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.
The ingredient in glossy paint is acrylic. You cannot remove that ingredient.
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, just ensure that the surface is clean, grease free and dulled.
Yes, you can use acrylic paint on wooden doors. If there is any peeling paint on the door, you can remove it with sandpaper or a scraper. Also be sure to use exterior acrylic paint if you are painting an exterior door.
If you want to call an equal amount of semi-gloss and additive then yes. Paint starts out as a gloss and is made flat by adding cheaper pigments and flatteners to the mix so that the paint doesn't have as high as a sheen. There's nothing that will remove or offset those flatteners other than adding higher gloss paint to the existing paint.
The ingredient in glossy paint is acrylic. You cannot remove that ingredient.
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, just ensure that the surface is clean, grease free and dulled.
Acrylic, like enamel paint, can be matt, gloss, or satin finish. Please see the related link below.
the high gloss acrylic would bead up and not give you an even application over the oil based
Yes, you can use acrylic paint on wooden doors. If there is any peeling paint on the door, you can remove it with sandpaper or a scraper. Also be sure to use exterior acrylic paint if you are painting an exterior door.
Latex and acrylic (both water-based paints) do come in a semi-gloss finish.
If you want to call an equal amount of semi-gloss and additive then yes. Paint starts out as a gloss and is made flat by adding cheaper pigments and flatteners to the mix so that the paint doesn't have as high as a sheen. There's nothing that will remove or offset those flatteners other than adding higher gloss paint to the existing paint.
future floor polish or krylon spray gloss coat
Many other companies make a a comparable paint. Ask for there top or second line of high gloss acrylic and you should be satisfied.
Well I learned from experience NOT to use house paint, I would say Acrylic paint or spray paint. Make sure to use gloss!
If the paint you are going to coat is completely dried / and cured, and are of the same "sheen" exp. semi-gloss, you should have no problem with the finished job.