Bitumen Repair Mastic Den Braven Den Bit-U

Den Braven Den Bit-U is a ready-to-use plastic bitumen repair mastic in the form of a paste based on organic solvents, highly modified with synthetic rubber. The compound contains specialized reinforcing fibers and chemical additives that enable highly effective application on both dry and damp mineral or bitumen substrates. This mastic is designed for roof repair works, filling local defects, cracks, gaps, and blisters in old roofing felt, as well as creating flexible, seamless waterproofing coatings for underground sections of buildings and foundations.

The product is intended exclusively for outdoor applications. Due to its thick paste-like consistency, the formula is highly suitable for spot repairs, crack bridging, filling gaps, and surface leveling. It is strictly forbidden to use this compound in direct contact with expanded polystyrene (EPS) and tarred felt.

Design and Performance Features:

• Reinforcing Fibers: The integration of structural fibers allows the compound to withstand and compensate for significant substrate movements and deformations.
• Permanent Plasticity: Once applied, the mastic retains permanent plasticity, preventing cracking or de-bonding from the treated surface.
• Waterproofing and Chemical Resistance: Delivers complete resistance to water penetration, weather exposure, and aggressive chemical compounds naturally found in soil.
• Enhanced Adhesion: Special chemical additives activate during application to guarantee a highly secure bond even on slightly damp bases.

Technical Specifications:

• Base: Asphalt-rubber solvent-based compound
• Packaging weight: 1 kg
• Packaging type: Plastic bucket
• Color: Black
• Dust-dry time: Approx. 3–4 hours (at +23°C)
• Full drying time: 3–4 days
• Application temperature range: From +5°C to +35°C
• Layer thickness for defect repair: 2–5 mm
• Layer thickness for seamless sealing: 2–3 mm (application of 2 thin layers recommended)
• Number of layers for waterproofing shell: 2–3 layers
• Recommended tools: Steel trowel, spatula
• Storage conditions: In original packaging at temperatures between +5°C and +30°C
• Stacking limitation: Maximum 3 layers during storage and loading
• Shelf life: 12 months from the date of manufacture

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