Shingle Roof Valley Detail

To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof.

Shingle roof valley detail.

Essentially there are three main ways to shingle a roof valley. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks. The open woven and closed cut methods are demonstrated. One of the details that varies between homes is the method of flashing the valley areas of the roof.

How to shingle roof valleys gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. I then move the shingle to the uppermost course on the roof plane line up the mark on the shingle with the valley center and again mark the corner. The open woven and closed cut methods are demonstrated. A roof valley is formed where two roof slopes meet.

Valleys are a prime leak area so it s important to be careful. Water collects in a valley to flow off the roof. Extend the end of each shingle at least 12 inches beyond the valley centerline and avoid placing any butt joints near the valley center. On the first course across the valley the shingle from the larger or steeper roof plane overlaps the shingle from the smaller or shallower plane.

This video demonstrates the proper installation technique for installing roofing valleys. Videos are intended for u s users only unless otherwise noted. Closed valley s or open valleys.