What does the R Factor measure in construction materials?

The R Factor, or R-value, is a crucial measurement in the realm of construction materials, particularly when it comes to insulation. It indicates the resistance of a material to heat flow; the higher the R-value, the better the insulation’s effectiveness in reducing heat transfer. This efficiency is vital for energy conservation in structures, as it helps maintain indoor temperatures by minimizing heat loss in winter and heat gain in summer. Consequently, using materials with appropriate R-values can significantly impact energy bills and overall comfort within buildings. Hence, measuring insulation efficiency is the primary purpose of the R Factor.