How Far Apart Rafters For Metal Roof

If you have a simple gable shed roof then using 2 4 rafters makes more sense unless you have a very large shed.

How far apart rafters for metal roof.

All roof rafters should be identical so follow the same steps to measure the plumb cut tail cut and birdsmouth cut. The support system for the roof is comprised of ridgepole and rafters or purlins. Depending on the size of your structure you will need to cut several or many more. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot.

The spacing between rafters in a given building is part of the engineering calculations that determine the required structure of the roof. Repeat the process for your other rafters. 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. To determine how far apart to set rafters measure the width of the metal panel and then the width of the first hill and valley of the panel.

At this point you ve cut 1 roof rafter. Wider panels allow for greater spacing between rafters. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. This translates to seven rows of strips 20 feet long spaced two feet apart or 140 lineal feet of.

In this example the section of roof is 20 feet wide and 14 feet from the fascia to the peak.