● Woodworking · Review

West System 105 Epoxy Res in with 205 Fast Hardener Kit

Low viscosity penetrates into concrete pores, creates a mechanical bond deeper than contact-only adhesives

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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West System 105 Epoxy Res in with 205 Fast Hardener Kit
Best Structural Epoxy

West System 105 Epoxy Res in with 205 Fast Hardener Kit

West System

Low viscosity penetrates into concrete pores, creates a mechanical bond deeper than contact-only adhesives

  • Low viscosity, penetrates into concrete
  • Marine-grade waterproof
  • High tensile strength
  • Structural bonding applications

Pros

  • Low viscosity penetrates into concrete pores, creates a mechanical bond deeper than contact-only adhesives
  • Marine-grade waterproofing, handles basement and exterior applications with ground moisture
  • Structural application, load-bearing joints are with in its design envelope
  • Mixing kit allows controlling open time with different hardener choices

Cons

  • Requires precise 5:1 mixing ratio
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