How To Fix Roof Valley

Check the entire roof valley carefully to locate the source of these problems.

How to fix roof valley.

The right thing to do here is to pull a valley basically pull a valley apart and rebuild it. Clear any debris in the roof valley and surrounding area. 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. It is essential to only use whole not cut shingles during this step.

And you can tar it but it s a real stop gap band aid like measure. In order to lay the flashing the shingles on the roof will have to be removed. I have my valley custom made with water trough to help with leaking b. 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. 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. In summary during the installation of a closed cut valley you install the first roof plane s shingles into the valley. 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.

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