Wool insulation is a sustainable choice due to its renewable and biodegradable nature, low embodied energy, and carbon-sequestration ability. It offers energy efficiency, is non-toxic, and fire-resistant, promoting indoor air quality and safety. With its durability and potential for recycling, it reduces waste and extends its lifecycle. Local sourcing and certifications further enhance its sustainability. This natural fiber stands out as an eco-friendly insulation option that combines excellent thermal performance with environmental responsibility, making it an attractive choice for sustainable building projects.