Windows
Generally,
the repair and rehabilitation of original and later historic windows, including
the installation of
weather-stripping and good
quality storm windows, can be accomplished at no greater cost than replacement
with new
insulating glass windows and will meet or exceed current energy code
requirements for historic
structures. If
properly maintained, original and historic windows will last longer than many
of today’s
replacement windows. It should be noted that methods exist for
de-leading historic windows. The
Historical
Commission maintains a list of window restoration specialists available to
applicants.
The Historical
Commission strongly urges property owners to repair
and restore
original or later historic windows. If an
applicant believes
that such windows cannot be
repaired, the
applicant's proposal for replacement should be reviewed
by the
Commission for recommendations.
If the
Commission agrees that the proposed
replacement is
necessary, match the new windows to
the original
or later historic windows’ pattern,
proportions and
scale, and be in character with the
building’s style.
Match parts of the replacement
windows (such as
exterior molding and/or casing,
exterior frame,
and exterior sash members) to those
of the
original or existing historic windows.
Match the muntins’ thickness and profile to those of the original or
later historic windows. Muntins,
whether
structural or applied, must have an exterior three-dimensional profile and a
width appropriate to
the
building’s style. New windows with interior applied or removable muntin bars are not acceptable.
. The Historical
Commission will review proposed new window opening(s) in the building façade to
ensure new
openings are
consistent with the historically accurate arrangement of windows.
Mirrored,
tinted or heat-reflective glass or coatings cannot be used. Low e-coatings
are acceptable.
Retain
original or later historic shutters if possible. Replacements should be wood or a composite
with
overall design
and hardware appropriate to the style and period of the building. The Historical Commission is an
excellent guide
toward selecting the appropriate styles.
The Historical
Commission will seldom approve the removal of historic fanlights and
sidelights.
Recommendations:
Although
storm windows need not be a guideline concern, provided that the installation
of the
storm windows
does not alter the original and later historic windows, openings, or frames; it
is
encouraged that the
meeting rail of the storm window be consistent with that to the window.