How To Cut Roof Rafters For Shed Roof

How to measure or figure rafter length and mark and cut them accurately.

How to cut roof rafters for shed roof.

On a shed roof rafter run is the distance from a ledger on the main building to the outside of an addition wall or porch carrying beam. Use it to make the proper measurements marks and cuts on each rafter. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. The ridge end of the rafter and often the eve end will need to be cut to the angle of the roof slope.

The first step in building the roof rafters is to cut one rafter board to length with the ends angled properly and then to mark and cut the birds mouth and seat on the rafter. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter. Then assemble your rafter halves into trusses using plywood gusset plates and attach the end rafters to your shed frame. Creating a birdsmouth cut is the classic way to prepare a rafter for a hand cut gable or shed roof.

In this video you will learn all about common rafters. To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch. First cut your rafter boards to size using a circular saw to make sure they fit your roof. For instance 2 grade 2x4s at 16 on center will span just over 9.

Make a birdsmouth notch at the end of each rafter to help it fit into place. For standard shed roof rafter spacing see rafter span chart.