Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem.
Shingle roof valley leak repair.
Use two roofing nails per shingle.
In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing.
A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof.
Leaking valleys are some of the most common type of roofing leaks a home can have.
This repair process is also the same for composition and tile roofs.
Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar.
In order to lay the flashing the shingles on the roof will have to be removed.
A roof valley can be formed when two opposing sloped roof planes meet.
They can also be some of the most difficult leaks to track down and repair.
Insert the bar under a shingle and pry upward at a.
The sealants and roof pitch used can crack and chip away over time.
And damaged flashing is behind most roof leaks.
This is one type of leak where experience can give a big advantage in locating and fixing the problem.
Start at the upper row of shingles at the upper end of the valley.
These instructions should now allow you to repair a leaking roof valley on a roof with woven shingles.