Dupont Nason paints

Thanks

Thankyou for your time.

Good point. The Nason epoxy tech sheet doesn't address the issue of time windows at all. The premium Dupont epoxy tech sheet mentions only that sanding is required after 24 hours - no reference to any re-application of another coat of epoxy. This is unlike the two PPG epoxies (economy OMNI and premium DPLF) that specifically recommend sanding and re-application after the appropriate time window. I haven't used either of the DuPont epoxies but have both of the PPG ones. I think why you hear a lot about time windows and re-application in the forum is because a lot here use the PPG products. Frank Stalfire is a DuPont factory rep who posts here every once in a while. Perhaps if he sees this thread, he will provide some input. Lacking additional information, I'd go by the Nason tech sheet but I would recommend at least a scuffing of the epoxy prior to applying your topcoat, as you should do with any cured film prior to adding anything on top of it. At least that way you would get the benefit of a better mechanical bond, if not a chemical one.

Rod