Possible Duplicate: Mezzuzahs- putting them up, and saying brachot… When do you place the Mezuzah? 30 days after beginning rental or moving in?
Should one put a mezuzah on a doorway that is shared with a non-Jewish (or a Jewish-but-non-mezuzah-putting) neighbor? If yes, should/must one ask their permission first? Should/must one tell them ...
Is there an "issur" regarding not putting up a mezuzzah? Is there such thing as having 30 days until the issue kicks in? Also, can you say the bracha each time you put one up? Or, if two different ...
What prayer do you recite when posting a mezuzah?