If its in your home, you can do whatever you want, If in a place of business or public area, code can be involved about mounting in a ceiling tile. I like to use chicken wire, or as some call it mechanics wire I believe it 14 gauge. Try to find something to tie the camera off too. It does help with weight issues but in case of fire or a roof leak and the tile gets wet , with no support it will come down and so will your camera. I usually get some larger washers on the hidden part of your cam mounting(in the ceiling) and wrap the wire a few times on the mounting hardware, sometimes you have to be creative but you can do it.