Check the flashing beneath the corner trims along.
Repair leaking roof dormer.
Flexible roof sealant apply flexible roof sealant black jack roof patch rubberized roof cement from a can or tube to fill nail holes gaps loose flashing or loose shingles.
3 deteriorated caulk around window and sill.
4 roofing leak above dormer due to age deterioration or poor installation.
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.
2 lack of flashing at top of trim over window.
If you see damage to joints previously sealed with a line of.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
This dormer leak repair has kept the house waterproof ever since and the workmanship has a 10 year warranty.
Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk.
To repair leaks caused by metal flashing around chimneys and dormers simply reseal joints using a caulk gun filled with roofing cement.
Examine the trim and siding around the dormer.
Use a flashlight to ensure the flashing extends.
Flashing shingles replace the flashing and shingles around the dormer.
Look along the edge of the dormer siding where it meets the shingles.
How to fix dormer roof leaks.
Look for signs of rotting or a missing piece of siding.
With layers properly added to repel and divert water the vinyl siding and roof shingles were re installed.
1 improperly installed or deteriorated roof to wall or roof to roof valley flashings at top back of dormer.
Finding the leak 1.
Recaulk the corner flashing if any areas have hardened caulk.
Isolate areas when you run the hose.