Shingle Roof Valley Installation

Before the installation of a shingle roof assembly the roofing contractor installs an underlayment over the entire roof deck.

Shingle roof valley installation.

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

For longer roof performance iko strongly recommends open metal valleys. The recommended flashing material is a 28 gauge galvanized metal or an equivalent corrosion resistant non. 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. 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.

Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. What is a closed valley roof. Complete the application of underlayment and valley flashing before the roofing shingles are applied. In this video i show you how i do the valleys on a shingle roof.

This video demonstrates the proper installation technique for installing roofing valleys. Most metal shingles will be attached to the roof using metal shingle clips but metal roofing shingle installation can be system specific. Steep slope roofs. Best practices for sealing the metal roof valley vary based on the slope of the roof.

Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty. Many roofers cut the shingles across because they say it s safer. No one of this affirmat. 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.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Closed valleys are completed during shingle installation. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Stop nailing 6 inches from the center.