Limewash is a traditional coating made from slaked lime, and it can be pigmented to achieve a wide range of colors. Like silicate paints and stains it is vapor permeable, has no VOCs, and has a beautiful natural matte finish. While part of its appeal is the way it fades and develops an aged look, that also means that it needs regular reapplication and realistically its lifecycle is relatively short in our harsh Midwestern climate.