SBS Curb for Multiple Penetrations

(1) Gypsum Overlay Board: If required by design authority.
(2) Vapour Retarder: If required by design authority.
(3) Insulation: See available insulation products in the Accepted Materials section of this Manual.
(4) Insulation Overlay Board: As required.
(5) Primary Membrane and Membrane Protection
(6) Membrane Flashing: Mechanically fasten to top of curb (C).
(7) Base Metal Flashing: Mechanically fasten to top of curb, standing seam at corners of cant, optional on flexible membrane systems. Optional on flexible membrane systems. Required on assemblies using gravel ballast filter mats.
(8) Metal Counter Flashing
(9) Metal Hood

(A) Acceptable Deck
(B) Air / Vapour Seal
(C) Wood Blocking/Curb: Minimum 200 mm (8") and maximum 300 mm (12") above finished roof surface.

NOTE: Refer to RGC Guarantee Standards for additional requirements.