EP0365774B1 - Sealing and ventilating element with underlying watertight strips - Google Patents

Sealing and ventilating element with underlying watertight strips Download PDF

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Publication number
EP0365774B1
EP0365774B1 EP89114868A EP89114868A EP0365774B1 EP 0365774 B1 EP0365774 B1 EP 0365774B1 EP 89114868 A EP89114868 A EP 89114868A EP 89114868 A EP89114868 A EP 89114868A EP 0365774 B1 EP0365774 B1 EP 0365774B1
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EP
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Prior art keywords
fleece
element according
sealing
fibres
ridge
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EP89114868A
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German (de)
French (fr)
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EP0365774A1 (en
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Oskar Fleck
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/17Ventilation of roof coverings not otherwise provided for
    • E04D13/174Ventilation of roof coverings not otherwise provided for on the ridge of the roof

Definitions

  • the invention relates to a sealing and ventilation element for use in the roof area, consisting of a strip-shaped base made of plastic plate material, which seals at least part of its surface with roof covering panels that seal but grips over or under and allows air exchange and at least on its side facing the roof covering panels carries a sealing strip that clings to the curvature of the roof covering panels.
  • Such a sealing and ventilation element designed as a ridge sealing element, is described in the applicant's EP-A-0288020. It consists of a strip-shaped base made of plastic sheet material, to which side parts adjoin on both long sides, which overlap the edge areas of the ridge-side roof covering panels in a sealing but ventilatable manner. A sealing strip made of a fluffy, air-permeable synthetic fiber fleece is attached to the side facing the roof covering panels. Even if the plastic fiber fleece is very compressible and it retains its elasticity even in the case of sharp temperature differences, such as are observed on the roof, these properties are not entirely sufficient to ensure a secure seal and high air permeability.
  • the sealing and ventilation element a base plate on which wing parts are connected on both sides to an apex area spanning the ridge screed.
  • the wings are each provided with a sealing strip below the wing.
  • the sealing strips consist in particular of PVC foam plastic, which has a wide contact surface on the ridge element and a tapering, triangular cross section with a tip in the direction of the roofing panels. It has been shown that foam plastic of the type mentioned is relatively expensive. After being compressed by the weight of the ridge stones, optimal ventilation is also not possible. In addition, the temperature stability over the temperatures usually prevailing on the roof is not satisfactory.
  • foam materials such as PU (polyurethane), PE (polyethylene) are cheaper, but generally have even worse properties than the aforementioned PVC (polyvinyl chloride) foams in terms of stability.
  • PU polyurethane
  • PE polyethylene
  • PVC polyvinyl chloride
  • sealing and ventilation elements in the roof area are also known, which are also underlaid with such foam strips. These include, for example, eaves supply elements, throat sealing elements and ridge sealing elements. The aforementioned task can also be mutatis mutandis transferred to the latter sealing and ventilation elements.
  • the object is achieved in a sealing and ventilation element of the type mentioned at the outset with the sealing strips, in which the sealing strip made of a nonwoven with fibers is arranged in a preferred direction such that the central preferred direction of the nonwoven fibers perpendicular to the surface of the sealing strip in relation to the base surface.
  • Such fleeces e.g. B. made of polyester fibers, are known for example as an adsorbent material in extractor hoods, as a filter material and the like; see.
  • a major advantage of the new type of sealing strip is the high air permeability.
  • the Air permeability is such that an air flow velocity of at least 0.5 m / s is achieved with an air pressure difference outside and inside the strip of 20 Pa.
  • the density of the fleece is preferably between 10 - 15 kg per m3.
  • the compressibility of the fleece is significantly improved compared to the materials of the prior art.
  • the roofing panels in particular roof tiles, have a wave-like, arched structure. This results in “valleys” and "heights”.
  • the fleece should be able to follow these structures without difficulty, without gaps or omissions.
  • As a guideline it has been found that with the ridge tile lying on top, for example, a maximum of up to 10% of the uncompressed state occurs when the material rests on a flat surface. This corresponds approximately to the requirement that at a contact pressure of 1 N / cm2 of the nonwoven material between 10% and 50% of its original thickness is compressed. However, it should be pointed out that compression to a thickness of "0" is practically possible.
  • the ventilation is then interrupted here. However, since there is always enough space available in the wave-like structure of the roofing panels, in which the material is not compressed, there remains a sufficient exchange surface.
  • synthetic fibers preferably polyester fibers with a high resilience and excellent stability
  • the fibers are preferably hydrophobized, i.e. H. made water repellent.
  • Natural fiber material such as coconut or ramie fibers are also possible.
  • the fibers can be hooked together.
  • a fusion bond or a synthetic resin bonding of the fibers to one another is preferably selected.
  • the diameter of the fibers is around 10 - 50 ⁇ m.
  • the stack length is chosen to be as high as possible in order to avoid any type of lint formation.
  • the height of the sealing strips depends on the structure and the depth (crowning) of the ridge tiles above.
  • the sealing strips will have a height of 30 - 80 mm, although heights of 10 - 100 mm cannot be ruled out. They preferably have a rectangular cross section. However, it is also possible to choose a trapezoidal or triangular cross section with a diverging or converging cross section, whereby it should be taken into account here that numerous types of roofing tiles exist which have to be treated as required.
  • the fibers can be colored as a whole; However, it is also possible to dye the fleece only on the visible side over a certain layer thickness.
  • the application of the sealing strips to various elements used for sealing in the roof area and ventilation are used.
  • sealing strips are known for eaves sealing elements (see DE-C-2 910 129) or for throat sealing strips (see catalog “Der Dachprofi", published by Fleck GmbH and published in March 1986).
  • FIG. 1 shows , in particular, a sealing and ventilation element 1 of a ridge seal for roofs covered with roofing panels (element 1 in the following).
  • element 1 On this element 1 fastened to a ridge screed 2, ridge stones 3 and 4 forming the upper end of the ridge are laid, one of which rests on element 1 (dash-dotted) and the other above, that is to say before laying on (in solid lines).
  • the element 1 made of relatively rigid polyethylene is arranged between the ridge stones 3, 4 and the roof covering plates 20 shown in FIG.
  • the element 1 has a flat middle part 5 lying on the top of the ridge screed 2, to which side parts 6 and 7 adjoin on both sides, which sealingly overlap the ridge-side ends of the roofing panels 20.
  • the side parts 6, 7 run into horizontal or slightly inclined free longitudinal edges 8, 9, on which the ridge stones 3, 4 rest with their edges 10.
  • the ridge stones 3, 4 shown are ridge stones which have a cylindrical inner surface.
  • the element 1 is provided over its entire length with supports 12 which project beyond the outside of its side parts 6, 7 and which have a distance a from one another which corresponds to approximately one third of the ridge length.
  • the free longitudinal edges 8, 9 of the side parts 6, 7 have stops 13 for the edges 10 of the ridge stones 3, 4.
  • sealing strips 14 made of polyester fleece are glued on. The gluing takes place by means of hot glue, which is applied in two or three strips below the element 1.
  • the originally approximately 40 mm thick polyester elements are pressed together in the spherical curvatures of the roofing panels 20. This compression is primarily due to the weight of the ridge stones.
  • two rows of elongated ventilation holes 18 are provided on both sides of the ridge screed 2.
  • the ventilation holes 18 are surrounded by a raised collar all around to prevent water from entering.
  • the element 1 preferably has a length corresponding to the length of three ridge stones 3, 4 laid. It is laid in the ridge direction with other elements 1 such that the ends of the elements 1 overlap.
  • the ridge stones 3, 4 are fastened with the aid of clips or nails, which are hammered into the ridge plank 2 through the plastic of the element 1.
  • the side parts 6, 7 have a concave cross-sectional shape beginning at the edges of the central part 5, which ends in the free longitudinal edges 8, 9.
  • the cross section of the element 1 is thus approximately that of a pagoda roof, which gives good resilience for the compression of the sealing strips 14 when the ridge stones are lying on top, enables the sealing element 1 to lie optimally on the ridge screed 2 and also ensures good water drainage capacity.
  • FIG. 3 shows a eaves supply air element 30 as a second exemplary embodiment of the invention, which element consists of a corrugated base plate.
  • a sealing strip 14 'with a triangular profile is glued to the base plate, which presses against the roof covering plates from below and likewise fulfills both sealing and ventilation tasks.
  • the element 30 can, as the above-mentioned catalog "The Roof Professional” shows, also be used as a throat sealing element.
  • the element shown as an exemplary embodiment according to FIG. 1 can also be installed in the ridge area.
  • the fleece sealing elements are much more flexible than the PVC foam sealing elements, particularly in the initial loading. They therefore follow curvatures much better than the sealing strips according to the prior art.
  • the nonwoven is oriented during production so that the fibers are given a preferred orientation, the nonwoven strips being glued later so that the mean preferred orientation of the nonwoven fibers is perpendicular to the holding surface of the sealing strip with respect to the base surface. It is also possible to assemble several types of fleece in the transverse or longitudinal direction in at least two layers, which differ in their elasticity and permeability. For example, a medium-sized fleece strip will be relatively permeable, while the two outer ones have a lower permeability or elasticity.
  • the fleece in the longitudinal direction ie. H. in the axial direction of the base has a tensile strength which is preferably less than 50% of the tensile strength in the transverse direction thereto. This allows the fleece to follow the curvatures very well, while it is difficult to avoid crosswise to the direction.
  • the nonwoven material shown in the figures is colored from the tightness. It is also possible to dye the nonwoven fibers as a whole. The coloring should result in an optical matching of the material of the sealing strips with the roof.

Description

Die Erfindung betrifft ein Abdichtungs- und Belüftungselement zur Verwendung im Dachbereich, bestehend aus einer streifenförmigen Basis aus Kunststoff-Plattenmaterial, die mit wenigstens einem Teil ihrer Fläche gewöblte Dacheindeckungsplatten dichtend, jedoch einen Luftaustausch zulassend über- oder untergreift und an ihrer den Dacheindeckungsplatten zugewandten Seite wenigstens einen, sich der Wölbung der Dacheindeckungsplatten anschmiegenden Dichtungsstreifen trägt.The invention relates to a sealing and ventilation element for use in the roof area, consisting of a strip-shaped base made of plastic plate material, which seals at least part of its surface with roof covering panels that seal but grips over or under and allows air exchange and at least on its side facing the roof covering panels carries a sealing strip that clings to the curvature of the roof covering panels.

Ein solches Abdichtungs- und Belüftungselement, ausgestaltet als Firstabdichtungselement, ist in der EP-A-0288020 des Anmelders beschrieben. Es besteht aus einer streifenförmigen Basis aus Kunststoff-Plattenmaterial, an die sich zu beiden Längsseiten Seitenteile anschließen, die die Randbereiche der firstseitigen Dacheindekkungsplatten abdichtend, jedoch belüftbar, übergreifen. An der den Dacheindeckungsplatten zugewandten Seite ist ein Dichtungsstreifen aus einem flauschigen, luftdurchlässigen Kunststoffaser-Vlies angebracht. Auch wenn das Kunststoffaser-Vlies sehr stark zusammendrückbar ist, und es seine Elastizität auch bei krassen Temperaturunterschieden, wie sie auf dem dach beobachtet werden, bewahrt, reichen diese Eigenschaften nicht vollends aus, um eine sichere Abdichtung und hohe Luftdurchlässigkeit zu gewährleisten.Such a sealing and ventilation element, designed as a ridge sealing element, is described in the applicant's EP-A-0288020. It consists of a strip-shaped base made of plastic sheet material, to which side parts adjoin on both long sides, which overlap the edge areas of the ridge-side roof covering panels in a sealing but ventilatable manner. A sealing strip made of a fluffy, air-permeable synthetic fiber fleece is attached to the side facing the roof covering panels. Even if the plastic fiber fleece is very compressible and it retains its elasticity even in the case of sharp temperature differences, such as are observed on the roof, these properties are not entirely sufficient to ensure a secure seal and high air permeability.

Ein weiteres Abdichtungs- und Belüftungselement des Anmelders ist in der DE-A-28 42 123 beschrieben. Dieses Element hat sich in vielerlei Hinsicht bewährt. Hierbei weist das Abdichtungs- und Belüftungselement eine Basisplatte auf, bei der sich an einen die Firstbohle übergreifenden Scheitelbereich sich zu beiden Seiten Flügelteile anschließen. Die Flügel sind mit je einem unterhalb der Flügel liegenden Dichtungsstreifen versehen. Die Dichtungsstreifen bestehen insbesondere aus PVC-Schaumkunststoff, der eine breite Anlagefläche an dem Firstelement und in Richtung der Dacheindeckungsplatten einen sich verjüngenden, dreieckigen Querschnitt mit einer Spitze aufweist. Es hat sich gezeigt, daß Schaumkunststoff der genannten Art relativ kostspielig ist. Nach dem Zusammendrücken durch das Gewicht der Firststeine ist überdies keine optimale Lüftung möglich. Außerdem ist die Temperaturstandfestigkeit über die üblicherweise auf dem Dach herrschenden Temperaturen nicht zufriedenstellend. Andere Schaummaterialien, wie PU (Polyurethan), PE (Polyethylen) sind zwar preiswerter, haben aber im allgemeinen bezüglich der Standfestigkeit noch schlechtere Eigenschaften als die vorgenannten PVC- (Polyvinylchlorid) Schäume. Hinzu kommt, daß die Anschmiegefähigkeit der letztgenannten Schäume einer sowohl starke Wölbungen als auch Flachstrecken aufweisenden Dacheindekkungsplatte nicht gewachsen ist.Another sealing and ventilation element of the applicant is described in DE-A-28 42 123. This element has proven itself in many ways. Here, the sealing and ventilation element a base plate on which wing parts are connected on both sides to an apex area spanning the ridge screed. The wings are each provided with a sealing strip below the wing. The sealing strips consist in particular of PVC foam plastic, which has a wide contact surface on the ridge element and a tapering, triangular cross section with a tip in the direction of the roofing panels. It has been shown that foam plastic of the type mentioned is relatively expensive. After being compressed by the weight of the ridge stones, optimal ventilation is also not possible. In addition, the temperature stability over the temperatures usually prevailing on the roof is not satisfactory. Other foam materials, such as PU (polyurethane), PE (polyethylene) are cheaper, but generally have even worse properties than the aforementioned PVC (polyvinyl chloride) foams in terms of stability. In addition, the ability to fit the last-mentioned foams to a roof covering plate which has both strong curvatures and flat sections is not up to the task.

Es sei darauf hingewiesen, daß auch weitere Abdichtungs- und Belüftungselemente im Dachbereich bekannt sind, die ebenfalls mit derartigen Schaumstoffstreifen unterlegt sind. Hierzu zählen beispielweise Traufenzuluftelemente, Kehlabdichtungselemente und Gratabdichtungselemente. Vorgenannte Aufgabenstellung läßt sich mutatis mutandis auch auf die letzgenannten Abdichtungs- und Lüftungselemente übertragen.It should be noted that other sealing and ventilation elements in the roof area are also known, which are also underlaid with such foam strips. These include, for example, eaves supply elements, throat sealing elements and ridge sealing elements. The aforementioned task can also be mutatis mutandis transferred to the latter sealing and ventilation elements.

Die Aufgabe wird gelöst bei einem Abdichtungs- und Belüftungselement der eingangs genannten Art mit den Dichtungsstreifen, bei dem der Dichtungsstreifen aus einem Vlies mit Fasern in einer Vorzugsrichtung derart angeordnet ist, daß die mittlere Vorzugsrichtung der Vliesfasern senkrecht zur Haltefläche der Dichtungsstreifen in Bezug auf die Basisoberfläche liegen.The object is achieved in a sealing and ventilation element of the type mentioned at the outset with the sealing strips, in which the sealing strip made of a nonwoven with fibers is arranged in a preferred direction such that the central preferred direction of the nonwoven fibers perpendicular to the surface of the sealing strip in relation to the base surface.

Derartige Vliese, z. B. hergestellt aus Polyester-Fasern, sind beispielweise bekannt als Adsorptionsmaterial in Dunstabzugshauben, als Filtermaterial und dergleichen; vgl. Artikel "Vliesstoffe" aus RÖMPP, Chemielexikon, 8. Auflage. Sie werden beispielweise unter dem Produktnamen und Warenzeichen "Vilidon" von der Firma Carl Freudenberg, Weinheim, angeboten.Such fleeces, e.g. B. made of polyester fibers, are known for example as an adsorbent material in extractor hoods, as a filter material and the like; see. Article "Nonwovens" from RÖMPP, chemical dictionary, 8th edition. They are offered, for example, under the product name and trademark "Vilidon" by the company Carl Freudenberg, Weinheim.

Es sei in diesem Zusammenhang darauf hingewiesen, daß die Veröffentlichtung WO 85/01538 bereits eine Dacheindeckungsplatte zeigt, bei der die Oberfläche mit einem Abdichtungsstreifen verbunden ist, der auch aus aufrechten Fasern bestehen kann. Es handelt sich nicht um sein Vlies. Insbesondere ist das Vlies bei der bekannten Dacheindeckungsplatte bereits direkt mit dieser verbunden, so daß ein Ausgleich der Balligkeit bzw. der Wölbungen im wesentlichen nicht erforderlich ist.It should be pointed out in this connection that the publication WO 85/01538 already shows a roof covering plate in which the surface is connected with a sealing strip, which can also consist of upright fibers. It is not his fleece. In particular, the fleece is already directly connected to the known roofing plate, so that a balancing of the crown or the curvatures is essentially not necessary.

Neben den Vorteilen, die sich der Aufgabenstellung folgend erreichen lassen, hat sich als besonderer Vorteil herausgestellt, daß sich die freistehenden Faserenden des Vlieses mit der rauhen Oberfläche der Dacheindeckungsplatten, Dachziegel und dergleichen verhaken, so daß praktisch kein Herausziehen und Herauspressen im zusammengepreßten Zustand auftritt. Insbesondere diese Erscheinung war bei den bekannten Dichtungsstreifen aus Schaumkunststoffen nicht zu beobachten. Hier kam es wegen der relativ glatten Oberflächen zu den genannten nachteilgen Erscheinungen.In addition to the advantages that can be achieved according to the task, it has turned out to be a particular advantage that the free-standing fiber ends of the fleece get caught with the rough surface of the roofing tiles, roof tiles and the like, so that practically no pulling out and pressing out occurs in the compressed state. In particular, this phenomenon was not observed in the known sealing strips made of foam plastics. Here, because of the relatively smooth surfaces, the above-mentioned adverse phenomena occurred.

Ein wesentlicher Vorteil bei den neuartigen Dichtungsstreifen ist die hohe Luftdurchlässigkeit. Um eine Ausgewogenheit zwischen Zusammenpreßbarkeit und Luftdurchlässigkeit zu erreichen, wird vorgeschlagen, daß die Luftdurchlässigkeit so bemessen ist, daß bei einem Luftdruckunterschied außerhalb und innerhalb des Streifens von 20 Pa eine Luftdurchströmgeschwindigkeit von mindestens 0,5 m/s erreicht wird. Das Raumgewicht des Vlieses liegt vorzugweise zwischen 10 - 15 kg pro m³.A major advantage of the new type of sealing strip is the high air permeability. In order to achieve a balance between compressibility and air permeability, it is proposed that the Air permeability is such that an air flow velocity of at least 0.5 m / s is achieved with an air pressure difference outside and inside the strip of 20 Pa. The density of the fleece is preferably between 10 - 15 kg per m³.

Die Zusammenpreßbarkeit des Vlieses, aber auch die Elastizität, ist gegenüber den Werkstoffen des Standes der Technik wesentlich verbessert. Die Dacheindeckungsplatten, insbesondere Dachziegel, weisen eine wellenartige, gewölbte Struktur auf. Dabei ergeben sich "Täler" und "Höhen". Der Vlies soll diesen Strukturen ohne Schwierigkeiten folgen können, ohne daß es zu Lücken oder Auslassungen kommt. Als Richtwert hat sich herausgestellt, daß bei aufliegendem Firstziegel beispielsweise ein Zusammenpresser von maximal bis zu 10 % des ungepreßten Zustandes erfolgt, wenn das Material auf einer ebenen Fläche aufliegt. Dies entspricht etwa der Vorschrift, daß bei einem Anpreßdruck von 1 N/cm² des Vliesmaterial zwischen 10 % und 50 % seiner Ursprungsdicke zusammengedrückt wird. Es sei aber darauf hingewiesen daß auch ein Zusammendrücken praktisch auf eine Dicke "0" möglich ist. Hier ist dann zwar die Belüftung unterbrochen. Da aber bei der wellenartigen Struktur der Dacheindeckungsplatten immer genügend Fläche zur Verfügung steht, in denen das Material nicht zusammengedrückt wird, verbleibt eine genügende Austauschfläche.The compressibility of the fleece, but also the elasticity, is significantly improved compared to the materials of the prior art. The roofing panels, in particular roof tiles, have a wave-like, arched structure. This results in "valleys" and "heights". The fleece should be able to follow these structures without difficulty, without gaps or omissions. As a guideline, it has been found that with the ridge tile lying on top, for example, a maximum of up to 10% of the uncompressed state occurs when the material rests on a flat surface. This corresponds approximately to the requirement that at a contact pressure of 1 N / cm² of the nonwoven material between 10% and 50% of its original thickness is compressed. However, it should be pointed out that compression to a thickness of "0" is practically possible. The ventilation is then interrupted here. However, since there is always enough space available in the wave-like structure of the roofing panels, in which the material is not compressed, there remains a sufficient exchange surface.

Bei der Lage "vor Ort" ergeben sich stärkere Zusammenpressungen bei den auftretenden Wölbungen und schwächere in den Tälern der darunterliegenden Firstziegel. Dies gilt umgekehrt auch für den Fall, daß der Abdichtungsstreifen nach oben weist, wie es beispielsweise bei Traufenzuluftelementen der Fall ist. Dabei ist hervorzuheben, daß das Vlies allen vorkommenden Kurvaturen gut folgt, also beispielsweise keine Lücke läßt, wenn ein Zusammendrücken rechts und links von einem nicht-zusammengedrückten Mittelbereich erfolgt.In the "on-site" situation, there is greater compression when the arches appear and weaker ones in the valleys of the ridge tiles below. Conversely, this also applies in the event that the sealing strip points upward, as is the case, for example, with eaves supply air elements. It should be emphasized that the fleece follows all of the curvatures that occur, that is, for example, does not leave a gap if it is compressed to the right and left of a non-compressed one Mid-range takes place.

Als Fasermaterialien für das Vlies eignen sich insbesondere Kunstfasern, vorzugsweise Polyester-Fasern mit einem hohen Rückstellvermögen und einer hervorragenden Standfestigkeit. Es sei aber nicht ausgeschlossen, daß auch andere Kunststoff-Fasern verwendet werden, oder daß das Vlies aus Glasfasern besteht. Im letzteren Fall werden die Fasern vorzugsweise hydrophobisiert, d. h. wasserabstoßend gemacht. Auch natürliches Fasermaterial, wie Kokos- oder Ramiefasern, sind möglich.In particular, synthetic fibers, preferably polyester fibers with a high resilience and excellent stability, are suitable as fiber materials for the nonwoven. However, it should not be excluded that other plastic fibers are used, or that the fleece consists of glass fibers. In the latter case, the fibers are preferably hydrophobized, i.e. H. made water repellent. Natural fiber material such as coconut or ramie fibers are also possible.

Zur Herstellung des Vlieses können die Fasern untereinander verhakt sein. Es ist jedoch vorzugsweise eine Schmelzverbindung oder eine Kunstharzverklebung der Fasern untereinander gewählt. Die Durchmesser der Fasern liegen bei etwa 10 - 50 µm. Die Stapellänge wird möglichst hoch gewählt, um jede Art von Fusselbildung zu vermeiden.To produce the fleece, the fibers can be hooked together. However, a fusion bond or a synthetic resin bonding of the fibers to one another is preferably selected. The diameter of the fibers is around 10 - 50 µm. The stack length is chosen to be as high as possible in order to avoid any type of lint formation.

Die Höhe der Dichtungsstreifen richtet sich nach der Struktur und der Tiefe (Balligkeit) der darüberliegenden Firstziegel. Im allgemeinen werden die Dichtungsstreifen eine Höhe von 30 - 80 mm haben, wobei jedoch auch Höhen von 10 - 100 mm nicht auszuschließen sind. Vorzugsweise haben sie einen rechteckigen Querschnitt. Es ist jedoch auch möglich, einen trapezförmigen oder dreieckförmigen Querschnitt mit divergierendem oder konvergierendem Querschnitt zu wählen, wobei hier zu berücksichtigen ist, daß zahlreiche Typen von Dacheindeckungsplatten existieren, die je nach Erfordernissen zu behandeln sind.The height of the sealing strips depends on the structure and the depth (crowning) of the ridge tiles above. In general, the sealing strips will have a height of 30 - 80 mm, although heights of 10 - 100 mm cannot be ruled out. They preferably have a rectangular cross section. However, it is also possible to choose a trapezoidal or triangular cross section with a diverging or converging cross section, whereby it should be taken into account here that numerous types of roofing tiles exist which have to be treated as required.

Die Fasern können als Ganzes eingefärbt sein; es ist jedoch auch möglich, das Vlies nur auf der Sichtseite über eine bestimmte Schichtdicke einzufärben. Wie bereits gesagt, kann die Anwendung der Dichtungsstreifen bei verschiedenen Elementen, die im Dachbereich zur Abdichtung und Belüftung Verwendung finden, angewandt werden. Beispielsweise sind Dichtungsstreifen bekannt bei Traufendichtungselementen (vgl. DE-C-2 910 129) oder bei Kehlabdichtungsstreifen (vgl. Katalog "Der Dachprofi", herausgegeben von der Fleck GmbH und veröffentlicht im März 1986).The fibers can be colored as a whole; However, it is also possible to dye the fleece only on the visible side over a certain layer thickness. As already said, the application of the sealing strips to various elements used for sealing in the roof area and ventilation are used. For example, sealing strips are known for eaves sealing elements (see DE-C-2 910 129) or for throat sealing strips (see catalog "Der Dachprofi", published by Fleck GmbH and published in March 1986).

Schließlich sei noch darauf hingewiesen, daß im Gegensatz zu dem Stand der Technik es im vorliegenden Fall möglich ist, einen weichmacherfreien Klebstoff zu verwenden, der eine wesentlich bessere Temperaturstandfestigkeit aufweist als ein Kleber, wie er für die bekannten Dichtungsstreifen verwendet wurde. So läßt sich vorzugsweise das Vlies auf einer Basisplatte aus Polyethylen mittels Heißkleber befestigen.Finally, it should be pointed out that, in contrast to the prior art, it is possible in the present case to use a plasticizer-free adhesive which has a substantially better temperature stability than an adhesive such as was used for the known sealing strips. The fleece can preferably be attached to a base plate made of polyethylene using hot glue.

Ausführungsbeispiele der Erfindung sind in der beigefügten Zeichnung dargestellt. Die Figuren der Zeichnung zeigen:

Figur 1
ein erstes Ausführungsbeispiel;
Figur 2
einen Querschnitt durch ein Abdichtungs- und Belüftungselement gemäß Figur 1;
Figur 3
zeigt als weiteres Ausführungsbeispiel ein Traufenzuluftelement.
Embodiments of the invention are shown in the accompanying drawing. The figures in the drawing show:
Figure 1
a first embodiment;
Figure 2
a cross section through a sealing and ventilation element according to Figure 1;
Figure 3
shows a eaves supply element as a further embodiment.

In Figur 1 ist von einer Firstabdichtung für mit Dacheindeckungsplatten eingedeckte Dächer insbesondere ein Abdichtungs- und Belüftungselement 1 dargestellt (im folgenden Element 1). Auf diesem an einer Firstbohle 2 befestigten Element 1 sind den oberen Abschluß des Firstes bildende Firststeine 3 und 4 verlegt, von denen einer auf dem Element 1 aufliegt (strichpunktiert) und der andere oberhalb, also vor dem Auflegen (in ausgezogenen Linien) dargestellt ist. Zwischen den Firststeinen 3, 4 und den in Figur 2 dargestellten Dacheindeckungsplatten 20 wird das aus relativ steifem Polyethylen hergestellte Element 1 angeordnet. Das Element 1 besitzt einen auf der Oberseite der Firstbohle 2 aufliegenden flachen Mittelteil 5, an den sich beidseitig Seitenteile 6 und 7 anschließen, welche die firstseitigen Enden der Dacheindeckungsplatten 20 dichtend übergreifen. Die Seitenteile 6, 7 laufen in waagerechte oder wenig geneigte freie Längsränder 8, 9 aus, auf denen die Firststeine 3, 4 mit ihren Rändern 10 aufliegen. FIG. 1 shows , in particular, a sealing and ventilation element 1 of a ridge seal for roofs covered with roofing panels (element 1 in the following). On this element 1 fastened to a ridge screed 2, ridge stones 3 and 4 forming the upper end of the ridge are laid, one of which rests on element 1 (dash-dotted) and the other above, that is to say before laying on (in solid lines). The element 1 made of relatively rigid polyethylene is arranged between the ridge stones 3, 4 and the roof covering plates 20 shown in FIG. The element 1 has a flat middle part 5 lying on the top of the ridge screed 2, to which side parts 6 and 7 adjoin on both sides, which sealingly overlap the ridge-side ends of the roofing panels 20. The side parts 6, 7 run into horizontal or slightly inclined free longitudinal edges 8, 9, on which the ridge stones 3, 4 rest with their edges 10.

Bei den dargestellten Firststeinen 3, 4 handelt es sich um Firststeine, die eine zylindrische Innenfläche aufweisen. Das Element 1 ist auf seiner gesamten Länge mit über die Außenseite seiner Seitenteile 6, 7 herausragenden Auflagern 12 versehen, welche einen Abstand a voneinander haben, der etwa einem Drittel der Firststeinlänge entspricht. Die freien Längsränder 8, 9 der Seitenteile 6, 7 besitzen Anschläge 13 für die Ränder 10 der Firststeine 3, 4. Unterhalb der freien Längsränder 8, 9 der Seitenteile 6, 7 sind Dichtungsstreifen 14 aus Polyester Vlies angeklebt. Das Ankleben erfolgt mittels Heißkleber, der in zwei oder drei Streifen unterhalb des Elementes 1 aufgebracht wird. Durch das Polyester-Vlies erfolgt bei einem gewissen Luftdruckunterschied, wie er durch den normal wehenden Wind ausgelöst wird, die zur Belüftung erforderliche Luft hindurchgedrückt, wobei Schnee und Regen abgewiesen werden. Die ursprünglich etwa 40 mm starken Polyester-Elemente werden im Bereich der balligen Wölbungen der Dacheindeckungsplatten 20 zusammengedrückt. Dieses Zusammendrücken erfolgt in erster Linie aufgrund der Schwere der Firststeine.The ridge stones 3, 4 shown are ridge stones which have a cylindrical inner surface. The element 1 is provided over its entire length with supports 12 which project beyond the outside of its side parts 6, 7 and which have a distance a from one another which corresponds to approximately one third of the ridge length. The free longitudinal edges 8, 9 of the side parts 6, 7 have stops 13 for the edges 10 of the ridge stones 3, 4. Below the free longitudinal edges 8, 9 of the side parts 6, 7, sealing strips 14 made of polyester fleece are glued on. The gluing takes place by means of hot glue, which is applied in two or three strips below the element 1. With a certain difference in air pressure, such as that caused by the normally blowing wind, the polyester fleece pushes the air required for ventilation, rejecting snow and rain. The originally approximately 40 mm thick polyester elements are pressed together in the spherical curvatures of the roofing panels 20. This compression is primarily due to the weight of the ridge stones.

Zur Ermöglichung eines weiteren Luftaustausches sind zwei Reihen von länglichen Lüftungslöchern 18 zu beiden Seiten der Firstbohle 2 vorgesehen. Die Lüftungslöcher 18 sind von einem hochstehenden Kragen ringsherum umgeben, um das Einlaufen von Wasser zu verhindern.To enable further air exchange, two rows of elongated ventilation holes 18 are provided on both sides of the ridge screed 2. The ventilation holes 18 are surrounded by a raised collar all around to prevent water from entering.

Das Element 1 hat vorzugsweise eine der Länge von drei verlegten Firststeinen 3, 4 entsprechende Länge. Es ist in Firstrichtung mit anderen Elementen 1 derartig verlegt, daß sich die Enden der Elemente 1 überlappen. Bei der Verlegung wird das Element 1 zunächst auf die Firstbohle 2 aufgelegt und dort vernagelt. Anschließend werden die Firststeine 3, 4 mit Hilfe von Klammern oder Nägeln, die durch den Kunststoff des Elementes 1 in die Firstbohle 2 eingeschlagen werden, befestigt. Wie sich insbesondere aus Figur 2 ergibt, besitzen die Seitenteile 6, 7 eine an den Rändern des Mittelteils 5 beginnende konkave Querschnittsform, welche in die freien Längsränder 8, 9 ausläuft. Der Querschnitt des Elementes 1 ist damit etwa der eines Pagodendaches, welches bei aufliegenden Firststeinen eine gute Nachgiebigkeit für das Zusammendrücken der Dichtungsstreifen 14 ergibt, eine optimale Anlage des Abdichtungselementes 1 an der Firstbohle 2 ermöglicht und außerdem eine gute Wasserabtropffähigkeit gewährleistet.The element 1 preferably has a length corresponding to the length of three ridge stones 3, 4 laid. It is laid in the ridge direction with other elements 1 such that the ends of the elements 1 overlap. When laying the element 1 is first placed on the ridge screed 2 and nailed there. Then the ridge stones 3, 4 are fastened with the aid of clips or nails, which are hammered into the ridge plank 2 through the plastic of the element 1. As can be seen in particular from FIG. 2 , the side parts 6, 7 have a concave cross-sectional shape beginning at the edges of the central part 5, which ends in the free longitudinal edges 8, 9. The cross section of the element 1 is thus approximately that of a pagoda roof, which gives good resilience for the compression of the sealing strips 14 when the ridge stones are lying on top, enables the sealing element 1 to lie optimally on the ridge screed 2 and also ensures good water drainage capacity.

In Figur 3 ist als zweites Ausführungsbeispiel der Erfindung ein Traufenzuluftelement 30 dargestellt, das aus einer korrugierten Basisplatte besteht. Auf die Basisplatte ist ein Abdichtungsstreifen 14' mit einem dreieckförmigen Profil aufgeklebt, der gegen die Dacheindeckungsplatten von unten andrückt und ebenfalls sowohl Abdichtungs- als auch Belüftungsaufgaben erfüllt. Das Element 30 kann, wie der eingangs genannte Katalog "Der Dachprofi" ausweist, auch ohne weiteres als Kehlabdichtungselement verwendet werden. Das als Ausführungsbeispiel gemäß Figur 1 dargestellte Element kann auch im Gratbereich eingebaut werden. FIG. 3 shows a eaves supply air element 30 as a second exemplary embodiment of the invention, which element consists of a corrugated base plate. A sealing strip 14 'with a triangular profile is glued to the base plate, which presses against the roof covering plates from below and likewise fulfills both sealing and ventilation tasks. The element 30 can, as the above-mentioned catalog "The Roof Professional" shows, also be used as a throat sealing element. The element shown as an exemplary embodiment according to FIG. 1 can also be installed in the ridge area.

In der nachfolgenden Tabelle sind die Ergebnisse von Eindruckversuchen dargestellt, die an Dichtungsstreifen gemäß Stand der Technik und an Dichtungsstreifen der beschriebenen Art durchgeführt wurden.The table below shows the results of impression attempts shown, which were carried out on weather strips according to the prior art and on weather strips of the type described.

Es zeigt sich, daß die Vlies-Dichtungselemente insbesondere in der Anfangsbelastung sehr viel nachgiebiger sind als die PVC-Schaum-Dichtungselemente. Sie folgen daher Wölbungen wesentlich besser als die Dichtungsstreifen gemäß Stand der Technik.It can be seen that the fleece sealing elements are much more flexible than the PVC foam sealing elements, particularly in the initial loading. They therefore follow curvatures much better than the sealing strips according to the prior art.

Es sei weitethin darauf hingewiesen, daß das Vlies bei der Herstellung so ausgerichtet wird, daß die Fasern eine Vorzugsausrichtung bekommen, wobei die Vliesstreifen später so geklebt werden, daß die mittlere Vorzugsausrichtung der Vliesfasern senkrecht zur Haltefläche des Dichtungsstreifens in Bezug auf die Basisoberfläche liegt. Es ist auch möglich, mehrere Vliesarten in Quer- oder Längsrichtung in wenigstens zwei Schichten zusammenzusetzen, die sich in ihrer Elastizität und Durchlässigkeit unterscheiden. Beispielsweise wird ein mittlerer Vliesstreifen relativ durchlässig sein, während die beider äußeren eine geringere Durchlässigkeit bzw. Elastizität aufweisen.It should also be noted that the nonwoven is oriented during production so that the fibers are given a preferred orientation, the nonwoven strips being glued later so that the mean preferred orientation of the nonwoven fibers is perpendicular to the holding surface of the sealing strip with respect to the base surface. It is also possible to assemble several types of fleece in the transverse or longitudinal direction in at least two layers, which differ in their elasticity and permeability. For example, a medium-sized fleece strip will be relatively permeable, while the two outer ones have a lower permeability or elasticity.

Weiterhin ist vorteilhaft, daß das Vlies in Längsrichtung, d. h. in Achsenrichtung der Basis, eine Zugfestigkeit besitzt, die vorzugsweise weniger als 50 % der Zugfestigkeit in Querrichtung dazu ist. Damit kann das Vlies den Wölbungen sehr gut folgen, während ein Ausweichen quer zu der Richtung erschwert wird.It is also advantageous that the fleece in the longitudinal direction, ie. H. in the axial direction of the base has a tensile strength which is preferably less than 50% of the tensile strength in the transverse direction thereto. This allows the fleece to follow the curvatures very well, while it is difficult to avoid crosswise to the direction.

Das in den Figuren dargestellte Vliesmaterial ist von den Dichtheiten her eingefärbt. Es ist auch möglich, die Vliesfasern insgesamt zu färben. Die Färbung soll eine optische Angleichung des Materials der Dichtungsstreifen gegenüber dem Dach ergeben.

Figure imgb0001
The nonwoven material shown in the figures is colored from the tightness. It is also possible to dye the nonwoven fibers as a whole. The coloring should result in an optical matching of the material of the sealing strips with the roof.
Figure imgb0001

Claims (19)

  1. A sealing and ventilating element for use in roofs, consisting of a strip-shaped hose of plastic sheet material, at least part of the surface of which engages above or below curved roofing panels so as to provide a sealing action but allow air exchange, and which, at its side facing the roofing panels, bears at least one sealing strip matching the curvature of the roofing panels, characterised in that the sealing strip (14; 14') is so arranged from a fleece having fibres in a privileged direction that the average privilege direction of the fleece fibres is at right angles to the holding surface of the sealing strip (14, 14') with respect to the base surface.
  2. An element according to claim 1, characterised in that the fleece consists of synthetic fibres.
  3. An element according to claim 2, characterised in that the fleece consists of polyester fibres.
  4. An element according to claims 1 to 3, characterised in that the fleece material has a specific weight per unit volume of 10 - 15 kg/m³.
  5. An element according to claim 1 or 2, characterised in that the fleece consists of preferably waterproofed glass fibres.
  6. An element according to claim 1, characterised in that the fleece consists of natural fibres, e.g. coconut or ramie fibres.
  7. An element according to claims 1 to 5, characterised in that the fleece has, in the longitudinal direction, i.e., in the axial direction of the base, a tensile strength of less than 50% of the tensile strength transversely thereto.
  8. An element according to claim 1, characterised in that the base sheet consists of polyethylene to which the fleece is stuck by means of a hot adhesive.
  9. An element according to claims 1 to 8, characterised in that the fibres of the fleece are interconnected to form a bulky fleece by fusion or by synthetic resin bonding.
  10. An element according to claims 1 to 9, characterised in that the unpressed sealing strip (14; 14') has an air permeability such that an air throughflow speed of at least 0.5 m/s is achieved for an external and internal air pressure difference to 20 Pa at the strip.
  11. An element according to claim 1, characterised in that the height of the sealing strip (14; 14') is between 10 and 100, preferably 30 and 80 mm.
  12. An element according to claim 1, characterised in that the sealing strip (14; 14') in the unpressed state has a rectangular cross-section.
  13. An element according to claims 1 to 12, characterised in that the sealing strip in the unpressed state has a cross-section which tapers towards the free end, preferably a trapesoidal or triangular cross-section.
  14. An element according to any one of the preceding claims, characterised in that the fleece is built up from at least two layers of different elasticity and permeability in the transverse or longitudinal direction.
  15. An element according to any one of the preceding claims, characterised in that the fleece fibres are coloured.
  16. An element according to any one of the preceding claims, characterised in that the sealing strips (14; 14') are coloured on their visible sides.
  17. An element according to claim 1, characterised in that the element is a ridge sealing and ventilating element for mounting between the ridge board and ridge tiles, with an apex zone which engages over the ridge board and which is followed on both longitudinal sides by wing parts which engage in sealing-tight relationship, but so as to provide ventilation, over the edge zones of the roofing panels adjacent the ridge and which at their underside are each lined by a sealing strip of fleece.
  18. An element according to claim 1, characterised in that the element is a hip sealing and ventilating element for mounting between the hip board and hip tiles, with an apex zone which engages over the hip board and which is followed on both sides by wing parts which engage in sealing-tight relationship, but so as to provide ventilation, over the edge zones of the roofing panels adjacent the hip and which at their underside are each lined by a sealing strip of fleece.
  19. An element according to claim 1, characterised in that the element is a valley sealing or eaves ventilating element.
EP89114868A 1988-10-22 1989-08-11 Sealing and ventilating element with underlying watertight strips Expired - Lifetime EP0365774B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8813328U 1988-10-22
DE8813328U DE8813328U1 (en) 1988-10-22 1988-10-22

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EP0365774A1 EP0365774A1 (en) 1990-05-02
EP0365774B1 true EP0365774B1 (en) 1993-04-14

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DE (2) DE8813328U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438140A1 (en) * 1994-10-25 1996-05-02 Oskar Fleck Ridge beam water run=off for roof
WO1997035080A1 (en) * 1996-03-15 1997-09-25 Mage GmbH Werke für Kunststoff- und Metallverarbeitung Ridgeboard ventilation system
DE19835002A1 (en) * 1998-07-21 2000-02-10 Mage Gmbh Roof ventilation unit
DE19942255C1 (en) * 1999-09-04 2001-10-11 Wolfram Schuermann Sealing strip, for roof ridge ventilation, has 2 angled arms on either side of application strip along ridge beam respectively supporting ridge tile and attached to sealing element applied to roof covering
DE102007052061A1 (en) 2007-10-30 2009-05-14 Cotexx Gmbh Roof, eaves or burr sealing device for ventilated roof of building, has band region with air intake openings and formed by knitted fabric and/or thread exhibiting predetermined mesh width or size and forming mesh band region

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117391A2 (en) * 1983-02-26 1984-09-05 BRAAS & CO. GMBH Ridge or hip covering for roofs covered with panels

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842123C2 (en) * 1978-09-28 1982-11-18 Oskar 4354 Datteln Fleck Ridge sealing
DE3026304A1 (en) * 1980-07-11 1982-02-11 Mestran GmbH, 2820 Bremen Thatched roof ridge covering - has fibrous structured finish or covering on sloping panels
DK454283A (en) * 1983-09-30 1985-03-31 Eternit Fab Dansk As ROOF PLATE, PROCEDURE FOR PREPARING THE SAME, AND SEALING TAPE FOR SUCH A ROOF PLATE
DE3522608A1 (en) * 1985-06-25 1987-01-08 Oskar Fleck Roof ridge sealing element with subadjacent sealing strips
DE3863573D1 (en) * 1987-04-24 1991-08-14 Oskar Fleck FIRST SCAL WITH OVERLAY FIRST SEALING AND VENTILATION ELEMENT.
DE8713110U1 (en) * 1987-09-30 1988-01-21 Fleck, Oskar, 4354 Datteln, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117391A2 (en) * 1983-02-26 1984-09-05 BRAAS & CO. GMBH Ridge or hip covering for roofs covered with panels

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DE58904066D1 (en) 1993-05-19
EP0365774A1 (en) 1990-05-02

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