a flue cap and a crown: they cover different parts of the chimney.
A chimney crown is exposed directly to rain, sun, and temperature changes. Cracks, poor drainage, or separation around flue tiles can allow water into the masonry, so crown repair should address the actual condition, slope, overhang, and transitions rather than simply coating visible cracks.
Call ATL Chimney or send an online service request. We will document relevant findings, explain the recommended scope, and provide pricing before approved repair work begins.