Everbuild Sika Everflex 450 Silicone Sealant, Grey, 300ml
Professional-grade silicone sealant for waterproofing, glazing, and weather sealing. Fast-curing & BS5889 compliant. 300ml.
The Everbuild Sika Everflex® 450 Builders Silicone Sealant is a premium low modulus, oxime cure RTV silicone sealant designed for professional and DIY use. It adheres effortlessly to both porous and non-porous surfaces without requiring a primer, making it versatile and convenient. Conforming to BS5889, this high-viscosity sealant offers excellent tooling properties and cures quickly to form a permanently flexible, waterproof, and high-strength seal.
One of its standout features is its low dirt pick-up, ensuring a cleaner appearance over time compared to conventional sealants. Once cured, it forms a tight, rubber-like seal that remains flexible, accommodating movement without cracking or losing adhesion. This makes it ideal for applications where durability and longevity are critical.
Applications
- Perimeter pointing: Suitable for use around PVCu, wood, and other window frames, both internally and externally.
- Expansion joint sealing: Perfect for weather sealing and joint sealing on pre-formed panels.
- Glazing and metal sealing: Works well for sealing soft metals like lead, copper, and zinc, as well as glass-to-glass and glass-to-aluminium applications.
- Roof weather sealing: Provides a reliable waterproof barrier for roofing applications.
- Draught proofing: Effective for sealing gaps to improve energy efficiency and reduce draughts, including over existing sealant.
Each tube contains 300ml of grey silicone sealant, ensuring ample coverage for multiple jobs.
- Perimeter sealing around PVCu & wood window frames
- Expansion joint sealing
- Sealing pre-formed panels
- Glazing (glass-to-glass, glass-to-aluminium)
- Material: Low modulus oxime cure RTV silicone
- Curing: Fast curing with permanent flexibility
- Finish: Waterproof, high-strength seal
- Dirt Pick-Up: Extremely low
- Conformity: BS5889 compliant
- Colour: Grey
- Volume: 300ml
- Weight: 368g
Documents
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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