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Shelly Angers, N.H. Department of Cultural Resources
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NH State Library window rehab both historical and energy efficient

The New Hampshire State Library in Concord is undergoing historic rehabilitation work that will not only bring back its original 1890s look, but also make the nineteenth century structure more energy efficient.

Over the next six months, each of the Library’s 160 windows will undergo rehabilitation. Many of these windows are original to the building; the others are replacements from the 1930s.

The project entails installation of UV solar film on most windows to reduce heat loss in the winter and prevent heat build-up during the summer. The staff and public will benefit from the energy-efficient and more comfortable environment, and the historic collections housed in the library will have less exposure to harmful sun rays that cause paper to become brittle.

To return the New Hampshire State Library to its original appearance, the exterior window sashes and frames will be reglazed and painted black.

James L. Garvin, state architectural historian from the New Hampshire Division of Historical Resources, provided the expertise needed to make sure that the final results are correct according to historical preservation standards.

The State Library building, built in 1895 of native granite, is one of the complex of buildings comprising the center of state government in Concord. Flanked by New Hampshire lilacs and with the sculpture “Diora” recently installed near the main entrance, it bears the name of the state in Latin on its facade. Aptly titled, the New Hampshire State Library serves all branches of state government as well as all citizens of the state.

“The State Library building has served the people of New Hampshire for more than 100 years,” said Michael York, state librarian. “This window rehabilitation, together with the new roof installed this winter, is a smart long-term investment that will insure responsible stewardship of the building for our citizens in a cost-saving manner.”

The New Hampshire State Library promotes excellence in libraries and library services to all New Hampshire residents, by assisting libraries and the people of New Hampshire with rapid access to library and informational resources through the development and coordination of a statewide library/information system; by meeting the informational needs of New Hampshire’s state, county and municipal governments and its libraries; and by serving as a resource for New Hampshire. For more information, visit




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