6. 1. 1. Avoiding vapour barriers made from composites

Composites are building materials made from at least two different constituent materials that are fully bonded over the entire surface and cannot be separated manually. As a rule, they are difficult to reuse and often, only low-level disposal is possible. [Zwiener 2006]

Vapour barriers and wind barriers must consist of either renewable materials (e.g. paper) or a single type of plastic. Additives from other materials are admissible up to a maximum content of 10% w/w.

Supporting documents:
Manufacturer's confirmation.

Alternatively, the corresponding baubook declaration may serve as evidence (www.baubook.info/oea).

Zwiener 2006

Gerd Zwiener, Hildegund Mötzl: Ökologisches Baustofflexikon (3. Aufl.) Heidelberg: C.F. Müller 2006