Rising damp is an affliction that can affect both internal and external walls. The source of the dampness, in this case, comes from groundwater. The bricks and mortar in dry upper parts of the wall act like a wick, drawing water upwards from the ground, resulting in damp. Well maintained, well-constructed walls will have an efficient physical damp proof course (DPC) and are unlikely to possess dampness unless the damp proof course has been compromised in some way.
Rising damp in London buildings and properties is a fairly common problem, especially in older buildings or places with poor ventilation.
Once the damp proofing course has been compromised, remedial action is required as soon as possible because continued presence of dampness will lead to deterioration of the brickwork and internal plaster or decor.
Internal plaster in the home can break down quickly when exposed to dampness. This can look unsightly and replacement is sometimes required for effective treatment.
After a survey to identify the type of damp concerned, some or possibly all of the following actions may be necessary:
However, you should be wary, as many of these signs can also point to a different diagnosis. Water ingress from defective render, poor guttering, pipes and roofing (penetrating damp) plus plumbing leaks will also exhibit moisture patches. These will not be cured with a damp proofing course. Rising damp quotes from professionals like Garratt’s Damp & Timber Ltd are the best way to ensure your home is treated in the best and most appropriate way.