Roof Joist Spacing Shed

In many circumstances 16 inches would be your standard spacing for shed floor joist but this is just a rough guideline.

Roof joist spacing shed.

The figures are based on quality materials. Skillion shed style roof framing. You can increase the number of studs but again that means higher shed stud materials costs. The third option is to build a normal sized shed.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. The tables below give maximum spans for rafters and beams. 2 8 s come standard at 1 inch thick. For light load roofs 24 o c.

If you get premium kiln dried lumber then you could span 10 5 with the same size of lumber and rafter spacing. If the roof is not completely square you can decrease the space between joists but never increase the space. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. For heavy loads 2x4s can span up to 5.

Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. The lower the roof the lower the ceiling you have to deal with when you are inside the shed. If you plan to have eaves to protect the shed walls make sure you add the extra length when measuring the rafters. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed.

2 4 rafters can span up to 7. Typically spacing the studs of a normal sized shed at 24 inches will meet county and municipal codes. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. The skillion and shed style roofs are framed with a single slope 2 4 or 2 6 or thicker rafters spanning from the low wall to the high wall.

2x8s are used frequently for these projects. Metal roofs and pole buildings. Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

Two options that arise could be your wider 24 and your narrower 12 options for spacing. A roof joist is always spaced no more than 16 inches apart from another roof joist. The smallest beams for patio covers are typically 4 by 6. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

In other words you would space a roof joist 15 inches apart from another roof joist but never 17 inches apart.