Salt damp (rising damp) occurs when moisture is drawn up from the soil under a stone (or brick) wall. The water carries with it salts that over time compromise the strength & integrity of the stone. There are sometimes water marks & or a white powdery residue on the surface of effected areas, usually isolated to the lower sections of walls. While there is moisture present in the walls this can allow mould, mildew & fungus growth which has been linked to allergies, asthma, respiratory infection & sinus problems experienced by home occupants.
Heritage Solid Plastering offers a comprehensive salt damp treatment. This involves injecting the wall with Westox's Chemical Dampproof Course. Salt is then removed by applying Cocoon (a poultice medium designed specifically to remove salts). When the wall is dry, it is then rendered with sand, cement & Westox's Salt Retarder. For further information please see Westox's website: www.westox.com.