Purlins Spacing For Metal Roofing

Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry.

Purlins spacing for metal roofing.

For 2x6s purlins the posts are spaced in 6 feet distance. By the standard the most used placement of purlin span for metal roof is five foot intervals. Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig. Refer to the rain.

For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. Purlins fabral recommends a maximum spacing of 24 on center note that 5v requires solid decking. Screw line spacing for metal roofing over metal purlins this will depend upon the type of panel that is used and the thickness of the steel. Once the purlin spacing is determined then the metal roofing panels are typically attached to every line of purlins.

The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. Doubling up in the valleys refer to the installation manual for the proper on center spacing and be sure that the. The metal roofing panels shown in this manual require a mini mum slope of 2 per foot to ensure proper drainage. What do i need to know about installing purlins for my metal roofing project.

Purlin spacing for metal roofing. Purlins need to follow the sides edges of the roof it is important to note that in addition to the. Fyi we run purlins on 3 5 feet on center depending on size of purlin. An engineer will use a load chart in order to determine the spacing between metal purlins.