Versico’s HPVX Fasteners are used in conjunction with TPO, PVC, and KEE HP isoweld Fastening Plates to secure VersiWeld® TPO, VersiFlex™ PVC, and VersiFlex KEE HP roofing membrane to 20-gauge (0.91 mm) or 22-gauge (0.76 mm) steel or wood decks (minimum 15⁄32" [12 mm] CDX plywood). HPVX Fasteners provide excellent driving performance, backout and corrosion resistance, and pull-out values. The isoweld Fastening Plate is designed to attach TPO, PVC, or KEE HP roofing membrane from the underside using the isoweld induction welding tool.