EP2504501A2

EP2504501A2 - Heat insulation system for a building shell

Info

Publication number: EP2504501A2
Application number: EP10790346A
Authority: EP
Inventors: Jörn SCHRÖER; Janine Wagner-Dittrich; Norbert Klingelhage; Heinz Peter Raidt; Dirk Schöbe; Arne Witzke; Michael Wolf
Original assignee: Ewald Doerken AG
Current assignee: Ewald Doerken AG
Priority date: 2009-11-25
Filing date: 2010-11-24
Publication date: 2012-10-03
Also published as: DE102009054432A1; WO2011063938A3; WO2011063938A2

Abstract

The invention relates to a heat insulation system (1) for a building shell, comprising at least one insulation board (5) having at least one vacuum insulation panel (6). According to the invention, an auxiliary batten (9) is provided on at least one edge of the insulation board (5) for connection to the base surface.

Description

Thermal insulation system for a building envelope

The invention relates to a thermal insulation system for a building envelope, with at least one insulating panel having at least one vacuum insulation panel.

Thermal insulation reduces the passage of thermal energy through a component. The targeted use of insulating materials on the building can reduce the use of heat energy to a minimum. To save the geo-ecological motives (national and international climate protection goals) heat energy, come also the economic motives (with rising energy prices). In principle, there are different approaches to save energy. This includes, inter alia, a reduction in the energy requirement, which means e.g. to reduce the heating in unused rooms. Furthermore, an increase in efficiency can be achieved by e.g. Heat recovery or, as already mentioned, by a very good thermal insulation. Investing in insulation that results in higher energy efficiency is particularly worthwhile in the areas of walls and roofs, since here the largest components are present on the building. In general, the heat contactor on the building envelope offers the greatest savings potential.

The energetic limit values for the new building or also for the renovation of existing buildings are subject to ever more stringent requirements. Conventional insulation materials with a thermal conductivity of 0.040 W / m-K must be applied in large layer thicknesses in order to meet the U-value (heat transfer coefficient) requirements defined in Germany by the Energy Saving Ordinance (EnEV).

The heat transfer coefficient U is defined as follows: wherein the heat transfer resistance R is formed in a simplified representation of:

CONFIRMATION COPY

R _se = external contact resistance in m ² -K / W

R _S i = internal contact resistance in m ² -K / W

d = thickness of the respective layer in m

λ = thermal conductivity of the respective layer in W / m-K

Problems with the large layer thicknesses arise not only for aesthetic reasons on the building, but also from a constructive point of view. In the roof area in a subsequent insulation with the conventional methods, such as doubling or Aufsparendämmung with polyurethane (PUR) or polyisocyanurate (PIR), connections to windows, dormers, antennas and, for example, fan very expensive and costly adjusted over 10 to 20 cm in height become.

The solution to the problem of excessive insulation thickness in construction is the use of vacuum insulation panels (VIP) in the construction industry. The very low thermal conductivity, for example, 0.008 W / m-K (as a design value) of such vacuum panels has a great advantage in use in construction. The component height remains extremely low compared to constructions with conventional insulation materials.

Thermal insulation systems with VIP (as a central component) for the rafter insulation with the lowest construction height are suitable, for example, for the subsequent insulation in the case of renovation. U values of 0.24 to 0.08 W / m ² K, particularly preferably up to values of 0.10 W / m ² K on the pitched roof, can be achieved by the system with very low installation heights. The thermal conductivity level of the VIP used should be between 3 and 10 m W / mK, more preferably between 6 and 8 m W / mK.

The serious influence of the thermal conductivity of the insulating material is shown by a simple example of a roof structure (in the calculation of the insulation thicknesses according to DIN): with a 100% coverage of an exemplary roof surface with PUR (WLS 030) or VIP (WLS 008) and a desired U-value of, for example, 0.20 W / m K, a thickness of 5.5 cm is required for insulation with PUR panels, whereas only 1.5 cm in height would be required for VIP board occupancy.

However, VIP as insulating elements have some special features when used in construction. A major problem is that the elements are not freely cut to size. This main problem means that transitions to other components must be accurately sized and then the VIP ordered to size. Otherwise, gaps between the VIP and the adjacent component remain open, resulting in thermal bridges at the sites concerned.

In addition, VIPs on the surface are sensitive to damage to the high-barrier film. Scratches from splinters or stones on the surface of the components, falling tool or building material almost always result in severe damage to the high-barrier film and thus the loss of vacuum, coupled with a strong reduction in insulation performance.

Furthermore, VIPs can not be fixed by conventional fasteners such as screws or nails. Elaborate constructions or special penetrations formed in the VIP manufacturing allow the systems on the market to be attached. Alternatively, when used on the wall, the VIP is glued over its entire surface. This full-surface bonding can not be used in an application, for example, on the roof, if there is no full-surface formwork.

Object of the present invention is to provide a thermal insulation system of the type mentioned, especially for use on the pitched roof or a facade, available that can be easily and quickly fastened, at the same time the risk of damage should be reduced.

To achieve the above object is in a thermal insulation system of the type mentioned at least one edge side of the insulation board an auxiliary battens as an integral part of the insulation board for connection intended for the underground. By the auxiliary battens, which is preferably arranged next to or in a plane with the VIP and firmly connected to this, in particular glued, it is possible to attach the entire insulation board in a simple manner. Thus, the insulation board can be attached by screws or nails to rafters of a roof or in the case of a facade on a wooden stand. It is understood that the insulation board on the auxiliary battens, which is an integral part of the insulation board, can be attached to any surface. Although below only the attachment to rafters, especially in a pitched roof, will be discussed, it is understood that this ultimately represents only a preferred embodiment. However, the relevant statements apply in the same way for flat roofs or facades, if a corresponding substructure, especially in the form of a wooden stud work, is provided.

Preferably, the thermal insulation system is mounted on a pitched roof, that the auxiliary battens is arranged at right angles to the rafters, so runs horizontally. By using correspondingly long insulation boards or auxiliary battens, it is then possible to fasten the system safely and easily on objects with different rafter spacings.

It is particularly advantageous, especially in pitched roofs, when a counter battens are arranged over the insulating board in the longitudinal direction of the rafters and fastened by the auxiliary battens. The running in the rafter longitudinal direction counter battens then ensures a further attachment of the thermal insulation system according to the invention. Especially in this case, the present invention then also relates to a building envelope with a thermal insulation system of the type in question.

In the case of the insulation board according to the invention, it is preferred that a marking indicating the course and the arrangement of the auxiliary battens be provided on its outside. This marking can be formed for example as a colored edge and / or a change in the surface structure. As a result, it can be seen during assembly that the fasteners, such as nails and screws, can be used in the marked area without the risk of damaging the VIP. It is advantageous, moreover, to provide at least one receiving profile for an adjacent insulating panel on the insulating board in the area of the auxiliary battens. Such a profile has the advantage that the laying of further insulation boards is considerably facilitated by the receiving profile, as laid for laying the adjacent insulation board only with its lower, the auxiliary battens opposite end face in the receiving profile and then attached itself via its own auxiliary battens. In this way, a secure attachment results on opposite sides of the insulation board.

In principle, it is possible that an insulating board with an auxiliary battens has only one VIP. However, it is also possible without further that an insulating board with a Hilfslattung having a plurality of VIP. The individual VIPs can be arranged side by side in a row. But it is also possible to arrange a plurality of rows with one or more VIP. The division into several VIP segments has the advantage that, first of all, only one segment is ventilated in the event of unintentional damage to a VIP, while the undamaged segments continue to function. In certain applications, such as hipped roofs, it may be necessary that the thermal insulation system or the relevant peripheral insulation board must be cut accordingly. With segmented VIP or a plurality of VIP, the necessary cutting can then take place, so that only the cut VIP is ventilated.

In an alternative embodiment of the present invention, a rail system is provided to solve the aforementioned object, having a plurality of rails to be arranged in parallel, each rail has at least one longitudinal side a longitudinal receptacle for inserting an insulating board and wherein the length of a rail the multiple of the length of an insulating board corresponds, so that at least two insulation boards are used in a pair of rails. In such a thermal insulation system, the rails are fastened to each other at the necessary distance to the rafters and form a slot, in which the individual insulation boards of the thermal insulation system are sequentially and in particular without intermediate separation threaded. The rails can in principle be arranged in the longitudinal direction of the rafter, but preferably transversely thereto. the. The arrangement of the rails transversely to the rafter longitudinal direction has the advantage that the width of the insulation boards is ultimately independent of the rafter spacing. The immediate arrangement of the insulation boards side by side within the rail system lead straight with appropriate overlapping edge formation of the insulation boards, which will be discussed in more detail below, to heat losses are kept very small at the junctions of adjacent insulation boards.

The following features relate to the heat system according to the invention, regardless of whether an auxiliary battens for attachment or a rail system is provided.

To protect the VIP, the insulation board has at least one protective layer applied to the VIP at the bottom and / or at the top. On the underside, the surface in front of the rafter and on the top side are protected against possible damage during processing. For example, panels made of insulating materials (such as PUR, EPS or XPS) are glued to the VIP or the VIP is completely foamed into the insulating materials (such as EPS or PUR). Alternatively, a plastic sheet with a robust or solid cover layer as a final roof seal or roofing or flexible insulation, such as a Unterdeckbahn, z. B. DELTA-Maxx Comfort, to protect the surface.

Another advantage in connection with the present invention is that the uppermost protective layer has an overlap with at least one adhesive edge on at least one edge side of the insulating board. By such an overlapping cover sheet with self-adhesive the individual insulation boards can be glued together. This bonding allows rapid production of the airtight layer on the component and between the individual elements. At the same time, a weather-proof outer surface is quickly produced by the overlapping of the elements when laying.

In a further preferred embodiment of the invention, the insulation board is profiled on at least one end face to form a stepped rebate or a tongue and groove joint with an adjacent insulation board. Alternatively, it is possible to construct a marginal section from a compressible to provide the same material, in particular of a soft PU foam. The possibly multiple overlapping of the edge design in the form of a stepped rebate or a tongue and groove connection as well as by the soft compensating material prevents increased energy exchange at the joints. Thus, in the case of a tongue-and-groove variant, the edge may consist of two VIPs bonded to one another with a surface protection layer made of PUR, IPX or XPS. In the case of a stepped rebate, for example, a protruding protective layer may be provided, which may consist of PUR, EPS or XPS. In any case, increased heat transfer at the joints of the individual elements are avoided by such edge designs.

Preferably, the length of an insulating panel is at least twice the sum of the clear rafter spacing and the rafter width. Plate sizes between 2700 mm to 500 mm in length, 1700 mm to 200 mm in width, are preferred. Particular preference is given to dimensions between 2500 mm to 500 mm in length and 1400 mm to 300 mm in width. Depending on the U-value, the thicknesses of the thermal insulation system or of the insulation board are between 70 mm and 5 mm, particularly preferably between 60 mm and 10 mm. The VIP should be designed so that the pressure increase in the VIP between 0.3 to 3 mbar / year, preferably 0.5 to 2 mbar / year, so that there is a long period of use. Insulating boards with the aforementioned dimensions initially have the advantage that they are still manageable on the roof and at the same time have only a few joints per unit area to adjacent insulation boards. In addition, insulation boards of such a length, especially in connection with the auxiliary battens, offer the advantage that they can be attached to at least two rafters. As a result, a secure attachment is ensured in each case in connection with the auxiliary battens.

Since roofs usually have a number of details, such as windows, chimneys, fans, antennas and / or dormers, where adjustments are required as well as often on the edge areas, throats or slopes, such as on a hipped roof, it is advisable that the thermal insulation system according to the invention has at least two insulation boards with different sized plate sizes. A system of different plate sizes allows the optimum utilization of the area to be occupied. Advantageously, for example, a system of each of the halved plate sizes be used. For example, two to five different plate sizes may be present, preferably two to three different plate sizes should be present.

Moreover, it is of particular advantage if the thermal insulation system according to the invention has at least one further insulating board, in particular made of PUR, EPS or XPS, but without VIP. This further insulation board is a cutable auxiliary plate in order to adapt the thermal insulation system according to the invention to details of the aforementioned type. The auxiliary plates are in the same thicknesses as the insulation boards with VIP. If the insulation boards have additional protective layers as actual system boards, the auxiliary boards should also have the same overall thickness. The thickness of the auxiliary plates is between 5 and 200 mm, preferably between 10 and 100 mm and particularly preferably between 20 and 70 mm. The degree of coverage of the auxiliary plates should be kept as low as possible, since the poorer thermal insulation properties of the material of the auxiliary plates increases the total U-value for the insulated component. With an exemplary roof structure, the following values result in the U-value calculation according to DIN EN6946:

12 cm rafter height (10 cm rafter width), 60 cm light measure between the rafters

Construction: gypsum plaster, wood wool lightweight construction (HWL) - plate, vapor barrier, rafters with mineral wool in the intermediate space (WLS 035), VIP or auxiliary plate and underlay membrane.

Degree of coverage of the auxiliary plate made of PUR (WLS 024) 2 cm thickness = 15%

Degree of insulation board insulation with VIP (WLS 008), in 2 cm thickness = 85%

In this example, the calculated U value is 0.19 W / m ² K.

From the above calculation it follows that a renovation of roofs under the required heat transfer coefficient without Another is possible, at the same time the lowest installation height compared to conventional Aufsparrendämmungen be achieved.

As a result, a thermal insulation system is provided by the invention, which - depending on the structure of the system - a comparatively low surface weight between about 3 to 8 kg / m. The system element according to the invention of the insulating board with VIP is available to the processor as a unit and does not have to be compiled time-consuming on the job site in complex individual steps. The combination of lightweight materials allows easy handling on the pitched roof. The combination of system elements of different sizes and at least one auxiliary plate that can be cut guarantees trouble-free installation into a wide variety of component surfaces with a wide variety of interruptions, which can be present on the pitched roof or the point of use.

Moreover, to achieve a defined substrate, it is advisable to provide at least one auxiliary foil to be laid beneath the insulating panel to compensate for unevenness in the substrate. The auxiliary film may consist of a flexible laminate. The laminate consists of one to ten layers, preferably two to seven, more preferably two to five layers. In this case, films, fabrics, nonwovens or laminates of various materials in question, for example, HD or LD polyethylene, polyvinyl chloride, polypropylene, polystyrene, polycarbonate or polyester, for example. The breaking strength of the materials should be between 200 and 800 N / 5 cm, preferably between 250 and 750 N / 5 cm and more preferably between 300 and 700 N / 5 cm. As already stated, the auxiliary foil compensates for unevennesses in the area of the rafters, especially in the intermediate rafter spaces, and thus enables a simple and time-saving laying of the thermal insulation system. Especially in areas with a high concentration of tailored auxiliary plates or pieces, such as in the throat, the auxiliary film allows easy installation of the auxiliary plates. The thickness of the auxiliary film is more than 0.05 mm, preferably 0, 1 to 1 mm and more preferably 0, 15 to 0.5 mm.

Moreover, the present invention also relates to a method for attaching the thermal insulation system according to the invention in a building envelope. Preferably, the laying in the Aufsparrenbereich from bottom to top of the roof. The system or the insulation boards are attached directly to the rafters with the auxiliary battens or the rail system. Thereafter, the application of the onterlattung takes place and in turn the battens are applied for the laying of the roof tiles. In certain embodiments, in particular in the mentioned solid cover layer, which ultimately forms the final roof seal or roofing, however, a counter battens and a battens is no longer applied, since the solid cover layer already forms the outermost layer.

Hereinafter exemplary embodiments of the invention will be described in more detail with reference to the drawing. All described and / or illustrated features, alone or in any combination form the subject of the present invention, even if the features concerned are given in conjunction with other features. It shows

1 is a cross-sectional view of a vacuum insulation system as Aufsparrendämmung,

Fig. 2 is a sectional view of Fig. 1 along the section line II-II

Fig. 1,

Fig. 3 is a sectional view of FIG. 1 along the section line III-III

Fig. 1,

4 is a view of an embodiment of an insulating board as a schematic sectional view,

5 is a view of another embodiment of an insulating board as a schematic sectional view,

6 is a view of another imple mentation of an insulating board as a schematic sectional view,

7 is a view of another embodiment of an insulating board as a schematic sectional view, a view of another embodiment of an insulating board with auxiliary battens as a schematic sectional view, a view of another embodiment of an insulating board with auxiliary battens as a schematic sectional view, a view of another embodiment of an insulating board with auxiliary battens as a schematic sectional view, a view of another imple mentation form of an insulating board with auxiliary battens as a schematic sectional view, a plan view of an insulating board with an offset upper layer, a plan view of another embodiment of an insulating board with an offset upper layer, a schematic cross-sectional view of two abutting insulating panels, a cross-sectional view of another embodiment with two adjacent arranged insulating panels, a Cross-sectional view of another imple mentation form with two adjacently arranged insulation boards, a plan view of an insulation board with a VIP, a top view of egg ne insulation panel with three VIPs in a row, a top view of an insulation panel with four VIPs arranged in two rows, 20 is a schematic representation of a thermal insulation system with a rail system,

Fig. 21 is a schematic representation of a roof covering by means of the thermal insulation system according to the invention and

Fig. 22 is a schematic representation of a wall structure with the thermal insulation system according to the invention.

In FIGS. 1 to 3, an inventive thermal insulation system 1 is shown using the example of a rafter insulation. In the relevant, to be insulated building part of the building envelope, not shown, in the present case is a pitched roof. It is understood, however, that the invention can also be implemented in every other roof, in particular a flat roof, or in the area of a facade.

In the illustrated embodiment, the gap 2 between two rafters 3 with an insulating material 4, which in this case is mineral wool, insulated. In the present case, the thermal insulation system 1 has a plurality of insulating panels 5, each having at least one vacuum insulation panel 6, hereinafter referred to as VIP 6. It should be noted that the thermal insulation system 1 in the simplest case, only a single insulation board 5 has. In this case, the thermal insulation system 1 corresponds to the insulation board 5. Preferably, however, a set or a unit of a plurality of insulation boards 5, in particular different size, provided.

The individual VIP 6 usually have a thickness between 10 and 60 mm, preferably between 20 and 40 mm. Below the VIP 6 is a lower protective layer 7 made of a solid plastic sheet, which may be a lower cover sheet. Above the layer of the VIP 6 there is an upper protective layer 8, which in the present case has a thickness between 10 and 60 mm and preferably between 20 and 30 mm. The upper protective layer 8 is preferably made of polyurethane. The individual insulation boards 5 are fastened to the rafters 3 by way of screws 10 via a respective auxiliary battens 9 provided on the individual insulation boards. The attachment is carried out with the interposition of the lower protective layer 7 and the upper protective layer 8. The auxiliary battens 9 not only serves to attach the respective insulating panel 5, but also represents a certain protection for the VIP 6 at least in the edge region.

It is not shown that in the region of the crossing points between the auxiliary battens 9 and the rafters 3 then a counter battens is screwed. This is laid vertically over the insulation, so runs in the spar longitudinal direction and thus serves as a fixture for the insulation boards 5. The screws required for this purpose are preferably at least 6 mm in diameter. After attaching the counter battens a battens are attached to the counter battens. The battens runs - like the Hilfslattung 9 also - at right angles to the rafter longitudinal direction and for counter battens. When attaching the battens care must be taken that the length of the nails or screws does not exceed the thickness of the battens and counter battens in order to prevent any damage to the VIP 6.

Table 1 shows examples of the dimensions of the counter battens, battens and the length of the nails used, depending on the screwing used in the counter battens. This is important if not only the thermal insulation system 1 as such, but a building envelope according to the invention with a thermal insulation system 1 is considered.

Tab. 1: Overview of the nails / slats to be fixed etc.

Table 2 shows U-values that can be achieved with System 1 as rafter insulation, with the following key data: Steep roof (> 30 °) with gypsum plaster on HLW board, mineral wool insulation (WLS 035) between the rafters with an auxiliary battens (WLS 130) and a roof underlay

Distance auxiliary battens 60 cm

Rafter spacing: variable

Rafter size 10 x 12 cm

VIP thickness 2 cm (WLS 008)

Rafter spacing in m

0.4 0.6 0.8 1

U value in W / m ² K at 5 cm

Auxiliary battens 0.189 0.182 0, 178 0.175

Tab. 2: Overview U-values for an example roof (calculation according to DIN)

The EnEV 2012 is expected to require a U-value for roof renovation of <0.20 W / m ² K in Germany. Thus, the above-described Aufsparren- system also covers future values of the EnEV.

In Fig. 4, an insulation board 5 is provided without auxiliary battens with a thin protective layer, which in the present case is the lower protective layer 7. The VIP 6 is thus provided in the present case with a resistant plastic layer on the underside. The thickness of the protective layer 7 is between 0.3 to 20 mm, preferably between 0.5 to 10 mm and particularly preferably between 0.8 to 5 mm. The material of the protective layer 7 may consist of individual films, such as HDPE, or of laminates of different materials, such as the originating from the applicant DELTA-Protect web. In the case of using a laminate, this may consist of two to ten layers, preferably two to seven layers and more preferably two to five layers. In this case, films, fabrics, nonwovens or laminates of different materials in question, such as HD or LD polyethylene, polyvinyl chloride, polypropylene, polystyrene, polycarbonate or polyester, for example. The breaking strength (RK) of the materials should be between 300 and 800 N / 5 cm, preferably between 400 and 750 N / 5 cm and more preferably between 500 and 700 N / 5 cm. The maximum tensile strength of the material should be> 30%. The sd value (water vapor diffusion equivalent air layer thickness) as a measure of the water vapor permeability of this layer should be more than 100 m. Preferably, a protective layer with a high tensile modulus of elasticity is used in order to increase the rigidity of the insulation board 5.

In Fig. 5, an insulating plate 5 is shown, which in this case has a thicker protective layer 7 than in FIG. 4 on the underside. In the case of rafter insulation, this may be another insulation material such as PUR, EPS or XPS. The thickness of the protective layer 7 is usually between 5 to 100 mm, preferably between 7 to 50 mm and particularly preferably between 10 and 30 mm. Other materials are also suitable, such as, for example, wood, purenite, melamine resin foam, mineral wool, wood fiber boards, plywood boards, OSB boards, hemp, wool, PUR foam tape, bubble wrap or, for example, a fleece. The thickness of such layers should be between 100 and 5 mm, preferably between 80 and 10 mm, particularly preferably between 50 and 15 mm.

In Fig. 6, an insulating plate 5 is shown, the underside and top side has a protective layer 7, 8. The following materials for the protective layers 7, 8 are suitable: PUR, EPS, XPS, wood, Purenit, melamine resin foam, mineral wool, wood fiber boards, plywood boards, OSB boards, hemp, wool, PUR foam tape, bubble wrap or for example a nonwoven. The thickness of the respective protective layer should be between 100 and 5 mm, preferably between 80 and 10 mm and particularly preferably between 50 and 15 mm. Also laminates of the aforementioned materials, such as the originating from the applicant product DELTA-Maxx Comfort, are suitable. Depending on the material, the thickness of the laminates may be between 100 and 1 mm, preferably between 10 and 2 mm. The sd value can be <1 m, preferably <0.5 m. The protective layer on the upper side prevents damage to the VIP foil during transport, storage and handling on the construction site. The protective layers 7, 8 can be attached to the VIP 6, for example by means of adhesive. Alternatively, the VIP is foamed directly into the insulating material (eg in PUR or EPS), as shown in FIG. This insulating material consists for example of PUR, EPS, XPS, mineral wool, airgel or fleece. The additional insulation material is either glued to the VIP or the VIP was foamed directly into the insulation material, such as PUR or EPS possible. An outer edge marker reflects the position of the VIP within the system to uniquely identify the surfaces for attachment. At this edge strip, the thermal insulation system with classic attachment methods (nails or screws) to fix. Furthermore, the insulation sheath fulfills a protective function for each edge and surface of the VIP. Another advantage is the ability to cut the individual elements in the frame area. In this way, different dimensions can be produced directly during installation.

It should be noted that, as shown schematically in FIGS. 6 and 7, although identical protective layers 7, 8 may be provided on each side, it is readily possible that both the number and type as well as the thickness of the individual protective layers 7, 8 can vary on both sides. The number of protective layers 7, 8 per side is preferably between 1 and 10 layers and more preferably between 2 and 5 layers.

In Fig. 8, a variant with auxiliary battens 9 is shown. The VIP 6 is lower and upper side protected by a protective layer 7, 8. This may be one or more previously described webs or insulation materials. On a longitudinal end side 1 1 of the VIP 6, the auxiliary battens 9 is attached by a bond. The auxiliary battens 9 may consist, for example, of wood, purenite or a plastic such as HD-PE or PVC or comparable substances. The length of the auxiliary battens 9 preferably corresponds to the length of the longitudinal end side 1 1 and thus the length of rectangular trained in plan view insulation board 5. The height of the auxiliary battens 9 is adapted to the VIP 6 and the width should take the lowest possible value to the heat transfer to reduce at this point by the Hilfslattung 9. Possible widths of the auxiliary battens are between 20 and 100 mm, preferably between 20 and 90 mm, particularly preferably between 30 and 70 mm. On the upper side of the upper protective layer 8 is in the region of the auxiliary battens 9 a not shown in detail mark 12. The mark 12 represents a recognizable zone in which the insulating board 5 can be fixed, for example by means of screws or nails. The marking 12 can take place, for example, by the application of a material-compatible paint or a lacquer on the surface of the upper protective layer 8. Alternatively or in addition, this zone could also be marked by a color-coded adhesive strip, a deviation in the roughness of the surface and / or by a color or surface change introduced in the production of the upper protective layer 8 on this strip.

The auxiliary battens 9 allows a simple and secure attachment of the insulation board 5 and thus the thermal insulation system 1 at different roof inclinations. For example, the auxiliary battens 9 may be attached to the upper longitudinal edge of the insulation board 5, so that when laying the insulation board 5 is screwed or nailed to the auxiliary battens 9 in the rafters. In addition, the next insulation board 5 is created with its lower longitudinal edge flush with the auxiliary battens 9 of the first insulation board 5 and also bolted to the upper edge of their own auxiliary battens 9. The overlying in a conventional roof structure counter battens is laid in the next step on the rafters 4 and can be screwed or nailed through the auxiliary battens 9 in the rafters 4. In this way, the insulation boards 5 are additionally fastened as system elements via the counter battens.

FIG. 9 shows a variant of the thermal insulation system 1 with an insulating panel 5, whereby, similar to FIG. 8, there is an auxiliary battens 9 with a lower protective layer 7, although an insulating layer is provided as the upper protective layer 8. This insulating material can be glued to the surface of the VIP 6, for example. On the surface of the upper protective layer 8, the aforementioned mark 12 is also provided.

FIG. 10 shows an embodiment with an overlapping cover sheet as further protective layer 13. In this embodiment, airtightness by means of an integrated outer cover sheet, which is another Protective layer 13 forms, are generated. The further protective layer 13 overlaps the edge 14 of the insulating panel 5 at least one, preferably on two sides with an overlapping portion 15, so that an overlap can be made to the adjacent insulating panels 5. The width of the Ü overlap or the overlapping portion 15 is between 30 and 200 mm, preferably 40 and 170 mm and more preferably 50 to 150 mm. On the underside is located on the overlapping portion 15, an adhesive strip 16, over which a simple, time-saving and secure airtight bonding to the adjacent insulation board 5 is possible.

Instead of the illustrated embodiment with underside adhesive strip 16, it is in principle also possible to provide a double adhesive edge version in which a further adhesive strip is provided in addition to the underside adhesive strip 16 at the edge 14. Alternatively or additionally, an adhesive strip may also be provided on the complementary side of the insulating panel opposite the edge 14. Anyway, in this embodiment, each insulation board 5 has at least two adhesive strips.

The sd value of the cover sheet provided as a further protective layer 13 with a non-moisture-variable sd value is> 1 m, preferably> 2 m and particularly preferably> 100 m. The sd value can also be variable in humidity, z. B. <1 m at> 85% r.F. and 1 to 5 m at 40% r.F.

The integrated adhesive strip 16 may be made of z. For example, hotmelt, dispersion acrylates, or butyl rubber with liner. The width of the adhesive strip is between 100 and 20 mm, more preferably between 70 and 40 mm.

In Fig. 1 1, an embodiment is shown, in which a foam layer as the upper protective layer 8 laterally on one or two sides on the VIP 6 and the Hilfslattung 9 projects to allow a Veralzung with the adjacent insulation panel 5 adjacent element. This supernatant has a width between 150 to 30 mm, preferably 120 to 50 mm. The type of displacement of the VIP 6 to the upper insulating layer as the upper protective layer 8 is shown schematically in Figs. 12 and 13. Other ways of securing the insulation boards 5 to each other in a click profile on the respective overlapping or abutting edges. Furthermore, a tongue and groove edge may be provided, which may for example consist of two mutually glued VIP 6 and an insulating layer. Such an edge can also be formed with only one VIP 6 and outside protective layers 7, 8 of correspondingly firm material.

Instead of an overlapping edge design, it is basically also possible to make the edge design with a soft compensating material. Such an embodiment is shown in FIG. In this case, an edge region 17 made of a compressible material is provided on the longitudinal side of the insulating panel 5 opposite the auxiliary sheet 9. The compressibility is preferably more than 10%, more preferably more than 25% and most preferably more than 50%. Suitable materials are all age-resistant soft foams, for example elastomeric foam types such as flexible polyurethane foam, EPDM or NBR, but also PE foam, PP foam, soft insulating materials such as synthetic fibers, fleece, mineral wool, glass wool, hemp, wool, impregnated PUR foam tape, bubble wrap and combinations of the aforementioned materials.

Not shown in this embodiment is that below the left insulation board 5 in the imple mentation form of FIG. 14 also a lower protective layer 7 may be provided. This can extend beyond the edge region 17. Preferably, however, the lower protective layer 7 ends at the beginning of the edge region 17.

FIG. 15 shows an embodiment in which a stabilizing strip 18, 19 is respectively provided on the upper and lower sides of the auxiliary battens. The strips 18, 19 together with the auxiliary battens 9 an H-profile or on both sides in each case a U-profile. It is understood that modified variants with upper cover layer or upper insulation as the upper protective layer 8 are also possible as variants with overlapping cover sheet to the adjacent insulation board 5. By the U-Pro filing Finally, there is a stabilization of the insulation boards 5 or the VIP 6 and a simplification during installation. The stabilizing strips 18, 19 are preferably made of poor thermal conductivity materials such as plastics. For special design requirements, the strips 18, 19 may also consist of a metallic material. The projection of the strips 18, 19 on the respective VIP or the depth of the U-profile is preferably between 100 and 10 mm and in particular between 50 and 20 mm.

It is not shown that in principle it is also possible for the auxiliary sheet 9 and the stabilizing strips 18, 19 to be formed in one piece as a receptacle. In this case, an insulating board 5 is glued to this H-profile, with a secure mounting of the insulating panel 5 is possible by the recording. The attachment then takes place via the central area, which performs the function of the auxiliary battens.

FIG. 16 shows an embodiment with a solid cover layer as the upper protective layer 8. The solid cover layer preferably consists of a long-term weather-resistant material such as zinc, titanium, copper, aluminum or galvanized sheet steel, a particularly weather-resistant plastic or for example a tile. The fastening takes place via the auxiliary battens 9 through the upper protective layer 8, wherein the fastening point is concealed by the adjacent insulating panel 5 or its covering layer, as shown schematically in FIG. 16. Incidentally, it is understood that the type shown in Fig. 16, the laying and attachment may also be provided in principle with a flexible cover layer as a roof covering and thus as an upper protective layer 8. In this case, the cover layer is formed, for example, by bituminous sheets, bitumen shingles or sheets of flexible polyolefin.

In Fig. 17, the rectangular shape (in plan view) of an insulating panel 5 is shown schematically. In the illustrated embodiment, the length of the insulation board 5 is greater than the width. However, this does not have to be the case. The circumstances can also be reversed. The insulation board 5 may otherwise have a square shape. In Fig. 18, an embodiment is shown in which three VIP 6 are provided. The division of the insulating layer 5 in three VIP 6 can offer advantages if the insulation board 5 must be adapted to certain spatial conditions. For example, if a hipped roof, the termination can be cut at a suitable angle in the thermal insulation system 1. If this results in damage to a VIP 6, the ventilated part still has a very good thermal conductivity of about 0.020 W / mK. Thus, an additional edge detail training with another material such as PUR on an auxiliary plate is unnecessary.

The embodiment shown in Fig. 19 shows two rows, each with two VIP 6. In such a configuration with a plurality of rows of VIP 6 even more flexible adjustment is possible without too many VIP 6 are vented during cutting.

FIG. 20 shows an alternative embodiment in which a rail system with a plurality of rails 20, 21 is provided for fastening the individual insulation boards 5. The individual rails 20, 21 each extend parallel to one another. Each of the rails 20, 21 has a longitudinal receptacle 22 on longitudinal sides facing one another. Seen in cross-section, the rails 20, 21 present an H-shape, so that a receptacle 22 is provided on both longitudinal sides of a rail 20, 21. It is understood that it is also possible in principle to form the rails 20, 21 in a U-shape. In this case, the rail system per rail pair then only one receptacle 22, so that inserted insulation boards 5 are arranged only on one side in a receptacle 22, while resting on the other side on a flat longitudinal side of the rail. When using H-profiled rails, the individual insulation boards 5, which in this case do not have to have auxiliary battens, are to be inserted from one end of the rail system into the receptacles 22. With U-shaped profiled rails 20, 21, it is possible to swing the insulation boards 5. Moreover, it is understood that the distance of the rails 20, 21 corresponds to their respective attacks at least substantially the width of the individual insulating panels 5, so that there is a secure support. In addition, the insulation boards 5 abutment against each other without a separate separating element between adjacent insulation boards 5 is provided. Moreover, it follows from Fig. 20, the use of different sized insulation boards 5 to adapt the thermal insulation system 1 according to the invention easier to the local conditions and to obtain a maximum occupancy with insulation boards 5.

In Fig. 21, a possible roof occupancy is shown schematically. Mostly insulation boards 5 are laid. With 23 two details are shown, which may be, for example, a window and a fan. In the field of details 23 fields are covered with parts of auxiliary plates 24, which consist of an insulating material, such as PUR, and have the same thickness as the insulation boards 5.

Fig. 22 shows schematically a wall structure in a facade in which a window 23 is provided as a detail. In this embodiment, no auxiliary plates 24 are provided. The thermal insulation system 1 has only insulation boards 5.

For complicated roof coverings or wall superstructures, it makes sense to create a computer-aided evaluation of an optimal laying structure. It should, as previously stated, the proportion of the insulating panels 5 as large as possible and the proportion of the auxiliary plates 24 should be as small as possible.

The production of an embodiment of an insulating panel 5 will be described below by way of example. The central element is a 2 cm thick VIP 6. On the long front side 1 1, the auxiliary battens 9 (in 2 times 5 cm) attached or glued. Under the auxiliary battens 9 and the VIP 6, the DELTA-Protect layer is glued over its entire surface. On the upper surface and 5 cm offset to the side or a protruding PUR plate (2 cm thick) is glued as upper protective layer 8, so that an overlap to the lower and side adjacent insulation board 5 is made possible. On top of the PUR-plate as upper protective layer, there is also an underlay with overlapping edges with integrated adhesive strip. The edges overlap each at least 10 cm. LIST OF REFERENCE NUMBERS

1 thermal insulation system

2 space

3 rafters

4 insulating material

5 insulation board

6 vacuum insulation panel (VIP)

7 lower protective layer

8 upper protective layer

9 auxiliary battens

10 screw

1 1 front side

12 mark

13 more protective layers

14 edge

15 overlapping section

16 adhesive strips

17 border area

18 stabilizing strips

19 stabilizing strips

20 rail

21 rail

22 recording

23 detail

24 auxiliary plate

Claims

claims:

1. A thermal insulation system (1) for a building envelope, comprising at least one insulating panel (5) having at least one vacuum insulation panel (6), characterized

that on at least one edge side of the insulation board (5) an auxiliary battens (9) is provided for connection to the ground.

2. Thermal insulation system according to claim 1, characterized in that the auxiliary battens (9) with a front side (1 1) of the vacuum insulation panel (6) fixedly connected, in particular glued.

3. Thermal insulation system according to claim 1 or 2, characterized in that on the outside of the insulation board (5) a course and the arrangement of the auxiliary battens (9) indicative mark (12) is provided.

4. Thermal insulation system according to one of the preceding claims, characterized in that on the insulating board (5) in the region of the auxiliary battens (9) at least one receiving profile for an adjacent insulating board (5) is provided.

5. thermal insulation system (1) for a building envelope, with at least one at least one vacuum insulation panel (6) having insulation board (5), characterized

in that a rail system comprising a plurality of rails (20, 21) to be arranged in parallel is provided, each rail (20, 21) having on at least one longitudinal side a longitudinal receptacle (22) for inserting an insulating panel (5) and the length of a rail (20, 21) corresponds to the multiple of the length of an insulating board (5), so that at least two insulating boards (5) can be used in a pair of rails.

6. Thermal insulation system according to one of the preceding claims, characterized in that on the vacuum insulation panel (6) underside and / or o-side at least one protective layer (7, 8), in particular in the form of a Plate of an insulating material, a flexible web portion, preferably in the manner of a Unterdeckbahn, and / or a solid cover layer is applied and / or that the vacuum insulation panel (6) is completely foamed in an insulating material.

7. Thermal insulation system according to one of the preceding claims, characterized in that the uppermost protective layer (8) on at least one edge side of the insulating panel (5) has an overlap with at least one adhesive edge for connection to an adjacent insulating panel (5).

8. Thermal insulation system according to one of the preceding claims, characterized in that the insulating board (5) is profiled on at least one end face (1 1) to form a stepped rabbeting or a tongue and groove connection with an adjacent insulating board (5) or an edge area ( 17) of a compressive compensating material, in particular of a soft polyurethane foam having.

9. Thermal insulation system according to one of the preceding claims, characterized in that the length of an insulating panel (5) corresponds to at least twice the sum of the clear rafter spacing and the rafter width.

10. Thermal insulation system according to one of the preceding claims, characterized in that at least two insulation boards (5) are provided with different sized plate sizes.

1 1. Thermal insulation system according to one of the preceding claims, characterized in that a further insulating board, in particular of PUR, EPS or XPS, as zuschneidbare auxiliary plate (24) and / or at least one under the insulating board (5) to be laid auxiliary film to compensate for Unevenness on the ground is provided.