R Value of Insulation vs. E Value – What’s the Difference?

So what, exactly, does the R value of insulation mean? Insulation’s R value measures its ability to resist convection and conduction, two forms of heat transfer. Convection is the transfer of heat from one object to the other through air circulation, while conduction is the transfer of heat from one object to another through contact. However, there is a third type of heat transfer, emission, which is actually the leading cause of home energy waste.

Emission is the transfer of radiant heat from a direct source – for example, the sun. Unfortunately, R value does not take this type of heat transfer into account, and standard insulation does not adequately protect homes against it. This is why eShield™ plays such a vital role in bringing down a home’s energy costs – it effectively blocks 97 percent of all emission.

Emission-blocking capability is measured in E value, and eShield™ boasts the highest E value of any current insulation product. Plus, eShield can be retrofitted on top of existing insulation, helping form the most comprehensive home energy barrier on the market.

If you would like to learn more about eShield™ insulation, please call or e-mail us today.