You can use common rafters on any shed roof but they make the most sense when constructing a gable roof or lean to type shed roof where they can sit on or attach to top plates of a wall.
How to make a gable roof for a shed.
Use rafters and 2 4 blockings to assemble the front and back overhangs.
This style has two slopes as opposed to the gable or saltbox designs.
Gable shed roof trusses in place with ceiling joists installed trusses are attached to the top plate by using 3 16d common nails toe nailed from the truss end into the top plate 2 on one side and one on the other.
Fit the rafters to the top of the shed.
Mark the cut lines on the sheets and then get the job done with a saw.
Fitting the panels to the gable ends use t1 11 siding to the gable ends of the garden shed.
Alternatively you can use rafter ties to lock the trusses to the plates.
This design offers the most storage space for a storage shed provided the side walls are 6 foot or more.
Drill pilot holes through the rafters and insert 3 1 2 screws into the blockings.
A gable roof has the same pitch on each side as well as the same length.
Assembling the overhangs build overhangs for the front and back of the 8 12 shed.
Nail the first boards on top of your wall where you plan to build your roof.
Align the edges with attention and then lock panels into place with 6 8d nails.
A gable roof is probably the most versatile type of shed roof and the most common as it can handle any type of pitch.
Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs.
A saltbox shed is a gable that extends further incorporating a covered porch on the front or back.
Build the trusses for the shed using the following free plans.
A lean to is also versatile but features only one roof.
Your local building codes may also require the use of hurricane ties for each truss member where it rests on the top plate.
Place the rafters every 24 on center equally spaced as shown in the diagram.
Nail 2 boards onto your walls as top plates.
Use 2 4 lumber for the rafters and 2 6 lumber for the bottom rafters.
Detailed guide to building a gable roof for your shed.
Lay the rafters on a level surface and then use 1 2 plywood gussets to reinforce the joints.
When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm.