You should not need to sand the epoxy. But if you do, I use 220 grit to knock off the nibs. Check the tech sheets for dry time, really depends on temp and how long it’s been applied.Click to see full answer. Subsequently, one may also ask, can you paint directly over epoxy primer?They recommend a sealer over the epoxy before the paint. They said that you can paint over the epoxy, but best results would be with a sealer.Similarly, can I wet sand epoxy primer? But most people will coat the epoxy with a urethane primer ( 2K ) and do the final blocking with that. The 2K could be sprayed on the epoxy with no sanding if doing a wet-on-wet application. Hereof, when can I paint over epoxy primer? The tech sheets for most Epoxy Primers recommend sanding and recoating with more Epoxy Primer after 7 days. Quote: The tech sheets for most Epoxy Primers recommend sanding and recoating with more Epoxy Primer after 7 days. Scuff it and shoot some 2K over it.Do you sand primer sealer?Primer-sealer is usually designed to be applied immediately before the base coat, and not sanded. In general, don’t sand with too fine of sand paper before painting. If the sanded surface looks glossy at all (sanded with 800/1000 and above) you wont get adequate adhesion and the paint will not stick.

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