Waterproofed uniform slope with glue-down surface material
A simple rooftop deck over living space is built with a single waterproof shallow slope in one direction to an edge drain. Float this floor over this surface without screws or fasteners. No damage to waterproofing and max UV protection. FLoat plates snap to the bottom of the deck plank to elevate the floor 5/16". A thin gauge stone or porcelain tile is bonded¹ to the structural flooring. The completed assembly is a lightweight stone surface less than 15 lbs/sf².