A damp-proof membrane (DPM) is a thin layer of waterproof material that is used to prevent moisture from passing through a surface, like a wall or a floor.
It is often used in construction to prevent dampness from causing damage to buildings and affecting the structural integrity of a building.
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A damp-proof membrane is used by applying it to a surface before the construction of a building. This will create a barrier that will stop moisture from passing through to the inside of the building.
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