Glossary term
Damp-proof membrane (DPM)
Also known as: DPM, moisture barrier
Definition
A moisture barrier used over concrete subfloors to stop residual or rising damp reaching a moisture-sensitive floor such as laminate or wood.
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Related flooring
Related terms
Term
Subfloor
The structural floor surface beneath your floor covering — usually concrete, timber floorboards or chipboard. Its condition and flatness strongly affect which floors suit and how much preparation is needed.
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Screed
A layer of material, often sand and cement, laid over a concrete base to create a smooth, level surface. New screed holds construction moisture and must dry before moisture-sensitive floors are fitted.
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Underlay
A cushioning layer fitted under carpet or a floating floor that adds comfort, warmth and sound insulation and can help the floor covering wear more evenly.
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