Roofing System And Insulation Element For A Flat Roof Or A Flat Inclined Roof

A roofing system for a flat roof or a flat inclined roof of a building with a thermal and/or acoustic insulation, comprising a structural support, a deck, a waterproof membrane, at least one insulation element being a bonded mineral fibre product made of mineral fibres, and a cured aqueous binder composition, wherein the aqueous binder composition prior to curing comprises a component (i) in form of one or more oxidized lignins, a component (iia) in form of one or more modifiers, and wherein the insulation element has a bulk density between 70 kg/m3 and 250 kg/m3.

An insulation element suitable for use in a roofing system for a flat roof or a flat inclined roof of a building with a thermal and/or acoustic insulation, the roofing system comprising a structural support, a deck, a waterproof membrane, and at least one said insulation element, wherein said insulation element is made of mineral fibres, and a cured aqueous binder composition, wherein the aqueous binder composition prior to curing comprises a component (i) in form of one or more oxidized lignins, a component (iia) in form of one or more modifiers, and wherein the insulation element has a bulk density between 70 kg/m3 and 250 kg/m3.