Efflorescence is a major problem here in Cyprus, the construction materials of the building are a major factor. The local concrete is typically made up of crushed rock which has a high proportion of salts and minerals. Clean builders sand is not so widely available therefore our concrete and mortars are not so pure. Basically the salt content of our properties is very high. The next ingredient is water or moisture being introduced into the wall by means of a leaky pipe, poor external weather protection or rising damp. This moisture will dissolve the salts in the structure and carry them to the surface where they are deposited as powder or crystals. This is an unsightly problem which will lift the paint off the walls and if left untreated will deteriorate the construction itself.