Framing Roof Valley Rafters

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Framing roof valley rafters.

After installing the rafters we still had to extend the porch roof back over the shed roof creating a valley on either side. Valley rafter a no math approach to valley plates whether you re tying in new gable dormers or adding a chimney cricket during roof framing giving the valley jacks a place to land is an easy task with these step by step instructions. This article will discuss a gable roof without valleys or dormers because it s the most common and the easiest for a first time builder to tackle. A jack rafter is a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both.

The total rise of hip and valley rafters is. 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. Thus there are hip jack rafters and valley jack rafters. The roof rafters provide integral structural support to the roof.

The first cut that i make on both the common rafters and the valley rafter is the plumb cut where the rafter will meet the ridge board. Blind valleys simplify framing. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.

Therefore the pitch of the valley rafter is 12 in 17.