Roof Valley Construction Details

Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.

Roof valley construction details.

It is therefore worth asking the valley manufacturer for guidance on this. There are various techniques you ll need to know for each type of installation which we ll go over in detail. In many cases with purchased house plans the details of the roof construction including rafter design are included. Part 3 of the four part guide to roof construction covers pitched roof detail.

Closed valleys or open valleys. This article discusses details and specifications for roof valley flashing for best construction roof leak resistance. Part 1 a guide to roof construction covers an overview of flat and pitched roofs. Another common design in the northeast is the saltbox which is a gable roof with one longer side.

One of the details that varies between homes is the method of flashing the valley areas of the roof. 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. To get the most out of it is helpful to also read parts 1 and 2. Preformed grp valleys in many ways the roof construction for a pre formed grp valley is the same as that for a lead lined valley.

Woven closed cut and open. These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular. To understand what makes a valley either closed or open it is important to understand how a valley is constructed. There are two common methods for completing the flashing of a valley in a shingle roof system.

Essentially there are three main ways to shingle a roof valley. We describe how to construct three common styles of roof valley.