Soprafix Barbed Seam Plates are engineered to provide exceptional performance when used in specific Soprafix or Unilay mechanically fastened SBS Roof Assemblies It is the installer's responsibility to know the Soprafix system being installed, which Soprafix fastening components are required, where and how often these parts are placed within the System. The installer must center the required Soprafix Stress Plate down the middle of the mechanically fastened side lap of the specified Soprafix membrane. Soprema #15 or #14 Fasteners (or other approved) are installed into the Soprafix Stress Plate according to the applicable Fastening Pattern(s). Unless otherwise noted in the Soprafix Approved Details.