MINERAL FIBRE INSULATING BOARD COMPRISING A RIGID SURFACE LAYER, A PROCESS FOR THE PREPARATION THEREOF AND A USE OF THE INSULATING PRODUCT FOR ROOFING AND FACADE COVERING

摘要

The present invention relates to a mineral fibre insulating product comprising a mineral fibre insulating layer and at least one rigid surface layer, said surface layer comprising mineral material bound together by a binding agent wherein said insulating layer comprising mineral fibres and a binding agent has a mean density of 50-300 kg/m<3> and wherein said rigid surface layer comprising a mineral material and an organic binding agent has a mean density of at least 450 kg/m<3>. The invention also relates to a process for the preparation of the insulating product. The product is highly suitable for roofing and facade purposes.