What Should Be Used to Thin Two-Part Epoxy Resin?
There are two primary ways to thin two-part epoxy. The first involves simply heating it, which improves its flow. The other is to add a solvent, and if you do this there are several options. A question to ask prior to thinning with a solvent is if you really need to. Often an epoxy, when used as a coating, will penetrate wood or concrete sufficiently without any dilution, but people often have the impression that reduced viscosity is needed for the best results. The other potential problem is losing the benefits you want from epoxy for in the first place.
