Roofing Closed Cut Valley

With each new course roofing shingles continue up the valley.

Roofing closed cut valley.

If you are looking to install shingles you might want to consider the closed cut valley method. From the ground it looks as though the shingles meet in a clean line in the center of the valley. 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. One layer of shingles actually crosses the valley beneath the other.

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. Once covered the contractor moves to the side with a higher slope. It is popular because the two roof planes do not need to be shingled at the same time. Working on the smaller roof plane i set a shingle on the first course line.

Shingling both a closed cut valley and a long island valley is the same for the first half of the process. Away from the valley center at the nail line. Shingles from the other side are run through the valley center line and cut along a line parallel to and 4 cm from the center line. For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane.

Closed cut valleys also called closed valleys are installed quickly and have a cleaner sharper look than woven valleys. Shingles are cut on the higher slope in a straight line through the valley. California cut valleys make for a great closed cut valley however we have an installation trick to improve performance in areas of high winds snow or rain. 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. For a closed valley shingles are installed across the joint where planes intersect. Shingles are first installed on the side of the valley with a lower slope.