Leaking chimney flashing on masonry chimneys
Why it happens here
Many South Altadena homes have original masonry chimneys. The flashing was installed decades ago and has corroded or pulled away from the mortar. Water gets behind it and runs down the chimney.
Our approach
We remove the old flashing, cut a new reglet into the mortar, and install new copper or galvanized counter flashing. We seal it with butyl tape and polyurethane sealant for a watertight repair.