Roofing Closed Cut Valley

It is popular because the two roof planes do not need to be shingled at the same time.

Roofing closed cut valley.

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 the roofer will install the shingles onto the roof deck and extend the asphalt shingles through the area where opposing roof planes meet so that the shingles cover or close the valley area. Once covered the contractor moves to the side with a higher slope. 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.

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. Shingling both a closed cut valley and a long island valley is the same for the first half of the process. One layer of shingles actually crosses the valley beneath the other. I place the shingle so that one edge is 2 ft.

Working on the smaller roof plane i set a shingle on the first course line. 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. Away from the valley center at the nail line. Tools you will need for roofing from amazon bostitch coil nailer https amzn to 2u1v8e2 shingle remover https amzn to 2fzu5wf roof snake https amzn to 2.

For a closed valley shingles are installed across the joint where planes intersect. 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. From the ground it looks as though the shingles meet in a clean line in the center of the valley. If you are looking to install shingles you might want to consider the closed cut valley method.

With each new course roofing shingles continue up the valley. Shingles are cut on the higher slope in a straight line through the valley. 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.