Why Important
How to fix
External Treatment
Results will often be achieved by digging out earth which has been banked against a wall, and by clearing away trees and shrubs which have been planted too near the building. A ‘dry area’ along the base of the wall, formed by lowering the water table with site drainage, will assist in many cases.
Internal Treatment
Waterproof cement, lime and sand undercoat plaster will hold back considerable penetrating and rising dampness, provided the background is well wetted before the plaster is applied, so that it achieves good adhesion. Any normal finishing plaster can be used on top of the undercoat, with the exception of pre-mixed lightweight plasters, which are not designed for this type of background.