SPRI announces plans to revise wind design standard for ballasted single-ply roofing system

SPRI, the association representing sheet membrane and component suppliers to the commercial roofing industry, announced that SPRI RP-4 2022 “Wind Design Standard for Ballasted Single-Ply Roofing Systems” is being revised and will be re-canvassed for approval as an American National Standard.

This standard provides a method of designing wind uplift resistance of ballasted single-ply roofing systems. It is intended as a design and installation reference for those individuals who design, specify and install ballasted single-ply roofing systems. It shall be used in conjunction with the installation specifications and requirements of the manufacturer of the specific products used in the ballasted single-ply roofing system.

The RP-4 Standard was first approved as an ANSI standard in 2019. This standard is now undergoing its regular review as required by SPRI’s ANSI procedures.

Those wishing to participate in the canvass process may contact SPRI at info@spri.org.