Curb Flange Expansion Joint Cover

  • The expansion joint covers shall be factory manufactured of 3-ply, reinforced EPDM bellow with laminated closed-cell foam backing. 
  • Bellow shall be factory double-locked to galvanized steel flanges along the two long edges, double-locked to aluminum flanges along the two long edges or double-locked to stainless steel flanges along the two long edges.
  • The flanges shall be factory fabricated with an integral counter flashing and drip edge at the bottom for all curb applications: at walls use standard combination curb and straight flange units.
  • All fittings and accessories (corners, tees, closures, etc.) shall be manufactured by Portals Plus, Inc. to suit the project conditions. 
  • Install all units in the longest continuous lengths possible. 
  • All splices must be completed using Portals Plus' standard splice kits. 
  • Installation and attachment of the expansion joint covers shall be in accordance with Portals Plus' instructions and the roofing membrane manufacturer's recommendations.