Damp proofing in construction is a type of waterproofing applied to building foundation walls or chemicaly installed into old buildings to prevent moisture from passing through the walls into interior spaces.

A damp-proof course (often abbreviated to DPC) is a horizontal barrier in a wall designed to resist moisture rising through the structure by capillary action - a phenomenon known as rising damp. A damp-proof membrane (DPM) performs a similar function for a solid floor. Moisture resistance is not necessarily absolute. In simpler words, DPC is used to stop dampness in buldings. Due to capillary movement of water, water rises from earth to the building. Passing through foundation it rises higher to reach walls. Reaching water to walls may damage them by creating cracks, breaking cement-paint bonds and creating dark-spots on wall etc. So, to avoid water from reaching to walls, we lay DPC layer at 150mm above external ground level (the joint level of walls and foundations).or install a chemical damp proof course DPC layer is usually laid below all the walls unaffected from the issue that the respective wall is a load bearing wall or a partition wall.

                                                           

There are other ways of damp entering your home for example : Penetrating Damp, leaks e.t.c for all your damp proofing requirements contact Toner Damp proofing.