Roof Shingles On Valleys

Measure the width of the sheet metal valley flashing.

Roof shingles on valleys.

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. 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. Then starting at the base of the. The open woven and closed cut methods are demonstrated.

Place a roofing nail in each corner and one in the center on its appropriate side. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. Position an extension ladder against the lower edge of the roof near the valley that is repaired. Starting at the bottom edge of the valley begin laying down the shingles.

For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane. Press the shingle into the valley and make sure that it is flat against the surface of the roof. 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.

Ensure ice and water protector has been installed along the valley first. Typical valley flashing is 14 inches wide. Cut the tabs off of one shingle and lay it on the bottom edge with a 1 4 inch overhang. One layer of shingles actually crosses the valley beneath the other.

In addition it is important to avoid nailing the shingles through the valley metal. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. Valleys are a prime leak area so it s important to be careful.