Valleys are a prime leak area so it s important to be careful.
How to shingle a valley roof.
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.
Step 6 shingle valley.
The open woven and closed cut methods are demonstrated.
Extend the 3 tab shingles on one of the roof s planes past the valley at least 12 inches.
From this starter shingle continue moving up the valley roof.
Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
The next shingle should be directly atop the first one.
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.
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.
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.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.