Interlocking tile for roof

摘要

The tile has a double side groove (514,516) and at least one simple groove at its head, which produces a separating gap along the side and the head when it is covered by neighbouring tiles. The lower end of the inner side groove is tapered to form a wind stopper (5171) which runs to the end wall of the tile. The wind stopper may have the same level as the rib (517) which is associated with the inner groove, and may reduce the flow cross section in the groove by around 30 to 40 percent. The head of the wind stopper may also be inclined (5173).