Yes, ceramic fiber insulation can be applied to walls, ceilings, and floors. It is a versatile material known for its high-temperature resistance and thermal insulation properties. It is commonly used in various construction applications to reduce heat transfer, conserve energy, and maintain comfortable indoor temperatures. However, it's important to follow proper installation guidelines and safety measures, as ceramic fiber insulation can be hazardous if inhaled or if skin comes into prolonged contact. It is often used in industrial settings and should be installed by professionals to ensure safety and effectiveness.