Patching Chimney Flashing

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

Patching chimney flashing.

Any such leaks can be quite frustrating to diagnose. Apply a generous amount of roofing cement behind the flashing. 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 repair your flashing with flashseal you first need to clean the area of any dirt and debris to allow the product to work as efficiently as possible. 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. It is attached to one side of the chimney and one side on the roof. After the clean area dries apply a thin base coat of flashseal that covers the entire flashing area and extends a few inches above the flashing line.

Chimney flashing can allow roof leaks in the transition area between the chimney and the roofing materials. Materials required 26 gauge galvanized sheet steel for prefabricated pieces drive in expanding anchors galvanized coil stock galvanized front base flashing galvanized step flashing polyurethane caulk self adhering roofing membrane ice and water barrier. The only way to repair flashing is to replace it. Clean any leaves or other debris out of the gap between the flashing and chimney.

Use masonry nails or screws to reattach the flashing tight against the chimney. Give us a call at 301 530 4262.