Roofing tile with rainwater guide grooves

摘要

The tile has folds at its head and foot, and especially has doubled side and covering folds. On overlapping other tiles, rainwater grooves are formed along the head and side, and the groove of the outer side fold has a water discharge opening. The rib (325) of the middle covering fold on the underside of the tile, is guided linearly from the head in the direction of the foot. It ends in front of a stacking hump on an overlapped neighbouring tile, and the cross section of the water discharge opening is narrowed.