Concealed roof air hole

The utility model relates to a concealed roof air hole arranged in a flashing flange of a roof concrete frame column which is certain height higher than the surface layer of the roof, the air hole is communicated with a U-PVC exhaust pipe embedded in the roof, and the upper port of the air hole is fixed with a stainless steel air hole cover through a 90 degrees incurve; the lower port of the air hole is connected with the U-PVC exhaust pipe through a 90 degrees elbow; the U-PVC exhaust pipe is arranged in an insulating layer though an elastic wire; the tail pipe of the stainless steel air hole cover stretches into the port of the 90 degrees incurve; and structural glue is fulfilled on the periphery of the stainless steel air hole cover to form an entirety with the flashing flange. The buried roof air hole disclosed by the utility model has the following beneficial effects: 1. the integral function and aesthetic feeling of the roof are improved; 2. the manufacture is simple and the installation is convenient; and 3. the design is reasonable, and the rule of setting one air hole within 36m2 in the job specification is satisfied.