What is rising damp?

What is rising damp and how to recognize it?

Rising damp is water from the soil that gradually moves upward through microcapillaries of the construction material into walls.

Usually it reaches the height of 2 meters carrying dissolved salts, whose crystals cause severe damage. The construction materials start to inflate, peel off in sheets, fall apart and eventually separate from the surface.

Dampness does not affect only the object but also the health of persons who reside in it.

Objects without waterproofing All objects without waterproofing have problems with rising damp.
Older objects Older objects are built directly on the ground, without waterproofing materials.
Newer objects Rising damp can exist in newer objects with waterproofing which are damaged due to wear or other reason

Rising damp is a known characteristic of older houses, buildings, castles, religious structures/buildings and similar.

MORE INFORMATIONS

How to recognize it and health risk

How to recognize it?
  • Visibly damaged internal and external walls up to a height of 2 meters above ground level
  • Mouldy and unpleasant odour of humidity
  • Formation of mould on walls (fungi)
  • Facade plaster decays and crumbles
  • Walls are cold and moist
Health risk

Damp walls contribute to growth of fungi and mould whose organic debris saturates the air and causes various diseases, sleep disorder, weakening of the immune system, allergies, asthma etc.

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Moisture up to 70 %
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Moisture up to 80 %
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Moisture up to 90 %

Moisture levels up to 35% are considered normal

The efficiency of the thermal insulation of the walls decreases when the humidity in the walls increases, which results in high heating costs. To heat the room to 22 degrees, we need more energy.

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