IS 139 Bronx

Originally constructed in 1957, Intermediate School 139 in the Bronx suffered severe water infiltration for many years. In a necessary restoration, Nelligan White designed a face-lift for this historic school building, maximizing its efficiency for the modern era. With a new 24,000 square-foot aluminum and glass curtain wall, the structure now conserves 7,521 gallons of fuel per year.

After performing an extensive analysis to determine how best to achieve long-term energy cost savings, we built a model to replace the failing brick masonry fa├žade and deteriorating single-glazed glass structure with a high-performance aluminum curtain wall and insulated glass system. With the implementation of this character-defining design, we were able to reinvigorate a neighborhood cornerstone.

Further, we incorporated louvered bris-soleil at the south-facing curtain wall to reduce the amount of glazing area exposed to solar radiation, an optimization that greatly improved energy efficiency during summer months. This louver system resulted in a difference of 11.5 kBtu/SF a year and accounts for the conservation of 318,158,310 Btu a year; a savings of 7,521 gallons of fuel.

This project was substantially completed in January 2014.


Architectural Staff
Nicholas Agneta
Andrew Barwick
Timothy Jones
Jake LaChapelle
Bruce G. Nelligan
Ofunne Oganwu
Elizabeth Suarez
Kathleen Urbani
Project Team

New York City School Construction Authority (NYCSCA)

Structural Engineer
Gilsanz Murray Steficek LLP

Mechanical, Electrical & Plumbing Engineer
IAQ Systems Inc.