All epoxy resins and all epoxy resin hardeners have a shelf-life. The shelf life of the epoxy resin itself tends to be quite long (2-3 years) but the hardeners are more sensitive and should really be used within 1 year.Click to see full answer. Herein, does epoxy resin expire?Yes, of course all epoxy resin and hardeners have shelf lives. However, the shelf-life of these products tends to be long, usually a year or more depending on what it is. The hardeners for epoxy resins are the more concerning (though still long-lived) materials.Also, does resin have a shelf life? WEST SYSTEM resins and hardeners do no have a strict shelf life. Certain changes may make them less effective for some jobs, but the resin and hardener will still be reactive. The “expiration dates” on our containers are 2 years from the date of manufacturer, but actual shelf life is typically far longer. Herein, how long can you keep epoxy resin? Shelf Life & Storage. Epoxy resin and hardener formulations have a long shelf life compared to many polymers. The minimum shelf life for the standard INF and LAM products is 3 years for resins and 2 years for hardeners (with the exception of LAM-251-HT).How do you know when epoxy is bad?If it’s hardened it’s no good. Other than that, the bottle might have a “best by” date on it someplace. But unless you’re gluing something that needs to withstand a lot of stress, if the resin and hardener are still liquid, you ought to be good to go.
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