R-Value

Thermal Performance Myth - There is a widespread belief that all insulation materials of equal R-value will perform equally.

Thermal Performance Fact - While insulations of equal R-value perform equally in the controlled conditions of a laboratory, they do not all maintain that R-value in the walls and ceilings of a building. Some off gas into the atmosphere and suffer a decline in R-value.

R-value reality check
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).  But 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. Click here to read more.