Cracked crowns letting water into the chimney
Why it happens here
Greenwood's freeze-thaw pattern is hard on crown mix. Water sits in a hairline crack, freezes overnight, and widens it until the crown is failing across its whole surface. Homes built before 1960 are especially prone.
Our approach
We chip out the failed crown, rebuild it with a proper slope so water runs off, and seal the edges. We finish with waterproofing so the repair holds through the next few winters.