Cracked Chimney Crown: A Hidden Source of Water Entry

The crown is a thin layer of cement that seals the top of the chimney to the flue. It is poured with a slope so water will roll off instead of just sitting.  Because it is thin, it tends to crack over time. A cracked or deteriorated chimney crown can allow water inside the chimney.  It often goes unnoticed for a long period of time simply because we generally never get to see the top of our chimney.  The freeze/thaw cycles here in Dayton Ohio contribute to broken and spalling bricks. Left unchecked water can eventually make its way into the framing of the home and create mold and rot framing members.  

We often find damaged crowns during our real estate inspections. If there are minor cracks and chips the repair is typically just using a high quality caulk to seal things up. If the damage is more extensive then a brick mason can chip off the old crown and pour a new one. Costs range widely depending mostly on how difficult it is to reach the crown. Typically, you are looking at $500.00 or more for this repair. Interested in learning more, just reach out!