Students gathered in the Materials Lab to learn about Rockwool, a sustainable form of stone wool insulation made by spinning minerals from molten rock and recycled metal slag. The result is a durable material that resembles cotton-candy and can be further processed into blanket or board products. The material can be recycled multiple times, though currently closed-loop recycling is only available in Europe.
The material is sound-proof, water-repellent, and fire-resistant up to 1200 degrees. Rockwool is non-combustible, and when combined with other non-combustible products, passes the National Fire Protection Association (NFPA) 285 test. Additionally, Rockwool insulation is commonly used for structures that require acoustic materials, such as healthcare and educational buildings. Even when "drenched," Rockwool retains its R-value and water resistance, making it difficult for mold and mildew to take over.
More information about Rockwool can be found here.