It is recommended in most areas of the United States that a home have R-60 insulation in their attics. This is the equivalent of 20" deep fiberglass batting. Cathedral ceilings only allow for 6"-11" of insulation so in order to get the highest R-Value possible our Dr. Energy Saver Delmarva team is dense packing this cathedral ceiling in Cambridge, MD with TruSoft cellulose insulation. Here the team has already removed the ridge vent and and two courses of roof shingles and have also cut back 4" sections of the roof sheathing to gain access.