Using Paper In A Roof Valley

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Using paper in a roof valley.

First clean the debris out of the valley including sawdust nails and whatever else is in there. Closed cut shingle valley installation. Fold over the other side and peel off the paper backing. Closed cut valleys also called closed valleys are installed.

To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them. You can center it and align it smoothly with the roof contours as you go down. Lay the felt paper from the top of the roof valley to the eaves at the roof edge. No matter which valley method you use for extra protection apply wsu at a valley.

Snap chalklines on both sides for guides. Fold the top over the roof ridge and cut the bottom along the drip edge metal. With a clean valley you can lay down some peel and stick roofing membrane. 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.

The three methods to shingle a roof valley. Woven valley shingle installation.