Abstract: A roof ventilation for a roof having roof tiles with air channels is disclosed. The roof includes a roof supporting structure, a plurality of roof tiles, and at least one vent tile. The plurality of roof tiles reside over the roof supporting structure. The roof tiles include air channels formed therethrough which are in ventilating communication with one another. The least one vent tile resides over the roof supporting structure. Each of the at least one vent tile includes a first upper plate, a second upper plate, and a lower plate. The first and second upper plates are spaced apart from each other, forming a ventilating access. The second upper plate has a first opening and the lower plate has a second opening. The first opening is in ventilating communication with the second opening and with at least one of the air channels. The ventilating access and the first and second openings together permit airflow between regions above and below the roof.