8mm Membrane - Clear - Biokil Crown

8mm Membrane - Clear - Biokil CrownBiokil 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

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

1. Prepare Substrate: Ensure wall or floor surface is stable and free from sharp projections or loose materials.
2. Cut & Fit: Trim the membrane to size using a utility knife or shears, ensuring full coverage of the surface.
3. Fixing: Use appropriate fixing plugs with seals at 250mm centres. Seal around plug heads if required using mastic.
4. 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.