Which of the following is a characteristic of non-combustible materials?

Non-combustible materials are defined by their resistance to fire; they do not ignite easily and do not support combustion. This characteristic is crucial in construction, particularly in building design and fire safety, as it helps contain fires and prevent their spread. Non-combustible materials contribute to the overall safety of a structure by reducing the likelihood of a fire starting and by slowing down any potential fire progression, ultimately protecting both life and property.

When evaluating the other options, it’s important to understand how they relate to the properties of non-combustible materials. Using non-combustible materials for interior finishes is typically limited because many such finishes are specifically designed to enhance aesthetic appeal while still complying with fire safety standards. Non-combustible materials also do not necessarily retain heat effectively; in fact, they may reflect heat rather than absorb it. Additionally, non-combustible materials are generally considered to be durable, often outperforming combustible materials in terms of longevity and structural integrity. This durability makes them particularly suitable for applications where fire resistance is critical.