What type of attic insulation should be used to reduce heat loss?
Attic spaces are a major source of heat loss in historic buildings. There are a variety of insulation options, including fiberglass batts and blown-in vermiculite or cellulose. The key is to place the insulation between the attic floor joists if the space above is unoccupied or between roof joists if it is regularly used or heated. With either installation it is important to have the vapor barrier pointed down toward the heated space, and to have the attic adequately ventilated.
