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Our Story

Since 1979, Thermolite has been a leading innovator in secondary interior window systems. Thermolite is a GSA-certified federal government contractor serving areas nationwide with notable projects in Washington DC,Philadelphia, New York City, Chicago, Detroit, and more. We work with a variety of industries to improve their building performance through interior window retrofits.


Savings Savings

The Thermolite Window System may provide an immediate ROI when energy savings and capital cost reduction is required.

Efficiency Efficiency

We install discreetly on the interior of the building and can provide off hours installation if necessary.

Integrity Integrity

Since our product is installed on the inside of your building, your building’s architectural beauty, integrity, historic credit will be maintained.

Security Security

The Thermolite Window System provides patented protection against bomb blast, hurricane winds and spying through its signal defense technology.


What is the Thermolite Window System?

Our patented Thermolite Window System is a one-of-a-kind alternative to traditional replacement windows. It is a secondary window system – the existing glass and frame is retrofitted on the interior of the building with a simple frame system. This transforms the existing glass into a high performing new window system in a manner comparable to double or triple glazed windows.

What are the benefits of secondary windows?

• Typical installations are 50% less expensive than new glazing and can be performed more discreetly during off-hours
• More energy efficient – commercial building insulation seals the building envelope to increase thermal performance and temperature comfort levels
• Preserve the aesthetic of the original windows – ideal solution for historic buildings
• Available in a variety of customized options, including sound control windows, commercial storm windows for hurricane protection, and blast mitigation security window systems

How do I learn more about Thermolite’s secondary window systems?

Contact us today by filling out our contact form to request more information, or give us a call at (574) 234-4004. We also have a variety of resources demonstrating our product and its performance, including our numerous case studiesand a sampling of notable projects throughout the US.

Visit our Website today!  www.thermolitewindows.com 

What We Do

Regions & Counties Serviced

  • New York City, Long Island and Hudson Valley
  • Connecticut and Western Mass.

Indiana 1

  • St Joseph

Our CSI Codes

08 01 51 - Operation and Maintenance of Metal Windows
08 06 50 - Window Schedule
08 51 13 - Aluminum Windows
08 51 16 - Bronze Windows
08 51 19 - Stainless-Steel Windows
08 51 23 - Steel Windows
08 56 53 - Security Windows
08 56 73 - Sound Control Windows

Gallery

Featured Image 1
Military Installations
Featured Image 2
RetroWal
Featured Image 3
United States Army / Army Corps of Engineers Project Photo 1
Featured Image 4
Sidney Yates Federal Building Photo 1

Associations & Memberships

BOMA (Building Owners & Managers Assn.)
BOMA (Building Owners & Managers Assn.)

Preferred Brands

Therm-O-Lite
Therm-O-Lite
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