Energy Efficiency

10 to 12 percent of a home’s heat loss is through its windows.

Up to 35 percent can be the result of uninsulated walls.

References

“Saving Windows, Saving Money: Evaluating the Energy Performance of Window Replacement and Retrofit”—Study by Preservation Green Lab
http://www.preservationnation.org/information-center/sustainable-communities/green-lab/saving-windows-saving-money/

Preservation Brief 3—Improving Energy Efficiency in Historic Buildings by Jo Ellen Hensley and Antonio Aguilar
http://www.nps.gov/tps/how-to-preserve/briefs.htm

Building Information Center: Insulation—National Trust for Historic Preservation http://www.preservationnation.org/information-center/sustainable-communities/buildings/weatherization/insulation/#.VLxcMsZ3p6k

Weatherization Guide for Older & Historic Buildings—National Trust for Historic Preservation
http://www.preservationnation.org/information-center/sustainable-communities/buildings/weatherization/#.VLxaJcZ3p6k

Energy Efficiency Basics—Common Sense Preservation
http://www.commonsensepreservation.org/topics/energy-efficiency-basics

Energy Advice for Owners of Historic and Older Homes—National Trust for Historic Preservation
http://epa.gov/region5/sustainable/pdf/Energy-advice-for-owners-of-older-homes.pdf

The Fifth Fuel—Energy Audits
www.thefifthfuel.com/


1 “Weatherization Guide for Older & Historic Buildings.” Sustainable Communities. National Trust for Historic Preservation, 2015. Web.  http://www.preservationnation.org/information-center/sustainable-communities/buildings/weatherization/#.VLxbjcZ3p6k