Filler over filler?

[jcmeyer5]

Working on a door. Used Everglass over some repair work. Can I apply a conventional filler directly to the fiberglass filler? I’ve sanded to 80 grit. I know I can epoxy prime it again, but I’d rather not unless I need to. TDS says 40-80 grit for my filler (Evercoat Z-Grip), so I think I’m okay. Thought?

 

[texasking]

The only reason you would need epoxy in between coats would be large areas of bare metal.

 

[jcmeyer5]

Oh yeah. Definitely epoxy on bare metal before filler. I just have some low spots in my filler I want to fix.