Glazing Retrofit System cuts building energy use.

Press Release Summary:

Designed for any curtainwall or storefront, RetroWAL™ is installed on inside of existing glass in 15 min, increasing thermal performance of single pane windows in commercial buildings. Basic system raises center of glass R-value from R-1 up to R-3. Air infiltration is minimized and solar heat gain is controlled by low-e coating, factory applied thermal film, or by using between glass blinds. For tenant comfort, RetroWAL eliminates drafts and glare from sun while minimizing street noise.

Original Press Release:

Thermolite Launches RetroWAL(TM): A Revolutionary Low-Cost Commercial Glass Retrofit System

Thermolite announced today it has launched a revolutionary glazing retrofit system that enables rapid ROI for the commercial energy efficiency retrofit market. RetroWAL™ is designed for any curtainwall or storefront and is ideally suited for historic and landmark projects as it allows preservation of the existing façade. RetroWAL™ consists of a “Window Attachment Lite” or WAL which is easily installed on the inside of the existing glass in as little as 15 minutes. and greatly minimizes disruption to building occupants or tenants.  The product increases the thermal performance of single pane windows in commercial buildings, improving center of glass R-value from R-1 up to R-3 (U-factor 1 to 0.33) with just the basic system. Air infiltration is greatly reduced and solar heat gain is controlled by the low-e coating, factory applied thermal film or by using between glass blinds.

RetroWAL™ addresses the massive opportunity of retrofitting the commercial buildings in the United States.  According to the Department of Energy Building Database, over 53% of commercial buildings have single pane windows.  If all single pane windows were retrofitted and if all these projects result in our typical 20% savings, then over $40 billion dollars per year would be saved along with 300 million of barrels of oil and their associated CO2 emissions.

“This product does many things at the same time,” said Thermolite’s President Steve Champlin.  It reduces the total building energy use and capacity requirements by an average of 20%.  This means not only lower monthly heating and cooling bills but also lower capital cost of replacing and maintaining expensive HVAC systems. RetroWAL™ enhances comfort to tenants by eliminating drafts, glare from the sun and greatly reduces street noise. Our technology is always on, never needs maintenance and is good for the life of the building.  The return on investment directly effects the utility cost, the people and the environment- it should be the first retrofit consideration in large projects.  There is no other product on the market that does all of this at the price.”

Priced at less than $20 per square foot which can easily be installed by a building’s maintenance staff; RetroWAL™ can potentially deliver the energy performance of a new curtain wall with a 5 year ROI all while not displacing tenants nor adding significant weight to the building structure.

About Thermolite

Thermolite provides advanced products and services that reduce energy usage; improve security in the commercial building environment.  It is the leader in blast mitigation and hurricane retrofit window system technology. The factory is located in South Bend, Indiana.


Steve Champlin


More from Fasteners & Hardware

All Topics