Use a chisel to remove any hardened roofing cement.
How to fix roof leak around chimney.
How to repair roof flashing.
Inspect the flashing at the top sides and bottom edge of the chimney.
How to fix a leaky roof by a chimney.
Apply a generous amount of roofing cement behind the flashing.
First roughen the area around the hole with a wire brush or sandpaper and then clean it.
To repair chimney flashing leaks.
Extend the ladder up so the top rung is at least 3 feet above the edge of.
If portions are missing or bent.
Position an extension ladder securely against the edge of the roof.
Small holes or corroded spots in flashing can be easily repaired.
If none is found the leak must be confined to the mortar joints bricks or mud cap.
Starting at the front and then working the sides and finally the back section run water around the chimney while the observer keeps watching for a leak.
Chimney roof leaks are usually caused by gaps or cracks between the metal flashing used to join the chimney to the roof and the chimney.
Inspect the flashing for gaps or cracks.