Roof Framing Methods

Hot tar and gravel also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel.

Roof framing methods.

If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. Figure 2 2 roof framing terms. Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Roof framing rafter layout.

Position the square at the end of the rafter board with the tongue on your left and facing away from you. On the body of the square the longer side input the 12 and input the 7 on the tongue the shorter side of the square by lining up the stair gauges at the corresponding point on the square. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition.

Standard stick framing or the newer truss framing. California corners 2 stud corners. Stick framed roof is built one member at a time. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing.

Stick framed roofs utilize individual rafters that span from the top of exterior walls to the ridge. When it comes to framing the roof there are two basic ways you can go. The standard practice uses three studs and. On our first two houses we hand framed the roofs.

Nearly all roofs are framed using one of two methods. 3 easy advanced framing techniques ladder t walls. Add the length of the overhang beyond this mark and. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

This is similar to the t wall problem. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it. Line length is the hyptenuse of the triangle whose. This one is a no brainer.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. The pitch can be adjusted so that full and half sheets of sheathing can be used and as a result reduce waste and labor. When an interior wall intersects an exterior wall the standard practice is to. This will the first point of the rafter measurement line.

Roof pitch adjustment in structures that have simple roofs it is easy to adjust the pitch to a non standard pitch that allows for better utilization of roof sheathing. Measure down y height from the long point of the rafter cut and make a mark.