Why should I use a limewash?
Limewash protects underlying lime coating and maosnry as it acts as sacrificially. It also remains vapour permeable thus allowing moisture to evaporate from the building fabric. Most modern masonry paints have very low vapour permeability (if at all) and will trap moisture within a wall or building, leading to greater problems of internal dampness and timber rot. Modern masonry paints also tend to peel and crack, and are affected adversely by UV light, unlike limewashes.
