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:

1. First, determine the thickness of the insulation (T) in inches.
2. Next, determine the area of the insulation (A) in square feet.
3. Next, determine the temperature difference across the insulation (ΔT) in °F.
4. Finally, use the formula R = T / (A * ΔT) to calculate the Rockwool R-Value.
5. 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