How To Fix Roof Flashing Leak

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

How to fix roof flashing leak.

Have your helper stay inside the house waiting for the drip to appear. First roughen the area around the hole with a wire brush or sandpaper and then clean it. First snip the new flashing with your shearers then bend it to a 90 degree angle. Cut the self adhesive patching material to the desired.

Adhere it using your flashing cement. Recaulk the corner flashing if any areas have hardened caulk. Apply a generous amount of roofing cement behind the flashing. 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.

Remove the roofing nails with the prybar as the flashing is being removed. For metal roof flashing that is corroded and needs to be replaced you will need to remove it from the shingles. Clean any leaves or other debris out of the gap between the flashing and chimney. Replace any missing or rotted siding above the step flashing on dormers.

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. Pry up the edges of the flashing with a small prybar carefully so you do not damage the shingles or underlying sheathing. Use masonry nails or screws to reattach the flashing tight against the chimney.

Vent flashing is damage near or on the vents of your roof. Use a chisel to remove any hardened roofing cement. Step 3 remove metal roof flashing. Small holes or corroded spots in flashing can be easily repaired.

Allow the primer to dry if instructed to do so by the packaging. If you see damage to joints previously sealed. Start low soaking the area just above where the leak appears in the house. Then slide it up the roof preferably on top of the damaged flashing.

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.