A breathable paint or limewash is the best option for vapour permeable surfaces such as lime plaster. A breathable paint will allow moisture to be absorbed before releasing it back into the air.
This will help regulate condensation, mould & mildew. Even in non historic properties, a breathable paint will be beneficial in contributing to a healthier living environment. Modern emulsions which contain plastic should be avoided as they can allow moisture to build up below the surface resulting in damp or paint peeling off.
We hold stock and have tinting machines for both Earthborn and Graphenstone breathable paints meaning we can tint any of their colours quickly on site. We can also pop a free colourcard in the post for you.