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