Framing Roof Valley Rafters

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.

Framing roof valley rafters. Getting the rafters right. Become a faster more accurate and more efficient roof framer with the rafter book. Two factors complicated the framing of this roof. In a rafter roof all of these components are required to provide a stable roof.

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. 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. Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties. The solution was to run one valley rafter on each side of the roof through to the main ridge.

At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. Connect a flat roof to a sloped or pitched roof with a ledger board. This is called a blind valley and it carries the shorter valley and the lower ridge. One pair of gables is lower than the 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. 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. The function of each component is.

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. 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 rafter book works. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition.

Systems are designed ahead of time and optimized to lower cost while adding value to the framing process. You can build a valley rafter very simply. Used by carpenters union apprenticeship programs from hawaii to new york. Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof.

Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Framing a roof valley do the math on a calculator so that you can concentrate on what s important.