Damp proofing refers to any activity aimed at doing away with the damp on the walls. There are three types of damp namely condensation, rising and penetrating. For condensation, the water on the walls of your house or basement condenses and starts eating the walls from the outside.
For rising damp, it starts from the ground level of your house eating the walls going upwards. Normally, this does not proceed to more than 1.5 meters above the ground. The main cause of this type of damp is the ground (where your house lives) have a high water level or there is a breakage in the drainage system of your house resulting in water spillage.
As for penetrating damp, the water or moisture comes mostly from a fault with the roof. The damp starts eating the walls from the ceiling downward.
