Insulation against ground moisture with a ventilation/drainage function and stud height of 8 mm. An elastic molded membrane using the latest air-gap technology. It consists of a film used for foundation work and simple drainage, providing ventilation for damp walls and preventing water from penetrating the structure from the surrounding terrain. The film can be used in all weather conditions and up to a depth of 5 m under normal circumstances with immediate backfill. Also usable as insulation against radon, with a moderate to high index, penetrating the building from the subsoil.