Mineral Wool Insulation

Insulation manufactured from rock wool (stone wool) or glass wool fibres, available as rolls, slabs, or loose fill. Thermal conductivity is typically 0.032–0.044 W/mK. Mineral wool is vapour-permeable, fire-resistant, and offers good acoustic performance. It is widely used in pitched roof insulation between rafters, stud walls, and as cavity slab insulation in new-build cavity walls.