The ideal solution is to have the ceiling done by professionals who respray it.Such a company usually restores acoustical ceiling tiles incase you want to do a search.Do-it-yourself spraying is an alternative-use the same spray paint sold for touching-up ceiling tiles.I have rolled ceilings,however,if the ceiling has ever been wet or if you try to go back over a painted area,the texture may end up on the roller.

The best way is to spray the ceiling and you should have a proffessional painter do this for you. Once a textured ceiling has been painted you will then be able to roll it as the texture will held down with paint and will not come off easily.