Ground construction components are being used more and become more frequently habitable rooms. Therefore, these components must be (wall, floor) sealed and thermally insulated.
For these reasons, it is advisable for each owner to decide to take a long term reliable functioning waterproofing sheet. This investment pays off, because a flexible use of space is so made possible. If a functioning waterproofing is forgotten, remediation is very expensive and due to the inaccessibility often no longer possible.

Depending on soil conditions it is differentiated according to different load cases such as soil moisture, non-pressing water, pressing water as well as certain areas with radon gas.