Rafter Spacing For Corrugated Roofing

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.

Rafter spacing for corrugated roofing.

So the space between rafters can be greater without reducing the maximum span. Twenty four inches is a common spacing of furring strips for. 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. 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.

Rafter spacing depends on the roofing panel size. You have to take the width of your roofing panel into the considerations. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. The most common measurement used for rafter spacing is either 16 or 24 inches.

Posted in metal roof roof types. Correctly measure the spacing of furring strips for a metal roof to further decrease condensation. 24 1 2 every 7 ft. This allows the panels to be securely attached to the rafters for maximum stability.

The same concept holds true for roof trusses. Nail round and corrugated molding strips to framing then paint or stain wood before installing panels. You also need to add furring strips. 24 1 2 every 6 ft.

6 lay panels on rafters with one corrugation overlap and fasten with aluminum screw nails. 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. 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.