Framing Roof Valley Rafters

One pair of gables is lower than the other.

Framing roof valley rafters.

Getting the rafters right. Start by cutting the angles of the rafter s tail ends as well as the vertical cuts that are needed at the rafter tails. And the room below gets a cathedral ceiling. Used by carpenters union apprenticeship programs from hawaii to new york.

Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties. Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof. 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. 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.

Systems are designed ahead of time and optimized to lower cost while adding value to the framing process. 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. 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 solution was to run one valley rafter on each side of the roof through to the main ridge.

To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. The rafter book works.

This is called a blind valley and it carries the shorter valley and the lower ridge. California trusframe llc components and latest modern technology are an efficient reliable solution for today s builder. Connect a flat roof to a sloped or pitched roof with a ledger board. You can build a valley rafter very simply.

The function of each component is. 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. 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.

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. Two factors complicated the framing of this roof.