Energy Efficiency Insulation Study (Habitat for Humanity of Denton County)
Habitat for Humannity of Denton County has done a side-by-side comparison of two identical floor plans. One has been insulated with foam, and one with fiberglass and solar board. The differences in energy savings are astounding!
The home insulated with spray foam has 95% less air leakage than the home with fiberglass insulation and solar board.
Please take a look at the pdf linked below to see the details of the study.