This assembly details a vent pipe penetration through a roof system consisting of a steel roof deck, insulation, and a single-ply roofing membrane. The pipe is flashed with a membrane boot that is hot air welded to the field membrane at the base. The top of the flashing boot is sealed with mastic and secured to the pipe using a stainless steel draw band. The flashing boot must extend a minimum of twelve inches above the roof surface.
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