Mineral wool insulation, also known as rock wool or slag wool, is a type of insulation made from natural or recycled materials. It is created by melting rocks or industrial byproducts and then spinning them into fibers. This material is known for its excellent thermal resistance, soundproofing qualities, and fire resistance, making it a popular choice for both residential and commercial buildings. In addition to its insulating properties, mineral wool is also resistant to moisture and mold, which helps improve indoor air quality. It is available in various forms, including batts, rolls, and loose-fill, allowing for versatile applications in walls, attics, and floors.