A damp-proof course (DPC) is a layer of material built into the walls of a building to prevent moisture from rising through the structure. It is typically made from materials such as plastic, bitumen, or slate and is placed horizontally at a strategic height in the walls to create a barrier against water penetration. The DPC acts as a waterproofing measure, ensuring that the building remains dry and free from dampness, which can cause structural damage and health issues if left unchecked.The DPC is an essential component of any construction project, as it helps to protect the building from the damaging effects of moisture. Without a DPC, water can seep into the walls and floors of a building, leading to damp patches, mold growth, and