Woven Closed Valley Roof

All of the shingle rows will need to be lined up correctly.

Woven closed valley roof. Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction. Certainteed recommends closed valley for their lifetime landmarks and 25yr xt lines. One of the details that varies between homes is the method of flashing the valley areas of the roof. Woven valleys should only be used with strip shingles.

Pros of woven valley shingle installations. Closed valleys or open valleys. The three basic valley types for asphalt shingle roof systems are woven open and closed cut. There are 4 main kinds of valley installation methods to explore for your roof.

Before you decide how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. According to long time iko sales representative jeff tessaro closed valleys for residential construction have been popular since he was a roofing contractor in the late 90 s. With each new course roofing shingles continue up the valley. There is a variation on the closed cut referred to as a california valley.

Alternatives for the closed cut valley installation are the woven metal open cut and long island installation. Here are diagrams of each style valley style. In addition there are recognized options for open and closed cut valleys commonly referred to as california open valleys and california closed cut valleys open valley. There are two common methods for completing the flashing of a valley in a shingle roof system.

Here we have a laminated shingle roof that has been installed with a woven valley detail. The shingles act as the valley lining and protect the surface from water runoff. A woven valley shingle installation is one where the shingles from both sides of the roof valley extend over the valley and weave together overlapping courses alternately. Shingles are first installed on the side of the valley with a lower slope.

This might lead to annoying leaks in heavy rains or at the very least a damaged roof underlayment. Essentially there are three main ways to shingle a roof valley. There are various techniques you ll need to know for each type of installation which will be explained in this blog. Shingles are overlapped across the valley on alternative slopes.

These disadvantages are neutralized by their simplicity of installation. To understand what makes a valley either closed or open it is important to understand how a valley is constructed. It is always a good idea to check with the manufacturer or a certified installer of the product such as ourselves. There are three common valley details.

In this video we explore the california cut woven closed cut and open metal. Further they wear out faster than a metal valley. For a closed valley shingles are installed across the joint where planes intersect. Woven closed cut and open.

We don t normally offer this line although it is available.