Framing Roof Valley Rafters

Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes.

Framing roof valley rafters.

Getting the rafters right. Http amzn to 2sfscbz swanson speed square http amzn to 2svgnvt 16 x 24 framing square starrett http amzn to 2sflm5v milwaukee circular saw http amzn. The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. Framing a dramatic dormer if doghouse dormers or shed dormers aren t dressy enough a dormers can add an exciting design note and they re easier to seal against the elements.

The rafters carry the applied loads to the exterior walls. Two factors complicated the framing of this roof. In a rafter roof all of these components are required to provide a stable roof. Used by carpenters union apprenticeship programs from hawaii to new york.

A valley rafter is built similar to other rafters but it runs from a wall plate to the ridge along the valley of a roof. Connect a flat roof to a sloped or pitched roof with a ledger board. The rafter book works. One pair of gables is lower than the other.

Systems are designed ahead of time and optimized to lower cost while adding value to the framing process. The function of each component is. Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof. Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties.

Cuts are given with framing square layout and degree settings for cuts with skilsaws and with degree settings for compound miter or radial arm saws. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. And the room below gets a cathedral ceiling. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition.

This is called a blind valley and it carries the shorter valley and the lower ridge. Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other. Start by cutting the angles of the rafter s tail ends as well as the vertical cuts that are needed at the rafter tails. On the common rafters the plumb cut is marked with a framing square for a 12 in 12 pitch 45 and cut square i e no bevel.

Become a faster more accurate and more efficient roof framer with the rafter book. Framing a roof valley do the math on a calculator so that you can concentrate on what s important.