What is the commonly used insulation material for furnaces and pipes?

The commonly used insulation material for furnaces and pipes is mineral wool. This material is preferred for several reasons. Mineral wool, also known as rock wool or slag wool, offers excellent thermal insulation properties, making it highly effective in preventing heat loss. It is also fire-resistant, which is crucial in high hazard facilities where the risk of fire is a significant concern.

Additionally, mineral wool is not only resistant to moisture but also does not promote the growth of mold or mildew, making it suitable for various environmental conditions. Its sound-absorbing qualities add to its effectiveness in industrial settings where noise reduction is desirable.

Fiberglass, another common insulation material, is effective as well but does not have the same level of fire resistance or sound absorption as mineral wool. Asbestos, while historically used for its insulation properties, is no longer a preferred option due to its health risks, including carcinogenic effects. Polyurethane foam, while offering good insulating properties, does not have the same heat resistance as mineral wool and can be flammable. Therefore, mineral wool is the preferred choice for high hazard environments.