Framing Intersecting Roof Lines

Rafter forms a depression in the roof instead of a hip.

Framing intersecting roof lines.

Learn more about off angle roof framing. A hip rafter is called for only when framing a hip roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. In a standard gable roof the ridge. The valley is formed where the two different sections of the roof meet generally at a 90 angle.

This type of roof is more complicated than the figure 2 1 most common types of pitched roofs. Like the hip rafter it extends diago nally from the top plate to the ridge. Position the square at the end of the rafter board with the tongue on your left and facing away from you. Lay your square in the corner of the plywood drawing working from the side of the diagonal line that represents the main roof.

A jack rafter is a shortened com mon rafter that may be framed to a hip. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. Intersecting the intersecting roof consists of a gable and valley or hip and valley. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition.

Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. It extends from one gable end to the other at the peak of the roof. Is that it is more difficult to construct than a gable roof. Keeping the outside edge of the blade flush with the edge of the plywood slide the square until the 12 inch mark on the tongue intersects with the hip.

The ridge board is the horizontal framing member that defines the roofline in a gable roof. Explore framing complexities that result when roofs of two different pitches intersect.