Adhesives are finally regulated: DIN 4108-11

Establishing an airtight building envelope requires both materials for the surfaces and joining materials for the airtight sealing of joints between components and penetrations, as well as splices and overlappings. In wooden structures, airtight sheeting or sheeting materials are generally used as an air barrier on the surface. Any splices and overlappings are generally bonded with adhesive tape. Joints at adjacent components are often created using paste-like adhesive compounds. DIN 4108-7 (airtightness of buildings) provides a large number of examples of joints with adhesive bonds.