What is a damp proof course and why do I need one?
A damp proof course or dpc is an essential part of the construction process in that its function is to prevent rising dampness. Rising dampness is a result of dampness in the ground being drawn up through the capillary channels in any given building fabric. Generally a dpc will be installed when the building is constructed. In new buildings the damp proof course is physical membrane. This will be laid into a mortar course at the base of the walls. In older buildings it is common for slate or bitumen to be used as the damp proof course and some older buildings will not have a damp proof course at all. As said, all of the above provide a physical barrier against rising dampness but why is this necessary? In short it prevents spoiling of the internal wall finishes. When a wall suffers from rising dampness the associated affects to the internal finishes is staining, salting and peeling paint or paper, blown plaster, rotten skirting boards etc. A damp proof course is designed to stop the da
