Closed Cut Valley Roof

In general the closed cut valley method implies stretching one side of the shingles beyond the valley while those on the other side are trimmed.

Closed cut valley roof.

What is a closed valley roof. I m in a mixed humid climate zone 4a. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. Roof is 5 12 slope with a couple of valleys.

One variant of the closed cut valley is the california valley also called long island valley and new jersey valley. For a closed valley shingles are installed across the joint where planes intersect. According to long time iko sales representative jeff tessaro closed valleys for residential construction have been popular since he was a roofing contractor in the late 90 s. I m trying to decide on the best way to do the valleys open metal valleys or closed cut ones.

A chalk line is then used to strike a line from the top of the valley to the bottom of the valley. For this method the last shingles on the cut side of a cut valley are actually installed sideways so they run up and down the valley. With a closed cut valley there s no need to shingle the two roof planes at the same time. With each new course roofing shingles continue up the valley.

Closed cut valley even if i work toward the valley with three tab shingles cut valleys are faster than woven valleys hands down. A variation of closed cut valley. If you like exposed metal especially if you use copper you may want to pick open. Then rather than cutting the shingles on the high volume roof plane a row of shingles is installed with the exposure edge facing the valley center.

It installs and looks almost the same as a regular cut valley where the shingles on the low volume roof plane are installed first and pass through the center of the valley by at least 12 in. If you prefer a concealed valley lining and want your roof to blend together choose the closed valley. I begin the second side. When it comes to aesthetics that is all up to preference.

Can t afford standing seam metal though so it will be mid grade architectural asphalt shingles installed with meticulous detail. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. I want my roof to be as leak proof and long lasting as possible.