Extreme Structures LLC provides Insulspan Strucural Insulated Panel Systems, (SIPs) for use in both residential and commercial building projects since 1995. These Panels provide builders and homeowners with energy efficiency, superior structural integrity, and an easy to install building system. Replacing traditional stick built construction, SIPs are easy to work with and versatile for exterior walls, roofs, floors and additions.

Extreme Structures LLC also specializes in foundations using ICFs (Insulated Concrete Forms.) ICFs create a warm, dry, solid foundation on which to build. Attainable r-values from R-30 up to R-50 will help keep your house warm in the winter, cool in the summer. ICFs also have shown to be extremely resistant to destructive forces such as, tornados, earthquakes, fire, and hurricanes. Since you will have a strong super insulated, airtight house, why not put it on a strong, super insulated foundation?

Whether you build or we build, you can choose from our stock plans, your own plans, or we can help you design the home of your dreams.

Why Go Green?

The simple answer is money. Building with green methods means you will keep more money in their pocket in the long run. Along with money, sustainability is a huge advantage of Green building. Imagine having a home that that takes little or no money to operate-having smaller heating and cooling bills.

Other benefits include:

With SIPs and other products that we provide, the possibilities for energy efficiency are virtually unlimited.

For more information on Building Green visit: http://insulspan.com/professionals/building_green.html.


What Our Customers Have To Say

Extreme Structures LLC was the company we hired to do a 1200 sq. ft. addition on our home in Milwaukee. They truly were experts in their field. We found them to be, dependable, conscientious, with superior attention for detail, and extremely easy to work with. After our initial experience, there was never a second thought as to who would build our dream home in Denmark. Our new home is everything we hoped for and more!

-Fred and Barb


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Featured Projects

Extreme Structures is proud to be the designer and builder for the new exhibit building for the Rogers Street Fishing Village located in Two Rivers, WI. The new building will be constructed with a timber frame and structural insulated panels. Construction is currently underway and expected to be completed this Fall.