An A1 Non-Combustible Glass Mineral Wool slab, manufactured using Knauf Insulation’s unique ECOSE® Technology, and is specifically designed for use as full fill insulation in masonry cavity walls. It has very high levels of thermal resistance allowing compliance with the relevant Building Regulations. Cavity barriers are not required with non-combustible full fill insulation, minimising the risk of fire spreading through a cavity. BBA certified for use in all exposure zones, including those in very severe areas. Slabs are sized to fit between wall ties without the need for retaining discs.