Roof Framing Valley Rafter

Position the square with both the 8 inch on the outside edge of the tongue and the 12 inch on the blade on the upper edge of the board.

Roof framing valley rafter.

Use the body long side of the framing square. However since there is some load transfer with these members the code requires a nominal 2 thickness and bracing to a load bearing partition at the upper end or to be designed as a beam with proper supports. A valley rafterforms a depression in the roof instead of a hip. Rafter layout with a framing square this example is for a roof with an 8 12 pitch position the square at the end of the rafter board with the tongue on your left and facing away from you.

Next you will need to use the wall plate to rest the rafters on. 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. Similarly hip and valley rafters provide the point of connection for roof rafters framed at angles. Keeping all of the crowns pointing up prevents waves from marring the finished roof.

A roof for insulation solar panels and bedrooms. Now you can nail the rafters to the ridge beam. Start by cutting the angles of the rafter s tail ends as well as the vertical cuts that are needed at the rafter tails. The valley rafter tie beams and joists will move the weight of the roof to the walls.

The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. Because most framing lumber is not perfectly straight i check each piece and mark the crown before i start cutting the lumber into rafters. Like the hip rafter it extends diago nally from the top plate to the ridge. Rotate it 180 from how you ve been using it so the right angle is pointing up.