Contrary to all conventional systems, H60 has no pressure plate with screws every 15 – 20 cm. Traditional system with screws require (according to the installation guidelines) a uniform load on all screws, which in turn requires that all screws must be checked twice with a torque control. No wonder problem arise in practice. This equal pressure by the screws should allow for a uniform pressure on the gasket. When this pressure varies too much, the airtightness and watertightness is compromised.
This implies that for the H60 system the risk of bad airtightness and watertightness, caused by a bad torque of these screws, has been eliminated.