Faced or Unfaced Mineral Wool Insulation?
I just located another brand of mineral wool batt that is available foil faced. Roxul is only available unfaced. So it's back to my attic in greater Boston that has no insulation. What is the best type to use in this situation? Also, I noticed that there is BX wiring running in some areas on the attic floor which provides electricity to old ceiling fixtures downstairs. There are no electrical boxes in the attic, the cable just goes thru the attic flooring. Do I have to keep this insulation 3 inches ? away from this wiring when I insulate? Would it be better to use unfaced batts in these areas vs foil faced? Thanks