Roofing Shingles How To Install Valleys

I overlap the inside corner of the drip edge at the valley to minimize sharp edges that could cut into the wsu over time.

Roofing shingles how to install valleys.

Closed valleys are completed during shingle installation. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. For better results try to use full size shingles going into a closed valley one without metal flashing as this can eliminate nailing too close to the centerline. For longer roof performance iko strongly recommends open metal valleys.

Ensure ice and water protector has been installed along the valley first. These strips go under the drip edge. With underlayment and flashing installed apply shingles up to one side of the flashing. As with any asphalt shingling job i install a 9 in.

Complete the application of underlayment and valley flashing before the roofing shingles are applied. 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. 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. Where possible install three tab shingles so that the tabs falling over metal valleys or rake edges at the side of the house are at least four inches wide.

Do not drive nails into the flashing. Then starting at the base of the. Only nail at the edges with only enough nails to. The open woven and closed cut methods are demonstrated.

To secure the roof valley flashing nail it down carefully.