Will epoxy primer adhere to Internal Frame Coating? I used the internal frame coating, I’m pleased with the coverage, the car is on a rotiserre and I rotated 45 deg and applied a light coat each time. I then check coverage with a bore-scope and saw complete coverage. I have to order more to do the rockers & “A” pillars. I will keep a eye on areas I applied it to over the next few years, I hope it lasts as well as it applied.