To secure the roof valley flashing nail it down carefully.
How to shingle a roof valley.
Step 1 snap chalk line.
Then starting at the base of the.
Step 4 determine shingle lines.
Step 3 apply mineral roofing felt.
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.
This flashing must be about 18.
Ensure ice and water protector has been installed along the valley first.
Before you begin laying down the shingles it must be protected with a metal flashing.
When shingling a roof with three tab shingles it s easiest to shingle the roof planes first working toward the valley.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.
All valleys start the same.
One layer of shingles actually crosses the valley beneath the other.
How to shingle a valley roof.
Laminated shingles let you start in the valley and work outward which can be an advantage in some situations.
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.
Step 5 install.
Valleys are a prime leak area so it s important to be careful.
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.
Step 2 install metal flashing.