Steel Roof Rafter Spacing

The typical spacing standards for residential and commercial buildings are about 1 to 2 foot.

Steel roof rafter spacing.

Measure each section of the roof from. Rafter spacing depends on the roofing panel size. So the space between rafters can be greater without reducing the maximum span. Twenty four inches is a common spacing of furring strips for a metal 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. When placing rafters for a tin roof also frequently referred to as corrugated metal or steel it is common to set the distance between rafters based on the size of the roofing panels. Do not use pressure treat wood for the purlins it will eat up the metal roofing and screws. Never seen anyone use 2 x 4 s always 1 x 4 s.

For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet. This is most likely the standard size that you will find on pre made roof trusses. This allows the panels to be securely attached to the rafters for maximum stability.

It is always better to have a large rafter rather than be concerned with a sagging roof. Configuring your metal roof batten layout access the roof using an extension ladder. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. Keep it at 24.

There are two double trusses 7 apart and spaced at 12 foot centers in the middle. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Again make sure to consult local codes. Typical standard the typical standard for the spacing on the roof trusses is 24 inches.

For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. Rafter spacing for metal roof. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. The 2 x 6 rafters are spaced 24 on center the length of the barn.