Roof Valley Detail

Water collects in a valley to flow off the roof.

Roof valley detail.

A roof valley is formed where two roof slopes meet. 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. It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential. This article discusses details and specifications for roof valley flashing for best construction roof leak resistance.

A common misconception is that the mortar bedding is there to prevent water access. Trussed valley set detail no sheathing continuous 2x4 sp no 2 attached to the roof 146 basic 160 ultimate mph wind speed. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks. Woven closed cut and open.

We describe how to construct three common styles of roof valley. Special pricing available for large quantities. Riverside provides roof valley flashing for general contractors roofers and do it yourself home owners. 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 flashings are custom fabricated to any measurements and angles and usually measure 10 in length but can also be we can also match any profile.