California Valley Roofing Style

Critical points to remember valley underlayment and flashing combined with valley construction comprise one of the most critical details of an asphalt shingle roof system.

California valley roofing style.

Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. Make sure the valley metal is straight before nailing it. For this method the last shingles on the cut side of a cut valley are actually installed sideways so they run up and down the valley. With each new course roofing shingles continue up the valley.

Key points in all valley details are the. 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. Here are diagrams of each style valley style. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.

With shingles bedded in cement it can be exported to other states. One variant of the closed cut valley is the california valley also called long island valley and new jersey valley. These reasons and the aesthet ics of the california style valley should be explained to consumers. Hi all we had our roof redone last month.

The roofing company is saying that this is a california style valley and it was installed property however it looks differently during different times of the day. Here we have a laminated shingle roof that has been installed with a woven valley detail. One company said metal valleys on both sides. With the california cut valley shingles from the smaller roof slope are installed across the valley onto the adjacent slope.

Woven valleys should only be used with strip shingles. It s sometimes called a california cut valley. The house had an addition built in the 1970s kind of a funky roof line on one side of the add on creating a sort of half valley on that side. This is an incorrect installation of this type of roofing material and will be more prone to water intrusion and will void the manufacturer s warranty.

For a closed valley shingles are installed across the joint where planes intersect. There are no trees overhead but we get lots of snow ice and rain northern new england. A california valley is faster than cutting all of the shingles up a valley. I noticed a bulge on the roof.

A valley shingle is then installed parallel to the centerline and offset a couple of inches. Here is eric s method. California cut valleys make for a great closed cut valley however we have an installation trick to improve performance in areas of high winds snow or rain. But it is pretty visible.

It is mostly visible when the sun hits it in the afternoon. A variation of closed cut valley.