How To Fix Roof Leak Around Chimney

To repair chimney flashing leaks.

How to fix roof leak around chimney.

Apply a generous amount of roofing cement behind the flashing. If none is found the leak must be confined to the mortar joints bricks or mud cap. Inspect the flashing at the top sides and bottom edge of the chimney. 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. How to repair roof flashing. Plug pinholes with roofing cement and patch holes up to about 3 4 inch in diameter with a patch from the same material as the flashing. Cover any exposed nail or screw heads with roofing cement.

If portions are missing or bent. Use a chisel to remove any hardened roofing cement. Use masonry nails or screws to reattach the flashing tight against the chimney. Position an extension ladder securely against the edge of the roof.

Extend the ladder up so the top rung is at least 3 feet above the edge of. Inspect the flashing for gaps or cracks.