Achieve professional-grade performance with Rockwool 8 lb Density Stone Wool Insulation. Engineered for applications where superior acoustic and thermal control is non-negotiable, this high-density insulation provides the ultimate solution for creating a safer, quieter, and more energy-efficient environment. Unmatched Sound and Thermal Control The exceptional mass and density of our 8 lb stone wool make it the premier choice for soundproofing. Its rigid structure excels at absorbing sound waves and blocking noise transmission between rooms, making it ideal for home theaters, studios, offices, and any space where quiet is essential. This density also translates to enhanced thermal performance, helping to drastically reduce your heating and cooling costs while maintaining a comfortable indoor climate year-round. The Ultimate in Fire Safety and Durability Made from natural stone, Rockwool is non-combustible and can withstand extreme temperatures, giving you invaluable protection and peace of mind. Unlike other insulations, it won't produce harmful smoke or contribute to the spread of flames. The 8 lb density also ensures the insulation is durable, sag-resistant, and will maintain its shape and performance for decades. It is naturally resistant to moisture.