How To Fix Roof Valley

In order to lay the flashing the shingles on the roof will have to be removed.

How to fix roof valley.

I have my valley custom made with water trough to help with leaking b. In summary during the installation of a closed cut valley you install the first roof plane s shingles into the valley. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. And if they put a second layer of shingles on they brought it up the valley but they didn t replace the valley it s probably leaking and cracking and split.

If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof. Clear any debris in the roof valley and surrounding area. Check the entire roof valley carefully to locate the source of these problems. Step 2 remove the shingles.

Move to the highest end of the valley and work your way down cleaning shingles from both sides of the valley whether they re damaged or not. It is essential to only use whole not cut shingles during this step. Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar. Start at the upper row of shingles at the upper end of the valley.

Insert the bar under a shingle and pry upward at a. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. 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. The top joinery of both valleys when they meet on the same plane of roof is shown here.