Gallery WindowSkin 1
Gallery WindowSkin 1
April 2021
Headquarters Rochester, NY 14604, USA

WindowSkin - An affordable and high-performance energy efficiency window retrofit solution

The Solution is a transformative window retrofit solution that provides as much insulation as an added pane of glass at an affordable price. WindowSkin panels are attached to the inside window glazing of existing windows optimizing the volume of air trapped in between the existing window and the window insulation retrofit. Like the gap between panes in a double-pane window (or the pockets of air in a down comforter), this layer of enclosed air – and its thickness in particular – creates an insular barrier and improves the efficiency of the window. The WindowSkin is designed specifically to optimize the thickness of this enclosed layer of air, maximizing its thermal insulation properties. Plus, each panel is custom-manufactured to fit the existing window exactly, with a patented design that minimizes the possibility of air leakage to optimize the thermal barrier.

Key features

  • Provides an additional R value of 0.7 and enables a visible light transmission ratio of 90%, making WindowSkin's practically invisible
  • On-site maintenance staff can self-install WindowSkins with just 30 minutes of training by a WindowSkin specialist
  • Can be used in historically designated buildings because installation doesn't change the appearance of the building, is technically “reversible”, and maintains windows operability as the windows open and close, just as they did prior to WindowSkin install
  • WindowSkin Insulating Retrofits reduce energy loss by 45% on single-pane windows and 22% on double-pane windows
  • WindowSkin panels are made with durable GreenGuard® and Cradle- to-CradleTM certified materials and 100% USA based supply chain
  • In buildings constructed prior to the 1970s, WindowSkin's installation does not disturb underlying site conditions such as lead paint


  • Windowskin provides up to 75% of the insulation improvement of a new Energy Star® window for less than 15% of the cost of replacement windows
  • WindowSkin provides up to a 10 times faster payback than replacement window and almost 5X faster payback than our nearest priced window retrofit competitor

Categories of Application

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

Looking For

Activity Region

  • /

North america

United States,

  • Headquarters
  • Activity

Related Topics

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.