Collection: Liquid Waterproof Membrane

Paint-on waterproofing for floors, wetrooms and awkward details. Waterproof Blue is a roller- or brush-applied liquid DPM for damp floors and slabs, while Poseidon tanks bathrooms and wetrooms to a standard suitable for NHBC and BS 5385-4. The GOAT Liquid Grommet seals pipes and penetrations with an airtight, flexible grommet you squeeze straight from the tube. Every product here cures to a seamless, flexible waterproof layer — no laps, no welds, just continuous protection wherever water is trying its luck.