The open woven and closed cut methods are demonstrated.
How to shingle a valley roof.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.
The next shingle should be directly atop the first one.
In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow.
Each successive shingle should be then placed with a six inch overlap or until the adhesive strip contacts the bottom of the shingle tabs.
Continue until you reach the top edge of the valley roof.
Step 6 shingle valley.
Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
From this starter shingle continue moving up the valley roof.
Valleys are a prime leak area so it s important to be careful.
A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types.
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.