How To Fix Roof Valley

Clear any debris in the roof valley and surrounding area.

How to fix roof valley.

In summary during the installation of a closed cut valley you install the first roof plane s shingles into the valley. And you can tar it but it s a real stop gap band aid like measure. 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. 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. I have my valley custom made with water trough to help with leaking b. Step 2 remove the shingles. The top joinery of both valleys when they meet on the same plane of roof is shown here.

Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar. 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. As you install roof shingles on the second roof plane you allow them to lap over the valley on top of the first shingles. The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.

In order to lay the flashing the shingles on the roof will have to be removed. 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. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.