In the urban tapestry of New York, the charm of listed buildings captivates residents and visitors alike. However, these structures often grapple with energy inefficiency, leading to discomfort and sky-high energy bills. Secondary glazing emerges as an elegant solution, offering significant energy savings while respecting the architectural integrity of these historic edifices. Here’s a detailed look at ten distinguished providers of secondary glazing solutions tailored for listed buildings in New York City.

1. CityProof

Address: 55 E 80th St, New York, NY 10075
Contact: (212) 744-8888
Website: www.cityproof.com

CityProof specializes in customized secondary glazing solutions designed with performance and aesthetics in mind. Their products seamlessly blend into the existing windows, providing thermal insulation and noise reduction without compromising the historic character of your building. Each installation is tailored to meet local regulations, ensuring that your listed home retains its charm while enjoying enhanced energy efficiency.

2. New York Window Film

Address: 40 W 29th St, New York, NY 10001
Contact: (212) 619-2789
Website: www.nywf.com

New York Window Film offers innovative solutions that include secondary glazing systems alongside window film applications. By minimizing heat loss and reducing glare, their installations provide significant energy savings. Their commitment to preserving the historic nature of buildings allows homeowners to prepare their windows for modern energy efficiency standards without detracting from their unique aesthetic appeal.

3. ClearShield

Address: 90 E 30th St, New York, NY 10016
Contact: (212) 201-0424
Website: www.clearshield.com

ClearShield has garnered a reputation for its high-quality secondary glazing that preserves the integrity of historical facades. Offering a range of materials and designs, they customize their solutions to ensure excellent thermal performance coupled with minimal visual impact. This meticulous approach allows property owners in historic districts to enjoy modern conveniences while retaining the character of their historic homes.

4. The Window Company

Address: 228 W 30th St, New York, NY 10001
Contact: (212) 631-9393
Website: www.thewindowcompany.com

With extensive experience in historical restoration, The Window Company focuses on meticulous craftsmanship and materials that respect the original architecture. Their secondary glazing units are designed to provide effective insulation without altering the external appearance of your listed property. This balance of form and function epitomizes what homeowners seek in energy-efficient solutions.

5. Green Living Technologies

Address: 3 Columbus Circle, New York, NY 10019
Contact: (212) 634-4160
Website: www.greenlivingtechnologies.com

Green Living Technologies prides itself on offering eco-friendly solutions for enhancing energy efficiency. Their secondary glazing products not only reduce heat loss but are also crafted from sustainable materials. Their team collaborates closely with clients to ensure that any upgrades align with local historic preservation guidelines while maximizing energy savings and reducing the overall carbon footprint of each home.

6. RSL Architectural

Address: 120 W 24th St, New York, NY 10011
Contact: (212) 529-5000
Website: www.rslarchitectural.com

RSL Architectural’s secondary glazing systems are engineered for optimal energy performance and are particularly suited for the stringent demands of listed buildings. Their commitment to advanced technology ensures that your home benefits from cutting-edge insulation properties while maintaining historical authenticity. Engaging with RSL means investing in long-term energy efficiency measures without sacrificing aesthetic values.

7. Olde Good Things

Address: 303 East 9th St. , New York, NY 10003
Contact: (212) 989-8814
Website: www.ogtstore.com

Olde Good Things is renowned for its eclectic collection of architectural salvages, but it also offers secondary glazing solutions for vintage windows. Their custom installations focus on preserving the original character of windows, combining innovative materials with traditional craftsmanship. This duality supports energy efficiency while honoring the heritage of your listed building.

8. Metro Windows & Doors

Address: 55 W 34th St, New York, NY 10001
Contact: (212) 244-1234
Website: www.metrowindows.com

Metro Windows & Doors provides an exceptional range of secondary glazing options that cater specifically to older and historic buildings. Their products are designed to enhance insulation while ensuring that the design aesthetic complements the building’s historical context. This careful balance ensures that homes do not lose their charm as they transition to more energy-efficient living.

9. EuroWindows

Address: 315 W 39th St, New York, NY 10018
Contact: (212) 464-4272
Website: www.eurowindows.com

EuroWindows specializes in premium secondary glazing options crafted from high-performance materials. Their installations are thoroughly engineered for energy efficiency, noise reduction, and luxurious aesthetics, making them a go-to provider for stylish renovations in listed buildings. Homeowners can achieve significant savings and improved comfort without compromising the beauty of their historic residence.

10. Architectural Glass & Aluminum

Address: 429 E 67th St, New York, NY 10065
Contact: (212) 988-0880
Website: www.archglass.com

Architectural Glass & Aluminum excels in creating bespoke secondary glazing systems that cater to the needs of listed buildings throughout New York City. Their emphasis on both design and sustainability means that homeowners can enjoy energy savings while retaining the distinctive details of their property. The company prides itself on delivering beautifully crafted solutions that harmonize with the architectural integrity of historic districts.

In conclusion, secondary glazing presents an invaluable opportunity for owners of listed buildings to enhance energy efficiency. New York City promotes a myriad of innovative companies that specialize in these solutions, allowing residents to preserve their architectural legacies while achieving vital energy savings.

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Last Update: February 10, 2026