Leaking chimney flashing on older brick chimneys
Why it happens here
Brick chimneys expand and contract with temperature changes, and the original lead or galvanized flashing eventually cracks at the bends. Once cracked, water runs straight down the chimney into the attic.
Our approach
We rebuild the counter flashing with copper or new galvanized steel, cut a proper reglet into the brick, and seal it with polyurethane. Then we water-test it to confirm the fix before we leave.