Open Vs Closed Valley 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.

Open vs closed valley roof.

There are two methods for sealing valleys. If you have a shingled roof as most torontonians with a sloped roof tend to have then you will have one of two kinds of valleys on your home. Furthermore the description of the roofing company whose closed valley failed seemed to fit the profile of a fly by night roofing company and so i d have to assume that workmanship and expertise was secondary to making a quick buck. The closed variation is a flashing that has been completely covered with shingles while in the open variation will have the flashing completely exposed to the elements.

A closed valley is where the tiles or shingles are butted up against each other in the center of the valley. Valleys are created where two roof slopes meet. Open valleys and closed valleys. Because of the sheer amount of water being navigated through this section your valleys need to be properly sealed.

For a closed valley shingles are installed across the joint where planes intersect. In comparison to a closed valley an open valley adds another layer of lining into the valley. Find out the differences before you talk to a roofing expert. Moving on here are a couple of things to think about when deciding open or closed.

An open valley has a gap usually about 6 inches between the tile or shingles at the valley area.