Enter the thickness, area, and temperature difference into the calculator to determine the R-Value of Rockwool insulation. This calculator can also evaluate any of the variables given the others are known.

## Rockwool R-Value Formula

The following formula is used to calculate the R-Value of Rockwool insulation.

R = T / (A * ΔT)

Variables:

- R is the R-Value (ft²·°F·hr/Btu) T is the thickness of the insulation (inches) A is the area of the insulation (square feet) ΔT is the temperature difference across the insulation (°F)

To calculate the R-Value of Rockwool insulation, divide the thickness of the insulation by the product of the area of the insulation and the temperature difference across the insulation.

## What is a Rockwool R-Value?

The R-value of Rockwool, a type of mineral wool insulation, refers to its resistance to heat flow. The higher the R-value, the greater the insulating power of the material. This means that Rockwool with a high R-value will be more effective at preventing heat transfer, making it an energy-efficient choice for insulation in buildings. The R-value depends on the thickness of the insulation, its density, and its specific thermal resistance.

## How to Calculate Rockwool R-Value?

The following steps outline how to calculate the Rockwool R-Value using the given formula:

- First, determine the thickness of the insulation (T) in inches.
- Next, determine the area of the insulation (A) in square feet.
- Next, determine the temperature difference across the insulation (ΔT) in °F.
- Finally, use the formula R = T / (A * ΔT) to calculate the Rockwool R-Value.
- After inserting the values of T, A, and ΔT into the formula, calculate the result.

**Example Problem:**

Use the following variables as an example problem to test your knowledge:

Thickness of the insulation (T) = 2 inches

Area of the insulation (A) = 100 square feet

Temperature difference across the insulation (ΔT) = 20 °F