Shingle Roof Valley Detail

A roof valley is formed where two roof slopes meet.

Shingle roof valley detail.

Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks. Water collects in a valley to flow off the roof. And your family can remain in the home during the installation or repair. We can even help you find a professional to install it.

Everything can be done at a distance. One of the details that varies between homes is the method of flashing the valley areas of the roof. 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. Essentially there are three main ways to shingle a roof valley.

Thanks to digital technology all of your decisions and interactions from selecting the right roofer to choosing a shingle to paying the contractor can be done at a distance. 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. Closed valley s or open valleys. Extend the end of each shingle at least 12 inches beyond the valley centerline and avoid placing any butt joints near the valley center.

On the first course across the valley the shingle from the larger or steeper roof plane overlaps the shingle from the smaller or shallower plane. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. Experience the total owens corning roofing system and high quality roofing shingles. To understand what makes a valley either closed or open it is important to understand how a valley is constructed.

This video demonstrates the proper installation technique for installing roofing valleys. The first thing to know about your roofing project. Woven closed cut and open. The iko roofing residential cad details below are complete drawings that can easily be downloaded customized for your residential or commercial project and included in your cad library for future use.

The open woven and closed cut methods are demonstrated. There are two common methods for completing the flashing of a valley in a shingle roof system. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.