Media and Resources
- Build with SIPs article in Mother Earth News
- Study Comparing the Energy Efficiency of SIPs to Traditional Stick Frame Construction
- Article about Extreme Structures posted in Green Bay Press Gazette - Read Article: Page 1 Page 2
- Article about Extreme Structures posted in Manitowoc Herald Times Reporter - Read Article: Page 1 Page 2 Page 3
- Building Systems Magazine and the Building Systems Council of the National Association of Home Builders presented an award to Insulspan for its model home design Read Article
- SIPs outperform stick framed structures in Oak Ridge National Labs R-value Test Read Article
- See how SIPs were used on This Old House Read Article
- Review more of the latest articles and news on structural insulated panels

What Our Customers Have To Say
We are proud to say that we are the only green built home in our town. Our new house was completed in March of 2008 by Jon Morehouse and Darren Harrington of Extreme Structures LLC of Denmark, WI. Our family was seeking to build a new home with many sustainable features, which is what drew us to the energy efficient qualities of Insulated Concrete Forms (ICFs) and Structural Insulated Panels (SIPs) during the summer of 2007. After completing the custom design and discussing our options with Extreme Structures, we decided that ICFs and SIPs technology was a great option for this project. The inherent energy efficient qualities of the construction and design has proven successful through our first winter in the new house as our monthly energy costs are approximately 2/3 of what they use to be, in a house that is almost twice as large and on two levels. In addition, our summer cooling bills have reduced significantly as well. Our experience in working with Extreme Structures and their partners was productive throughout, the project schedule and execution of design ran smoothly and was completed within budget requirements.
-David and Kristina
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Featured Projects
Extreme Structures is working on projects planned for Two Rivers, Sheboygan, Illinois and Iowa. Watch for updates!




