Wool made of stone

Stone wool is literaly wool made of stone. It can occure naturaly around volcanos. When molten lava is slung around at high speeds, it forms into small fibres. By nature, these fibres tend to flock around in tuffts that can be found hanging on the braches of trees around these volcanos. At ROCKWOOL, we have more than 80 years experience of mimicing this natural process. We use the tamed volcano principle to melt natural stones together with secondary raw materials. The lava is spun into fibres that are collected and shaped into different products. A resin is used to bind the fibres together. The resin that we use is durable and does not give off toxic gasses during a fire.

Features of stone wool

Stone wool production process