General insulation slab PAROC eXtra is made of non-combustible stone wool and used for thermal, sound and fire insulation applications, such as walls, attics and floors, in all kinds of buildings. The highly insulating general insulation slab is soft and rigid. The slab is easy to handle, cut and install for different kinds of applications. The insulation doesn't settle, shrink or loose its insulation properties during its lifetime. The greater density of the slab is not prone to convection so the thermal resistance of the product is maintained even during extremely cold winters.