Framing Intersecting Roof Lines

At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing.

Framing intersecting roof lines.

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. Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Add the length of the overhang beyond this mark and. Is that it is more difficult to construct than a gable roof.

Thus there arehip jack raftersand valley jack rafters. Lay your square in the corner of the plywood drawing working from the side of the diagonal line that represents the main roof. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. A jack rafteris a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both.

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. In a standard gable roof the ridge. Learn more about off angle roof framing.

Position the square at the end of the rafter board with the tongue on your left and facing away from you. 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. Explore framing complexities that result when roofs of two different pitches intersect. The valley is formed where the two different sections of the roof meet generally at a 90 angle.

The ridge board is the horizontal framing member that defines the roofline in a gable roof.