Metal Roof Rafter Spacing

Let s take a look at the most common types of metal roofs for houses.

Metal roof rafter spacing.

Wider panels allow for greater spacing between rafters. Rafter spacing for metal roof purlin hangers clips are available if you would rather the purlin be on the same level as the rafter rather than on top of the rafter. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. The width of metal panels will determine the rafter spacing.

For heavy loads 2x4s can span up to 5. 2 4 rafters can span up to 7. Rafter spacing is based on the width of the metal roofing panels. Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available.

The wider the roofing panels the greater spacing distance you should put. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Correctly measure the spacing of furring strips for a metal roof to further decrease condensation. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. 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. Determine the location of a rafter by a vertical set of nails in the fascia board or by an. The metal roof purlins spacing must be done correctly within narrow tolerances.

For light load roofs 24 o c. Other relevant factors include the type of wood being used for the rafters the size of the rafters and the load that the rafters need to support. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.