Rock Wool Vs Glass Wool, Which One Is Better?

When insulating a building, it is important to ensure you have the best material for the job. we've outlined some of the important factors to consider when deciding if rock wool or glass wool will be best for your project.

Working temperature:

rock wool's working temperature is up to 600 Celsius, while glass wool is below 350 Celsius.

Application:

Rock wool is frequently utilized in industrial insulation projects, such as those in oil and power plants, because it boasts a higher operating temperature. On the other hand, glass wool is widely used in commercial and building insulation due to its lower operating temperature.

R-value:

R-value is a measure of insulation's ability to resist heat flow. Rock wool typically has a higher R-value per inch than glass wool.

Fire resistance: Rock wool is naturally fire-resistant and has a higher melting point than glass wool, making it a better choice for applications where fire resistance is a concern.

Moisture resistance:

Both rockwool and glass wool are resistant to moisture, but rockwool is better at resisting water absorption and has a higher resistance to mold and mildew.

Weight:

Rockwool is denser and heavier than glass wool.

Cost: The cost of rock wool and glass wool insulation can vary depending on the specific product and application, but in general, glass wool cost is lower.

Environmental impact: Rockwool production is energy-intensive and has a higher carbon footprint compared to glass wool, which is made from recycled glass.

In conclusion, both rockwool and fiberglass have their own unique characteristics and can be used for various applications, but it's important to choose the right one based on the specific requirements of your project.