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.

For more information on Insulspan SIPs, visit

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

Our two dimensional dream house was finally going to become a reality. Extreme Structures converted our sketches to blue prints and engineered a safe way to build it. Team Extreme gave us the courage to become general contractors and build our own house. Installing windows and doors was a snap because of the squared framing and dimensional accuracy. Inspectors and tradesmen were awed and appreciative of the little things done by Extreme Structures that made their job easier. Now a passive convection wood fireplace keeps our 1560 sq ft home (with a 21 ft cathedral ceiling, loft and 36 windows) a comfortable 70 degrees. Even though average temperatures were below normal, we used only 2 pickup truck loads of wood. Our total heating cost for November through January was only $225. Seeing is believing! This home is exactly what we hoped it would be. Partnering with the right team made building it an enjoyable experience. If we ever have to live somewhere else, it will be in a SIP/ICF house and we sincerely hope Extreme Structures will be our partners again.

-David and Janet

Click Here to Read More Customer Testimonials

Featured Projects