The Origins and Properties of Stone Wool
Stone wool (or mineral wool) was discovered on the islands of Hawaii at the beginning of the century. It occurs there naturally as a byproduct of volcanic activity.
In its manufactured state, stone wool combines the power of rock with the characteristics of typical insulation wool. And, thanks to its non-directional fiber orientation, it also exhibits some unique and valuable characteristics.
- Unique non-directional structure of ROXUL stone wool insulation is denser than traditional insulation products
- Non-directional fibres help to absorb acoustic waves and can reduce the intensity and propagation of noise
- Effectively reduces airflow and sound transmission
- Higher air flow resistivity means better sound attenuation
- ROXUL stone wool can withstand temperatures up to 2150º F (1177º C); consequently, it does not contribute to the development and spread of fire or the release of toxic gases
- ROXUL stone wool is water repellent yet vapour permeable
- The long-term R-value of stone wool is unaffected by moisture over time, due to the inherent drying potential of the product
- Completely resistant to rot, mildew, mould and bacterial growth - contributing to a safer indoor environment
- Retains its characteristics over time
- Minimal changes in size and performance are evident with changes in temperature and humidity