Lime paints are made from non-hydraulic white lime, mainly in the form of lime (deposited over several years) or hydrated lime. There are both purely mineral lime paints and products with a proportion <5% organic substances.
Typical applications in the interior are the preservation of architectural monuments, church painting, renovation of old buildings, stables and vaulted cellars.
In outdoor areas, the extremely good water vapour permeability predestines lime paints especially for use on exterior walls made of monolithic, not highly thermally insulated, masonry, e.g. in historic buildings. However, the resistance to air pollution (without additional impregnation) is significantly lower than with silicate paints, for example, because lime is converted into water-soluble gypsum by alkaline environmental influences.
Source: bauwion
