What material is primarily used for insulation in buildings that may contain asbestos?

The material primarily used for insulation in buildings that may contain asbestos is chrysotile, which is a type of asbestos. Chrysotile is the most common form of asbestos and has historically been used in a variety of building materials, including insulation due to its fire-resistant properties and thermal stability. It is often found in several forms, such as pipe insulation, boiler insulation, and sprayed coatings, making it critical for asbestos investigators to identify and manage potential risks associated with its presence in older structures.

Fiberglass, mineral wool, and polyurethane foam are alternative insulation materials that do not inherently contain asbestos. While they are commonly used in modern construction and insulation applications, they do not carry the same asbestos-related health risks that chrysotile does. Recognizing the various materials used in construction and their potential for containing asbestos is essential for ensuring safety and compliance with regulations.