Which material is commonly used to produce commercial insulation today?

The use of mineral or vegetable fibers for commercial insulation is prevalent due to their excellent thermal properties and a sustainable approach to insulation. Mineral fibers, such as fiberglass and rock wool, provide effective thermal resistance, helping to maintain comfortable indoor temperatures and reduce energy costs. Meanwhile, insulation made from vegetable fibers, such as cellulose, is derived from recycled paper products, making it an environmentally friendly choice.

In contrast, while plastic composites may offer lightweight and waterproof properties, they are less commonly used specifically for insulation purposes. Concrete and masonry materials, although durable and strong, do not provide effective insulation on their own without additional insulating layers. Similarly, metallic materials are typically not used for insulation due to their thermal conductivity, which actually promotes heat transfer rather than insulation.