What are the R-value and K-value, and how do they help me choose the best insulation for my packaging needs?

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What are the R-value and K-value, and how do they help me choose the best insulation for my packaging needs?

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The R-value is a measure of thermal resistance, or a material’s ability to prevent heat loss. A higher R-value correlates with a greater ability to prevent heat loss. The K-value is a measure of thermal conductivity that is calculated by dividing insulation thickness by its R-value. When the R-value is high, the corresponding K-value is low. Since the cost of insulation increases with R-value, a cost-benefit analysis is always required to choose the best insulation for a specific application. Listed below is a summary of R-value by type of insulation. These values are general guidelines based on one-inch thick insulation.

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