Shingle Roof Valley Leak Repair

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.

Some shingles and flashing may need to be removed and replaced but the roof can usually be saved with a good quality repair. 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. In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing.

Use two roofing nails per shingle. A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof. 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.

If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. Replace cracked broken or rotted shingles with the new ones you purchased. Insert the bar under a shingle and pry upward at a. They can also be some of the most difficult leaks to track down and repair.

Start at the upper row of shingles at the upper end of the valley. The sealants and roof pitch used can crack and chip away over time. And damaged flashing is behind most roof leaks.