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Green Retrofitting of Historic Buildings

Most historic buildings were traditionally designed with many sustainable features that responded to climate and site. When effectively restored and reused, these features can bring about substantial energy savings and water conservation. Taking into account historic buildings' original climatic adaptations, today's sustainable technology can supplement inherent sustainable features without compromising unique historic character.

Guidelines on Sustainability for Rehabilitating Historic Buildings
   
Sustainable Historic Preservation (Whole Building Design Guide, National Institute of Building Sciences)