Waterproofing of roofs, balconies and walkways – Part 1: Non-utilized and utilized roofs – Requirements and principles for execution and design
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2017

Waterproofing of roofs – Sealings for non-utilized roofs – Part 1: Terms and definitions, requirements, design principles
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2010