Sure but hit it with 400 grit as the paint needs something to stick to
If it has a matte finish it should be easy to paint over.
Yes. You can paint semi-gloss latex paint over flat latex paint. It is not advised to paint over any latex with any oil-based paint. Nor is it advised to try and paint over semi-gloss paint with any other finish without first de-glossing the finish and priming.
You cannot paint over slightly tacky latex paint with a water based polycyclic finish. You should always wait until the latex paint is thoroughly dry before painting over it.
You should apply at least two coats of clear finish over a stain. Be sure to put thin coats of the clear finish on, you do not want it to be too thick.
Coating your garage floor with epoxy seal paint will provide you with the best clear finish. For a better finish, coat your garage floor multiple times.
Yes You Can, This info came directly from Krylon about clear coating their Fusion Paint. Thank you for your inquiry with Krylon. While the Fusion is a hard, protective, durable finish on its own, the film is not impervious. Keep in mind, Fusion is still a paint coating and can be nicked, scratched, or damaged. Consistent friction or direct pressure with a sharp object will damage the film. Please allow the last coat of Fusion to dry for 7-10 days to reach the film's maximum hardness and cure time. If you would like to add a sacrificial clear coating over the Fusion, I would suggest using the Krylon Low Odor Clear Finish or the Minwax Polycrylic. Both of these clear coatings may be applied to a fully cured Fusion paint film. Please allow the last coat of Fusion to dry for at least 7-10 days before top coating. NOTE: Technically you are applying a clear finish that will take the brunt of daily wear and tear before the underlying paint film. The clear finish will not be any easier to touch up and recoat then just applying an additional coat of the Fusion paint. This is the reason we do not offer a clear finish in the Fusion Line. The clear finish will not be any more durable than the Fusion paint film; but may not show the wear as quickly because of the transparent nature of clear films.
If sand it you will sand all of the paint of not just the clear part.
That is not generally recommended.
Clear primer.
Melamine paint
You must rough up the old finish, use sandpaper. Then apply the heat resistant paint
Yes, acrylic lacquer can be applied over a 2 pack finish. Be aware, using a very fine finish could cause an adhesion problem.