Harmon Inc.'s Service Glass based in Chicago is currently in
the process of renovating the window system of the city's 3550
North Lakeshore Drive's two 28-story condominium towers. The project
is in its second year, and, according to Harmon, is ahead of schedule.
The towers, which included non-thermal, continuous strip windows
with monolithic glass, were nearly 30 years old when renovations
began. Veneer masonry was not only failing due to the stress of
the old windows, but the windows were leaking air and water, and
provided no insulating capacity.
In renovating the towers, Harmon's Service Glass recommended
an access system in which the windows would be demolished and
installed from the outside of the building. This, according to
Harmon, not only helped improve the schedule, but also minimized
the disruption that would have been caused by doing the work from
Harmon's renovation team has installed more than 7,000 steel
brackets and more than five miles of structural steel sill, as
well as having removed 6,904 windows and doors. The new windows
feature high-performance, argon gas-filled insulating glass with
heat-absorbing tint and low-E coatings. They also have thermally
broken frames that are finished with a custom champagne color,
high Kynar® paint.