What is Rising Damp?
Rising damp in simple terms is a process of moisture in the ground rising through the pours in the masonry of buildings.
Carrying ground salts into the plaster during this process. These salts (mostly chloride and nitrates) are hygroscopic, this means they have the ability to draw moisture from the air in your room into the contaminated plaster. Giving the appearance of a damp wall, even after the installation.
Therefore it is necessary to remove all contaminated plaster from walls effected by rising damp.