Hi, I'm putting in a bathroom in an exterior room that has an outdoor porch above it. The porch has a roof over it, but has open walls, so when it rains, the porch will still see a little bit of water. Below the porch there's a room that I'm putting a new bathroom in. I'm going now to put insulation in the ceiling joists, but I wasn't sure if I should use faced or unfaced. I think the porch is sealed relatively well, so I don't anticipate there will be much moisture there, but I want to make sure I do the right thing so I don't have a problem down the road. Any suggestions?? Thanks!