Shingle Roof Valley Installation

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Shingle roof valley installation.

Many roofers cut the shingles across because they say it s safer. This video demonstrates the proper installation technique for installing roofing valleys. Stop nailing 6 inches from the center. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Shingle the other side of the valley the same way. Closed valleys are completed during shingle installation. The following photos illustrate removal and replacement of a closed cut valley with new open metal valley shingles being removed in closed cut valley. All shingles removed from closed cut valley.

For longer roof performance iko strongly recommends open metal valleys. In this video i show you how i do the valleys on a shingle roof. Roof one side of the valley running the shingles across it. 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.

The open woven and closed cut methods are demonstrated. Incorporated into the underlayment may be a self adhering ice and water shield or another type of underlayment that is a heavier gauge than the underlayment that covers the remainder of the. Ice barrier underlayment installed in roof valley. Before the installation of a shingle roof assembly the roofing contractor installs an underlayment over the entire roof deck.

The recommended flashing material is a 28 gauge galvanized metal or an equivalent corrosion resistant non. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow. A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types. What is a closed valley roof.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.