Methods of Damp-proofing There are several methods used for damp-proofing, including: Damp-Proof Course (DPC): A horizontal barrier, often made of impervious material, installed at the base of walls to prevent moisture from rising from the ground. Damp-Proof Membrane: A sheet of material used to create a waterproof barrier, often placed under floors or on walls. Damp-Proof Injection: A process where a water-repellent cream is injected into the walls to create a barrier against rising damp. Damp-

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How Damp Proof Course (DPC) is supplied What is it? A damp proof course (DPC) is a barrier, typically made of materials like bitumen, plastic, or slate, that is installed in the walls of buildings to prevent moisture from rising through the structure. Specifically, it protects against: Uses: 1. Rising Damp: This occurs when groundwater moves upward through the porous materials of the building, such as brick or mortar. The DPC prevents this moisture from penetrating the walls above the course. 2.