Fix Leaky Roof Around Chimney

First roughen the area around the hole with a wire brush or sandpaper and then clean it.

Fix leaky roof around chimney. Use masonry nails or screws to reattach the flashing tight against the chimney. Inspect the flashing for gaps or cracks. Water test the roof at the area of the chimney using a garden hose. Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.

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. To repair chimney flashing leaks. Apply roof cement to any gaps or cracks. In this case of a roof leaking from around a chimney or fireplace the problem is often the flashing needs to be removed and replaced.

Apply a generous amount of roofing cement behind the flashing. Clean any leaves or other debris out of the gap between the flashing and chimney. Use a chisel to remove any hardened roofing cement. 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.

Small holes or corroded spots in flashing can be easily repaired. To repair loose roof chimney flashing.