Are there any alternative materials for using ceramic fibers in building insulation?

Yes, there are several alternative materials to ceramic fibers for building insulation. These include mineral wool, which is made from molten rock or slag and provides good thermal insulation; polystyrene foam, known for its lightweight and low thermal conductivity; and cellulose insulation, made from recycled paper products and offering good sound absorption. Additionally, there's fiberglass, which is durable and resistant to heat, and aerogel, a high-performance insulator with low thermal conductivity. Each material has its own set of advantages and disadvantages, and the choice often depends on factors like cost, environmental impact, and specific insulation requirements.