These illustrated guidelines were issued in 2013 by the Department of Interior, National Park Service, Technical Presentation Services. These guidelines replace the chapter on "Energy Conservation" in the "Illustrated Guidelines for Rehabilitating Historic Buildings.". These guidelines offer specific guidance on how to make historic buildings more sustainable in a manner that will preserve their historic character and that will meet The Secretary of the Interior's "Standards for Rehabilitation." The written guidance is illustrated with examples of appropriate or "recommended" treatments and some that are "not recommended" or could negatively impact the building's historic character.
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