FI3978703T3 - A vapour controlling insulation structure for a flat or low slope warm roof and method for installing the same - Google Patents

Claims (12)

1 EP3 978 703 ANTI-FURY INSULATION STRUCTURE FOR FLAT OR SLOW PUMP ROOFS AND METHOD FOR INSTALLING IT PATENT CLAIMS 1. A vapor-blocking insulation structure (1) for a flat or gentle warm roof with a load-supporting structure (2), which insulation structure comprises a first insulation layer (3), a vapor-blocking membrane (4) and a second insulation layer (5), whereby said vapor-blocking membrane (4) is located between the first insulation layer (3) and the second insulation layer (5), wherein said second insulation layer (5) has an upper surface (6) with an area (A) adapted for installing the roof membrane, wherein the first insulation layer (3) has an intermediate surface (7 ), wherein said intermediate surface (7) is adapted for the installation of said vapor barrier membrane (4), and wherein the first insulation layer (3) has a thickness of (t) and consists of one or more insulation plates (8), characterized in that said second insulation layer (5 ) consists of two bottom layers (9) stacked on top of each other, both of which have essentially the same thickness (t) as the first insulation layer (3). 2. A vapor-blocking insulation structure (1) according to claim 1, where two — stacked lower layers (9) each consist of one or more insulation boards (8) that are of the same material and have the same material dimensions and material properties as the insulation boards (8) that form of the first floor (3). 3. A vapor-blocking insulation structure according to claim 2, where — the insulation boards (8) are box-shaped and, with regard to the properties and dimensions of the material, are symmetrical with respect to the center point. 2 EP3 978 703 4. A vapor-blocking insulation structure according to claim 2 or 3, where both lower layers (9) of the second insulating layer (5) have an intermediate surface (10) of the lower layer, the surface area of each of which is equal to the surface area (A) of the upper surface (6). 5. A vapor-blocking insulation structure according to one of the preceding claims, wherein the insulation board is made of mineral wool, preferably glass wool. 6. Vapor-blocking insulation structure according to one of the preceding claims, in which the load-supporting structure (2) is formed from profiled steel sheets. 7. A vapor-blocking insulation structure according to one of the preceding claims, wherein the compressive strength of said insulation board in the direction perpendicular to the upper surface (6) is more than 20 kPa, preferably 25-80 kPa. 8. A vapor-blocking insulation structure according to one of the preceding claims, in which at least two insulation boards (8) are adapted to be placed directly on the load-supporting structure (2), in which case the at least two insulation boards (8) in question are placed next to each other so that they form the first insulation layer (3), with — an intermediate surface (7) with an area (A) adapted for the installation of a vapor barrier membrane (4), where an additional number of insulating sheets (8) are placed next to each other so as to form the lower layer (9) as the lower part of the second insulating layer (5), which forms an intermediate surface (10) of the lower layer adapted to place an additional number of side-by-side insulating sheets (8) so as to form a second lower layer (9) which is — the upper half of the second insulating layer (5) and an upper surface (6) with an area (A) adapted for the installation of the roof membrane. 9. A vapor-blocking insulation structure (1) according to one of the preceding claims, wherein the R-value of said one or more insulation plates (8) is one third of the required R-value of the insulation layers (3,5) in the vapor-blocking insulation structure (1). 10. Vapor-blocking insulation structure (1) according to one of the preceding claims, wherein the R-value of the vapor-blocking insulation structure (1) is 1/0.15 m2K/W. 11. A method for laying a vapor-blocking insulation structure (1) on a load-supporting structure (2), which method comprises successive steps in which 3 EP3 978 703 one or more insulation boards (8) with a thickness of (t) are placed on a load-supporting structure (2), such as the profiled steel structure of a warm roof, thus forming an intermediate surface (7); placing a vapor barrier film (4) on the intermediate surface (7); one or more insulation boards (8) with a thickness of (t) are placed on the vapor barrier film (4), thus forming the intermediate surface (10) of the lower layer; and placing one or more insulation boards (8) with a thickness of (t) on the intermediate surface (10) of the lower layer, forming an upper surface (6) with an area (A) adapted for installing the roof membrane. 12. The method according to claim 11, where the insulation boards (8) of the two lower layers are taken from the same pallet and placed in the second insulation layer (5).