I went into the attic of my new house. I noticed the roll insulation installed had the paper side facing up (toward the attic). I’ve always heard the paper side of insulation should be facing toward the inside of a house, or toward the heated side if you will. What effect does this have?
My reason for asking is because I am going to install blown insulation in the near future so I can keep the house cooler at less of a cost from the utility company. One person said I need to flip the existing insulation so the paper is toward the heated side. What would happen if I did not? Does it make that big of a difference?