Roof Framing Overbuild

Nail the first boards on top of your wall where you plan to build your roof.

Roof framing overbuild.

The function of each component is. Rafters act more like the top chord of a roof truss than as a roof joist. Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs. 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.

Advanced roofs three gable overbuild. Line length is the hyptenuse of the triangle whose. Use of rafters trusses and a truss base polyline are demonstrated architectural home design software. First set the new rafters or trusses on the addition walls up to the point of the eave of the main house and snap chalklines on the shingles to mark the center of the new valley.

Use of rafters trusses and a truss base polyline are demonstrated. Overframe on a set of plans means to build on top of another structure such as has been defined earlier. When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm. The exposed edges of the 3 layers of rigid insulation are no longer exposed.

A roof having an 8 span framed with 2x12 rafters is over framed unless it was done to achieve a specific purpose such as r value. You can strip the shingles out of the area that the new roof will cover but to be safe i often leave the old shingles in place and frame over them. Over frame in my mind is to over build something for no apparent reason. Needed to tie the roof together where the rafters are framed at an angle to each other.

The rafters carry the applied loads to the exterior walls. Box beam gable framing new gable overhang is framed in the form of a box beam hanging off of a new layer of roof plywood roof sheathing cantilevered over the top of the 3 layers of rigid insulation. Hip roof framing hip to common to ridge join diagram ply sheathing angle and cut set back both sheet orientations sheathing hip cut calculator hip roof ply cut angle diagram 1138 93 ft 35 6 sheets 5 10 15 waste 40 sheets. A third gable roof is joined to a main roof in an overbuild remodeling situation.

Figure 2 2 roof framing terms. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.