What characterizes the thermal properties of mineral wool?

Mineral wool is well-regarded for its exceptional thermal resistance properties. This material is designed to minimize the transfer of heat, making it an effective insulator. High thermal resistance means that mineral wool can significantly reduce the flow of heat between different environments, contributing to energy efficiency in buildings.

With its fibrous structure, mineral wool traps air within its fibers, which plays a crucial role in its ability to resist heat transfer. This characteristic is vital for applications where maintaining temperature is essential, such as in insulation for roofs, walls, and floors.

In contrast, the other options suggest characteristics that would undermine its effectiveness as an insulator. High thermal conductivity and low thermal resistance would indicate a material that allows heat to pass through easily, which is not true for mineral wool. Additionally, the claim of having no thermal resistance contradicts the fundamental purpose of this material, which is to provide effective insulation against heat flow.