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.

How to fix roof valley.

I have my valley custom made with water trough to help with leaking b. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. 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. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.

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. 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. Check the entire roof valley carefully to locate the source of these problems. Clear any debris in the roof valley and surrounding area.

The top joinery of both valleys when they meet on the same plane of roof is shown here. Insert the bar under a shingle and pry upward at a. Step 2 remove the shingles. Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar.

In order to lay the flashing the shingles on the roof will have to be removed. The right thing to do here is to pull a valley basically pull a valley apart and rebuild it. And you can tar it but it s a real stop gap band aid like measure. As you install roof shingles on the second roof plane you allow them to lap over the valley on top of the first shingles.