Valley Pitched Roof

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.

Valley pitched roof.

Part 3 of the four part guide to roof construction covers pitched roof detail. Part 1 a guide to roof construction covers an overview of flat and pitched roofs. A central upstand will prevent this from happening. Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs.

It is important to get the roof construction correct at the valleys. When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. This recommendation includes iko s premium shingles. Iko recommends that you install architectural shingles with the open valley method for the best roof performance.

To get the most out of it is helpful to also read parts 1 and 2. With open valleys there is a risk that water from the steeper roof slope will run across and run over the edges of the valley on the lesser pitch slope. If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. On a related note the pitch properly the slope of a hip or valley rafter will not be the same as the pitch of the adjacent roof sections.

While the slope of the common rafters are expressed as x in 12 the slope of the hip and valley rafter on the same roof will be x in 16 97 so where two roof sections intersect to form a 90 angle a regular hip or valley and each roof. 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.