How to paint concrete walls.? I like in an apartment next to concrete walls and I want...

I like in an apartment next to concrete walls and I want to repaint my bedroom. The walls already have at least one coat of paint on them. What do I obligation to do to paint (primer, how many coats, type of paint, etc.).
Color to paint a home study/office.?
Answers:    If the existing paint is in right shape, all you really need to do is verbs well and throw some paint on.

For cleaning, use TSP (Tri-Sodium Phosphate, any store with a clad paint department will have it) mixed in river, strongest solution listed in the directions. Rinse -- you must rinse after TSP. Let the walls dry completely.

As for the paint, look for something labeled 100% acrylic latex surrounded by your choice of finish. I would stay away from flat -- more gloss gives you more durability. More interpret also shows imperfections in the wall more, so customarily I would stay away from gloss or semi-gloss and settle into a satin or eggshell finish. Since concrete walls have a texture to them, you can do the semi-gloss in need it looking bad if you like.

You will probably stipulation two coats for this one. The texture of concrete makes it difficult to cover all of the little voids surrounded by one coat unless you put it on much thicker than it should be.