Follow a Serious Energy Saving Retrofit in Chicago
Thomas McGrath is very serious about reducing energy usage of the 1890’s building he owns in Chicago. With partners Ted Roszkowski of ACT Construction and architect Gerhard Zenserling, this “gut retrofit”, resuses as much existing materials as possible and focuses on replacing energy inefficient materials where needed - like the windows. The net result aims to be USGBC Leed Platinum, Chicago 3 star rated, and Energy Net Positive (meaning, excess energy will power the building, going beyond just being energy “net zero”).
Thomas is documenting the entire project on his blog. His latest update emphasizes the use of high R-value fiberglass windows - a key contributor to one of the core elements of his energy saving retrofit, “super-insulating”. Thomas explains…
…an average window might have an R value of 1. A really well-made double pane window from a company such as Marvin or Pella might achieve an R value of 3. The Serious Materials Windows achieve an R value of 9. The higher the R-value-the higher the resistance, the higher the resistance the higher insulation, the higher the insulation- the slower heat moves through the material, and the slower heat moves through- the lower the energy required to heat or cool the inside space.
From his great pictures, you can tell that the building incorporate more window area in the design than what one may usually see (higher window-to-wall ratio). With his SeriousWindows, Thomas is able to accomplish super-insulation, reduce heat loss, and manage solar heat gain to his advantage - all contributing to the overall building energy saving performance and indoor comfort (of the future lucky owners!).
There are many things that make this project extraordinary, amongst them, Thomas’ first step of the project - transforming the garage into the power-house for the retrofit work currently underway. The photovoltaic (PV) array, the garage provides power to the workers - for lighting the construction project, powering up tools, heating the space, etc. All the energy required to reconstruct the building is being generated onsite. That’s a very serious approach to how to rebuild.
For those of you attending GreenBuild in November, in the great city of Chicago, don’t miss your opportunity to experience this inspiring retrofit for yourself - the project will be part of the GreenBuild Tour Program. We look forward to seeing you there, and Thomas and Team, congratulations!
















It’s amazing that when Vice President Biden has so many places he could visit to highlight the use of