Cold Floors? Exterior walls drafty?
Unless continuous contact can be maintained, void spaces will exist between the batt insulation and the floor above. These void spaces can range in size from small pockets to, in some cases, the entire length of the room. Cold air that penetrates the insulation can flood the void space between the insulation and the floor, rendering the insulation ineffective. Complicating matters is the necessity to accurately install the insulation around bracing and bridging between joists.
An unsealed house can leak enough air to fill two blimps everyday. Up to 40% of a building’s energy loss can be attributed to air leakage. Icynene spray foam insulation can help you save on heating and cooling costs by up to 50%.