We have a 1908 House that was recently remodeled. A recent energy audit recommended more attic insulation. Currently there is a drywall ceiling in the house that is about one foot lower than the previous someone delapidated plaster ceiling. The remodeler insulated with cellulose on top of the old plaster ceiling(R19). The energy auditor said this dead space with no insulation between the two ceilings was a major issue. The only access to the area between the two roofs is a pull down attic ladder. First is the auditor correct? Second how can I insulate this space in a cost effective manner. We live in Chattanooga, TN where the winters are not very severe. Thanks.