Historical Details, High-Performance Windows

Retrofit windows offer sweeping NYC views and modern-day performance.

The top 30 floors of New York’s Woolworth Tower Residences underwent extensive renovations. Each unit showcases new, historically inspired, high-performance windows and terrace doors from Wausau Window and Wall Systems. Photo: Tameo12-Shutterstock

New York City’s iconic Woolworth Tower Residences’ top 30 floors underwent extensive renovations. With sweeping views of the city, each residence showcases new, historically inspired, high-performance windows and terrace doors from Wausau Window and Wall Systems, Wausau, WI. The 33 luxury condominiums at 2 Park Place range from one to four bedrooms with amenities including a private garage, fitness facility, and 55-ft.-long lap pool, plus wine storage for each unit and a tasting room. Residents have access to an exclusive entertainment lounge aptly named The Gilbert Lounge in honor of Cass Gilbert, the renowned architect who designed the building in 1913.

Guided by developer Alchemy Properties Inc., the architectural vision of SLCE Architects, and The Office of Thierry W Despont Ltd, all of New York, the tower residences’ interiors display Calacatta marble, Dada cabinetry, elevated ceilings, and herringbone-patterned oak floors. The exteriors’ polychromatic terra-cotta surrounds have been restored to their former grandeur. Wausau’s oversized windows provide the connection between outside and in with breathtaking views.

Together with general contractor CNY Group, New York, and window contractor, Kilroy Architectural Windows Inc., Bronx, NY, Wausau’s windows and terrace doors were confirmed as the best choice to maintain the prestigious property’s historic detailing, while delivering modern-day performance and easy operation.

Working with the Apogee Building Retrofit Strategy Team, Minneapolis, the window company provided Kilroy Windows with more than 630 units of 4250i INvent series simulated double-hung projected windows for the Woolworth project. “As their name indicates, simulated double-hung projected windows look like double-hung windows, but actually project from the plane of the wall, either inward or outward,” said Apogee team member Kevin Robbins. “Offset glass planes and narrow meeting-rail profiles replicated the appearance of existing windows.”

More than 630 units of 4250i INvent series simulated double-hung projected windows were installed. The windows look like double-hung windows, but actually project from the plane of the wall, either inward or outward. Photo: Oleg March

Careful installation

Drawing from its 71-yr. history of commercial and landmark window replacement, Kilroy worked closely with Wausau as supported by Apogee Building Retrofit Strategy Team leaders for a smooth and accurate installation. Floor-by-floor, the team carefully removed the existing double-hung units. These had been manufactured using non-thermal framing and 1-in. insulating glass without the low-e coatings available today. After removing the previous units, the rough openings were prepared using pre-assembled, extruded aluminum “panning” trim to help ensure the new windows were installed plumb and square.

To ensure smooth installation and performance as specified, the projected windows and terrace doors were fabricated under controlled conditions in Wausau’s LEED-certified manufacturing center. Along with using low-e, insulating glass, the company relied on its finishing partner, Linetec, also of Wausau, to provide polyamide thermal barriers within the aluminum frame of the windows and doors. Wausau INvent series windows can achieve thermal performance NFRC U-Factors as low as 0.34, a Condensation Resistance Factor as high as 65, and acoustic performance Sound Transmission Class ratings of 31 to 42.

“The combination of these high-performance components–aided by the 4 1/2-inch-deep systems, as well as Wausau’s experienced engineering and quality fabrication–allow minimal solar heat gain and better air infiltration performance, which supports energy efficiency and comfort,” explained Robbins.

He continued, “In addition to helping maintain the desired interior temperature, the windows and doors also reduce unwanted noise when closed. When the residents prefer to open their windows for natural ventilation, projected windows are easier to open than hung windows and eliminate balances, which require continual maintenance, especially in large sizes with heavy glass.”

Complementing the buildings’ historic aesthetic, Linetec also finished the windows’ exteriors in a color called Dark as Night using a two-coat 70% PVDF resin-based coating. The coatings help extend the window-systems’ lifespan and reduce future maintenance.


— Watch a video.

— Get information on:

— Understanding NFRC U-Factors

Comments are closed.