Proper Way To Shingle A Roof Valley

Place the nails along the edge of the valley metal not into it.

Proper way to shingle a roof valley.

Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally. How to shingle a roof 90 pics pro tips recommendations step 1. In addition it is important to avoid nailing the shingles through the valley metal. From the stepped off main part of the roof run shingles into the valley and cut them square from where the bottom corner intersects with the shingles nailed along the valley line.

As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. Remove existing roof and underlayment. Each flashing should overlap the one below by at least 75 mm 3 but not be visible below the shingle top lap. Only nail at the edges with only enough nails to.

Butt a full shingle up against the cut shingle and nail into place. One nail goes into the top section of the shingle where it covers the valley metal. Laminated shingles let you start in the valley and work outward which can be an advantage in some situations. To secure the roof valley flashing nail it down carefully.

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. There are two simple rules to follow. Imbed each step flashing in a 75 mm 3 wide application of asphaltic plastic cement and nail in place. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

When shingling a roof with three tab shingles it s easiest to shingle the roof planes first working toward the valley. The original plan was to preserve a portion of the existing roof since. All valleys start the same. This picture gives you an idea of the condition of the existing roof plywood and you.

Ensure ice and water protector has been installed along the valley first.