WEST SYSTEM Epoxy Resin - 500ml

WEST SYSTEM 105 Epoxy Resin: The Backbone of Every Build You Can Count On

Picture the moment you flood a fibreglass layup or seal a timber hull, then wait to see if the resin truly soaks in and grips. Patchy wet-out and dry spots leave weak points that surface much later, right when you need the bond most. WEST SYSTEM 105 Epoxy Resin takes that worry off the bench. This low viscosity liquid flows deep into the fibres, wetting out timber, fibreglass and metal for a tough, moisture-resistant bond you can build your project around.

It sits at the heart of the entire WEST SYSTEM 105 range. Choose your hardener, mix to ratio, and you have a versatile resin ready to coat, bond, fill and shape.

Key Features

• Low viscosity flow: The thin, clear to pale yellow resin penetrates timber fibre, fibreglass and reinforcing fabrics, giving you thorough wet-out and a stronger hold.
• High-strength, moisture-resistant cure: Sets into a solid that shrugs off damp conditions, so it stands up to boat work and outdoor builds alike.
• No shrinkage: The resin keeps its shape as it cures, leaving your joints and coatings flat, true and free of distortion.
• Solvent-free formulation: Made without volatile solvents, so it cures cleanly and predictably where many polyesters fall short.
• Safer to handle: A relatively high flash point and no strong solvent odour make working sessions more comfortable and less hazardous than polyester resins.
• Fills and shapes: Blend with WEST SYSTEM fillers to bridge gaps and pack voids, then sand and shape the cured surface to a clean finish.

Ideal For

• Boat builders coating, bonding and laminating hulls and fittings.
• Furniture makers and woodworkers after a strong, moisture-resistant glue-up.
• Fibreglass and reinforcing fabric layups that demand deep, even wet-out.
• Void-filling and gap-bridging repairs where you need a sandable, shapeable result.

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.
• Cure range: Cures across a wide range of temperatures with WEST SYSTEM hardeners.
• 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: match your hardener to the job before you start. Reach for 205 when you want a fast cure in cooler conditions, 206 when you need extra working time on larger jobs, and 207 when you want a clear finish for coating over timber. Whichever you choose, measure to the exact ratio with accurate pumps or scales, then mix thoroughly and scrape the sides and bottom of your pot for a full, reliable cure.

Ready to lay down bonds you can build on with total confidence? Add WEST SYSTEM 105 Epoxy Resin to your cart today and craft with confidence.