Cracked crowns and water leaks
Why it happens here
Adelphia gets repeated freeze-thaw cycles in winter. Water gets into small cracks in the crown, freezes, and expands. Over a few seasons, the crown cracks wide open and water runs into the flue. This is the most common cause of chimney leaks here.
Our approach
We replace cracked crowns with a new crown mix that is sloped to shed water. We also check the flashing and apply water repellent to the brick. This combination stops leaks and prevents future damage.