Roofing system and insulation element for a flat roof or a flat inclined roof
AssigneeRockwool A/S
InventorsDorte Bartnik Johansson, Miroslav Nikolic
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Abstract
The disclosure relates to a roofing system for a flat roof or a flat inclined roof of a building with a thermal and/or acoustic insulation, consisting of a structural support, a deck, optionally a vapour control layer, a waterproof membrane and at least one insulation element being a bonded mineral fibre product made of mineral fibres, preferably stone wool fibres, and a cured aqueous binder, whereby the cured aqueous binder prior to curing comprises a component (i) in form of one or more oxidized lignins, a component (ii) in form of one or more cross-linkers, a component (iii) in form of one or more plasticizers, and whereby the insulation element has a bulk density between 70 kg/m3 and 250 kg/m3.
Claims19
A roofing system for a flat roof or a flat inclined roof of a building with a thermal and/or acoustic insulation, consisting of a structural support, a deck, optionally a vapour control layer, a waterproof membrane and at least one insulation element being a bonded mineral fibre product made of mineral fibres, and a cured aqueous binder composition, whereby the aqueous binder composition prior to curing comprises a component (i) in form of one or more oxidized lignins, a component (ii) in form of one or more cross-linkers, a component (iii) in form of one or more plasticizers, and whereby the insulation element has a bulk density between 70 kg/m3 and 250 kg/m3.
An insulation element for 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 including a structural support, a deck, optionally a vapour control layer, a waterproof membrane, and at least one said insulation element, the insulation element comprising:
- mineral fibres and a cured aqueous binder composition, whereby the aqueous binder composition prior to curing comprises a component (i) in form of one or more oxidized lignins, a component (ii) in form of one or more cross-linkers, a component (iii) in form of one or more plasticizers and whereby the insulation element has a bulk density between 70 kg/m3 and 250 kg/m3.
An insulation element for 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 including a structural support, a deck, optionally a vapour control layer, a waterproof membrane, and at least one said insulation element, the insulation element comprising:
- a first layer comprising stone wool fibres and a binder and a second layer made of a glass fleece having a tensile strength, whereby the second layer is fixed to a major surface of the first layer by an adhesive, whereby the first layer is made of at least one lamella having a fibre orientation predominantly perpendicular to major surfaces of the second layer, and whereby the first layer contains a cured binder,
- wherein
- the adhesive is arranged partly in an area between fibres close to the major surface of the first layer directed to the second layer and in an area close to the major surface of the second layer directed to the first layer so that the adhesive connects the first layer and the second layer in such a way that forces directed perpendicular to the second layer can be compensated by the tensile strength of the second layer in combination with the adhesive and/or the deflection of the fibres of the first layer causing a maximum deformation of ≤5% of the thickness of the insulation element.
Dependencies are inferred from the claim text.