How To Fix Roof Flashing Leak

Use masonry nails or screws to reattach the flashing tight against the chimney.

How to fix roof flashing leak. Allow the primer to dry if instructed to do so by the packaging. Clean any leaves or other debris out of the gap between the flashing and chimney. Pry up the edges of the flashing with a small prybar carefully so you do not damage the shingles or underlying sheathing. First roughen the area around the hole with a wire brush or sandpaper and then clean it.

Apply a generous amount of roofing cement behind the flashing. Small holes or corroded spots in flashing can be easily repaired. Then slide it up the roof preferably on top of the damaged flashing. To repair leaks caused by metal flashing around chimneys and dormers simply reseal joints using a caulk gun filled with roofing cement.

Vent flashing is damage near or on the vents of your roof. Recaulk the corner flashing if any areas have hardened caulk. Remove the roofing nails with the prybar as the flashing is being removed. Start low soaking the area just above where the leak appears in the house.

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 new flashing shingles replace flashing and shingles around the chimney creating a good new water barrier. Liberally apply a coat of primer to the damaged area as well as the surrounding material. Step 3 remove metal roof flashing. Isolate areas when you run the hose.

Adhere it using your flashing 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. First snip the new flashing with your shearers then bend it to a 90 degree angle. If you see damage to joints previously sealed.

Clean the area around the damage to remove any debris. For example soak the downhill side of a chimney first then each side then the top on both sides. Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk. Replace any missing or rotted siding above the step flashing on dormers.

Use a chisel to remove any hardened roofing cement.