Everbuild Sika Everflex 450 Silicone Sealant, Buff, 300ml
Professional-grade Everbuild 450 silicone sealant for waterproof, flexible seals on PVCu, metal & glass. BS5889 certified.
The Everbuild Sika Everflex 450 Builders Silicone Sealant is a premium, low modulus, oxime-cure RTV silicone sealant designed for high-performance sealing applications. It adheres effortlessly to both porous and non-porous surfaces without requiring a primer, ensuring quick and efficient application.
This high-viscosity silicone sealant offers excellent tooling properties, allowing for smooth application and a professional finish. It cures rapidly to form a permanent, flexible, and waterproof seal that maintains its integrity over time. Certified to BS5889, it provides a reliable and durable solution for a variety of sealing challenges.
Key Features
- Permanently Flexible: Retains elasticity, forming a tight, rubber-like seal that resists cracking and deformation.
- Fast Curing: Sets quicker than conventional low modulus sealants, reducing downtime.
- Low Dirt Pick-Up: Stays cleaner for longer, maintaining aesthetics in visible applications.
- Waterproof & Soundproof: Creates an effective moisture and draught barrier while dampening sound transmission.
Applications
Ideal for perimeter sealing around PVCu, wood, and other window frames, as well as for bonding PVCu and plastic trims. Perfect for expansion joints, weather sealing, and joining pre-formed panels. Suitable for sealing soft metals (lead, copper, zinc), general glazing, roof weatherproofing, and repairs over existing sealants.
- Contents: 1 × 300ml cartridge in buff colour.
- Perimeter sealing (internal/external) for PVCu/wood window frames
- Bonding PVCu and plastic trims
- Expansion joint sealing
- Weather sealing for roofs and panels
- Material: Low modulus oxime-cure RTV silicone
- Standard: Conforms to BS5889
- Cure Type: Oxime
- Viscosity: High
- Colour: Buff
- Weight: 377g
- Volume: 300ml
- Features: Primerless adhesion, waterproof, flexible
- Dirt Pick-Up: Extremely low
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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