the high gloss acrylic would bead up and not give you an even application over the oil based
You can just paint over the top as long as the existing surface is clean and lightly sanded to aid in the adhesion of the next coat.
Do you realize that you can get FLAT ACRYLIC PAINT. Flat paint refers to the gloss level. You may want Gloss, Satin, Lowsheen or Flat. Acrylic paint on the other hand refers to what the paint is based on or what binder is being used. Acrylic paint is also refered to as waterbased paint. You most likely are referring to putting flat acrylic over lowsheen or gloss acrylic. In answer to your question - as long as they are both acrylic than you will not have any problems. I am in this answer assuming that you are referring you house paints. If not than the same principle applies - acrylic over acrylic is fine. To keep acrylic from going glossy just don't polish it.
Yes.
It is never a good idea to paint anything high gloss without sanding first. You don't need to sand clear though the old paint, but the new paint needs something to hold onto. If there is nothing but a smooth, shiny surface, the new paint will probably run if the surface is not horizontal, and then chip and flake very early on. Always run a piece of sandpaper or a sanding block, 150 grit is good, over the surface. Why do something twice?
Can I paint semi gloss over flat paint? Thanks!Barbara Phillips
Yes, you can. You can always paint over with same paint.
High gloss Exterior Oil-Based Gloss Enamel over Quality Primer will give the best results on a cornice.
Yes, you can put chalk pastels over acrylic paint. After acrylic paint is dry, you can use soft pastels over the paint so it won't crack.
yes
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.
Yes, you can paint over XIM with any acrylic or alkyd paint. Read the instructions on the can for drying and recoat times.
You didn't say which meaning of the word you want to use. If you mean gloss as in a shine, here are a couple of sentences.That paint has a high gloss.I like a low gloss, or even matte, paint on furniture.If you mean gloss as in to skip over something, try these sentences.If you don't watch him, he'll gloss over something important in the meeting.Just gloss over that part because it's not important.If you mean gloss as in lip gloss, you could say "That color of lip gloss looks good on you."