Purlin Spacing For 29 Gauge Metal Roofing

Kiln dried softwood is recommended for purlins or decking pine fir hemlock and spruce.

Purlin spacing for 29 gauge metal roofing.

We do recommend it however. An engineer will use a load chart in order to determine the spacing between metal purlins. This will depend upon the type of panel that is used and the thickness of the steel. When using purlins fabral recommends a maximum spacing of 24 on center note that 5v requires solid decking.

Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. Screw line spacing for metal roofing over metal purlins. R panel install manual metal roofing vinyl siding answer to the growing demand for metal roofing and siding needs. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.

Once the purlin spacing is determined then the metal roofing panels are typically attached to every line of purlins. 22 24 26 29 when it comes to metal roofing gauges thicker typically means that the cost will be higher. R panels provide for attachment to metal purlins a minimum of 12 x 1 hex head tek for 2 foot spacing between rows of screws multiply the total linear feet of metal times 1 9 retrieve content. Some people may believe that thicker is always better but whether it needs that added strength actually depends on the type of building construction as well as its location.

Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry. Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig. Fyi we run purlins on 3 5 feet on center depending on size of purlin.