R Value Is Only One Component of Heat Insulation

In the home remodeling and construction industry, r value is one type of measure used to determine the thermal resistance of insulation products. Insulation such as fiberglass and polyurethane and polystyrene foam resist heat and impede its transfer in and out of your home. The higher the r value, the slower the transfer of heat. These types of insulations are quite effective against heat convection and conduction, and are a necessary component of a more energy-efficient home. However, many homes don’t save as much energy as they could. What those insulations don’t guard against is radiant heat transfer or emissions.

Traditional fiberglass and foam have high insulation r values, but low e values or emissivity measurements, which means they allow radiant heat emissions to travel virtually unimpeded in and out of your home. eShield™ combines over ten years of research in heat radiation and the latest in technology to offer the highest e value in the market. It reflects over 97 percent of radiant heat – protection no radiant barrier on the market provides – and works with existing fiberglass, foam, or other insulating products to provide superior insulation r value and e value for a more complete insulation solution.