Roofing Shingles How To Install 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.

Roofing shingles how to install valleys.

How to do it. The open woven and closed cut methods are demonstrated. For longer roof performance iko strongly recommends open metal valleys. 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.

I overlap the inside corner of the drip edge at the valley to minimize sharp edges that could cut into the wsu over time. To secure the roof valley flashing nail it down carefully. Valleys are a prime leak area so it s important to be careful. Complete the application of underlayment and valley flashing before the roofing shingles are applied.

Do not drive nails into the flashing. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. Only nail at the edges with only enough nails to. 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. As with any asphalt shingling job i install a 9 in. Ensure ice and water protector has been installed along the valley first. Then starting at the base of the.

Closed valleys are completed during shingle installation.