XR Rail Family - Tech Brief
Solar Is Not Always Sunny
Over their lifetime, solar panels experience countless extreme weather events. Not just the worst storms in years, but the worst storms in 40 years. High winds capable of ripping panels from a roof, and snowfalls weighing enough to buckle a panel frame. XR Rails are the structural backbone preventing these results. They resist uplift, protect against buckling and safely and efficiently transfer loads into the building structure. Their superior spanning capability requires fewer roof attachments, reducing the number of roof
penetrations and the amount of installation time.
Sloped roofs generate both vertical and lateral forces on mounting rails which can cause them to bend and twist. The curved shape of XR Rails is specially designed to increase strength in both directions while resisting the twisting. This unique feature ensures greater security during extreme weather and a longer system lifetime.
XR Rail Family
The XR Rail Family offers the strength of a curved rail in three targeted sizes. Each size supports specific
design loads, while minimizing material costs. Depending on your location, there is an XR Rail to match.
The following table was prepared in compliance with applicable engineering codes and standards. Values are
based on the following criteria: ASCE 7-10, Roof Zone 1, Exposure B, Roof Slope of 7 to 27 degrees and Mean
Building Height of 30 ft. Visit IronRidge.com for detailed span tables and certifications.