# US 2014/0190107 A1 · Insulation element for a flat roof or a flat inclined roof, roofing system for a flat roof or a flat inclined roof and method for producing an insulation element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190107 A1 - Document ID: US20140190107A1 - Status: Published application - Kind: A1 - Application number: 14/342,807 - Filed: 2012-08-02 - Published: 2014-07-10 - Earliest claimed: 2011-09-06 - Assignees: Rockwool International A/S - Inventors: Hendricius Geradus Maria Beckers - Web page: https://patentgrep.com/patent/US20140190107A1 ## CPC - E04F 13/075: for insulation or surface protection, e.g. against noise or impact {(not used; for insulation, e.g. against noise E04B1/00)} - B32B 37/26: with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers - B32B 38/164: {Drying} - E04D 11/02: Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition (gravelling of flat roofs E04D7/00; venting or ventilation E04D13/17) - E04D 13/16: Insulating devices or arrangements in so far as the roof covering is concerned, {e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure} - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - E04D: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00) ## Abstract An insulation element for thermal and/or acoustic insulation of a flat roof or a flat inclined roof comprises a first layer made of mineral fibres, and a second layer made of at least one fabric, whereby the second layer is fixed to a major surface of the first layer by an adhesive. To reduce the adhesive costs and the risk of blistering the roof membrane at the application stage, the second layer is impregnated with a filler. The second layer in combination with the filler has a permeability allowing hot air gases to pass through the second layer and closing the second layer for the penetration of a glue or adhesive in the direction to the first layer. ## Claims ### Claim 1 An insulation element for thermal and/or acoustic insulation of a flat roof or a flat inclined roof, comprising: a first layer made of mineral fibres, especially stone wool fibres, second layer made of at least one fabric, especially a fleece being impregnated, whereby the second layer is fixed to a major surface of the first layer by an adhesive, wherein the second layer is impregnated with a filler and the second layer in combination with the filler has a permeability allowing hot aft gases to pass through the second layer and dosing the second layer for the penetration of a glue or adhesive in the direction to the first layer. ### Claim 2 (depends on 1) The insulation element according to claim 1, wherein the fleece is made of glass fleece especially a glass fleece having an area weight between 40 g/m2 to 80 g/m2, preferably between 55 g/m2 to 65 g/m2. ### Claim 3 (depends on 1) The insulation element according to claim 1, wherein the filler is an inorganic filler, especially lime. ### Claim 4 (depends on 2) The insulation element according to claim 2, wherein the glass fleece contains a water repellent agent. ### Claim 5 (depends on 1) The insulation element according to claim 1, wherein the adhesive contains an emulsified hydrophobing agent. ### Claim 6 The insulation element, wherein the adhesive is a pure PUF binder, especially with added silane. ### Claim 7 (depends on 1) The insulation element according to claim 1, wherein the first layer comprises at least two layers of different densities whereby the layer with the higher density is connected to the second layer. ### Claim 8 (depends on 1) A roofing system for a flat roof or a flat inclined roof comprising at least one insulation element according to claim 1, a substructure carrying the insulation element and a cold gluing roof membrane being fixed to the surface of the insulation element carrying the second layer with the filler. ### Claim 9 (depends on 1) A method for producing an insulation element according to claim 1, wherein a second layer of a fleece is coated with a filler and the second layer with the filler is adhered to the first layer by an adhesive. ### Claim 10 (depends on 9) The method according to claim 9, wherein the insulation element is cured in an oven after the second layer is adhered to the first layer. ### Claim 11 (depends on 10) The method according to claim 10, wherein an emulsified hydrophobing agent is added to the adhesive being applied to the second layer. ### Claim 12 (depends on 1) The insulation element according to claim 1, wherein the second layer in combination with the filler has a permeability between 250 m/h and 750 m/h, preferably between 400 m/h and 600 m/h, even more preferred of 500 m/h according to DIN EN ISO 9237 at dP of 200 Pa and on a test area of 20 cm2. ### Claim 13 (depends on 9) The method according to claim 9, wherein a second layer in combination with a filler is used having a permeability between 250 m/h and 750 m/h, preferably between 400 m/h and 600 m/h, even more preferred of 500 m/h according to DIN EN ISO 9237 at dP of 200 Pa and on a test area of 20 cm2.