8mm Membrane - Clear - Biokil Crown

Biokil Crown 8mm Membrane – Clear. High-Capacity Cavity Drainage Membrane for Below-Ground Waterproofing. Biokil Crown 8mm Membrane – Clear is a robust, high-capacity cavity drainage membrane designed for internal waterproofing applications in basements, retaining walls, and other below-ground structures. Manufactured from clear high-density polyethylene (HDPE), the membrane features 8mm studs that create an air gap between the substrate and internal finishes, allowing water to drain freely into a perimeter drainage system or sump. The clear construction allows for visual inspection of the substrate during installation, making it ideal for damp-proofing and structural waterproofing.. Key Features & Benefits. 8mm Stud Height: Provides excellent drainage capacity for high-moisture or below-ground environments.. Clear HDPE Construction: Enables visibility of substrate for inspection and detailing during installation.. Moisture Isolation: Prevents moisture and salt transfer from masonry to internal finishes.. Compatible with Systems: Works with sump pumps, perimeter channels, and sealing accessories for full cavity drain systems.. Durable & Chemically Resistant: Resistant to alkalis, acids, bacteria, and fungi – ideal for long-term installations.. Product Details. Material: High-Density Polyethylene (HDPE). Stud Height: 8mm. Thickness: Approx. 0.6–0.7mm. Colour: Clear. Roll Size: Typically 2m x 20m (40m² per roll). Fixing Centres: 250mm with Biokil Crown Brick Plugs or Newton MultiPlugs. SKU: BC8CLR. Application Instructions. Prepare Substrate: Ensure wall or floor surface is stable and free from sharp projections or loose materials.. Cut & Fit: Trim the membrane to size using a utility knife or shears, ensuring full coverage of the surface.. Fixing: Use appropriate fixing plugs with seals at 250mm centres. Seal around plug heads if required using mastic.. Sealing & Finishing: Overlap sheets by at least one stud column and seal with jointing tape or overtape. Connect to drainage or sump system as specified.. Limitations. Not suitable as a standalone waterproofing system without drainage provision.. Internal finishes should not be applied directly to the membrane without an appropriate air gap or lining system.. Health & Safety. Wear appropriate PPE during handling and installation. Use caution when cutting membrane edges. Refer to the Safety Data Sheet (SDS) for full safety information.