Insulspan SIPs

General Description

Structural insulated panels (or SIPs, as they are commonly called) are composed of a continuous core of rigid expanded polystyrene foam insulation which is laminated between two layers of structural board with an industrial adhesive at controlled pressure to form a single, solid panel. The strength of this adhesive makes these panels structurally analogous to an I-beam, with the boards functioning as the flanges and the insulating core as the web. The panels can be pre-cut and custom fabricated, and are quickly assembled on-site by fitting splines into pre-routed grooves in the panel edges to form virtually any wall or roof configuration. The result is a simple, fast, highly efficient structural system which provides superior thermal performance and substantially greater strength than conventional stud construction. SIPs 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.

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What makes SIP construction more superior than traditional stick frame construction?

Energy Efficiency


Comfort and Versatility

Strength and Quality

Sooner "Move In" Date

Value and More Money Savings

Trust Worthy Reputation

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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