Paint Over Old Two Part Epoxy?

[HealeyRick]

When we built our house 35 years ago, I painted the garage floor with Sears two-part epoxy paint. It's held up well, but is wearing away in spots, has some oil stains, etc. But it's still holding tight with no flaking. I'd prefer not to grind all the old stuff off if possible and don't really want to go to a new full epoxy floor. I was wondering if I could clean and scuff the present floor and repaint with oil-based floor paint? It's a working garage, not that pretty, so aesthetics aren't all that important.

 

[bluedog225]

I think so. People clean and scuff and paint over old epoxy all the time in the boating world.

 

[Shea]

When we built our house 35 years ago, I painted the garage floor with Sears two-part epoxy paint. It's held up well, but is wearing away in spots, has some oil stains, etc. But it's still holding tight with no flaking. I'd prefer not to grind all the old stuff off if possible and don't really want to go to a new full epoxy floor. I was wondering if I could clean and scuff the present floor and repaint with oil-based floor paint? It's a working garage, not that pretty, so aesthetics aren't all that important.

Run a scraper over the entire floor to ensure you get all loose edges of paint. This can expose areas where the paint looks sound but peels up fairly easily. Clean and decrease the entire floor afterward. After it has dried, sand the surface with 80-grit sandpaper including the spots of bare concrete. This will provide a mechanical profile for the oil-based paint to adhere to.

 

[Armorpoxy]

Agree, if your current coating is well adhered but just tired, give it a light prep, and recoat. Note that any bare concrete should be spot primed or you could end up having those areas show due to different absorbsion rates of the surface. Our 100% solids Armorclad with Topcoat would be a great solution for this, or a coat of or SPGX one part Polyurea.

 

[ColorMeOrange]

Also agreed. Good rep measures are the most important thing. If its done well some epoxy bonds will virtually last forever. Providing there is minimal to no UV exposure.