Rising damp appears where there is no waterproofing or where waterproofing is damaged. Major building materials (brick, mortar, stone...) are porous where capillary elevation pushes water into material and enables its entrance into basement.
Water accompanied by ground salts can rise more than 2 meters above ground level into walls. Walls start to dry, water evaporates, what leaves salt deposits and destroys mortar and walls (efflorescence). Frost improves this process. Repeated application of mortar or macro porous plaster can’t dry wet walls by its self.
Surface tension of water molecules enables capillary elevation into walls thanks to opposite polarity between walls (+) and moist ground (-). Device Prosystem broadcasts weak electromagnetic waves of low frequency into walls. This reduces surface tension what binds water molecules and makes them heavier. This way water goes back to ground and further rising is stopped.
Obvious signs of rising damp are:
- unpleasant smell of humidity
- mold appearance
- mortar falling off from walls
- appearance of lime and nitrate on walls
- expressively cold surfaces of walls
Rising damp is characteristic for old buildings built in the time when waterproofing materials, like bitumen or other modern materials, were unknown. Often, old buildings were built without foundation.
Rising damp can appear in new buildings where waterproofing was applied. In this case we consider damages or waterproofing frazzle. In the case of flood rising damp is present in walls because of waterproofing bridge.
Facade damages up to 5m of height:
- rising damp affects ground level of building but it also affects floors depending on walls thickness.
- white crystals of mineral salts and mould appear on wall
- strain caused by crystallisation is one of the biggest in nature and it makes significant damage
- mortar on facade is crumbling, lichen like spots appear, such like surfaces are blown and detached from base and finally fall off
- walls are cold and moist, unpleasant smell of humidity is actually the smell of stagnant and rotten water in walls that evaporates into living space bringing bacteria and fungus while rising relative air humidity
- If rising damp is not stopped on time it creates damage irretrievably because water in walls changes physical state. Winter frost and summer vapour exchange in construction what devastates walls slowly.
- At the end, we have to be aware of fact that living in such like buildings brings health risk, decline of immunity, asthma and allergic reactions.