What is the difference between rockwool and glasswool?

Rockwool and glasswool are two common types of insulation materials used in the construction industry. Although they share similar functions, there are significant differences between them in terms of composition, properties, and applications.  So, what is the difference between rockwool and glasswool?

Composition: Rockwool is made from volcanic rock, which is melted and spun into fibers. Glasswool, on the other hand, is made from recycled glass that is melted and spun into fibers. The main difference in composition leads to variations in their physical and chemical properties.

Properties: Rockwool has higher thermal resistance than glasswool, making it more suitable for high-temperature applications. It also has better acoustic performance due to its denser structure. Glasswool, however, is more flexible and easier to work with during installation. It also has lower water absorption rates compared to rockwool.

Applications: Due to its superior thermal resistance and acoustic performance, rockwool is often used for roof insulation and soundproofing in buildings. Glasswool, with its flexibility and ease of installation, is commonly used for wall and floor insulation.

In conclusion, while both rockwool and glasswool serve as effective insulation materials, their differences in composition, properties, and applications make them suitable for different uses in the construction industry. Understanding these differences can help contractors and builders make informed decisions when selecting the appropriate insulation material for a project.