SBS Open-wall Scupper Drain

(1) Vapour Retarder: If required by design authority.
(2) Insulation: Mechanically fastened. See available insulation products in the Accepted Materials section of this Manual.
(3) Insulation Overlay Board: Where required.
(4) Primary Membrane and Membrane Protection
(5) Metal Scupper with Hopper: The outside face of scupper to be 37.7mm (1½") lower than the box height with a 12.7mm (½") drip edge. Installed in a thin bed of compatible mastic. Interface between outside wall and scupper should be caulked with appropriate sealant. Installed when wall finish is complete prior to completion of roofing or sheet metal (e.g.: re-roofing).
(6) Scupper Membrane Flashing
(7) Membrane Flashing
(8) Base Metal Flashing: Mechanically fastened. Optional on flexible membrane systems. Required on assemblies using gravel ballast filter mats.
(9) Metal Cap Flashing: Fasten with continuous concealed clip-type fasteners or cladding screws evenly spaced between seams. Flashing 8 and 9 may be one piece.

(A) Acceptable Deck
(B) Air / Vapour Seal
(C) Wood Blocking
(D) Acceptable Wall Surface - Plywood
(E) Wall Finish: Interface between outside wall and scupper to be caulked with appropriate sealant. Installed by trade responsible for outside wall finish if roofing and metal flashing has been completed prior to exterior wall finish.

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.