Damp wall | rising damp

damp wall | rising dampDamp wall is one of the worst defects that can affect a house. Even in its milder toms it is unpleasant but a serious outbreak will first destroy the decorations, then in time attack the woodwork, and eventually strike at the fabric of the building; it will make the place dank and unhealthy. There are three types of damp, each with its own causes and cures. Rising damp, as its name suggests, is damp rising up into the structure from the ground. Penetrating damp, caused by rainwater (or occasionally by water from a plumbing mishap), enters through defects in the shell of the building. The third type of damp is condensation, which originates inside the house. It is not always easy to decide which type of damp your Home is suffering from. In extreme cases it wil1take an expert to give a correct diagnosis. However, there are some general pointers. For instance, if the damp occurs low down on the wall near floor level, you can suspect rising damp. In, say, a bathroom that is prone to severe condensation, the paint can be lifted away from the wall by damp near the skirting, which is a symptom of rising damp, but the cause could equally be condensation streaming down to the bottom of the wall. The effects of condensation can also appear misleadingly on many parts of the walls and ceiling, but this type of damp wall is usually easy to recognize. It occurs when most of the windows are closed (which reduces ventilation) and after water vapour has been released into the air by cooking, washing clothes, or bathing.

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