Proper Way To Shingle A Roof Valley

All valleys start the same.

Proper way to shingle a roof valley.

The original plan was to preserve a portion of the existing roof since. Ensure ice and water protector has been installed along the valley first. Then starting at the base of the. Butt a full shingle up against the cut shingle and nail into place.

When shingling a roof with three tab shingles it s easiest to shingle the roof planes first working toward the valley. To secure the roof valley flashing nail it down carefully. In addition it is important to avoid nailing the shingles through the valley metal. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

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. Only nail at the edges with only enough nails to. There are two simple rules to follow. Each flashing should overlap the one below by at least 75 mm 3 but not be visible below the shingle top lap.

Place the nails along the edge of the valley metal not into it. Imbed each step flashing in a 75 mm 3 wide application of asphaltic plastic cement and nail in 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 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. Remove existing roof and underlayment. Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

How to shingle a roof 90 pics pro tips recommendations step 1.