WEST SYSTEM Epoxy Resin - 1ltr

WEST SYSTEM 105 Epoxy Resin: The Reliable Bond Behind Every Strong Build

Ever glued up a boat hull or a laminated panel, only to worry the joint might let you down where it matters most? A weak or brittle bond can undo hours of careful work and leave you patching problems down the track. WEST SYSTEM 105 Epoxy Resin gives you the confidence to build once and build right. It wets out and bonds beautifully with timber, fibreglass and metal, curing to a high-strength solid with excellent moisture resistance.

This clear to pale yellow liquid resin is the foundation of the entire WEST SYSTEM 105 range. Mix it with the right hardener, and you get a dependable bond you can shape, sand and trust.

Key Features

• Low viscosity formula: The thin, clear to pale yellow resin flows easily into timber fibre, fibreglass and reinforcing fabrics, so you get thorough wet-out and a stronger bond.
• Excellent moisture resistance: Cures to a high-strength solid that stands up to damp conditions, making it a trusted choice for boat building and outdoor projects.
• No shrinkage after curing: The resin holds its shape as it sets, so your joints and coatings stay true without pulling or distorting.
• Solvent-free formulation: Made without volatile solvents, it won't shrink or off-gas the way many polyesters do, giving you a cleaner, more predictable result.
• Safer to work with: A relatively high flash point and no strong solvent odour make it more pleasant and safer to handle than polyester resins.
• Versatile bonding: Wets out and bonds with wood fibre, fibreglass, reinforcing fabrics and a variety of metals when mixed at the correct ratio.
• Fills and shapes: Mix with WEST SYSTEM fillers to bridge gaps and fill voids, then sand and shape the cured surface to suit your work.

Ideal For

• Boat builders bonding, coating and laminating hulls and fittings.
• Furniture makers and woodworkers after a strong, moisture-resistant glue-up.
• Fibreglass and reinforcing fabric layups that need thorough wet-out.
• Gap-filling and void-bridging repairs where a sandable, shapeable bond matters.

Specifications

• Type: Clear to pale yellow, low viscosity liquid epoxy resin.
• Role: Base resin for the WEST SYSTEM 105 system.
• Bonds with: Wood fibre, fibreglass, reinforcing fabrics and a variety of metals.
• Cured properties: High-strength solid with excellent moisture resistance and no shrinkage.
• Formulation: No volatile solvents, high flash point, no strong solvent odour.
• Mix ratio with Fast Hardener 205 or Slow Hardener 206: 5 parts resin to 1 part hardener.
• Mix ratio with Clear Hardener 207: 3 parts resin to 1 part hardener.

A quick tip: always measure your resin and hardener at the exact ratio for your chosen hardener, whether that's 5:1 with 205 or 206, or 3:1 with 207. Getting the ratio right is what gives you a full, reliable cure, so use accurate pumps or scales rather than guessing by eye. Mix thoroughly, scraping the sides and bottom of your pot, before you spread or bond.

Ready to build strong, lasting bonds you can rely on? Add WEST SYSTEM 105 Epoxy Resin to your cart today and craft with confidence.