Using Paper In A Roof Valley

To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them.

Using paper in a roof valley.

Fold over the other side and peel off the paper backing. First clean the debris out of the valley including sawdust nails and whatever else is in there. Roll out and smooth the wsu and drive a few nails on one side to hold it temporarily. Closed cut valleys also called closed valleys are installed.

Lay the felt paper from the top of the roof valley to the eaves at the roof edge. Use a broad strip of felt paper. With a clean valley you can lay down some peel and stick roofing membrane. No matter which valley method you use for extra protection apply wsu at a valley.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Felt paper should extend at least 10 inches up each side of the roof valley so use a strip between 20 and 24 inches wide. Closed cut shingle valley installation. You can center it and align it smoothly with the roof contours as you go down.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. Woven valley shingle installation.