Steel Roof Rafter Spacing

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.

Steel roof rafter spacing.

Twenty four inches is a common spacing of furring strips for a metal roof. Do not use pressure treat wood for the purlins it will eat up the metal roofing and screws. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. Measure each section of the roof from.

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. It is always better to have a large rafter rather than be concerned with a sagging 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. The 2 x 6 rafters are spaced 24 on center the length of the barn.

Rafter spacing depends on the roofing panel size. Keep it at 24. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. So the space between rafters can be greater without reducing the maximum span.

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. 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. Typical standard the typical standard for the spacing on the roof trusses is 24 inches. I want to cover the rafters and trusses with thick sheetrock then paint to hide the added insulation and wiring.

Never seen anyone use 2 x 4 s always 1 x 4 s. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Rafter spacing for metal roof. This is most likely the standard size that you will find on pre made roof trusses.

For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. There are two double trusses 7 apart and spaced at 12 foot centers in the middle. Again make sure to consult local codes. Configuring your metal roof batten layout access the roof using an extension ladder.