I live in an old home that is like a sauna on the 2nd floor. I have two bedrooms that I can't afford to get AC units in. I was told by an energy inspector that insulation should help. I can't afford insulating my whole house with blown in insulation. I have a big attic. Will adding insulation bats to my attic floor help keep the attic heat from penetrating the rooms? I have tons of batt insulation lying around that i could layer on the attic floor?