Toughsheet DPM 300 Micron Damp Proof Membrane, a heavy-duty waterproof polythene sheet designed for construction, flooring, and foundation damp proofing. This industrial-grade 300-micron DPM sheet acts as a reliable moisture barrier for concrete floors, walls, and basements, preventing rising damp and water penetration. Made from high-quality black polythene, it offers durability and long-lasting protection in residential and commercial projects.