A damp proof course (DPC) is a vital horizontal, impervious barrier (typically polyethylene or bitumen) built into walls, usually 150mm above ground level, to prevent moisture from rising through capillary action.
It safeguards structural integrity, prevents mold, and stops decay in walls and floors.
Proper installation involves placing the DPC on a mortar bed during blockwork, often connecting with a damp proof membrane (DPM).
Key Aspects of Damp Proof Courses (DPC)
Purpose: Prevents rising damp, which causes paint to peel, plaster to flake, and structural damage like wood rot.
Materials: Commonly made from durable polyethylene, heavy-duty rubber, or bituminous materials.
Application: Positioned at least 150mm above ground level. It is laid between two layers of mortar on the first course of blockwork.
225mm x 30m