deck drain from outside
underside of deck/roof sheathing – note X-shaped shimming/blocking on top of the TJIs
in order to give the deck a slope towards the drain
underside of deck/roof sheathing – tapered sleepers visible
deck drain before SBS membrane application. Note how the drain flange is set into plywood sheathing so as to ensure a constant slope towards the drain once the SBS membrane is installed.
tapered sleepers over TJI beams
