Abstract: An interlocking roof panel has an upper section and a lower section dividing the panel, the lower section having a lower edge. The panel also has a receiver channel between the upper section and the lower section, the receiver channel having a groove undercutting the lower section. A claw protrudes from the lower section and extends beyond the lower edge of the panel, the claw is engaged with the receiver channel of another roof panel.

Abstract: The invention relates to a system for coating dimensionally stable construction materials (1), especially facade components, as protection against environmental influences. The aim of the invention is to provide a system and a method for coating dimensionally stable construction materials, by which means the construction materials can be protected against atmospheric exposure in a rapid, simple and durable manner. To this end, a base material (2) having a rubber-elastic behaviour and containing a reinforcing mat (3) is applied to the construction material (1), and an outer layer (4) comprising an acyl copolymer as a binding agent is applied to the base material (3).