They can also be some of the most difficult leaks to track down and repair.
Shingle roof valley leak repair.
Insert the bar under a shingle and pry upward at a.
A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof.
Start at the upper row of shingles at the upper end of the valley.
This is one type of leak where experience can give a big advantage in locating and fixing the problem.
Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar.
Leaking valleys are some of the most common type of roofing leaks a home can have.
The sealants and roof pitch used can crack and chip away over time.
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.
A roof valley can be formed when two opposing sloped roof planes meet.
Use two roofing nails per shingle.
This repair process is also the same for composition and tile roofs.
If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly.
And damaged flashing is behind most roof leaks.
In order to lay the flashing the shingles on the roof will have to be removed.