damp proof membrane

Professional-grade Rubber Bitumen Emulsion DPM — a high-performance liquid DPM for concrete floor applications, walls, and below-ground waterproofing Our Rubber Bitumen Emulsion DPM is a professional-grade, cold-applied rubberised bitumen emulsion designed to create a seamless, flexible waterproof coating. Moreover, it acts as a highly effective bitumen DPM (damp proof membrane) and moisture barrier for concrete, masonry, and foundation structures. In fact, it works on both internal and external applications. Additionally, this dual capability makes it ideal for comprehensive moisture protection across all building types. This water-based emulsion dries to a tough, black elastic membrane that prevents water penetration and protects against sulphate attack in soils. Download the Technical Data Sheet (TDS) for detailed specifications and application rates. This advanced bitumen emulsion is engineered for trade and industrial professionals requiring a reliable moisture barrier. As a versatile liquid DPM, it provides superior protection against rising damp and water ingress on a variety of structural surfaces. Whether you are treating a foundation or installing a liquid DPM for concrete floor protection in a new build, this formulation ensures a seamless, flexible, and waterproof finish What is Rubber Bitumen Emulsion? Rubber bitumen emulsion is a water-based waterproofing coating that combines bitumen (asphalt) with rubber polymers to create a flexible, protective membrane. Unlike traditional solvent-based bitumen, our emulsion disperses these materials in water, making it easier to apply, safer to handle, and quicker to clean up. When applied and dried, it forms a tough, rubberised bitumen layer that adheres well to concrete, brick, and masonry surfaces. The rubber component gives it superior flexibility compared to plain bitumen—meaning it can bridge minor cracks and accommodate slight substrate movement without cracking through. Unsure which application method suits your project? Our technical team can recommend the right system, coverage rates, and overlay materials for your specific substrate and use case. Call us on 01942 884122. Why choose rubber bitumen emulsion? Flexible membrane: Rubber polymers allow the coating to move with the substrate, reducing crack propagation Water-based formula: Lower odour, safer application, water-clean tools (no solvents needed) Strong adhesion: Bonds reliably to mineral surfaces (concrete, brick, block, render, screeds) Proven performance: Complies with British Standards for damp-proof membranes and waterproofing systems Versatile application: Brush, roller, or spray—suitable for both horizontal and vertical surfaces What is a Bitumen DPM Used For? A bitumen damp-proof membrane (DPM) is a protective barrier that prevents water and moisture from penetrating building materials and structures. Rubber bitumen emulsion acts as a flexible, adhesive DPM that can be applied directly to surfaces—no need for separate membranes or sheets—making it ideal for both new construction and remedial waterproofing work. Professional Applications: Liquid DPM for concrete floor installations (both new and existing surfaces). Below-ground waterproofing for basements, cellars, and foundations. Heavy-duty moisture barrier for walls and masonry. Comprehensive protection against rising damp in trade and industrial projects Below-ground protection Basement walls and foundations (external face, below ground level) Retaining walls and earth-contact surfaces Tanking systems (walls and floors in basements, cellars, and below-grade spaces) Protection against hydrostatic pressure and rising damp Roof and gutter work Roof valleys, gutters, and downpipe details Flat roof repairs and sealing (non-trafficked areas) Flashing details around penetrations (pipes, vents, chimneys) Crack and joint sealing on roofs Masonry and structural repairs Sealing cracks in concrete, brick, and blockwork Waterproofing rendered or plastered surfaces Repairing failed mortar joints and cracks Protecting masonry from water ingress and frost damage Specialist applications Waterproofing concrete floors before screeding Sealing joints and movement cracks (with reinforcing scrim) Protecting metal surfaces (with appropriate primer/preparation) Remedial damp treatment on existing structures Why use a bitumen DPM instead of alternatives? Cost-effective: Competitive pricing compared to sheet membranes or specialist tanking systems, with minimal waste. Flexible application: Brush, roller, or spray application means it can reach awkward areas, corners, and details that sheet membranes struggle with. Proven performance: Bitumen has been used in waterproofing for decades. It complies with British Standards (BS 6398, BS 8102, BS 8104) and performs reliably in harsh conditions. Good adhesion: Bonds directly to mineral surfaces without additional primers (in most cases), creating a monolithic membrane with no seams or joints to fail. Rubber flexibility: Unlike plain bitumen, the rubber component allows the membrane to accommodate minor substrate movement and bridge fine cracks without cracking through. Durability: When properly applied and protected from UV, a bitumen DPM can last 20 years, especially in below-ground or protected applications. When to use rubber bitumen emulsion DPM ✅ Ideal for: New construction tanking systems (basement walls, floors) Remedial waterproofing on existing structures Roof and gutter repairs Crack and joint sealing Situations where flexibility and adhesion are important Projects with budget constraints (cost-effective solution) ❌ Not suitable for: Permanent wearing surfaces (must be covered with screed, tiles, or protection board) Areas exposed to prolonged UV without a protective topcoat Substrates that are wet or saturated (surface must be damp-dry, not wet) Use with incompatible materials (e.g., certain solvents, oils, foam insulations) Where Can You Apply It? Add bullet list of substrates: Concrete and brick foundations Retaining walls & bridge abutments Tanking systems Floors (sandwich construction) Interior & exterior walls Felt, asphalt, lead, zinc, aluminium, slate, timber, corrugated roofs Vapour barrier walls