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Insulating the Home

Jim and John Case show Bob how to insulate the cathedral ceiling. To insure airflow and prevent condensation buildup they install channels between each rafter from the eve all the way to the ridge vent. Then they use a dense pack paper backed R-30 fiberglass insulation. This allows for the channel and the insulation to fit between the standard rafters. In the walls they install an R-13 with a plastic vapor barrier instead of the paper backed. Since there is less air movement in the walls, they need to insure no moisture gets in. More information