You can make it flatter, but not totally flat by adding a bit of talcum powder. Very common technique in modelmaking.
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.
Latex paint with a 60 degree or better gloss.
I've done it without any ill effects. It just dulls the semi-gloss a little.
You can use interior Latex pearl paint on your bathroom wall. Pearl paint adds a special finish to the wall.
Latex and acrylic (both water-based paints) do come in a semi-gloss finish.
Yes, depending on the mix ratio, you will end up with an eggshell or satin finish.
Yes, but the finish will be somewhere around satin. You can only do this if the paints are of the same type, i.e. either both latex, or both enamel (alkyd). Make sure you mix them together very well, and continue to agitate while you're painting.Post edit: They may mix and go on alright, but interior and exterior paints are, however, formulated to have different properties. Exterior paint actually may not hold up as well indoors (Bob Vila). Most importantly, though, chemicals used in exterior paints outgas and are harmful for indoor use. Try some of the new low-VOC interior paints. They are much better for your health.
Many hotels that use paint use satin or semi-gloss latex paint in their interior applications.
Close to the same. Enamel just means that it's a hard finish. If you're painting a door, trim or anywhere that will be handled often and you must use a water based paint, an enamel is the way to go.
Sears Ultra Latex Interior Semi-Gloss Paint is a high quality paint for all interior surfaces, but is particularly useful on wood trim, or kitchen and bath areas where stain and milder resistance is important and you need a surface that is easy to wash without damaging the surface. It is guaranteed to cover in one coat and comes with a limited lifetime warranty.
You cannot polish fully cured interior acrylic latex paint, it does not set up well enough to be polished. It is not designed for this and doing so can ruin your finish.
Yes, just ensure that the surface is clean, grease free and dulled.