Penetrating damp is the most common form of dampness in buildings. Dampness occurs areas as a result of water ingressing horizontally through gaps (sometime minute) in the building structure. Rising damp describes the action of ground moisture rising up a masonry wall by capillary action. It potentially occurs where there is no damp-proof course (DPC) or where the DPC has been damaged or bridged.
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- Penetrating damp is the most common form of dampness in buildings. Dampness occurs areas as a result of water ingressing horizontally through gaps (sometime minute) in the building structure. Rising damp describes the action of ground moisture rising up a masonry wall by capillary action. It potentially occurs where there is no damp-proof course (DPC) or where the DPC has been damaged or bridged. Theoretically, moisture can rise up the wall to a height of a metre and it will often leave a characteristic horizontal 'tide mark'. However, tests have been carried out by placing walls into baths of water to test for capillary action but water has never risen above the brick immersed in the water . The historic city hall in Bamberg stands in the river Regnitz and its bridge remains dry without any chemical, mechanical or electronical damp-proof course . "Rising Damp" is most often caused by damp penetration which is then absorbed by the plaster which is highly absorbant.
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- Penetrating damp is the most common form of dampness in buildings. Dampness occurs areas as a result of water ingressing horizontally through gaps (sometime minute) in the building structure. Rising damp describes the action of ground moisture rising up a masonry wall by capillary action. It potentially occurs where there is no damp-proof course (DPC) or where the DPC has been damaged or bridged.
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