Rising dampness occurs when water enters a building through capillary action.
Rising dampness is commonly encountered in many buildings but is also often miss-diagnosed.
Water rising from the ground into a building will often introduce salts into the walls and plaster coats, which over time can become highly concentrated on the surface.
Treatment of rising dampness involves:
- Reinstatement of a damp proof course (usually chemical, by way of injection into the masonry)
- Removal of affected plaster
- Reinstatement of affected plaster incorporating a salt inhibitor and a waterproof additive