Damp proofing is quite technical and is best left to the professionals, but be sure to use an expert that is affiliated to the Waterproofing Federation of South Africa Waterproofing Federation of South Africa. It is much better to solve the root cause of the problem than simply to make a temporary decorative repair.
A damp proof course (DPC) is a physical barrier inserted into the fabric of a building to stop water passing from one place to another. This can be on a horizontal plane, stopping water rising up from the ground by being sucked up by the dry masonry above, or vertically to stop water passing from the outside of a building, though the masonry, to the inside. The most common material used it a waterproof plastic sheet.Gardening & Outdoors, How-To, Renovating