Wall and Ceiling 

From the ecological point of view clay is the best material for wall building. Plain limestone plaster, however, will also contribute to a good living hygiene. Exaggerated addition of cement in most cases reduces considerably the wall's and ceiling's capability of absorbing vapour, gases and steam. Mold in the outer wall corners frequently proves that the walls are too tight, not sufficiently vapour permeable. Very often this has been caused subsequently in old buildings. Unreasonable interior insulation with styropor or wallpaper that is not breathable enough may be reasons for moist walls. Often the previous occupier of the house certainly wanted to warm up the cold or moist outer wall by insulating it without considering that it is the dweller who constantly produces humidity in form of vapour that must be able to penetrate through the wall. Often, subsequently even natural products are unsufficient or no help at all. Complete renovation of the walls and subsequent very careful and expert wall preparation is necessary.