Masonry - for bricks, adobe, stone, concrete slabs or precast concrete (covered or not with plaster), unfinished concrete and lined lathe and plaster. Walls of metal and glass structures and those lined with marble, stone, etc. are included in this case.

Wood - when any type of finished wood is used, even if not in good condition, except for processed wood from boxes or crates, plywood boards, etc.
Unfinished lath and plaster - when the walls are made of mud or lime and sand with wooden pillars and stakes, indoor partitions, stucco, wattle and dubb, etc.;
Scrap materiall - when material from crates or boxes, plywood boards or empty containers, etc. is used. Wall material already used as such in the past is not considered scrap material.
Straw - when the walls are made of sape grass, leaves, or shells of vegetables, plants, etc.; or
Other - when material that does not fit into any of the above categories has been used.