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Protect floors and foundations from moisture with our range of DPM (Damp Proof Membrane) products, essential for long-lasting building and renovation work. A damp proof membrane is designed to create a barrier that helps prevent moisture rising through concrete and floor structures, reducing the risk of damp patches, mould, and damage to floor finishes over time. Whether you’re preparing a new slab, laying flooring, or working on an extension, using the right DPM helps improve durability and overall build quality.
DPM is commonly used beneath concrete floors, screeds and ground-bearing slabs, helping control moisture movement and support a drier internal environment. It’s also used in a wide range of domestic and commercial projects where reliable moisture protection is required. Choosing the correct thickness and installing it properly—without tears or gaps—helps ensure consistent performance and better long-term protection.
For best results, lay DPM on a smooth base, overlap joints correctly, tape or seal where required, and protect the membrane during installation to avoid damage. With the right preparation, a good DPM helps prevent future problems and supports a stronger finish.
Shop online today for damp proof membrane (DPM) with delivery and collection available.
Three William Hercock depots in Melton Mowbray, Leicester and Oakham supply trade professionals and DIY customers with building materials, timber and landscaping supplies.
Collect from your nearest yard or have it delivered straight to site with HIAB and Moffett offload.
Whichever branch is closest, you get the same service.
Our depot teams can help you choose materials and work out quantities.