Roof Shingles On Valleys

To secure the roof valley flashing nail it down carefully.

Roof shingles on valleys.

Cut the tabs off of one shingle and lay it on the bottom edge with a 1 4 inch overhang. For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane. The open woven and closed cut methods are demonstrated. 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.

Measure the width of the sheet metal valley flashing. One layer of shingles actually crosses the valley beneath the other. Valleys are a prime leak area so it s important to be careful. Place a roofing nail in each corner and one in the center on its appropriate side.

Ensure ice and water protector has been installed along the valley first. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing 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.

Typical valley flashing is 14 inches wide. In addition it is important to avoid nailing the shingles through the valley metal. Start at the upper row of shingles at the upper end of the. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

Only nail at the edges with only enough nails to. Starting at the bottom edge of the valley begin laying down the shingles. Press the shingle into the valley and make sure that it is flat against the surface of the roof.