Damp proofing or a Damp-Proof in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. Dampness problems are among the most frequent problems encountered in residences.

What is the purpose of a damp proof membrane?

Where insulation is concerned, fitting a damp-proof membrane is important, as it safeguards the insulating properties of the material. The membrane is also used to protect building structures against damp. For a timber structure, the damp-proof membrane offers protection against rot and mould.

Where do you put a damp proof membrane?

It is often used underneath a concrete floor to stop it from gaining moisture. A damp proof membrane can also be placed above the concrete in the walls in conjunction with a damp proof course (DPC).