Roof Shingles On Valleys

Shingles from the other side are run through the valley center line and cut along a line parallel to and 4 cm from the center line.

Roof shingles on valleys.

Start at the upper row of shingles at the upper end of the. 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. Cut the tabs off of one shingle and lay it on the bottom edge with a 1 4 inch overhang. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.

The open woven and closed cut methods are demonstrated. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane. One layer of shingles actually crosses the valley beneath the other.

Place a roofing nail in each corner and one in the center on its appropriate side. In addition it is important to avoid nailing the shingles through the valley metal. Only nail at the edges with only enough nails to. Press the shingle into the valley and make sure that it is flat against the surface of the roof.

Valleys are a prime leak area so it s important to be careful. To secure the roof valley flashing nail it down carefully. Typical valley flashing is 14 inches wide. Measure the width of the sheet metal valley flashing.

Ensure ice and water protector has been installed along the valley first. 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. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.