Rafter Spacing For Metal Roof

Rafter spacing for metal roof.

Rafter spacing for metal roof.

For light load roofs 24 o c. For heavy loads 2x4s can span up to 5. 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 most common measurement used for rafter spacing is either 16 or 24 inches.

It is always better to have a large rafter rather than be concerned with a sagging roof. Determining rafter s spacing is as important as setting the metal roof purlins spacing. Keep it at 24. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

The same concept holds true for roof trusses. Rafter spacing is based on the width of the metal roofing panels. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Never seen anyone use 2 x 4 s always 1 x 4 s.

Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. So the space between rafters can be greater without reducing the maximum span. Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. 2 4 rafters can span up to 7.

You have to take the width of your roofing panel into the considerations. Posted in metal roof roof types.