Framing Intersecting Roof Lines

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

Framing intersecting roof lines.

A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. Learn more about off angle roof framing.

Lay your square in the corner of the plywood drawing working from the side of the diagonal line that represents the main roof. Like the hip rafter it extends diago nally from the top plate to the ridge. The valley is formed where the two different sections of the roof meet generally at a 90 angle. Intersecting the intersecting roof consists of a gable and valley or hip and valley.

It extends from one gable end to the other at the peak of the roof. Explore framing complexities that result when roofs of two different pitches intersect. A jack rafter is a shortened com mon rafter that may be framed to a hip. In a standard gable roof the ridge.

Rafter forms a depression in the roof instead of a hip. 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. Is that it is more difficult to construct than a gable roof. 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.

The ridge board is the horizontal framing member that defines the roofline in a gable roof. Position the square at the end of the rafter board with the tongue on your left and facing away from you.