Roof Shingles On Valleys

Valleys are a prime leak area so it s important to be careful.

Roof shingles on valleys. 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. Ensure ice and water protector has been installed along the valley first. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.

As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. 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. Place a roofing nail in each corner and one in the center on its appropriate side.

The open woven and closed cut methods are demonstrated. One layer of shingles actually crosses the valley beneath the other. 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.

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. Then starting at the base of the. To secure the roof valley flashing nail it down carefully.

For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane. 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. Starting at the bottom edge of the valley begin laying down the shingles.