My home was built in 1950 and has a flat roof. I am redoing part of the garage conversion, namely the laundry closet which was quite stupidly constructed, to provide a lot more storage and efficient use of the room we have. I decided I would also be able to put better lighting in and run some ethernet cabling through the house while I am at it, so I pulled down part of the ceiling as well. The previous DIYer used fiberglass sheets, and from what I read this is not a good choice for this application. BUT I am unsure what would be best... I have only opened up half the ceiling, but it would not be much work to open the rest if that would allow me to properly insulate this area. Another point of confusion is if I should have any kind of moisture barrier in there as well?? I attached some pics, please ignore the obvious electrical code violations. I will be remedying those as well!