What is rising dampness?
Rising dampness: Is the upward movement of ground water through permeable building materials by capillary action, the level rising dampness can rise is affected by many factors.
- The water rises through a series of inter-connecting pores within the structure by a process termed ‘capillarity suction’ in simple terms a porous masonry acts like a wick.For rising dampness to occur the suction of the wall must be greater than the suction of the ground otherwise water will not rise.
- Evaporation will have an effect on the height rising dampness will affect a wall.
- Gravity will have an effect on the height rising dampness will affect a wall.
- The Porosity of material the wall is constructed from, will have a major effect of the height moisture will rise.
- The construction and the thickness of the wall structure, will also have a bearing.