How the WEST SYSTEM Two-Part Epoxy System Works and How to Choose the Right One

Updated

WEST SYSTEM epoxy is a two-part system: a resin and a hardener that you mix together before use. You choose a resin/hardener combination based on the job—boat building, boat repair, home repair, or restoration—and the site's "Select Your System" and "Find A Product" tools help match a product to your project. The system is built so you can tailor the epoxy to your exact needs without losing performance.

What "two-part" means in practice

The resin and hardener are supplied separately and only become an epoxy when combined. WEST SYSTEM describes its two-part systems as developed for long-lasting repairs to high-performance composites. The company's stated design goal is a balance of physical and mechanical properties—arrived at through chemistry, rigorous testing, shop work, and direct experience—so that changing the mix to suit a job doesn't sacrifice performance.

For example, a reader repairing soft wood on a boat and a reader bonding a composite part are both working with the same resin/hardener logic but may need different products from the range. That is the tailoring the system is meant to allow.

How to choose the right product for your project

  1. Define the job first. Decide whether you are building, repairing, restoring, or doing household repair. The site frames its products around these uses.
  2. Use the selection tools. The homepage offers "Select Your System" and "Find A Product" entry points. Start there rather than guessing from product names.
  3. Check the product page for the specific resin/hardener pairing. The site presents products such as 105 Epoxy Resin and its hardeners; confirm the combination and intended use on the product page before buying.
  4. Check current pricing separately. WEST SYSTEM publishes a Price List page; use it for current prices rather than assuming costs from general descriptions.
  5. Use the how-to library for technique. The site's video library and its biannual EPOXYWORKS publication cover projects, guidelines, and safety information—useful for confirming mixing and application steps for your chosen system.

What to verify before you commit

  • The product is intended for your application (marine vs. general repair).
  • The resin and hardener you plan to use are listed together as a system.
  • Safety and handling guidance for your product, available through the site's resources.

Where the brand's track record fits

WEST SYSTEM Epoxy was created in 1969 by the Gougeon Brothers, sailors and builders, and the site states that as of 2025 Gougeon Brothers, Inc. operates as part of the PRO-SET Formulated Resin Systems portfolio. The site also highlights newer products, including a Wood Rot Repair Epoxy and kit aimed at repair rather than replacement. This history is context for reliability claims; the practical decision still rests on matching a specific product to your specific job.

Common sticking points

  • Treating all products as interchangeable. The system's premise is tailoring; confirm the resin/hardener pairing for your task instead of assuming one mix covers everything.
  • Skipping the selection tool. "Select Your System" and "Find A Product" exist to narrow the range—use them before comparing individual products.
  • Assuming price or access details. The site links to a Price List; check it directly rather than inferring cost or availability from product descriptions.