Low Profile Deck Surface Over Impervious Membrane
I have a small area of my garage with a flat(ish) roof covered with GAF Liberty low slope rolled roofing. I want to make this a durable walking surface. The roof (hopefully soon to be a small deck) has a door leading off of it with a threshold; if I build up the surface too much, the deck will be higher than the threshold. I’ve been considering laying sleepers and then Trex or another composite perpendicular to the sleepers. But I know there’s got to be a better way.
Does anybody have any other suggestions / recommendations on how to best make this a walking deck? Thanks in advance.