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EP2733272B1 - Composite heat insulation systems for building facades - Google Patents

Composite heat insulation systems for building facades Download PDF

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Publication number
EP2733272B1
EP2733272B1 EP13192825.1A EP13192825A EP2733272B1 EP 2733272 B1 EP2733272 B1 EP 2733272B1 EP 13192825 A EP13192825 A EP 13192825A EP 2733272 B1 EP2733272 B1 EP 2733272B1
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EP
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Prior art keywords
layer
heat insulation
embedding compound
composite heat
compound layer
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EP13192825.1A
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German (de)
French (fr)
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EP2733272A1 (en
Inventor
Stefan-Josef Kudlek
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Knauf Gips KG
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Knauf Marmorit GmbH
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762—Exterior insulation of exterior walls

Definitions

  • the invention relates to a thermal insulation composite system for building facades according to the preamble of claim 1.
  • composite thermal insulation systems which generally comprise an insulating material layer made of, for example, EPS or mineral fiber boards that can be applied to the building wall and a plaster layer that can be applied to the insulating material layer.
  • the plaster layer has an embedded reinforcement fabric layer.
  • the known thermal insulation composite systems have the required thermal insulation values, but are susceptible to (punctual, dynamic) impact loads (impacts or perforations) that act on the front side of the plaster layer. If an object, such as a bicycle, is leaning against the layer of plaster, it can, depending on the force with which the object is leaned against the layer of plaster, indentations, cracks or chips or the like. come in the plaster layer. This danger is all the greater, the lower the compressive strength of the insulating material layer of the thermal insulation composite system.
  • stiffened plaster bases are known in the prior art, they do not meet the requirements for the desired impact resistance. Examples of stiffened plaster bases are in WO-A-2012/031 674 , DE-B-196 43 528 , DE-C-44 16 536 and DE-A-31 49 974 described.
  • DE-A-103 22 433 discloses a method for renovating soaked thermal insulation composite systems or building exterior walls damaged in some other way or for protecting thermal insulation composite systems or building exterior walls against moisture penetration or other damage.
  • a profiled foil with knobs is attached to the outside of the thermal insulation composite system or the building wall, which creates an air space between the foil and the outside of the building or thermal insulation composite system.
  • a layer of plaster with reinforcement fabric embedded in it is applied to the film.
  • the object of the invention is to create a thermal insulation composite system that has increased impact resistance.
  • the invention proposes a composite thermal insulation system for building facades, which is provided with the features of claim 1, the features of individual configurations of the invention being specified in the dependent claims.
  • the invention proposes the integration of a rigid, impact-resistant, non-destructive or non-destructive layer of perforated plates (hereinafter referred to as perforated plates), which has a stress-absorbing and stress-distributing effect.
  • the panels are arranged in the embedding layer and thus lead to a non-positive connection in the thermal insulation composite system. Dynamic loads that occur at certain points in the embedding compound layer are routed via this to the perforated plates and distributed by them over the surface and can thus be absorbed by the comparatively soft insulating material layer without the embedding compound layer cracking or flaking or the like. Damage (possibly indentations or the like) experiences.
  • the perforated plates thus form stress-distributing elements and thus differ significantly from the properties of the reinforcement fabric, which is used to avoid cracking is embedded in the embedding layer and thus serves to absorb tensile stresses.
  • the perforated plates are not direct, ie, for example, via anchors, pins, bolts, dowels or the like. mechanical fasteners held on the building facade to be insulated, so do not serve as a plaster base, but the inclusion of z.
  • the embedding layer is primarily a single- or multi-layer plaster layer; but the invention is not limited to such plaster layers. In the following, however, in connection with the description of the invention, for the sake of simplicity, reference is made to a layer of plaster as an exemplary embodiment of a layer of embedding compound.
  • the layer according to the invention increases the flexural rigidity of the thermal insulation composite system, so that the resistance to impacts that can act on the front side of the plaster layer is increased.
  • the presence of the layer also provides a hindrance to impacted puncture forces by objects, e.g. B. knife, screwdriver, hammer, which is used to act on the plaster layer, are prevented from penetrating to the insulation layer.
  • the perforated plates are made of a suitable material, of a suitable thickness and with perforations that are so small in terms of area or designed in such a way that the usual point and local forces for which the thermal insulation composite system must be designed can be absorbed.
  • the perforated plates are made of metal, plastic, cement or a composite material such as. B. GRP or CFRP material.
  • the size of the perforations is preferably less than 5 mm in diameter and in particular less than 4 mm; In other words, the cross-sections of the holes should be less than about 20 mm 2 or, in particular, less than 12 mm 2 .
  • the perforated plates can have holes of the same size or different sizes and/or the same and/or different shapes of holes. Depending on the material of the perforated plate, its thickness can be less than 3 mm, preferably less than 2 mm and in particular less than 1 mm.
  • the perforated plates are arranged within the plaster layer.
  • the fixation/anchoring of the perforated plates takes place by embedding the plates in plaster material, which thus penetrates the perforated plates (namely extends through their perforations).
  • plaster material which thus penetrates the perforated plates (namely extends through their perforations).
  • the perforated plates are positioned on the rear side of the plaster layer (also called plaster disc)
  • the perforated plates are advantageously fixed to the insulation layer by means of an adhesive.
  • the perforated plates can be embedded in the usually thicker base coat layer in the case of a multi-layer plaster pane made up of base coat and top coat.
  • the reinforcing fabric is usually also embedded in this base coat.
  • the fastening of the insulating material layer to the wall is expediently carried out by means of an adhesive (through mortar adhesive dabs over the whole or part of the surface and/or by mechanical fasteners such as dowels, rails, suspension/support elements or the like.).
  • the material for the insulation layer is, for example, EPS (expanded polystyrene), mineral wool (MW), wood wool (WF), PU, PF (phenolic resin) and others Insulating material approved for thermal insulation composite systems.
  • the adhesives that can be used can be mineral or organically bound materials. This also applies to the basecoat. All common wall constructions such as concrete, brick walls or walls made of panel materials can be used as the substrate, i.e. the wall to which the thermal insulation composite system is attached.
  • the base and top coats are expediently made of materials such as are generally known in the prior art.
  • the thermal insulation composite system it is possible to increase the impact strength (taking into account the material thickness and the modulus of elasticity (of the composite layer)) and to increase the puncture resistance.
  • the hole size should not be larger than 4 to 5 mm or should be matched to the smallest stamps of the so-called perfotest (e.g. stamp diameter of 4 mm according to ETAG 004, p. 38).
  • the perforated portion should be relatively large in order to save weight and material, but the perforated plate is still sufficiently rigid and gives the entire system the required tensile/shear load capacity (stability).
  • the proportion of holes should be less than 80%, in particular less than 40% and advantageously less than 30%, with the hole size and/or shape possibly having to be selected accordingly in order to realize the respective hole proportion.
  • the perforated panels do not lead to any deterioration in the U-value of the thermal insulation composite system. In addition, they only lead to a slight change in the water vapor transmission resistance s d .
  • the inventive integration of the rigid, perforated layer of perforated sheets leads to "woodpecker protection", ie protection against damage to the thermal insulation layer as a result of the effects of woodpecker beak impacts on the plaster layer, and hail protection.
  • plaster is not to be understood in the sense of its normative definition.
  • other embedding materials in which the perforated plates are embedded can also be used, such as e.g. B. adhesive or basecoat mortar, thin-bed mortar, organic or inorganic adhesive materials.
  • the embedding compound and/or plaster layer can be held by a plaster base attached directly to the facade or a wall using fastening elements, which in principle does not take over the function of the rigid layer or plates according to the invention and in addition to this / these is provided, but this is not mandatory.
  • a first exemplary embodiment of a thermal insulation composite system 10 for attachment to a building wall 12 is shown.
  • a thermal insulation layer 16 made of EPS panels, for example.
  • a plaster disk 18 made of a plaster layer 20 with a layer 21 to increase the impact resistance and puncture resistance.
  • the cleaning disc 18 has a front side 22 and includes a base plaster layer 23 made of basecoat with embedded reinforcing fabric 24 and a covering plaster layer 26.
  • the layer 21 has perforated plates 28 made of stainless steel or plastic, for example, with holes or perforations 30.
  • the perforated plates 28 are attached to the insulating material layer 16 by means of an adhesive layer 32 . Either the material of the adhesive layer 32 or that of the basecoat 23 protrudes into the holes 30, which 1 is not shown.
  • FIG. 2 shows a second embodiment of a thermal insulation composite system 10 ', wherein in 2 for the individual layers, the same reference numbers are used, but with a single prime, as in 1 are used to designate the layers.
  • the difference between the thermal insulation composite system 10' and the thermal insulation composite system 10 is that in 2 the perforated plates 28' are arranged between the base plaster layer 23 and the top plaster layer 26.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Description

Die Erfindung betrifft ein Wärmedämmverbundsystem für Gebäudefassaden nach dem Oberbegriff des Anspruchs 1.The invention relates to a thermal insulation composite system for building facades according to the preamble of claim 1.

Für die Wärmedämmung an Gebäuden werden deren Fassaden mit Wärmedämmverbundsystemen versehen, die im Allgemeinen eine auf die Gebäudewand aufbringbare Dämmstoffschicht aus beispielsweise EPS- oder Mineralfaserplatten und eine auf die Dämmstoffschicht aufbringbare Putzschicht umfassen. Die Putzschicht weist eine eingebettete Armiergewebelage auf.For the thermal insulation of buildings, their facades are provided with composite thermal insulation systems, which generally comprise an insulating material layer made of, for example, EPS or mineral fiber boards that can be applied to the building wall and a plaster layer that can be applied to the insulating material layer. The plaster layer has an embedded reinforcement fabric layer.

Die bekannten Wärmedämmverbundsysteme weisen die geforderten Wärmedämmwerte auf, sind aber gegen (punktuelle, dynamische) Stoßbeanspruchungen (Schläge oder Perforationen), die auf die Vorderseite der Putzschicht wirken, anfällig. Wird an die Putzschicht ein Gegenstand wie beispielsweise ein Fahrrad, angelehnt, so kann es je nach der Kraft, mit der der Gegenstand gegen die Putzschicht gelehnt wird, zu Eindrückungen, Rissbildungen oder Abplatzungen o.dgl. in der Putzschicht kommen. Diese Gefahr ist umso größer, je geringer die Druckfestigkeit der Dämmstoffschicht des Wärmedämmverbundsystems, ist.The known thermal insulation composite systems have the required thermal insulation values, but are susceptible to (punctual, dynamic) impact loads (impacts or perforations) that act on the front side of the plaster layer. If an object, such as a bicycle, is leaning against the layer of plaster, it can, depending on the force with which the object is leaned against the layer of plaster, indentations, cracks or chips or the like. come in the plaster layer. This danger is all the greater, the lower the compressive strength of the insulating material layer of the thermal insulation composite system.

Im Stand der Technik sind zwar versteifte Putzträger bekannt, die aber den Anforderungen an die gewünschte Stoßfestigkeit nicht genügen. Beispiele für versteifte Putzträger sind in WO-A-2012/031 674 , DE-B-196 43 528 , DE-C-44 16 536 und DE-A-31 49 974 beschrieben.Although stiffened plaster bases are known in the prior art, they do not meet the requirements for the desired impact resistance. Examples of stiffened plaster bases are in WO-A-2012/031 674 , DE-B-196 43 528 , DE-C-44 16 536 and DE-A-31 49 974 described.

Aus DE-A-38 06 967 ist ein Wärmedämmverbundsystem bekannt, bei dem ein Putzträger verwendet wird, der ein mit Absorptionspappe kaschiertes Drahtgitter aufweist, welches über Verankerungselemente fest mit der Fassade verbunden und zu dieser im Abstand angeordnet ist. Diese Art von Putzträger kann der Putzschicht eine für alltägliche Belastungen ausreichende Widerstandskraft nicht verleihen.Out of DE-A-38 06 967 a thermal insulation composite system is known in which a plaster base is used, which has a wire mesh laminated with absorption cardboard, which is firmly connected to the facade via anchoring elements and arranged at a distance from it. This type of plaster base cannot give the plaster layer sufficient resistance to everyday loads.

Aus DE-A-103 22 433 ist ein Verfahren zum Sanieren von durchfeuchteten Wärmedämmverbundsystemen oder in anderer Weise beschädigten Gebäude-Außenwänden oder zum Schützen von Wärmedämmverbundsystemen oder Gebäude-Außenwänden gegen Durchfeuchtung oder andere Beschädigungen bekannt. Bei diesem Verfahren wird an die Außenseite des Wärmedämmverbundsystems bzw. der Gebäudewand eine profilierte Folie mit Noppen angebracht, durch die ein Luftraum zwischen der Folie und der Gebäude- bzw. Wärmedämmverbundsystemaußenseite entsteht. Auf die Folie wird eine Putzschicht mit in diese eingebettetem Armierungsgewebe aufgebracht.Out of DE-A-103 22 433 discloses a method for renovating soaked thermal insulation composite systems or building exterior walls damaged in some other way or for protecting thermal insulation composite systems or building exterior walls against moisture penetration or other damage. With this method, a profiled foil with knobs is attached to the outside of the thermal insulation composite system or the building wall, which creates an air space between the foil and the outside of the building or thermal insulation composite system. A layer of plaster with reinforcement fabric embedded in it is applied to the film.

Aufgabe der Erfindung ist es, ein Wärmedämmverbundsystem zu schaffen, das eine erhöhte Stoßfestigkeit aufweist.The object of the invention is to create a thermal insulation composite system that has increased impact resistance.

Zur Lösung dieser Aufgabe wird mit der Erfindung ein Wärmedämmverbundsystem für Gebäudefassaden vorgeschlagen, das versehen ist mit den Merkmalen des Anspruchs 1, wobei bei den Unteransprüchen die Merkmale einzelner Ausgestaltungen der Erfindung angegeben sind.To solve this problem, the invention proposes a composite thermal insulation system for building facades, which is provided with the features of claim 1, the features of individual configurations of the invention being specified in the dependent claims.

Sinngemäß wird also mit der Erfindung die Integration einer biegesteifen, stoßfestigkeitserhöhende, zerstörungs- bzw. beschädigungsfreie Schicht aus perforierten Platten (nachfolgend Lochplatten genannt) vorgeschlagen, die spannungsaufnehmend und spannungsverteilend wirkt. Die Platten sind in der Einbettmasseschicht angeordnet und führen damit zu einem kraftschlüssigen Verbund im Wärmedämmverbundsystem. Punktuell auftretende, dynamische Belastungen der Einbettmasseschicht werden über diese zu den Lochplatten geleitet und von diesen in der Fläche verteilt und können somit von der vergleichsweise weichen Dämmstoffschicht aufgenommen werden, ohne dass die Einbettmasseschicht Rissbildungen oder Abplatzungen o.dgl. Beschädigungen (allenfalls noch Eindrückungen o.dgl.) erfährt. Die Lochplatten bilden also spannungsverteilende Elemente und unterscheiden sich damit ganz wesentlich von den Eigenschaften des Armiergewebes, das zur Vermeidung von Rissbildungen in der Einbettmasseschicht in diese eingebettet ist und damit zur Aufnahme von Zugspannungen dient. Die Lochplatten sind nicht direkt, d. h. z. B. über Anker, Stifte, Bolzen, Dübel odgl. mechanische Befestigungselemente an der zu dämmenden Gebäudefassade gehalten, dienen also nicht als Putzträger, sondern der Aufnahme von auf die z. B. Einbettmasse einwirkenden Biegespannungen oder der Verteilung von auf die Einbettmasse einwirkenden Stoßkräften. Armierungsgewebe, und seien sie auch mit der Gebäudefassade mechanisch verbunden, können dies nicht leisten.Accordingly, the invention proposes the integration of a rigid, impact-resistant, non-destructive or non-destructive layer of perforated plates (hereinafter referred to as perforated plates), which has a stress-absorbing and stress-distributing effect. The panels are arranged in the embedding layer and thus lead to a non-positive connection in the thermal insulation composite system. Dynamic loads that occur at certain points in the embedding compound layer are routed via this to the perforated plates and distributed by them over the surface and can thus be absorbed by the comparatively soft insulating material layer without the embedding compound layer cracking or flaking or the like. Damage (possibly indentations or the like) experiences. The perforated plates thus form stress-distributing elements and thus differ significantly from the properties of the reinforcement fabric, which is used to avoid cracking is embedded in the embedding layer and thus serves to absorb tensile stresses. The perforated plates are not direct, ie, for example, via anchors, pins, bolts, dowels or the like. mechanical fasteners held on the building facade to be insulated, so do not serve as a plaster base, but the inclusion of z. B. embedding bending stresses or the distribution of impact forces acting on the embedding. Reinforcement fabrics, even if they are mechanically connected to the building facade, cannot do this.

Vornehmlich handelt es sich bei der Einbettmasseschicht um eine ein- oder mehrlagige Putzschicht; die Erfindung ist aber auf derartige Putzschichten nicht beschränkt. Im Folgenden wird aber vereinfachend im Zusammenhang mit der Beschreibung der Erfindung auf eine Putzschicht als Ausführungsbeispiel für eine Einbettmasseschicht verwiesen.The embedding layer is primarily a single- or multi-layer plaster layer; but the invention is not limited to such plaster layers. In the following, however, in connection with the description of the invention, for the sake of simplicity, reference is made to a layer of plaster as an exemplary embodiment of a layer of embedding compound.

Durch die erfindungsgemäße Schicht wird die Biegesteifigkeit des Wärmedämmverbundsystems erhöht, so dass die Widerstandskraft gegen Stöße, die auf die Vorderseite der Putzschicht einwirken können, erhöht ist. Das Vorhandensein der Schicht führt zusätzlich zu einer Behinderung bei einwirkenden Durchstoßkräften, indem Gegenstände, z. B. Messer, Schraubenzieher, Hammer, mit denen auf die Putzschicht eingewirkt wird, daran gehindert sind, bis zur Dämmstoffschicht durchzudringen. Die Lochplatten bestehen aus einem geeigneten Material, in geeigneter Dicke und mit Perforationen, die flächenmäßig so klein bzw. so gestaltet sind, dass die üblichen punktuell und lokal wirkenden Kräfte, für die das Wärmedämmverbundsystem ausgelegt sein muss, aufgefangen werden können.The layer according to the invention increases the flexural rigidity of the thermal insulation composite system, so that the resistance to impacts that can act on the front side of the plaster layer is increased. The presence of the layer also provides a hindrance to impacted puncture forces by objects, e.g. B. knife, screwdriver, hammer, which is used to act on the plaster layer, are prevented from penetrating to the insulation layer. The perforated plates are made of a suitable material, of a suitable thickness and with perforations that are so small in terms of area or designed in such a way that the usual point and local forces for which the thermal insulation composite system must be designed can be absorbed.

Insbesondere bestehen die perforierten Platten (Lochplatten) aus Metall, Kunststoff, Zement oder einem Verbundwerkstoff wie z. B. GFK- bzw. CFK-Material. Die Größe der Perforationen ist im Durchmesser vorzugsweise kleiner als 5 mm und insbesondere kleiner als 4 mm; anders ausgedrückt sollten die Querschnitte der Löcher kleiner als etwa 20 mm2 bzw. insbesondere kleiner als 12 mm2 sein.In particular, the perforated plates (perforated plates) are made of metal, plastic, cement or a composite material such as. B. GRP or CFRP material. The size of the perforations is preferably less than 5 mm in diameter and in particular less than 4 mm; In other words, the cross-sections of the holes should be less than about 20 mm 2 or, in particular, less than 12 mm 2 .

Die Lochplatten können gleichgroße oder unterschiedlich große Löcher und/oder gleiche und/oder verschiedene Formen von Löchern aufweisen. In Abhängigkeit von dem Material der Lochplatte kann deren Dicke kleiner als 3 mm, vorzugsweise kleiner als 2 mm und insbesondere kleiner als 1 mm betragen.The perforated plates can have holes of the same size or different sizes and/or the same and/or different shapes of holes. Depending on the material of the perforated plate, its thickness can be less than 3 mm, preferably less than 2 mm and in particular less than 1 mm.

In weiterer vorteilhafter Ausgestaltung der Erfindung kann vorgesehen sein, dass die Lochplatten innerhalb der Putzschicht angeordnet sind.In a further advantageous embodiment of the invention it can be provided that the perforated plates are arranged within the plaster layer.

Die Fixierung/Verankerung der perforierten Platten erfolgt durch Einbetten der Platten in Putzmaterial, das somit die perforierten Platten durchdringt (nämlich sich durch deren Perforationen hindurch erstreckt). Bei Positionierung der Lochplatten an der Rückseite der Putzschicht (auch Putzscheibe genannt) erfolgt die Fixierung der perforierten Platten vorteilhafterweise mittels eines Klebers an der Dämmstoffschicht. Die perforierten Platten können bei einer mehrlagigen Putzscheibe aus Unterputz und Oberputz in der zumeist dickeren Unterputzschicht eingebettet sein. In diese Unterputzschicht ist im Regelfall auch das Armiergewebe eingebettet.The fixation/anchoring of the perforated plates takes place by embedding the plates in plaster material, which thus penetrates the perforated plates (namely extends through their perforations). When the perforated plates are positioned on the rear side of the plaster layer (also called plaster disc), the perforated plates are advantageously fixed to the insulation layer by means of an adhesive. The perforated plates can be embedded in the usually thicker base coat layer in the case of a multi-layer plaster pane made up of base coat and top coat. The reinforcing fabric is usually also embedded in this base coat.

Die Befestigung der Dämmstoffschicht an der Wand erfolgt zweckmäßigerweise mittels eines Klebers (durch Mörtelkleberbatzen voll- oder teilflächig und/oder aber durch mechanische Befestigungselemente wie beispielsweise Dübel, Schienen, Aufhänge-/Abstützelemente o.dgl.).The fastening of the insulating material layer to the wall is expediently carried out by means of an adhesive (through mortar adhesive dabs over the whole or part of the surface and/or by mechanical fasteners such as dowels, rails, suspension/support elements or the like.).

Als Material für die Dämmstoffschicht kommt beispielsweise EPS (Expandiertes Polystyrol), Mineralwolle (MW), Holzwolle (WF), PU, PF (Phenolharz) sowie andere bei Wärmedämmverbundsystemen zugelassene Dämmstoff infrage. Die verwendbaren Kleber können mineralisch oder organisch gebundene Materialien sein. Dies gilt auch für den Armiermörtel. Als Untergrund, also Wand, an der das Wärmedämmverbundsystem angebracht wird, kommen alle gängigen Wandkonstruktionen wie beispielsweise Beton, gemauerte Wände bzw. Wände aus Plattenwerkstoffen infrage. Die Unter- und Oberputze bestehen zweckmäßigerweise aus Materialien, wie sie im Stand der Technik grundsätzlich bekannt sind.The material for the insulation layer is, for example, EPS (expanded polystyrene), mineral wool (MW), wood wool (WF), PU, PF (phenolic resin) and others Insulating material approved for thermal insulation composite systems. The adhesives that can be used can be mineral or organically bound materials. This also applies to the basecoat. All common wall constructions such as concrete, brick walls or walls made of panel materials can be used as the substrate, i.e. the wall to which the thermal insulation composite system is attached. The base and top coats are expediently made of materials such as are generally known in the prior art.

Mit den erfindungsgemäßen Wärmedämmverbundsystem lässt sich eine Erhöhung der Schlagfestigkeiten (unter Berücksichtigung der Materialstärken und des E-Moduls (der Verbundschicht)) sowie eine Erhöhung der Durchstoßfestigkeiten erzielen. Im zuletzt genannten Fall sollte die Lochgröße nicht größer als 4 bis 5 mm sein bzw. auf die kleinsten Stempel des sogenannten Perfotests (beispielsweise Stempeldurchmesser von 4 mm nach ETAG 004, S. 38) abgestimmt sein. Der Lochanteil sollte relativ groß sein, um Gewicht und Material einzusparen, wobei die Lochplatte aber noch ausreichend biegesteif ist und dem Gesamtsystem die erforderliche Zug-/Schubkraftbelastbarkeit (Standsicherheit) verleiht. Der Lochanteil sollte kleiner als 80 %, insbesondere kleiner als 40 % und vorteilhafterweise kleiner als 30 % sein, wobei die Lochgröße und/oder -form ggf. entsprechend zu wählen ist/sind, um den jeweiligen Lochanteil zu realisieren. Die perforierten Platten führen erfindungsgemäß zu keinerlei Verschlechterung des U-Wertes des Wärmedämmverbundsystems. Sie führen darüber hinaus lediglich zu einer geringen Veränderung des Wasserdampfdurchlasswiderstandes sd. Außerdem führt die erfindungsgemäße Integration der biegesteifen perforierten Schicht aus Lochblechen zu einem "Spechtschutz", also zu einem Schutz vor Beschädigungen der Wärmedämmschicht infolge der Einwirkung von Spechtschnabeleinschlägen auf die Putzschicht, und zu einem Hagelschutz.With the thermal insulation composite system according to the invention, it is possible to increase the impact strength (taking into account the material thickness and the modulus of elasticity (of the composite layer)) and to increase the puncture resistance. In the last-mentioned case, the hole size should not be larger than 4 to 5 mm or should be matched to the smallest stamps of the so-called perfotest (e.g. stamp diameter of 4 mm according to ETAG 004, p. 38). The perforated portion should be relatively large in order to save weight and material, but the perforated plate is still sufficiently rigid and gives the entire system the required tensile/shear load capacity (stability). The proportion of holes should be less than 80%, in particular less than 40% and advantageously less than 30%, with the hole size and/or shape possibly having to be selected accordingly in order to realize the respective hole proportion. According to the invention, the perforated panels do not lead to any deterioration in the U-value of the thermal insulation composite system. In addition, they only lead to a slight change in the water vapor transmission resistance s d . In addition, the inventive integration of the rigid, perforated layer of perforated sheets leads to "woodpecker protection", ie protection against damage to the thermal insulation layer as a result of the effects of woodpecker beak impacts on the plaster layer, and hail protection.

Die Erfindung wurde vorstehend anhand einer Putzschicht als Einbettmasse beschrieben, in die die Lochplatten eingebettet sind. Hierbei sei darauf hingewiesen, dass Putz nicht im Sinne seiner normativen Definition zu verstehen ist. Ferner können auch andere Einbettmaterialien, in die die Lochplatten eingebettet sind, verwendet werden, wie z. B. Klebe- oder Armiermörtel, Dünnbettmörtel, organische oder anorganische Klebematerialien.The invention has been described above using a layer of plaster as the embedding compound, in which the perforated plates are embedded. It should be noted here that that plaster is not to be understood in the sense of its normative definition. Furthermore, other embedding materials in which the perforated plates are embedded can also be used, such as e.g. B. adhesive or basecoat mortar, thin-bed mortar, organic or inorganic adhesive materials.

Falls aus Gründen der Standfestigkeit erforderlich, kann die Einbettmasse- und/oder Putzschicht von einem über Befestigungselemente direkt an der Fassade bzw. einer Wand befestigten Putzträger gehalten sein, der grundsätzlich die Funktion der biegesteifen Lage bzw. Platten nach der Erfindung nicht übernimmt und zusätzlich zu dieser/diesen vorgesehen ist, was aber nicht zwingend erforderlich ist.If necessary for reasons of stability, the embedding compound and/or plaster layer can be held by a plaster base attached directly to the facade or a wall using fastening elements, which in principle does not take over the function of the rigid layer or plates according to the invention and in addition to this / these is provided, but this is not mandatory.

Die Erfindung wird nachfolgend anhand von zwei Ausführungsbeispielen sowie unter Bezugnahme auf die Zeichnung näher erläutert. Im Einzelnen zeigen dabei:

Fig. 1
einen Querschnitt durch ein Wärmedämmverbundsystem mit erfindungsgemäßer Integration einer durchschlagsbehindernden- und stoßfestigkeitserhöhenden Schicht gemäß einem ersten Ausführungsbeispiel und
Fig. 2
einen Querschnitt durch ein Wärmedämmverbundsystem mit erfindungsgemäßer Integration einer durchschlagsbehindernden- und stoßfestigkeitserhöhenden Schicht gemäß einem zweiten Ausführungsbeispiel.
The invention is explained in more detail below using two exemplary embodiments and with reference to the drawing. In detail show:
1
a cross section through a thermal insulation composite system according to the invention with the integration of a penetration-inhibiting and impact-resistant layer according to a first embodiment and
2
a cross section through a thermal insulation composite system according to the invention with the integration of a penetration-inhibiting and impact-resistant layer according to a second embodiment.

In Fig. 1 ist ein erstes Ausführungsbeispiel eines Wärmedämmverbundsystems 10 zur Anbringung an einer Gebäudewand 12 gezeigt. Auf der Gebäudewand 12 befindet sich, durch Klebermörtel 14 fixiert, eine Wärmedämmstoffschicht 16 aus beispielsweise EPS-Platten. Auf der der Gebäudewand 12 abgewandten Vorderseite dieser Wärmedämmstoffschicht 16 befindet sich eine Putzscheibe 18 aus einer Putzschicht 20 mit einer Schicht 21 zur Erhöhung der Stoßfestigkeit und des Durchstoßwiderstands. Die Putzscheibe 18 weist eine Vorderseite 22 auf und umfasst eine Unterputzlage 23 aus Armiermörtel mit eingebettetem Armiergewebe 24 und eine Deckputzlage 26. Die Schicht 21 weist Lochplatten 28 aus beispielsweise Edelstahl oder Kunststoff mit Löchern bzw. Perforationen 30 auf. Im Ausführungsbeispiel gemäß Fig. 1 sind die Lochplatten 28 mittels einer Kleberschicht 32 an der Dämmstoffschicht 16 angebracht. In die Löcher 30 ragt entweder das Material der Kleberschicht 32 oder das der Armiermörtel 23 hinein, was in Fig. 1 nicht gezeigt ist.In 1 a first exemplary embodiment of a thermal insulation composite system 10 for attachment to a building wall 12 is shown. On the building wall 12 is fixed by adhesive mortar 14, a thermal insulation layer 16 made of EPS panels, for example. On the building wall 12 facing away from the front side of this thermal insulation layer 16 is a plaster disk 18 made of a plaster layer 20 with a layer 21 to increase the impact resistance and puncture resistance. The cleaning disc 18 has a front side 22 and includes a base plaster layer 23 made of basecoat with embedded reinforcing fabric 24 and a covering plaster layer 26. The layer 21 has perforated plates 28 made of stainless steel or plastic, for example, with holes or perforations 30. In the embodiment according to 1 the perforated plates 28 are attached to the insulating material layer 16 by means of an adhesive layer 32 . Either the material of the adhesive layer 32 or that of the basecoat 23 protrudes into the holes 30, which 1 is not shown.

Fig. 2 zeigt ein zweites Ausführungsbeispiel eines Wärmedämmverbundsystems 10', wobei in Fig. 2 für die einzelnen Schichten die gleichen Bezugszeichen, jedoch einfach gestrichen, verwendet sind, wie sie in Fig. 1 zur Bezeichnung der Schichten verwendet sind. Der Unterschied des Wärmedämmverbundsystems 10' gegenüber dem Wärmedämmverbundsystem 10 besteht darin, dass in Fig. 2 die Lochplatten 28' zwischen der Unterputzlage 23 und der Deckputzlage 26 angeordnet sind. 2 shows a second embodiment of a thermal insulation composite system 10 ', wherein in 2 for the individual layers, the same reference numbers are used, but with a single prime, as in 1 are used to designate the layers. The difference between the thermal insulation composite system 10' and the thermal insulation composite system 10 is that in 2 the perforated plates 28' are arranged between the base plaster layer 23 and the top plaster layer 26.

Claims (8)

  1. Composite heat insulation system for building facades comprising
    - an insulating material layer (16, 16') for arrangement on a wall, in particular a building wall (12, 12'),
    - an embedding compound layer applied on the insulating material layer (16, 16'), said embedding compound layer being designed as a single layer or multiple layers and having an exposed front side (22, 22'), a reinforcement fabric layer (24, 24') embedded in the embedding compound layer, and
    - a layer (21, 21') which absorbs bending stresses and distributes impact forces acting on the front side (22, 22') of the embedding compound layer, and which consists of adjacent, rigid, perforated plates (28, 28'),
    - wherein the rigid layer (21, 21') is arranged between the insulating material layer (16, 16') on the one hand and the front side (22, 22') of the embedding compound layer on the other hand,
    characterized in that
    - the material of the embedding compound layer extends through the perforations of the plates (28, 28') and, by this embedding, causes the anchoring of the plates (28, 28') and
    - the material of the embedding compound layer fully adjoins the plates (28, 28') on both sides thereof.
  2. Composite heat insulation system according to claim 1, characterized in that the perforated plates (28, 28') have holes (30, 30') with a diameter less than a value in a range from 4 mm to 5 mm and/or an area smaller than a value in a range from 12 mm2 to 20 mm2.
  3. Composite heat insulation system according to claim 1 or 2, characterized in that an adhesive or reinforcing mortar, a thin-bed mortar or organic or inorganic adhesive materials are used as the material of the embedding compound layer.
  4. Composite heat insulation system according to claim 1 or 2, characterized in that the embedding compound layer comprises a rendering layer (23') and a finishing layer (26'), and in that the perforated plates (28') are embedded in the rendering layer (23').
  5. Composite heat insulation system according to any one of claims 1 to 4, characterized in that the perforated plates (28, 28') are made of metal, cement, plastic material or a composite material such as, for example, GFK or CFK material.
  6. Composite heat insulation system according to any one of claims 1 to 5, characterized in that the insulating material layer (16, 16') can be attached to the wall (12, 12') by means of an adhesive (14, 14') or by means of fastening elements such as, for example, dowels, rails, suspension/support elements or the like.
  7. Composite heat insulation system according to any one of claims 1 to 6, characterized in that the embedding compound layer comprises one or a plurality of further layers such as, for example, a paint, on its front side (22, 22').
  8. Composite heat insulation system according to any one of claims 1 to 7, characterized in that the embedding compound layer comprises a plaster layer (20, 20').
EP13192825.1A 2012-11-15 2013-11-14 Composite heat insulation systems for building facades Active EP2733272B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3867209A1 (en) 2018-10-17 2021-08-25 Knauf Gips KG Reinforcement for reinforcing a plaster layer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806967C2 (en) * 1988-03-03 1992-07-23 Wilmsen, Hans, 4300 Essen, De
DE102007053380B4 (en) * 2007-11-09 2015-01-29 Knauf Marmorit Gmbh Arrangement of a thermal insulation composite system and a building masonry and method for fixing thermal insulation elements of a thermal insulation composite system to a building masonry

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Publication number Priority date Publication date Assignee Title
CH637724A5 (en) * 1979-06-05 1983-08-15 Idc Chemie Ag INSULATED EXTERNAL CLOTHING FOR BUILDING WALLS.
AT375430B (en) 1981-07-13 1984-08-10 Staussziegel Ind Gesellscahft HEAT ISOLATION IN FRONT OF A STRUCTURAL BUILDING WALL
DE4416536C5 (en) 1994-05-10 2004-03-11 Saint-Gobain Isover G+H Ag Facade with insulation panels made of mineral wool, especially for thermal composite systems and ventilated facades
DE19643528B4 (en) 1996-10-22 2004-02-26 Gudrun Kalina Process for insulation, renovation and cladding of facades
DE10005041A1 (en) * 2000-02-04 2001-08-23 Rockwool Mineralwolle Mineral fiber insulation material manufacturing process, involving compressing fiber mass before sewing up or quilting mesh fabric
DE10322433A1 (en) * 2002-08-17 2004-02-26 Walter Gutjahr Method for renovating/protecting damp external insulated walls, applying to outside of insulation profiled foil and high tensile grid mesh with primary/external binding plaster layer with air layer connecting to outside atmosphere
CA2809336A1 (en) 2010-09-09 2012-03-15 Rockwool International A/S Heat insulation element for insulating building facades; heat insulation composite system and method for producing a heat insulation composite system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806967C2 (en) * 1988-03-03 1992-07-23 Wilmsen, Hans, 4300 Essen, De
DE102007053380B4 (en) * 2007-11-09 2015-01-29 Knauf Marmorit Gmbh Arrangement of a thermal insulation composite system and a building masonry and method for fixing thermal insulation elements of a thermal insulation composite system to a building masonry

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