Werner’s Energy Seal Attic Ladder, developed with Owens Corning, has become a Home Depot exclusive.
The per-capita list is based on 2010 U.S. Census data and includes commercial and institutional buildings certified under LEED. About 2.2 billion sq. ft. of space has been certified worldwide through 2012.
The results of a survey from the U.S. Energy Information Administration, a division of the Department of Energy, indicates that Americans are using less energy to heat and cool their homes.