Replacement for Missing or Non-historic Windows
Many buildings have inappropriate replacement windows or missing
windows. Although installing a replacement window that replicates
the original historic window may be desirable, documentation of
original windows may not be available. The minimum requirement is
that the new windows be consistent with the historic character of
the building. |
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| Above: Replacing these existing incompatible replacement windows
(left) with similar units would not meet the Standards. New
windows installed in a rehabilitation project should be compatible
with the historic character of the building. In this case,
new windows (right) that convey the general appearance of
industrial steel windows that were historically on the building were the appropriate choice
for this building. Photos: NPS files
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Glazing
Unless the property is a mid 20th-century building, historic glazing
is unlikely to be tinted or reflective. Unlike contemporary tinted glass, most clear low-e coatings
currently in use have very little visual effect and may be used
on historic buildings. It is recommended that a sample of glass be submitted for review if other than clear glass is being proposed. Where the historic glazing was
not clear, such as the obscure glass found in many industrial buildings,
a replacement other than clear, may be considered.
Left: The transparency of glass is critical to the function
of a shop window. The introduction of reflective glass here is inconsistent
with the historic character of this building. Photo: NPS
files
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