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The EPS foam melted when installing FCS X-2. What did I do wrong?

In summertime heat (80 degrees ) the epoxy resin will tend to exotherm in deep holes as in FCS X-2 plug holes and ding repairs. FCS fusion, FCS II, and Futures are a tight fit and use very little resin so no worries there.

We recommend pouring only about a 1/2 ounce of epoxy into a hole at a time then waiting about an hour to fill up the rest of the hole. This will stop the epoxy from exotherming and melting EPS.