Purlin Spacing For 29 Gauge Metal Roofing

An engineer will use a load chart in order to determine the spacing between metal purlins.

Purlin spacing for 29 gauge metal roofing. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. 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. Once the purlin spacing is determined then the metal roofing panels are typically attached to every line of purlins. Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry.

Do all roofing projects require purlins. When using purlins fabral recommends a maximum spacing of 24 on center note that 5v requires solid decking. Pullout values decrease if the fasteners protrude completely through the purlins. 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.

R panel install manual metal roofing vinyl siding answer to the growing demand for metal roofing and siding needs. This will depend upon the type of panel that is used and the thickness of the steel. We do recommend it however. 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.

22 24 26 29 when it comes to metal roofing gauges thicker typically means that the cost will be higher. Fyi we run purlins on 3 5 feet on center depending on size of purlin. Kiln dried softwood is recommended for purlins or decking pine fir hemlock and spruce.