Anthony J. Celebreeze Federal Building: Energy savings success story
As the 2005 deadline requiring federal buildings to reduce energy use by 30 percent draws near, property managers who haven’t addressed the issue look for a cost-effective solution that requires minimal installation time and pays for itself in less than 10 years, as required by Executive Order 12902.
The Celebreeze building was originally constructed in 1966, when it was typical for the metal frames to be glazed with single-pane glass. Today, industry standards for windows demand insulating glass units and framing have thermal breaks that block the transfer of heat or cold from the exterior of the building to the occupied space.
An interior insulating window is a separate window and frame that works in conjunction with the building’s existing window to act as a dual barrier against the elements. The additional window creates a significant thermal break as well as 21⁄2-to-3 inches of meaningful dead air space that is much greater than the standard 3⁄4 inch of dead air offered by new insulating glass panels. Interior insulating windows can eliminate 75-to-90 percent of energy-robbing air infiltration and reduce heat loss due to conduction by 40-to-50 percent. They also can reduce noise infiltration by well over 50 percent.
Another advantage to retrofitting custom interior units onto the inside of the existing windows is that the units are not vacuum sealed and can be removed for cleaning and repair. A cost-effective between-the-glass blind option also can be implemented to reduce solar heat-gain issues and reduce blind cleaning and maintenance.
Interior insulating windows are available in various glass options with aluminum or vinyl frames. The interior windows can be installed in any weather without closing or sealing off corridors, offices or floors, and without interrupting office activities. Installation time for this type of interior window is approximately 45 minutes per window.
“The four-month project caused minimal inconvenience to the various federal agencies occupying the building,” the building manager reports.
An additional benefit to governmental agencies is that interior insulating windows are on the federal supply list. Maine Glass manages the entire project through installation.
Celebreeze building managers chose interior insulating windows because they are a cost-effective option to full window replacement. They cost approximately 50 percent less than most replacement windows. Prior to purchase, Maine Glass provides a free energy study that will forecast savings resulting from interior insulating windows. The easy-to-understand energy study forms can be completed by the building owner, manager or engineer, and assess items such as window size; window square footage; the total number of windows; the total square footage of the building; whether the window frame is wood, metal or vinyl; whether there is air leakage through frames and seals; and the building’s heating type and thermostat settings.
S. Celani & Associates in
Maine Glass has installed interior insulating windows and between-the-glass blinds in a variety of commercial buildings including office buildings, hotels, schools, hospitals and other healthcare facilities. For more information about interior insulating windows, contact Maine Glass at 888/825-6975 or visit www.maineglass.com.
The author is publicist for Maine Glass in
All in the (Quality) Control
He told plant supervisors and other personnel from nearly 20 window manufacturing companies that “the initial buy-in” represents a challenge for companies. Executives see higher costs, and it takes longer to find the payback. Eventually, the payback does come, he said during IGMA’s May training session in
To illustrate the payback, Werner Lichtenberger, special projects manager for TruSeal Technologies in
“Glass washers that become glass contaminators.” In particular, washers that don’t rinse glass properly and leave detergent on the glass.
The event, produced by IGMA twice a year—once in the United States and once in Canada—featured a panel of industry suppliers, each focusing on one component of IG and the issues fabricators need to be aware of to produce quality IG units. The topics included causes of glass breakage, glass handling, the science of desiccants, choices in spacer systems, sealants and glass fills.
The alliance’s twin publication, Preventing Insulating Glass Failures, TM-4100-03, costs $61 for members; nonmembers pay $100. The member price for the quality-control manual, TM-4000-02, is $87.50 and nonmembers pay $180.
The IGMA gathers next for summer technical meetings Aug. 6-8 in