![DPM - Damp Proof Membranes](http://www.heatandscreedstore.co.uk/cdn/shop/collections/lfs_liquid_screed_1.jpg?v=1646403649&width=1000)
A damp proof membrane (DPM) is a type of membrane material is used to prevent dampness from occurring through capillary action. It is often used underneath a concrete floor to stop it from gaining moisture.
When a structural DPM is damaged or missing, Liquid or surface DPMs can protect the floor covering from residual construction moisture and rising damp.