520 Slow Marine Hardener
$18.89$141.74 Select options

520 Slow Marine Hardener


Use 520 Slow Hardener when you are working on a large lamination project. The slow gel time and cost effective pricing will make you a happy boat builder. Only use this product at a 5:1 by volume mix ratio with the Marine Epoxy Traditional Resin.



  • Great for laminating wooden FRP construction boat hulls or other projects
  • Can be used with our fillers and for gluing, bonding and filleting
  • Cost effective laminating hardener

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