Roof Rafter Spacing Shed

For standard shed roof rafter spacing see rafter span chart.

Roof rafter spacing shed.

As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. If you get premium kiln dried lumber then you could span 10 5 with the same size of lumber and rafter spacing. This is most likely the standard size that you will find on pre made roof trusses. But they do tend to space rafters in one of several industry standard increments typically either 12 16 or 24 inches apart.

The typical standard for the spacing on the roof trusses is 24 inches. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof. As most building these days are using those pre made trusses on the roof 24 inches become the main size for any roofing construction when it comes to its truss installation. A shed roof slopes in one direction only.

It is possible to calculate a birdsmouth near the top of the rafter for a freestanding shed roof by checking the kneewall checkbox and entering a setback for the kneewall that positions the upper birdsmouth in the desired location. Builders aren t bound by standard rafter spacing measurements. For instance 2 grade 2x4s at 16 on center will span just over 9. Easy rafters is designed to calculate shed roofs that are framed to a ledger board nailed against a vertical wall not freestanding shed roofs supported by walls at both ends.

For heavy loads 2x4s can span up to 5. 2 4 rafters can span up to 7. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.