Our Hard Top is a hybrid barrier in rubber and metal. The mobile part of the barrier consists of a tube in rubberized textile, similar to that of the Rubberdam. The tube is made in such a way as to guarantee impermeability to the filling fluid, and it is protected by a metal cover. When the tube is inflated, the shields create a barrier to water. When the barrier is moving down to its non-operational position, the shields protect the tube from objects that could otherwise damage it.
Hard Top is a dam suitable for rivers subject to surges and floods, and it lowers when the flood surge arrives, preventing the river from bursting its banks.