What is mineral wool insulation made from?

Mineral wool insulation is primarily made from naturally occurring minerals or by-products from industrial processes, particularly the waste generated from steel production. This type of insulation is created by melting rock or slag at high temperatures and then spinning it into fine fibers. The result is a lightweight, fire-resistant material that provides excellent thermal insulation and soundproofing qualities.

This process takes advantage of the abundant resources of minerals like basalt or diabase, making mineral wool a sustainable choice for insulation. Furthermore, its performance characteristics, such as resistance to moisture and capability of withstanding high temperatures, contribute to its popularity in both residential and commercial applications.

The other materials listed, such as recycled plastic products, cement and glass fibers, or wood and paper material, do not accurately represent the composition of mineral wool insulation. These alternatives may have their own uses in insulation applications, but they do not define the unique properties and benefits associated with mineral wool.