I would use a fine grit like 220 or so.
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.
Latex primer is undoubtedly the quickest drying paint.
Many hotels that use paint use satin or semi-gloss latex paint in their interior applications.
you can paint over latex paint with latex enamel.
What do you mean? Yes, paint on wood trim is typically latex these days. Some older homes may still have alkyd (oil), though. To find out for sure, put a little nail polish remover on a cotton swab and rub it on the paint in an inconspicuous location. It it gets soft and starts to come off, it's latex. Either way, sand it lightly and recoat with the same type of paint and you're good. If you're asking about bare wood, DON'T USE LATEX! The water will swell the grain of the wood. Use an oil primer that is made to take latex topcoats.
Either oil or latex primer can be used over interior latex paint.
You can use interior Latex pearl paint on your bathroom wall. Pearl paint adds a special finish to the wall.
Acrylic and Latex
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.
Latex primer is undoubtedly the quickest drying paint.
Many hotels that use paint use satin or semi-gloss latex paint in their interior applications.
Silken Touch Interior Latex by Porter make stain-resistant paint.
you can paint over latex paint with latex enamel.
What do you mean? Yes, paint on wood trim is typically latex these days. Some older homes may still have alkyd (oil), though. To find out for sure, put a little nail polish remover on a cotton swab and rub it on the paint in an inconspicuous location. It it gets soft and starts to come off, it's latex. Either way, sand it lightly and recoat with the same type of paint and you're good. If you're asking about bare wood, DON'T USE LATEX! The water will swell the grain of the wood. Use an oil primer that is made to take latex topcoats.
Use a citrus based stripper that will cling to the wall and allow it to work overnight. However, an easier option would be to paint directly over the exterior paint with a good quality interior latex paint.
Hello? Interior. I am guessing that your block fence is exterior. The answer is no. You can do it if you want to paint it again before it's time
If it is flat paint, you can apply the texture without any additional preparation. If it is a gloss or semigloss, you will need to rough up the surface with sandpaper first.