Crown damage from freeze-thaw cycles
Why it happens here
North Lawrence gets repeated freeze-thaw swings from December through March. Water sits in hairline crown cracks, freezes, expands, and widens the crack until the crown fails. Homes with flat or poorly sloped crowns fail first.
Our approach
We rebuild failing crowns with a properly sloped chimney crown mix so water sheds away from the flue. For minor cracks, we seal and monitor. Either way, we check the crown on every visit, not just when you call about a leak.