Under base element has plate-shaped base carrier with two sides for manufacturing under base covering on base surface

摘要

The under base element (10) has a plate-shaped base carrier with two sides (30,32) for manufacturing an under base covering on a base surface. A locking system is provided for the groove-spring-connection of two under base elements. A groove has a notch and a spring has a projection. An adhesive such as tiles, laminate flooring, carpet or polyvinyl chloride is applied on an adhesive layer.