We have low ceilings and living in the Northwest it can feel a little dreary. I was wondering what it would be like to open up our ceiling in the living room. We have a fairly open plan, but I don't think that would be a problem for this. I was wondering if you can simply remove the current ceiling and leave the rest open with the rafter exposed. I would like it to be all white. What I am wondering is, first is this possible, and what would a need to do with the bottom side of the roof. Would I need to apply some type of treatment to this? Would I need to sheetrock and insulate the roof area, or could I leave it as is? I know I would need some framing in between the living and dining area so that it was not all open. Is this a huger undertaking, expensive, and difficult to DIY?