I have been given a lime paint recipe that uses salt to make the paint wipeable. Would you recommend to add salt to lime paints?
There are many different additives in home recipes for lime paints. When lime paints were almost the only universal paint in use, people added to the paint whatever was at hand or was available locally : larder, fish oil, salt, blood and some more exotic additives. Salt was used in some regions, particularly coastal areas. Generally speaking, the use of salt in or on buildings must be avoided. Salt in either solution or crystalline form is not harmful, only with changing humidity levels will salt become destructive within the body of a wall. As salt crystallises, it’s volume is increased by many times and will gradually destroy the surface of any wall by means of exfoliation. BAUWERK paints use a blend of natural oils to achieve a wipeable finish. These will not harm the walls and allow full permeability, that is the exchange of atmospheric moisture in and out of the walls.
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