// Energy Solutions is blowing our insulation donated by Demilec. It is called SEALECTION Agribalance and is made of refined vegetable oils. With our thickness of (1,2,3,3.5,4,5) inches the R value is (4.45,8.9,13.3,15.6,17.8) ˚F*ft2*h/btu. R value is a measurement of thermal resistance, so the higher the R value the better the insulation. Glass wool batting insulation has an R value of about 3.5 ˚F*ft2*h/btu for each inch.