How Shingle A Roof Valley

This flashing must be about 18.

How shingle a roof valley.

A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. 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. All valleys start the same. When shingling a roof with three tab shingles it s easiest to shingle the roof planes first working toward the valley.

Laminated shingles let you start in the valley and work outward which can be an advantage in some situations. Shingle the other side of the valley the same way. Step 1 snap chalk line. From the side you are currently working on place shingles over the valley making sure they extend at least 12 on the other side.

Roof one side of the valley running the shingles across it. Before you begin laying down the shingles it must be protected with a metal flashing. 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. Step 4 determine shingle lines.

Step 5 install. Only nail at the edges with only enough nails to. If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof. Then starting at the base of the.

Ensure ice and water protector has been installed along the valley first. Step 2 install metal flashing. For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane. Step 3 apply mineral roofing felt.

If you have a valley to shingle make sure you started your shingles away from the valley working toward the valley on the lower side of the valley only. 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. As on the other shingles use 4 roofing nails on each shingle. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.