When your project requires more time for careful positioning, laminating, or bonding, the WEST SYSTEM 206 Slow Hardener is the perfect solution. Specifically formulated for use with WEST SYSTEM 105 Epoxy Resin, this hardener offers a longer pot life than the fast hardener, allowing you to complete larger or more detailed repairs without rushing.

Its low-viscosity formula wets out fiberglass fabrics efficiently, penetrates wood surfaces effectively, and creates a high-strength, rigid, moisture-resistant bond suitable for demanding marine environments. Whether you’re repairing a fiberglass hull, laminating wooden structures, bonding composite materials, or applying a protective epoxy coating, 206 Slow Hardener provides consistent and reliable performance.

The 206 B-Pack (1kg) is an excellent choice for boat builders, yacht maintenance professionals, shipyards, and serious DIY users who regularly work with epoxy systems.

Important: 206 Slow Hardener must be mixed exclusively with WEST SYSTEM 105 Epoxy Resin at the recommended 5:1 resin-to-hardener ratio by volume. It is not intended for clear coating or bright-finish applications.

Key Features

• Premium slow-curing epoxy hardener
• Designed for use with WEST SYSTEM 105 Epoxy Resin
• Extended working time for larger or more complex projects
• Low viscosity for excellent wet-out and penetration
• Produces a rigid, high-strength structural bond
• Outstanding moisture and water resistance
• Excellent bonding and barrier coating performance
• Ideal for warm working conditions
• Suitable for marine, industrial and composite construction
• Professional-grade reliability trusted worldwide

Typical Applications

The WEST SYSTEM 206 Slow Hardener is ideal for:

• Yacht and boat repairs
• Fiberglass laminating
• Wooden boat construction
• Structural bonding
• Composite fabrication
• Marine maintenance
• Barrier coating applications
• Timber bonding
• Workshop and industrial repairs
• General epoxy construction projects

Working & Cure Times (Approximate)

At 22–25°C:

• Pot Life (100g mix): 20–30 minutes
• Working Time (thin film): 90–110 minutes
• Solid Cure: Approximately 9–15 hours
• Minimum Recommended Application Temperature: 16°C

Higher temperatures and larger mixed volumes will accelerate curing.

Why Choose WEST SYSTEM 206 Slow Hardener?

Unlike fast-curing hardeners, the 206 Slow Hardener gives you valuable extra working time to position fiberglass fabrics, assemble large components, eliminate air bubbles, and achieve a cleaner finish. This makes it especially suitable for larger repairs and projects carried out in warm climates where standard epoxy systems cure more quickly.

Once cured, the epoxy system forms an exceptionally strong and moisture-resistant bond capable of withstanding the harsh conditions found in marine environments.

Technical Specifications

Why Buy from Cavo Yachting?

At Cavo Yachting, we supply genuine WEST SYSTEM® epoxy products trusted by professional boat builders, repair yards, and yacht owners worldwide. Whether you’re carrying out a structural repair, building a new project, or maintaining your vessel, you’ll find premium marine materials backed by expert support and fast delivery.