West System
West System 404 High Density Filler
Professional-grade marine product — trusted by boaters across the UK.
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West System 404 High Density Filler is an essential marine product designed for creating strong and durable epoxy repairs in boats and other marine applications. This filler is easy to mix, providing a thick, no-sag consistency ideal for vertical and overhead surfaces. Its hig...
West System 404 High Density Filler is an essential marine product designed for creating strong and durable epoxy repairs in boats and other marine applications. This filler is easy to mix, providing a thick, no-sag consistency ideal for vertical and overhead surfaces. Its high-density formulation enhances the strength and impact resistance of epoxy, making it perfect for filling gouges or voids in wood, fiberglass, and more. Suitable for both professionals and DIY enthusiasts, it ensures long-lasting repairs in harsh marine environments.
Description
West System 404 High Density Filler is a versatile epoxy additive designed specifically for marine applications where high strength and durability are paramount. Composed of finely milled glass beads, this filler is ideal for structural applications, creating a robust, impact-resistant bond for repairing, fairing, and filling. Key features of West System 404 include its excellent thixotropic properties, which prevent sagging or running during application, making it perfect for vertical surfaces and overhead repairs. The filler can be mixed with epoxy resin to achieve a lightweight, strong, and easily sandable material that adheres well to a variety of surfaces including wood, fiberglass, and metal. Typical use cases for West System 404 High Density Filler include filling voids and holes in fiberglass substrates, constructing strong, lightweight fillets, and fairing surfaces for a smooth finish before painting or gel coating. Its formulation provides enhanced resistance to water and environmental degradation, ensuring longevity and integrity in harsh marine conditions. Practical benefits for marine users encompass faster repair times and reduced labor costs, thanks to its ease of use and quick-setting nature. The finished product offers superior strength, making it ideal for both professional boat builders and DIY enthusiasts seeking reliable solutions for boat maintenance and repair. With West System 404, marine users can trust in a product engineered for performance, durability, and efficiency on the water.
Specification
| Property | Specification |
|---|---|
| Type | High Density Filler |
| Color | Light Gray |
| Mix Ratio | 1:1 by weight or volume |
| Density | 0.6 - 0.8 g/cm³ |
| Working Time | Approximately 20-30 minutes at 72°F (22°C) |
| Cure Time | Approximately 6-8 hours at 72°F (22°C) |
| Sandability | Good |
| Applications | Filling, fairing, and repairing |
Why buy from Marine Chandlery?
- UK marine specialists, based in North Shields
- Next-day UK delivery available
- Same-day collection from our store
- Expert advice before and after purchase
- Carefully selected marine-grade products
- Secure checkout & trusted payment options
