How To Repair A Roof Leak Around A Chimney

To repair chimney flashing leaks.

How to repair a roof leak around a chimney.

How to repair roof flashing. 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. Clean any leaves or other debris out of the gap between the flashing and chimney. 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.

Pause at least one minute at each shingle as you move up the roof shingles on that side of the chimney but don t let the water get behind the chimney yet. Inspect the flashing for gaps or cracks. Apply a generous amount of roofing cement behind the flashing. If there is no leak on the front or low side of the chimney move the water one shingle at a time up along the side of the chimney.

Small holes or corroded spots in flashing can be easily repaired. How to fix a roof leak around the chimney chimney cap a new chimney cap may keep water from entering the top of the chimney and help keep critters out flexible roof sealant apply flexible roof sealant black jack roof patch rubberized roof cement from a can or tube to fill holes gaps flashing and loose shingles around the chimney. Use a chisel to remove any hardened roofing cement. First roughen the area around the hole with a wire brush or sandpaper and then clean it.

To do this ask an assistant to observe the area of the ceiling near the chimney and run water along the sealed gaps of the. Use masonry nails or screws to reattach the flashing tight against the chimney.