How To Fix Roof Flashing Leak

Adhere it using your flashing cement.

How to fix roof flashing leak.

For metal roof flashing that is corroded and needs to be replaced you will need to remove it from the shingles. Then slide it up the roof preferably on top of the damaged flashing. Step 3 remove metal roof flashing. Clean any leaves or other debris out of the gap between the flashing and chimney.

Have your helper stay inside the house waiting for the drip to appear. Cut the self adhesive patching material to the desired. To repair leaks caused by metal flashing around chimneys and dormers simply reseal joints using a caulk gun filled with roofing cement. Recaulk the corner flashing if any areas have hardened caulk.

Use a chisel to remove any hardened roofing cement. Pry up the edges of the flashing with a small prybar carefully so you do not damage the shingles or underlying sheathing. For example soak the downhill side of a chimney first then each side then the top on both sides. Use masonry nails or screws to reattach the flashing tight against the chimney.

First roughen the area around the hole with a wire brush or sandpaper and then clean it. Small holes or corroded spots in flashing can be easily repaired. Start low soaking the area just above where the leak appears in the house. If you see damage to joints previously sealed.

Isolate areas when you run the hose. Replace any missing or rotted siding above the step flashing on dormers. Clean the area around the damage to remove any debris. Remove the roofing nails with the prybar as the flashing is being removed.

Apply a generous amount of roofing cement behind the flashing. Vent flashing is damage near or on the vents of your roof. 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. First snip the new flashing with your shearers then bend it to a 90 degree angle.

Liberally apply a coat of primer to the damaged area as well as the surrounding material.