The Thermal Resistance of RetroFoam
The thermal resistance, or R-Value, of insulation material, is used to help determine just how energy efficient the insulation material actually is. Fiberglass batt insulation, for example, has an R-Value of R-13 or a thermal resistance of 13. One thing to keep in mind with fiberglass batt insulation is it can degrade over time, which will make the thermal resistance weaker or nonexistent. If you left the front door of [...]