R-Valu Comparison to fiberglass:                                                                  

Panel Thickness:         Actual R-Value         Performance Value

4 ½”                             R-17                            R-25

6 ½”                             R-25                            R-38

8 ¼”                             R-33                            R-50

10 ¼”                           R-41                            R-62

R-Values are currently based on fiberglass testing, which is done in dry air laboratories, which do not reflect the true conditions of a home.  When tested by Oak Ridge National Laboratories, an 8x8 SIPS Box tested 15 x tighter than a stick framed box!!  Because air-tightness and thermal mass are properties that are inherent with SIPS, they will out-perform their given R-Values in comparison to fiberglass.

ENERGY TEST HOME: 3,000 SF  42 Windows  11 Skylights

In 1996 Fred Fischer Built his home with SIP panels. Using 4 ½” Wall panels & 6 ½” Roof panels.  He set up meters on the house to separate his heating & cooling from lights, water heater & personal electric.  Louisville Gas & Electric and the Trane company did energy Audits on the home based on like homes in the area with fiberglass insulation.  Their annual estimates are shown on the table below.  The Far right column is the Actual Results over a 6 year average.

Download a PDF copy of the Energy Rating Certificate on the home Below:  5 Star + !!!!

Photo of the Energy Star Rated home in Lanesville, IN – Built By Steve Short