Material of exterior walls, other [EWO] - jcgomezz/Building_taxonomy GitHub Wiki

The material covering the exterior walls is known, but it does not fit any of the definitions found in this table.

Exterior shell (walls and the roof) of the National Swimming Center in Beijing, China is made of a 0.2 mm thick plastic Teflon-like foil, which simulates bubbles (S. Brzev)