Valley Roof Framing Details

But it doesn t have to be.

Valley roof framing details.

This roof valley is a perfect example. A roof valley is formed where two roof slopes meet. Trussed valley set detail no sheathing continuous 2x4 sp no 2 attached to the roof 146 basic 160 ultimate mph wind speed. The valley is formed where the two different sections of the roof meet generally at a 90 angle.

Framing a complex roof is one of the trickiest parts of home building. 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. Another common design in the northeast is the saltbox which is a gable roof with one longer side. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.

Water collects in a valley to flow off the 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. If you begin with accurate as built measurements and use a construction calculator to do the math you can cut all of the rafters for most roofs on the ground in just one shot. However since there is some load transfer with these members the code requires a nominal 2 thickness and bracing to a load bearing partition at the upper end or to be designed as a beam with proper supports.

Roofs are basically five types. We describe how to construct three common styles of roof valley. Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. Woven closed cut and open.

Similarly hip and valley rafters provide the point of connection for roof rafters framed at angles. This article discusses details and specifications for roof valley flashing for best construction roof leak resistance. The intersecting roof consists of a gable and valley or hip and valley. Shed gable hip gambrel and mansard.

This type of roof is more complicated than the figure 2 1 most common types of pitched roofs.