Purlins Spacing For Metal Roofing

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

Purlins spacing for metal roofing.

However it is important to note that expected load is a crucial factor while determining this. What do i need to know about installing purlins for my metal roofing project. The metal roofing panels shown in this manual require a mini mum slope of 2 per foot to ensure proper drainage. If the space between posts is greater than 8 feet then brace is needed to avoid buckling.

Once the purlin spacing is determined then the metal roofing panels are typically attached to every line of purlins. Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig. An engineer will use a load chart in order to determine the spacing between metal purlins. Refer to the rain.

Purlin spacing for metal roofing. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. Fyi we run purlins on 3 5 feet on center depending on size of purlin. For 2x6s purlins the posts are spaced in 6 feet distance.

Purlins need to follow the sides edges of the roof it is important to note that in addition to the. Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry. 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. Purlins fabral recommends a maximum spacing of 24 on center note that 5v requires solid decking.