Only nail at the edges with only enough nails to.
Shingle roof valley installation.
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.
Some roofers cut the shingles parallel to the flashing s center ridge.
Snipping off the corners of.
How to do it determine cuts.
Others start with a 3 inch wide.
Then starting at the base of the.
The open woven and closed cut methods are demonstrated.
Ensure ice and water protector has been installed along the valley first.