R-Value Myth
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The R-Value Myth:  
Insulation materials with the same R-Value will perform equally.
It is true that insulation materials with the same R-Value perform equally in the laboratory, however this is not true when variables such as wind, moisture in the form of rain and snow, vaporous moisture or humidity, and extreme temperature differences exist.

Studies show that 93% of conductive heat flow is already stopped by R-13 insulation. Upgrading from R-13 to R-40 reduces conductive heat flow by only another 5%.  R-value measures energy moving in and out of a home through the insulation material (conduction).   The real energy-waster is air leakage (convection) – the cause of up to 40% of a home's energy loss (Source: U.S. Department of Energy).   

Icynene® delivers ideal R-value and air-sealing in one step, helping you address the most significant source of energy loss so you can take energy performance beyond R-value.