Damp Proof Membrane - 25mtr x 4mtr x 1000 gauge

Damp Proof Membrane 25m x 4m x 250mu (1000 gauge)

A Damp Proof Membrane is essentially a thick polythene sheet laid under the floor slab, to allow the slab to dry out and keep out groundwater. It is often laid on a bed of sand, to prevent any sharp edges of stone or hardcore from damaging the membrane.