Rockwool and Glasswool are both popular insulation materials, but they have distinct differences: Rockwool: - Made from natural or synthetic fibers bonded together - Higher density, providing better sound absorption - More durable and resistant to compression - Can withstand high temperatures - Generally more expensive Glasswool: - Made from recycled glass fibers - Lower density, providing better thermal insulation - Less durable and more prone to compression - Can be less expensive - May cause skin irritation during handling Ultimately, the choice between Rockwool and Glasswool depends on your specific insulation needs and priorities.