To provide a rooftop waterproof structure for minimizing a treatment for separation of a waterproof layer by specifying an abnormal place in a small range when a waterproofness abnormal place is caused.
A plurality of zones (a, b and c) are formed to be watertight as a division by connecting first and second waterproof sheets 4 and 6 of the waterproof layer 3 in a connecting part 7 of an intermediate layer 5 via a sheet piece 8. A cylindrical body 1 communicates the inside with a part between the first waterproof sheet 4 and the intermediate layer 5, and is arranged in respective inclined lower end parts such as the zones (a, b and c) in a state of penetrating through the waterproof layer 3 from an impermeable recessed part 11 of a building frame 2.
KUDO HIDETAKA
KAWAMATA KENICHI
