Building design roof waterproof structure

The utility model discloses a building design roof waterproof structure which comprises a cast-in-place roof layer, a reinforcing base fixedly arranged at the top end of the cast-in-place roof layer, a waterproof bottom plate fixedly arranged in the middle of the top end of the reinforcing base, a heat preservation layer fixedly arranged at the top end of the waterproof bottom plate, and a vapor isolation layer fixedly arranged at the top end of the heat preservation layer. The roof waterproof structure for the building design has the advantages that the waterproof performance of the cast-in-place roof layer is improved through the matched arrangement of the waterproof bottom plate and the waterproof coating layer, the waterproof performance of the cast-in-place roof layer is improved, and the waterproof performance of the cast-in-place roof layer is improved; the top of the structure forms an arched slope surface through the arrangement of the slope making layer, and a plurality of drainage grooves are forme