Which option provides the best thermal resistance?

Which option provides the best thermal resistance?

• A. Low R-value
• B. High R-value
• C. Insulation Thickness
• D. Thermal Conductivity

Answer: (B)

Thermal resistance is measured by the R-value, and higher R-value means more resistance to heat flow. So opting for a high R-value provides the best protection against heat transfer, improving energy efficiency in a multifamily building. A low R-value indicates poorer resistance. Insulation thickness can raise the effective R-value, but the resistance is defined by the R-value itself, not thickness alone. Thermal conductivity describes how easily heat moves through a material; materials with lower conductivity can offer higher resistance, but the direct measure used to compare resistance is the R-value.

Thermal resistance is measured by the R-value, and higher R-value means more resistance to heat flow. So opting for a high R-value provides the best protection against heat transfer, improving energy efficiency in a multifamily building. A low R-value indicates poorer resistance. Insulation thickness can raise the effective R-value, but the resistance is defined by the R-value itself, not thickness alone. Thermal conductivity describes how easily heat moves through a material; materials with lower conductivity can offer higher resistance, but the direct measure used to compare resistance is the R-value.