Roof to Roof
PermaSpan RR 3-Axis Expansion Joints are ideal for allowing thermal movement and condensation control between two roof systems. The Expansion Joint prevents condensation by insulating against internal building temperatures and the 3-axis movement allows for vertical motion for live loads with no loss of thermal or seismic motion. Also, the continuous cleat protects the PermaSpan RR 3-Axis Expansion Joint from wind-driven rain. This carefully engineered product ensures long-lasting quality and high performance.
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The perimeter edge metal components and/or a wind speed-specific requirement may be available in the roof system manufacturer’s full system warranty and provide additional value. Please contact your roof system manufacturer to verify and comply with all requirements of their total system warranty.