Biokil Crown Premium Multi-Purpose Construction Silicone Sealant. High-Performance, Neutral Cure Silicone for Interior & Exterior Sealing Applications. Biokil Crown Premium Multi-Purpose Construction Silicone Sealant is a versatile, high-performance sealant formulated for a wide range of building and construction applications. With its neutral curing system, it is suitable for use on both porous and non-porous surfaces, providing excellent adhesion without primer. This premium-grade silicone remains permanently flexible and is ideal for sealing joints in windows, doors, façades, cladding, and general construction joints.. Key Features & Benefits. Neutral Cure System: Low-odour and non-corrosive — safe on sensitive substrates like metals and concrete.. Excellent Adhesion: Bonds to most common building materials including uPVC, wood, glass, stone, brick, and concrete.. Weather & UV Resistant: Suitable for interior and exterior applications with long-term durability.. Permanently Flexible: Accommodates movement and maintains a tight, water-resistant seal.. Easy to Apply: Smooth tooling and fast skin formation ensure a clean, professional finish.. Product Details. Technology: Neutral cure silicone. Colour: Available in multiple colours including white, clear, and grey. Packaging: 310ml cartridge. Skin Time: Approx. 10–20 minutes. Cure Rate: ~2–3mm per 24 hours. Movement Capability: ±25%. Application: Standard caulking gun. Typical Applications. Sealing around window and door frames. Expansion and movement joints. Weatherproofing façades and cladding. Interior sealing in kitchens, bathrooms, and utility areas. Limitations. Not suitable for aquariums or permanent water immersion.. Do not use on bituminous or natural rubber surfaces.. Health & Safety. Use in well-ventilated areas. Wear suitable PPE including gloves and eye protection during application. Refer to the Safety Data Sheet (SDS) for full guidance.
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