Sunken rooms are those that are formed below the normal level of the house or building by design due to terrain or architectural needs. This could be the lounge, dining room or storage. Whereas these rooms are below normal levels of the building and the abutting ground is normally moist and this leads to wetness of the surrounding building materials like walls or concrete.
In the event that dampness occurs, as materials used to construct walls are permeable, the internal part that is plastered and painted shows some moss like or hairy substance that is called efflorescence. The treatment to dampness or efflorescence in sunken rooms is by water proofing the internal part of the wall. The method involves using materials that are waterproof to stop the wetness from coming into the room.
The wall is hacked to remove the plaster at the depth below normal level of the building. The level could be say three hundred millimeters or one feet below and this is the part that is treated. Once the ... more.
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