Proper Way To Shingle A Roof Valley

Laminated shingles let you start in the valley and work outward which can be an advantage in some situations.

Proper way to shingle a roof valley.

Ensure ice and water protector has been installed along the valley first. There are two simple rules to follow. The original plan was to preserve a portion of the existing roof since. 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. Each flashing should overlap the one below by at least 75 mm 3 but not be visible below the shingle top lap. This picture gives you an idea of the condition of the existing roof plywood and you. Only nail at the edges with only enough nails to.

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. 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.

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. Then starting at the base of the. Use 4 nails per shingle and 6 nails on the prevailing windward sides of the roof as wind resistance nailing.

Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally. In addition it is important to avoid nailing the shingles through the valley metal. To secure the roof valley flashing nail it down carefully. All valleys start the same.

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