Getting Epoxy Primer Over Body Filler Right Every Time

If you're wondering about the best way to spray epoxy primer over body filler, you've probably realized there are about a hundred different opinions on the internet. Some guys swear by putting the filler straight onto the bare metal, while others won't touch a piece of sandpaper until the whole panel is sealed in epoxy. The truth is, putting epoxy over your filler work is one of the smartest things you can do for the longevity of your paint job. It acts as a waterproof seal that keeps your hard work from bubbling up or rusting from the inside out a few years down the line. ...

May 9, 2026 · 7 min · Diederik Stephanie