Max R-Value Calculator

Formula

To calculate the Max R-Value (\(R\)):

\[ R = \frac{T}{MTC} \]

Where:

\(R\) is the Max R-Value
\(T\) is the Thickness (in)
\(MTC\) is the Max Thermal Conductivity (Btu-in/h-ft²-F)

What is Max R-Value?

The Max R-Value is a measure of thermal resistance, indicating how well a material can resist heat flow. It is calculated by dividing the thickness of the material by its maximum thermal conductivity. Higher R-values indicate better insulating properties.

Example Calculation 1

Let's assume the following values:

Thickness (\(T\)) = 2 inches
Max Thermal Conductivity (\(MTC\)) = 0.5 Btu-in/h-ft²-F

Using the formula:

\[ R = \frac{2}{0.5} = 4 \]

The Max R-Value is 4.

Example Calculation 2

Let's assume the following values:

Thickness (\(T\)) = 3 inches
Max Thermal Conductivity (\(MTC\)) = 0.75 Btu-in/h-ft²-F

Using the formula:

\[ R = \frac{3}{0.75} = 4 \]

The Max R-Value is 4.