How To Repair A Roof Leak Around A Chimney

Inspect the flashing for gaps or cracks.

How to repair a roof leak around a chimney.

Water test the roof at the area of the chimney using a garden hose. How to repair roof flashing. To repair chimney flashing leaks. Apply a generous amount of roofing cement behind the flashing.

Apply roof cement to any gaps or cracks. 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. 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. 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.

First roughen the area around the hole with a wire brush or sandpaper and then clean it. Use a chisel to remove any hardened roofing cement. Use masonry nails or screws to reattach the flashing tight against the chimney. 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.

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. Small holes or corroded spots in flashing can be easily repaired.