Everbuild Everflex 450 Builder's Silicone Sealant, Clear, 300ml
Everbuild Everflex 450 silicone sealant: waterproof, flexible, and fast-curing for windows, roofs & metals. BS5889 compliant.
The Everbuild Everflex 450 Builder's Silicone Sealant is a high-performance, low modulus, oxime cure RTV silicone sealant designed for both porous and non-porous surfaces, eliminating the need for priming. It adheres seamlessly to various substrates while providing an airtight and waterproof seal. This product conforms to BS5889 standards, ensuring quality and reliability. Its high viscosity formula allows for effortless tooling and smooth application, curing quickly to form a durable, flexible seal that resists dirt pick-up.
Key Features:
- Permanently flexible – Maintains elasticity to accommodate movement and prevent cracking.
- Waterproof & airtight – Creates a long-lasting barrier against water and draughts.
- Faster curing – Reduces downtime compared to conventional low mod sealants.
- Wide adhesion range – Bonds securely to PVCu, wood, glass, metals (lead, copper, zinc), and pre-formed panels.
Applications: This versatile sealant is perfect for perimeter sealing around window frames (PVCu, wood), expansion joints, weatherproofing, glazing, and draught-proofing. It is also ideal for roof sealing and repair work over existing sealants.
Need larger quantities? Need additional quantities? Get in touch and we'll arrange it for you.
- Perimeter sealing (internal & external)
- Window frames (PVCu, wood, etc.)
- Expansion joints
- Glazing (glass-to-glass, glass-to-aluminium)
- Ask Claude, ChatGPT or Perplexity to find the right tool, with our live prices and stock.
- Get a ready-made basket: one link puts everything in your basket here.
- You always pay securely here: your assistant never sees your card.
- **Type:** Low modulus, oxime cure RTV silicone
- **Colour:** Clear
- **Volume:** 300ml
- **Viscosity:** High (excellent tooling properties)
- **Cure Time:** Faster than conventional low mod sealants
- **Compliance:** BS5889
- **Weight:** 364g
- **Features:** Permanently flexible, waterproof, low dirt pick-up
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.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website employs advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your basket and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll request you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
Similar Products
You may like
