EP1334249B1 - Device and method for fixing a roof sealing strip - Google Patents

Device and method for fixing a roof sealing strip Download PDF

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Publication number
EP1334249B1
EP1334249B1 EP01996658A EP01996658A EP1334249B1 EP 1334249 B1 EP1334249 B1 EP 1334249B1 EP 01996658 A EP01996658 A EP 01996658A EP 01996658 A EP01996658 A EP 01996658A EP 1334249 B1 EP1334249 B1 EP 1334249B1
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EP
European Patent Office
Prior art keywords
holding element
fastening screw
roof
fastening
orifice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01996658A
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German (de)
French (fr)
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EP1334249A1 (en
Inventor
Hans-Jürgen Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOCH, HANS-JUERGEN EN B/S/T GMBH KOCH KUNSTSTOFFTE
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Individual
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Priority to EP01996658A priority Critical patent/EP1334249B1/en
Publication of EP1334249A1 publication Critical patent/EP1334249A1/en
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Publication of EP1334249B1 publication Critical patent/EP1334249B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/144—Mechanical fastening means
    • E04D5/145—Discrete fastening means, e.g. discs or clips
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
    • E04D3/3603—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer the fastening means being screws or nails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/141—Fastening means therefor characterised by the location of the fastening means
    • E04D5/143—Fastening means therefor characterised by the location of the fastening means in the field of the flexible material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/148—Fastening means therefor fastening by gluing

Definitions

  • the present invention relates to a device for fastening a roofing membrane by means of a holding element and a fastening element to a roof substructure. Furthermore, the present invention relates to a method for fixing a roof waterproofing membrane on a roof substructure.
  • roofing membranes are now often used. These cover a thermal barrier layer under which there is usually a vapor barrier layer again. This structure is then supported by a corresponding support structure of the roof.
  • disc-shaped holding elements in the form of holding plates are conventionally used.
  • a device for fixing a sealing layer to a substrate which has a retaining plate which is fastened by means of a fastening screw to the supporting structure of the roof.
  • the device of the prior art has the disadvantage that the configuration of the holding element is very complicated and expensive.
  • the fastening screw used is a special screw with an upper reaching to the end of the screw shaft threaded portion, which must also be pre-assembled in the threaded sleeve.
  • a specially designed complex mounting device is also required for the application of the fastening device.
  • a device for fixing a roof waterproofing membrane with a substantially flat on its underside retaining element having a significantly greater thickness center portion, and a fastening element which penetrates the underlying under the retaining element sealing sheet and these and the holding element fixed to the roof substructure, wherein the fastening element is a fastening screw, which has at its lower end portion a threaded portion for positive engagement in the roof substructure and at its upper end portion has a threaded portion for positive engagement with the retaining element.
  • this prior art is disadvantageous in that it can not be used for application to a, applied to the top of a thermal insulation layer of a flat roof construction roofing membrane, since he would penetrate this roofing membrane due to its geometric configuration and thus makes a weather-tight seal of the roof structure impossible ,
  • the present invention is therefore an object of the invention to provide a device and a method for securing a roof waterproofing membrane of a roof substructure, which has a very simple structure, creates a secure seal and can be mounted very easily.
  • the holding member has a central through hole for positively receiving the upper end portion of the fixing screw and the fixing screw at the upper end portion Actuator, which is actuated by means of a suitable tool, wherein the inner diameter of the through hole of the holding member is smaller than the outer diameter of the upper threaded portion of the fastening screw and the upper threaded portion has a self-tapping thread, wherein the length of the upper threaded portion is shorter than the length of the central passage opening is.
  • the device according to the invention for fixing a roof sealing strip which is formed only of two elements, one of which, namely the holding element, can be easily manufactured and the other, namely the fastening screw can be a standard standard element in the trade, Particularly simple and effective can be applied to the roof waterproofing membrane.
  • the device according to the invention is therefore particularly simple and composed of elements which can be produced or obtained particularly inexpensively.
  • the threaded portion does not unnecessarily increase the passage opening of the roofing membrane or a defined contact surface is reached on the shank of the screw in a region in which there is no thread, which leads to increase the tightness of Voraum against external weather influences.
  • the actuating device is designed in the form of an external hexagon, and an annular abutment flange is provided between the external hexagon and the upper threaded portion of the fastening screw, by means of which an extremely uniform force transmission on the one hand and an increased sealing effect on the other hand are achieved.
  • the actuating device may be in the form of a countersunk screw head which can be screwed into a complementary section in the retaining element. This is advantageously achieved that the fastening screw does not project beyond the retaining element.
  • the fastening screw can be screwed in and released in a simple manner.
  • the actuating means may be in the form of a head having a substantially flat surface and a ring provided with notches between a screw shank and a flat surface.
  • the upper side of the middle section of the retaining element is advantageously flattened, which advantageously achieves a planar contact of the head section of the fastening screw on the retaining element.
  • the passage opening of the holding element is widened from the upper side, such that the head section of the fastening screw is partially or preferably completely accommodated in the widening.
  • the expansion can be filled with sealing material, which ensures their secure seal against the ingress of weather influences, in particular rainwater.
  • sealing material ensures their secure seal against the ingress of weather influences, in particular rainwater.
  • a corrosion protection of the fastening screw is created.
  • a sealing cap can be introduced into the expansion, for example, clamped or screwed, so that a secure seal over a long time is excellent guaranteed.
  • the sealing element has additional holding elements, such as securing elements for roof catching devices, especially when using the fastening device not only on flat but also on sloping roofs.
  • an extremely simple assembly achieving a secure sealing of the outer roof skin, is achieved to the outside, wherein, especially when forming the retaining element as a holding plate, an exact final positioning or alignment of the holding element to achieve its function is no longer required.
  • the retaining plate which at least partially rotates when applied, can take any final assembly position and forms in this final assembly position a secure seal, as in the prior art only by consuming measures both constructive and assembly-technical type achievable is.
  • the fastening device according to the invention is vending machine, so it can be applied to existing already existing application and screwing on the roof.
  • a rubber or silicone disc between the holding element and roof waterproofing membrane is used, whereby a damping material adapted to the insulating material is achieved.
  • a fastening device 1 according to the invention is shown in sectional view.
  • the fastening device 1 is used for fastening a roofing membrane 5 of a roof substructure 3, wherein the roofing membrane 5 may be in a known manner a plastic film layer, a bituminous sheet or a non-laminated or laminated metal sheet.
  • thermal barrier coating 7 for example, from suitable thermal insulation material, of which in turn is a film layer 9, which serves for example as a vapor barrier.
  • the roofing membrane 5, the thermal barrier coating 7 and the film layer 9 rest on a supporting structure 11 of the roof.
  • the fastening device 1 is provided.
  • This has a holding element 13, which is dish-shaped in the illustrated example and whose bottom 15 is formed substantially flat.
  • the holding element 13 has a center section 17 which has a considerably greater thickness than the thickness of the remaining holding element 13.
  • this middle section 17 Centrally located in this middle section 17 is a passage opening 19, which extends from the upper side 14 of the holding element 13 to its underside 15.
  • a fastening element 21 is provided, which in the example shown is a conventional fastening screw 23.
  • the Fixing screw 23 has a lower end portion 25 which has a tip 27 and a threaded portion 29.
  • the threaded portion 29 is formed as a self-tapping thread which engages when screwing the fastening screw 23 with the support structure eleventh
  • a threaded portion 35 is provided which has an external thread, the outer diameter is greater than the inner diameter of the through hole 19.
  • the threaded portion 35 is formed as a self-tapping thread, which during screwing the fastening screw 23 itself cuts into the inner wall of the passage opening 19.
  • the length of the threaded portion 35 is less than the length of the through hole 19, so that the threaded portion 35 does not penetrate into the roof sealing sheet 5.
  • the upper end region 33 of the fastening screw 23 furthermore has an actuating device 37, which in the example shown is designed as an external hexagon 39.
  • the outer diameter is slightly larger than the outer contour of the hexagon 39th
  • the abutment flange 41 already forms a good sealing possibility in addition to the usually self-sealing threaded portion 35 in the through hole 19, additional sealing measures, for example in the form of sealing rings or other liquid films or adhesive 43 may be provided.
  • This elastic seal in particular has the advantage of compensating for expansion of the fastening screw 23 due to different thermal expansions.
  • the fastening screw 23 consists essentially of metal
  • the holding element 13 consists essentially of plastic.
  • the different materials have different thermal expansion coefficients, so that the different expansions of the two materials elastic can be collected by the sealing means 43.
  • a liquid film or adhesive 45 between the underside 15 of the holding member 13 and the top of the roofing membrane is further punctiform, annular or partial ring-shaped. This advantageously does not extend inward to the passage region of the fastening screw, a random penetration of the liquid film 45 into this area is harmless, or is prevented in polystyrene by an additional sealing disc.
  • a dot, ring or partial ring of liquid foil or adhesive 45 is applied to the roofing sheet 5. This happens at the fixed point fixed, as will be described below. Subsequently, the holding element 13 is placed with its underside 15 on the liquid foil or the adhesive 45, wherein its passage opening 19 comes to lie substantially at the fixed fixing point.
  • the fastening screw is inserted through the passage opening 19, penetrates through the roofing membrane 5 and also through the thermal barrier coating 7 and film layer 9. Thereafter, the lower threaded portion 35 begins to screw into the support structure 11 by continuously rotating the fastening screw through the preferably self-tapping thread.
  • the holding element 13 may initially rotate slightly, whereby the liquid film or the adhesive 45 is distributed uniformly or evenly over the ring circumference.
  • the fastening screw 23 By the lower threaded portion 29, the fastening screw 23, however offset downwards so that the contact pressure is so great that the holding element 13 is no longer moving and the screw 23 is fully screwed with its upper threaded portion 35 in the through hole 19 until the abutment flange 41 on the top 14 of the support member 13 lie comes. If appropriate, it still encounters a seal, for example in the form of a liquid foil 43.
  • FIG. 2 schematically shows the top view of a roof surface D having a major surface area 51 extending over the central areas of the roof surface 50. Furthermore, indicated edge regions 52 which extend in a strip-shaped manner parallel to the outer sides of the roof surface 50 and corner regions 53 which extend in the corner regions of the roof surface 50.
  • the distribution of the fastening device 1 in the respective regions may for example be such that 1.2 pieces / m 2 are used in the main surface region 51, 2.4 2.4 / m 2 in the edge regions 52 and 3.8 / m in the corner regions 53 2 .
  • many fixing points are provided and, if appropriate, pre-marked in advance of the mounting of the fastening device 1.
  • the fastening device 1 of the present invention can be used in all areas of a film roof, so that logistically can also be avoided to provide different fastening devices for different roof areas, which in turn speeds up the mounting of the fastening devices.
  • a second embodiment of a holding element 13 is shown.
  • the passage opening 19 in its upper region has a widening 47 which is so large in its diameter that it can accommodate the head section of the fastening screw 23 with external hexagon 39 and abutment flange 41.
  • the depth of the widening 47 is such that the head portion of the fastening screw 23 can completely disappear in it and can for the complete sealing of the widening to the outside a liquid foil 49 poured into the widening 47 and this so be poured out.
  • the overall dimensioning of the retaining element 13 is adapted according to this embodiment.
  • a third embodiment of the device according to the invention is shown in the middle section 17, a funnel-shaped opening 55 is provided which serves to receive a countersunk head 57, which forms the upper end of the fastening screw 23.
  • the fastening screw has in the region of its upper end an inner recess 59 into which a suitable tool for screwing in or unscrewing the fastening screw 23 can engage.
  • the inner recess may be an inner square or hexagon.
  • the present invention thus provides a simple device for fastening a roofing membrane on a roof structure and a correspondingly simple method for fastening the roofing layer, which has particular advantages in terms of simplicity of design, ease of assembly and thus considerable cost advantages.
  • the fastening device according to the invention can advantageously be applied to all types of roofs. This also includes vertical or even overhanging roofs, such as barrel-shaped roofs. It also includes facades of buildings.
  • Another essential advantage of the present invention is the recyclability of the fastening device, in particular when the holding element is made of plastic.
  • the holding element is made of plastic.
  • the fastening screw has to be loosened again and the roof sealing layer in the area can be removed together with the retaining element 13.
  • the embodiment of the above-mentioned prior art in which the threaded sleeve is poured into the retaining plate, makes the recyclability of the retaining plate considerably harder or even completely prevented.
  • a geometry-adapted sealing disk can also be used, for example, of compressed foam material.
  • the fastening device according to the invention can be used in supporting substructures of all kinds, including in those in which instead of trapezoidal metal concrete, aerated concrete or wood materials are available.
  • the lower threaded portion 29 of the fastening screw 23 then has a suitable for the respective material of the roof substructure thread.

Abstract

The device (1) for fastening a roof sealing sheet (5) comprises a holding element (13) with an opening (19) for accommodation of the end section (33) of a fastening screw (23) provided with a hexagonal head (39). The diameter of the opening (19) is less than the outside diameter of the self-tapping thread (35) of the fastening screw. Also claimed is a method for fastening a roof sealing seat by means of such devices to a roof under-structure (3).

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Befestigen einer Dachabdichtungsbahn mittels eines Halteelements und eines Befestigungselements an einer Dachunterkonstruktion. Weiterhin betrifft die vorliegende Erfindung ein Verfahren zum Befestigen einer Dachabdichtungsbahn auf einer Dachunterkonstruktion.The present invention relates to a device for fastening a roofing membrane by means of a holding element and a fastening element to a roof substructure. Furthermore, the present invention relates to a method for fixing a roof waterproofing membrane on a roof substructure.

Bei Dachkonstruktionen aller Art werden heute vielfach Dachabdichtungsbahnen eingesetzt. Diese decken eine Wärmedämmschicht ab, unter der sich in der Regel wieder eine Dampfsperrschicht befindet. Dieser Aufbau wird dann von einer entsprechenden Tragstruktur des Daches getragen.In roof structures of all kinds roofing membranes are now often used. These cover a thermal barrier layer under which there is usually a vapor barrier layer again. This structure is then supported by a corresponding support structure of the roof.

Zur Festlegung der Dachabdichtungsbahn bzw. des gesamten Dachabdeckungsaufbaus aus den oben genannten verschiedenen Schichten, werden herkömmlicherweise scheibenförmige Halteelemente in Form von Haltetellern verwendet. Aus der DE 29 05 068 C2 ist beispielsweise eine Vorrichtung zum Befestigen einer Abdichtungsschicht an einer Unterlage bekannt, die einen Halteteller aufweist, der mit Hilfe einer Befestigungsschraube an der Tragstruktur des Daches befestigt wird. Hierzu weist der Halteteller für die Aufnahme der Befestigungsschraube eine entsprechende zur Dachhaut gerichtete Sacklochöffnung auf, in der sich eine Gewindehülse befindet und in die der Kopf der Befestigungsschraube eingeschraubt ist.To fix the roof waterproofing membrane or the entire roof covering structure of the above-mentioned different layers, disc-shaped holding elements in the form of holding plates are conventionally used. From DE 29 05 068 C2, for example, a device for fixing a sealing layer to a substrate is known which has a retaining plate which is fastened by means of a fastening screw to the supporting structure of the roof. For this purpose, the retaining plate for receiving the fastening screw on a corresponding directed to the roof skin blind hole opening in which there is a threaded sleeve and into which the head of the fastening screw is screwed.

Die Vorrichtung des Standes der Technik hat jedoch den Nachteil, daß die Ausgestaltung des Halteelements sehr aufwendig und teuer ist. Auch die eingesetzte Befestigungsschraube ist eine spezielle Schraube mit einem oberen bis zum Ende des Schraubenschaftes reichenden Gewindeabschnitt, der zudem in die Gewindehülse vormontiert werden muß. Gemäß DE 29 05 068 C2 ist zudem für das Aufbringen der Befestigungsvorrichtung eine speziell ausgebildete aufwendige Montagevorrichtung erforderlich.However, the device of the prior art has the disadvantage that the configuration of the holding element is very complicated and expensive. The fastening screw used is a special screw with an upper reaching to the end of the screw shaft threaded portion, which must also be pre-assembled in the threaded sleeve. According to DE 29 05 068 C2, a specially designed complex mounting device is also required for the application of the fastening device.

Zudem ist die exakte Lage der Befestigungsschraube von außen nicht sichtbar, so daß nicht erkennbar ist, ob der Halteteller mit der Befestigungsschraube die gewünschte Endlage erreicht hat, in der sowohl die Abdichtungsbahn an der Dachunterstruktur festliegt, als auch eine entsprechende Abdichtungswirkung erzielt, oder nicht.In addition, the exact position of the fastening screw from the outside is not visible, so that it is not apparent whether the retaining plate has reached the desired end position with the fastening screw, in which both the waterproofing membrane is fixed to the roof substructure, as well as achieves a corresponding sealing effect, or not.

Aus der US 4,959,938 ist eine Vorrichtung zum Befestigen einer Dachdichtungsbahn bekannt, mit einem an ihrer Unterseite im wesentlichen ebenen Halteelement, das einen eine deutlich größere Dicke aufweisenden Mittenabschnitt aufweist, und einem Befestigungselement, das die unter dem Halteelement liegende Abdichtungsbahn durchdringt und diese und das Halteelement an der Dachunterkonstruktion fixiert, wobei das Befestigungselement eine Befestigungsschraube ist, die an ihrem unteren Endbereich einen Gewindeabschnitt zum formschlüssigen Eingriff in die Dachunterkonstruktion aufweist und an ihrem oberen Endbereich einen Gewindeabschnitt zum formschlüssigen Eingriff mit dem Halteelement aufweist.From US 4,959,938 a device for fixing a roof waterproofing membrane is known, with a substantially flat on its underside retaining element having a significantly greater thickness center portion, and a fastening element which penetrates the underlying under the retaining element sealing sheet and these and the holding element fixed to the roof substructure, wherein the fastening element is a fastening screw, which has at its lower end portion a threaded portion for positive engagement in the roof substructure and at its upper end portion has a threaded portion for positive engagement with the retaining element.

Diesem Stand der Technik ist jedoch nachteilig, daß er nicht für ein Aufbringen auf eine, auf der Oberseite einer Wärmedämmschicht einer Flachdachkonstruktion aufgebrachten Dachabdichtungsbahn einsetzbar ist, da er diese Dachabdichtungsbahn aufgrund seiner geometrischen Ausgestaltung durchdringen würde und damit einen zur Witterungsseite dichten Abschluß des Dachaufbaus unmöglich macht.However, this prior art is disadvantageous in that it can not be used for application to a, applied to the top of a thermal insulation layer of a flat roof construction roofing membrane, since he would penetrate this roofing membrane due to its geometric configuration and thus makes a weather-tight seal of the roof structure impossible ,

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren zum Befestigen einer Dachabdichtungsbahn einer Dachunterkonstruktion zu schaffen, die einen äußerst einfachen Aufbau aufweist, eine sichere Abdichtung erzeugt und sehr einfach montiert werden kann.The present invention is therefore an object of the invention to provide a device and a method for securing a roof waterproofing membrane of a roof substructure, which has a very simple structure, creates a secure seal and can be mounted very easily.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 bzw. des Anspruchs 10 gelöst.This object is solved by the features of claim 1 and of claim 10.

Gemäß der vorliegenden Erfindung weist das Halteelement eine zentrale Durchgangsöffnung zur formschlüssigen Aufnahme des oberen Endbereichs der Befestigungsschraube und die Befestigungsschraube an dem oberen Endbereich eine Betätigungseinrichtung auf, die mittels eines geeigneten Werkzeugs betätigbar ist, wobei der Innendurchmesser der Durchgangsöffnung des Halteelements geringer ist als der Außendurchmesser des oberen Gewindeabschnitts der Befestigungsschraube und der obere Gewindeabschnitt ein selbstschneidendes Gewinde aufweist, wobei die Länge des oberen Gewindeabschnitts kürzer als die Länge der zentralen Durchgangsöffnung ist.According to the present invention, the holding member has a central through hole for positively receiving the upper end portion of the fixing screw and the fixing screw at the upper end portion Actuator, which is actuated by means of a suitable tool, wherein the inner diameter of the through hole of the holding member is smaller than the outer diameter of the upper threaded portion of the fastening screw and the upper threaded portion has a self-tapping thread, wherein the length of the upper threaded portion is shorter than the length of the central passage opening is.

Dadurch wird vorteilhafter Weise erreicht, daß die erfindungsgemäße Vorrichtung zum Befestigen einer Dachabdichtungsbahn, die lediglich aus zwei Elementen gebildet ist, von denen eines, nämlich das Halteelement, einfach hergestellt werden kann und das andere, nämlich die Befestigungsschraube ein im Handel übliches Standardelement sein kann, besonders einfach und wirksam auf die Dachabdichtungsbahn aufgebracht werden kann. Die erfindungsgemäße Vorrichtung ist somit besonders einfach und aus besonders kostengünstig herzustellenden bzw. erhältlichen Elementen zusammengesetzt. Insbesondere wird auch sichergestellt, daß der Gewindeabschnitt die Durchtrittsöffnung der Dachabdichtungsbahn nicht unnötig vergrößert bzw. wird eine definierte Anlagefläche am Schaft der Schraube in einem Bereich erreicht, in dem sich kein Gewinde befindet, was zur Erhöhung der Dichtheit der Vorichtung gegenüber äußeren Witterungseinflüssen führt.This advantageously achieves that the device according to the invention for fixing a roof sealing strip, which is formed only of two elements, one of which, namely the holding element, can be easily manufactured and the other, namely the fastening screw can be a standard standard element in the trade, Particularly simple and effective can be applied to the roof waterproofing membrane. The device according to the invention is therefore particularly simple and composed of elements which can be produced or obtained particularly inexpensively. In particular, it is also ensured that the threaded portion does not unnecessarily increase the passage opening of the roofing membrane or a defined contact surface is reached on the shank of the screw in a region in which there is no thread, which leads to increase the tightness of Vorichtung against external weather influences.

Vorzugsweise ist die Betätigungseinrichtung in Form eines Außensechskants ausgebildet und zwischen dem Außensechskant und dem oberen Gewindeabschnitt der Befestigungsschraube ist ein ringförmiger Anlageflansch vorgesehen, durch den eine äußerst gleichmäßige Kraftübertragung einerseits und eine erhöhte Dichtwirkung andererseits erzielt wird.Preferably, the actuating device is designed in the form of an external hexagon, and an annular abutment flange is provided between the external hexagon and the upper threaded portion of the fastening screw, by means of which an extremely uniform force transmission on the one hand and an increased sealing effect on the other hand are achieved.

Alternativ kann die Betätigungseinrichtung in Form eines Schrauben-Senkkopfes ausgebildet sein, der in einen komplementären Abschnitt im Halteelement einschraubbar ist. Damit wird vorteilhafterweise erreicht, daß die Befestigungsschraube das Halteelement nicht überragt.Alternatively, the actuating device may be in the form of a countersunk screw head which can be screwed into a complementary section in the retaining element. This is advantageously achieved that the fastening screw does not project beyond the retaining element.

Weist der Senkkopf einen Schlitz oder eine innenausnehmung, wie einen Vier- oder Sechskant auf, so kann die Befestigungsschraube auf einfache Weise eingeschraubt und wieder gelöst werden.If the countersunk head has a slot or an internal recess, such as a hexagon or hexagon, the fastening screw can be screwed in and released in a simple manner.

Auch kann vorteilhafterweise die die Betätigungseinrichtung in Form eines Kopfes ausgebildet sein, der eine im wesentlichen flache Oberfläche und einen zwischen Schraubenschaft und flacher Oberfläche mit Einkerbungen versehenen Ring aufweist.Also advantageously, the actuating means may be in the form of a head having a substantially flat surface and a ring provided with notches between a screw shank and a flat surface.

Weiterhin ist vorteilhafterweise die Oberseite des Mittenabschnitts des Halteelements abgeflacht, wodurch vorteilhafterweise eine flächige Anlage des Kopfabschnitts der Befestigungsschraube auf dem Halteelement erzielt wird. Damit wird vorteilhafterweise auch die Möglichkeit geschaffen, gegebenenfalls zusätzliche Dichtungseinrichtungen, beispielsweise in Form von Flüssigfolie, Klebstoff oder Dichtscheibe einzubringen.Furthermore, the upper side of the middle section of the retaining element is advantageously flattened, which advantageously achieves a planar contact of the head section of the fastening screw on the retaining element. This advantageously also creates the possibility of optionally introducing additional sealing devices, for example in the form of liquid foil, adhesive or sealing disc.

In einer vorteilhaften weiteren Ausführungsform der erfindungsgemäßen Vorrichtung ist die Durchgangsöffnung des Halteelements von der Oberseite her aufgeweitet, derart, daß der Kopfabschnitt der Befestigungsschraube teilweise oder bevorzugt ganz in der Aufweitung aufgenommen ist. Dadurch wird insbesondere der Vorteil erreicht, daß der Kopfabschnitt der Befestigungsschraube nicht über das Halteelement hinaus hervorsteht und somit eine Erhöhung der Sicherheit gegenüber möglichen Unfällen bewirkt.In an advantageous further embodiment of the device according to the invention, the passage opening of the holding element is widened from the upper side, such that the head section of the fastening screw is partially or preferably completely accommodated in the widening. As a result, in particular the advantage is achieved that the head portion of the fastening screw does not protrude beyond the retaining element and thus causes an increase in safety against possible accidents.

Vorteilhafterweise kann die Aufweitung mit Dichtungsmaterial ausgegossen sein, was deren sichere Abdichtung gegen Eindringen von Witterungseinflüssen wie insbesondere Regenwasser, sicherstellt. Zusätzlich wird dabei ein Korrosionsschutz der Befestigungsschraube geschaffen.Advantageously, the expansion can be filled with sealing material, which ensures their secure seal against the ingress of weather influences, in particular rainwater. In addition, a corrosion protection of the fastening screw is created.

Vorteilhafterweise kann auch alternativ eine Dichtungskappe in die Aufweitung eingebracht werden, beispielsweise aufgeklemmt oder eingeschraubt, so daß eine sichere Abdichtung über lange Zeit hervorragend gewährleistet ist.Advantageously, alternatively, a sealing cap can be introduced into the expansion, for example, clamped or screwed, so that a secure seal over a long time is excellent guaranteed.

Die Möglichkeit des Aufbringens von Zusatzelementen in die Aufweitung kann zu dem besonderen Vorteil führen, daß das Dichtungselement zusätzliche Halteelemente aufweist, beispielsweise Sicherungselemente für Dachfangeinrichtungen, insbesondere bei der Verwendung der Befestigungsvorrichtung nicht nur auf flachen sondern auch auf geneigten Dächern.The possibility of applying additional elements in the expansion can lead to the particular advantage that the sealing element has additional holding elements, such as securing elements for roof catching devices, especially when using the fastening device not only on flat but also on sloping roofs.

Die vorliegende Erfindung umfaßt auch ein Verfahren zum Befestigen einer Dachabdichtungsbahn oder dergleichen auf einer Dachunterkonstruktion, wobei es erfindungsgemäß die folgenden Schritte aufweist:

  • Aufbringen eines Punktes, Ringes oder Teilringes von Flüssigfolie oder Kleber auf die Dachabdichtungsbahn um den vorbestimmten Fixierpunkt herum,
  • Auflegen eines an seiner Unterseite im wesentlichen ebenen Halteelements, das einen eine deutlich größere Dicke aufweisenden Mittenabschnitt aufweist, in dem sich eine Durchgangsöffnung befindet,
  • Einsetzen einer Befestigungsschraube in die Durchgangsöffnung und Einschrauben der Befestigungsschraube derart, daß zunächst ein einen Gewindeabschnitt aufweisender unterer Endbereich der Befestigungsschraube durch die Dachabdichtungsbahn hindurch in die Dachunterkonstruktion eindringt, um sich in das vorgesehene Dachelement einzuschrauben, und anschließend ein einen selbstschneidenden Gewindeabschnitt aufweisender oberer Endbereich sich in die Durchgangsöffnung des Halteelements einschraubt, solange, bis durch den sich anliegenden Kopfabschnitt der Befestigungsschraube, dessen Außendurchmesser größer ist als der Innendurchmesser der Durchgangsöffnung des Halteelements, eine ausreichend große Anpresskraft des Halteelements gegen die Dachunterkonstruktion eingestellt hat.
The present invention also includes a method of attaching a roofing membrane or the like to a roof substructure, comprising, according to the invention, the following steps:
  • Applying a point, ring or partial ring of liquid foil or adhesive to the roofing membrane around the predetermined fixation point,
  • Placing a retaining element which is essentially flat on its underside and which has a center section which has a significantly greater thickness and in which there is a passage opening,
  • Inserting a fastening screw into the through hole and screwing the fastening screw such that first penetrates a threaded portion having a lower end portion of the fastening screw through the roof sealing strip into the roof substructure to screw into the roof element provided, and then a self-tapping threaded portion having upper end portion in screwed through the passage opening of the retaining element, as long as, set by the adjacent head portion of the fastening screw whose outer diameter is greater than the inner diameter of the passage opening of the retaining element, a sufficiently large contact pressure of the retaining element against the roof substructure.

Damit wird vorteilhafter Weise eine äußerst einfache Montage, unter Verwirklichung einer sicheren Abdichtung der Dachaußenhaut, nach außen erreicht, wobei, insbesondere bei Ausbildung des Halteelements als Halteteller, eine exakte Endpositionierung bzw. Ausrichtung des Halteelements zur Erzielung seiner Funktion nicht mehr erforderlich ist. Mit anderen Worten, der Halteteller, der sich beim Aufbringen zumindest teilweise mitdreht, kann eine beliebige Endmontagestellung einnehmen und bildet in dieser Endmontagestellung eine sichere Abdichtung, wie sie beim bisherigen Stand der Technik nur durch aufwendige Maßnahmen sowohl konstruktiver Art als auch montage-technischer Art erreichbar ist.Thus, an extremely simple assembly, achieving a secure sealing of the outer roof skin, is achieved to the outside, wherein, especially when forming the retaining element as a holding plate, an exact final positioning or alignment of the holding element to achieve its function is no longer required. In other words, the retaining plate, which at least partially rotates when applied, can take any final assembly position and forms in this final assembly position a secure seal, as in the prior art only by consuming measures both constructive and assembly-technical type achievable is.

Weiterhin ergibt sich der große Vorteil, daß die erfindungsgemäße Befestigungsvorrichtung automatengerecht ist, also mit bereits existierenden Aufbring- und Einschraubautomaten auf das Dach aufgebracht werden kann.Furthermore, there is the great advantage that the fastening device according to the invention is vending machine, so it can be applied to existing already existing application and screwing on the roof.

Mit besonderem Vorteil ergibt sich dadurch, daß durch den Eingriff des oberen Endbereichs der Befestigungsschraube das Halteelement mitgedreht wird, bei Berührung der Flüssigfolie oder des Klebers, diese im wesentlichen zumindest ringförmig gleichmäßig in Umfangssrichtung verteilt wird, so daß damit eine sichere Abdichtung der Trennfläche zwischen Halteelement und Dachabdichtungsbahn gewährleistet ist.With particular advantage results from the fact that is rotated by the engagement of the upper end portion of the fastening screw, the holding element, upon contact with the liquid film or adhesive, this is substantially evenly distributed evenly in the circumferential direction, so that thus a secure sealing of the interface between the holding element and roof waterproofing membrane is guaranteed.

Vorteilhafterweise wird insbesondere bei einer Dachdämmung aus Polystyrol eine Gummi- oder Silikonscheibe zwischen Halteelement und Dachabdichtungsbahn eingesetzt, wodurch eine dem Dämmaterial angepaßte gute Abdichtung erreicht wird.Advantageously, in particular in a roof insulation made of polystyrene, a rubber or silicone disc between the holding element and roof waterproofing membrane is used, whereby a damping material adapted to the insulating material is achieved.

Weitere Einzelheiten, Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die beigefügten Zeichnungen. Darin zeigt:

Fig. 1
einen Schnitt durch eine montierte Befestigungsvorrichtung in einer ersten Ausführungsform dieser Vorrichtung;
Fig. 2
eine schematische Darstellung unterschiedlicher Verteilungszonen der erfindungsgemäßen Befestigungsvorrichtung auf einem im Beispielsfalle dargestellten Flachdach;
Fig. 3
eine zweite Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung in Schnittansicht;
Fig. 4
eine dritte Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung in Schnittansicht; und
Fig. 5
eine vierte Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung in Schnittansicht;
Further details, features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings. It shows:
Fig. 1
a section through a mounted fastening device in a first embodiment of this device;
Fig. 2
a schematic representation of different distribution zones of the fastening device according to the invention on a flat roof shown in the exemplary case;
Fig. 3
a second embodiment of the fastening device according to the invention in sectional view;
Fig. 4
a third embodiment of the fastening device according to the invention in sectional view; and
Fig. 5
A fourth embodiment of the fastening device according to the invention in sectional view;

In der nachfolgenden detaillierten Beschreibung von Ausführungsbeispielen werden gleiche Teile mit den gleichen Bezugsziffern bezeichnet.In the following detailed description of embodiments, like parts are designated by the same reference numerals.

In Fig. 1 ist eine erfindungsgemäße Befestigungsvorrichtung 1 in Schnittdarstellung dargestellt. Die Befestigungsvorrichtung 1 dient zur Befestigung einer Dachabdichtungsbahn 5 einer Dachunterkonstruktion 3, wobei die Dachabdichtungsbahn 5 in bekannter Weise eine Kunststoffolienschicht, eine Bitumenbahn oder auch eine unkaschierte oder kaschierte Blechbahn sein kann.In Fig. 1, a fastening device 1 according to the invention is shown in sectional view. The fastening device 1 is used for fastening a roofing membrane 5 of a roof substructure 3, wherein the roofing membrane 5 may be in a known manner a plastic film layer, a bituminous sheet or a non-laminated or laminated metal sheet.

Unterhalb der Dachabdichtungsbahn 5 befindet sich eine Wärmedämmschicht 7, beispielsweise aus geeignetem Wärmedämmaterial, worunter sich wiederum eine Folienschicht 9 befindet, die beispielsweise als Dampfsperre dient.Below the roof sealing sheet 5 is a thermal barrier coating 7, for example, from suitable thermal insulation material, of which in turn is a film layer 9, which serves for example as a vapor barrier.

Die Dachabdichtungsbahn 5, die Wärmedämmschicht 7 und die Foliensschicht 9 ruhen auf einer Tragstruktur 11 des Daches.The roofing membrane 5, the thermal barrier coating 7 and the film layer 9 rest on a supporting structure 11 of the roof.

Zur Festlegung der Dachabdichtungsbahn 5 einerseits und der darunter liegenden Schichten 7 und 9 andererseits an der Tragstruktur 11 ist die Befestigungsvorrichtung 1 vorgesehen. Diese weist ein Halteelement 13 auf, das im dargestellten Beispielsfall tellerförmig ausgebildet ist und dessen Unterseite 15 im wesentlichen eben ausgebildet ist.Laying down the roofing membrane 5 on the one hand and the underlying layers 7 and 9 on the other hand on the support structure 11, the fastening device 1 is provided. This has a holding element 13, which is dish-shaped in the illustrated example and whose bottom 15 is formed substantially flat.

Das Halteelement 13 weist einen Mittenabschnitt 17 auf, der eine erheblich größere Dicke aufweist als die Dicke des restlichen Halteelements 13.The holding element 13 has a center section 17 which has a considerably greater thickness than the thickness of the remaining holding element 13.

Zentral in diesem Mittenabschnitt 17 befindet sich eine Durchgangsöffnung 19, die sich von der Oberseite 14 des Halteelements 13 zu dessen Unterseite 15 erstreckt.Centrally located in this middle section 17 is a passage opening 19, which extends from the upper side 14 of the holding element 13 to its underside 15.

In Fig. 1 ist die Befestigungsvorrichtung im montierten Zustand dargestellt. Zur Festlegung des Halteelements 13 ist ein Befestigungselement 21 vorgesehen, das im dargestellten Beispielsfalle eine herkömmliche Befestigungsschraube 23 ist. Die Befestigungsschraube 23 weist einen unteren Endbereich 25 auf, der eine Spitze 27 und einen Gewindeabschnitt 29 aufweist. Der Gewindeabschnitt 29 ist als selbstschneidendes Gewinde ausgebildet, das beim Einschrauben der Befestigungsschraube 23 in Eingriff kommt mit der Tragstruktur 11.In Fig. 1, the fastening device is shown in the assembled state. To fix the retaining element 13, a fastening element 21 is provided, which in the example shown is a conventional fastening screw 23. The Fixing screw 23 has a lower end portion 25 which has a tip 27 and a threaded portion 29. The threaded portion 29 is formed as a self-tapping thread which engages when screwing the fastening screw 23 with the support structure eleventh

Im oberen Endbereich 33 der Befestigungsschraube 23 bzw. an dessen Schaft 31 ist ein Gewindeabschnitt 35 vorgesehen, der ein Außengewinde aufweist, dessen Außendurchmesser größer ist als der Innendurchmesser der Durchgangsöffnung 19. Zudem ist der Gewindeabschnitt 35 als selbstschneidendes Gewinde ausgebildet, das sich während des Einschraubens der Befestigungsschraube 23 selbst in die Innenwandung der Durchgangsöffnung 19 einschneidet.In the upper end portion 33 of the fastening screw 23 and on the shaft 31, a threaded portion 35 is provided which has an external thread, the outer diameter is greater than the inner diameter of the through hole 19. In addition, the threaded portion 35 is formed as a self-tapping thread, which during screwing the fastening screw 23 itself cuts into the inner wall of the passage opening 19.

Wie aus Fig. 1 weiterhin ersichtlich, ist die Länge des Gewindeabschnitts 35 geringer als die Länge der Durchgangsöffnung 19, so daß der Gewindeabschnitt 35 nicht in die Dachabdichtungsbahn 5 eindringt.As further shown in FIG. 1, the length of the threaded portion 35 is less than the length of the through hole 19, so that the threaded portion 35 does not penetrate into the roof sealing sheet 5.

Der obere Endbereich 33 der Befestigungsschraube 23 weist weiterhin eine Betätigungseinrichtung 37 auf, die im dargestellten Beispielsfalle als Außensechskant 39 ausgebildet ist.The upper end region 33 of the fastening screw 23 furthermore has an actuating device 37, which in the example shown is designed as an external hexagon 39.

Zwischen dem Außensechskant 39 und dem Gewindeabschnitt 35 befindet sich vorzugsweise ein Anlageflansch 41, dessen Außendurchmesser, wie aus Fig. 1 ersichtlich, etwas größer ist als die Außenkontur des Außensechskants 39.Between the external hexagon 39 and the threaded portion 35 is preferably a contact flange 41, the outer diameter, as shown in FIG. 1, is slightly larger than the outer contour of the hexagon 39th

Obwohl der Anlageflansch 41 bereits eine gute Abdichtungsmöglichkeit zusätzlich zu dem in der Regel selbst dichtenden Gewindeabschnitt 35 in der Durchgangsöffnung 19 bildet, können zusätzliche Dichtungsmaßnahmen, beispielsweise in Form von Dichtringen oder weiterer Flüssigfolien oder Kleber 43 vorgesehen sein. Diese elastische Dichtung hat insbesondere den Vorteil der Kompensation von Ausdehnung der Befestigungsschraube 23 aufgrund von unterschiedlichen Wärmeausdehnungen. Denn die Befestigungsschraube 23 besteht im wesentlichen aus Metall, wohingegen das Halteelement 13 im wesentlichen aus Kunststoff besteht. Die unterschiedlichen Materialien haben unterschiedliche Wärmeausdehnungskoeffizienten, so daß die unterschiedlichen Ausdehnungen der beiden Materialien elastisch durch die Dichtungseinrichtungen 43 aufgefangen werden können.Although the abutment flange 41 already forms a good sealing possibility in addition to the usually self-sealing threaded portion 35 in the through hole 19, additional sealing measures, for example in the form of sealing rings or other liquid films or adhesive 43 may be provided. This elastic seal in particular has the advantage of compensating for expansion of the fastening screw 23 due to different thermal expansions. For the fastening screw 23 consists essentially of metal, whereas the holding element 13 consists essentially of plastic. The different materials have different thermal expansion coefficients, so that the different expansions of the two materials elastic can be collected by the sealing means 43.

Im montierten Zustand der Befestigungsvorrichtung 1 ist weiterhin punktförmig, ringförmig oder teilringförmig eine Flüssigfolie oder ein Kleber 45 zwischen Unterseite 15 des Halteelements 13 und Oberseite der Dachabdichtungsbahn vorgesehen. Diese erstreckt sich vorteilhafterweise nach innen nicht bis zum Durchgangsbereich der Befestigungsschraube, ein zufälliges Eindringen der Flüssigfolie 45 bis in diesen Bereich ist jedoch unschädlich, bzw. wird bei Polystyrol durch eine zusätzlich Dichtscheibe verhindert.In the mounted state of the fastening device 1, a liquid film or adhesive 45 between the underside 15 of the holding member 13 and the top of the roofing membrane is further punctiform, annular or partial ring-shaped. This advantageously does not extend inward to the passage region of the fastening screw, a random penetration of the liquid film 45 into this area is harmless, or is prevented in polystyrene by an additional sealing disc.

Nachfolgend wird nunmehr das erfindungsgemäße Verfahren zum Befestigen einer Dachabdichtungsbahn beschrieben.The method according to the invention for fastening a roofing membrane will now be described below.

Zunächst wird ein Punkt, Ring oder Teilring von Flüssigfolie oder Kleber 45 auf die Dachabdichtungsbahn 5 aufgetragen. Dies geschieht um den festgelegten Fixierpunkt, wie er nachfolgend noch beschrieben wird. Anschließend wird das Halteelement 13 mit seiner Unterseite 15 auf die Flüssigfolie oder den Kleber 45 aufgelegt, wobei dessen Durchgangsöffnung 19 im wesentlichen auf den festgelegten Fixierpunkt zu liegen kommt.First, a dot, ring or partial ring of liquid foil or adhesive 45 is applied to the roofing sheet 5. This happens at the fixed point fixed, as will be described below. Subsequently, the holding element 13 is placed with its underside 15 on the liquid foil or the adhesive 45, wherein its passage opening 19 comes to lie substantially at the fixed fixing point.

Anschließend wird die Befestigungsschraube durch die Durchgangsöffnung 19 eingeführt, dringt durch die Dachabdichtungsbahn 5 hindurch und auch durch die Wärmedämmschicht 7 sowie Folienschicht 9. Danach beginnt sich der untere Gewindeabschnitt 35 in die Tragstruktur 11 durch fortwährendes Drehen der Befestigungsschraube durch das vorzugsweise selbstschneidende Gewinde einzuschrauben.Subsequently, the fastening screw is inserted through the passage opening 19, penetrates through the roofing membrane 5 and also through the thermal barrier coating 7 and film layer 9. Thereafter, the lower threaded portion 35 begins to screw into the support structure 11 by continuously rotating the fastening screw through the preferably self-tapping thread.

Wenn der obere Gewindeabschnitt 35 die Oberseite 14 des Halteelements 13 bzw. der Durchgangsöffnung 19 erreicht, beginnt er sich ebenfalls in die Durchgangsöffnung 19 zu schrauben. Dabei kann sich das Halteelement 13 zunächst etwas mitdrehen, wodurch die Flüssigfolie oder der Kleber 45 gleichmäßig oder gleichmäßiger über den Ring-Umfang verteilt wird.When the upper threaded portion 35 reaches the top 14 of the holding member 13 and the through hole 19, it also starts to screw into the through hole 19. In this case, the holding element 13 may initially rotate slightly, whereby the liquid film or the adhesive 45 is distributed uniformly or evenly over the ring circumference.

Durch den unteren Gewindeabschnitt 29 wird die Befestigungsschraube 23 jedoch insgesamt nach unten versetzt, so daß der Anpressdruck so groß wird, daß das Halteelement 13 sich nicht mehr bewegt und die Schraube 23 vollständig mit ihrem oberen Gewindeabschnitt 35 in die Durchgangsöffnung 19 eingeschraubt wird, bis der Anlageflansch 41 auf der Oberseite 14 des Halteelements 13 zu liegen kommt. Gegebenenfalls trifft er noch auf eine Dichtung, beispielsweise in Form einer Flüssigfolie 43.By the lower threaded portion 29, the fastening screw 23, however offset downwards so that the contact pressure is so great that the holding element 13 is no longer moving and the screw 23 is fully screwed with its upper threaded portion 35 in the through hole 19 until the abutment flange 41 on the top 14 of the support member 13 lie comes. If appropriate, it still encounters a seal, for example in the form of a liquid foil 43.

In Fig. 2 ist beispielhaft die Verteilung von Befestigungsvorrichtungen auf einem Dach dargestellt. Fig. 2 zeigt schematisch die Draufsicht auf eine Dachfläche D, die einen Hauptflächenbereich 51 aufweist, der sich über die zentralen Bereiche der Dachfläche 50 erstreckt. Weiterhin sind angegeben Randbereiche 52, die sich parallel zu den Außenseiten der Dachfläche 50 streifenförmig erstrecken und Eckenbereiche 53, die sich in den Eckenbereichen der Dachfläche 50 erstrecken.In Fig. 2, the distribution of fastening devices is shown on a roof by way of example. FIG. 2 schematically shows the top view of a roof surface D having a major surface area 51 extending over the central areas of the roof surface 50. Furthermore, indicated edge regions 52 which extend in a strip-shaped manner parallel to the outer sides of the roof surface 50 and corner regions 53 which extend in the corner regions of the roof surface 50.

Die Verteilung der Befestigungsvorrichtung 1 in den jeweiligen Bereichen kann beispielsweise so sein, daß im Hauptflächenbereich 51 1,2 Stück/m2 eingesetzt werden, in den Randbereichen 52 2,4 Stück/m2 und in den Eckenbereichen 53 3,8 Stück/m2. Entsprechend viele Fixierungspunkte werden vorgesehen und vorab der Montage der Befestigungsvorrichtung 1 gegebenenfalls vormarkiert.The distribution of the fastening device 1 in the respective regions may for example be such that 1.2 pieces / m 2 are used in the main surface region 51, 2.4 2.4 / m 2 in the edge regions 52 and 3.8 / m in the corner regions 53 2 . Correspondingly many fixing points are provided and, if appropriate, pre-marked in advance of the mounting of the fastening device 1.

Die Befestigungsvorrichtung 1 der vorliegenden Erfindung ist in allen Bereichen eines Foliendaches einsetzbar, so daß logistisch auch vermieden werden kann, unterschiedliche Befestigungsvorrichtungen für unterschiedliche Dachflächenbereiche vorzusehen, was wiederum das Montieren der Befestigungsvorrichtungen beschleunigt.The fastening device 1 of the present invention can be used in all areas of a film roof, so that logistically can also be avoided to provide different fastening devices for different roof areas, which in turn speeds up the mounting of the fastening devices.

In Fig. 3 ist eine zweite Ausführungsform eines Halteelements 13 dargestellt. Im Gegensatz zur Ausführungsform gemäß Fig. 1 weist die Durchgangsöffnung 19 in ihrem oberen Bereich eine Aufweitung 47 auf, die in ihrem Durchmesser so groß ist, daß sie den Kopfabschnitt der Befestigungsschraube 23 mit Außensechskant 39 und Anlageflansch 41 mit aufnehmen kann. Weiterhin ist die Tiefe der Aufweitung 47 derart, daß der Kopfabschnitt der Befestigungsschraube 23 in ihr vollständig verschwinden kann und kann zur vollständigen Abdichtung der Aufweitung nach außen eine Flüssigfolie 49 in die Aufweitung 47 eingegossen und diese damit ausgegossen werden. Die Gesamtdimensionierung des Halteelements 13 wird dieser Ausführungsform entsprechend angepaßt.In Fig. 3, a second embodiment of a holding element 13 is shown. In contrast to the embodiment according to FIG. 1, the passage opening 19 in its upper region has a widening 47 which is so large in its diameter that it can accommodate the head section of the fastening screw 23 with external hexagon 39 and abutment flange 41. Furthermore, the depth of the widening 47 is such that the head portion of the fastening screw 23 can completely disappear in it and can for the complete sealing of the widening to the outside a liquid foil 49 poured into the widening 47 and this so be poured out. The overall dimensioning of the retaining element 13 is adapted according to this embodiment.

In Fig. 4 ist eine dritte Ausführungsform der erfindungsgemäßen Vorrichtung dargestellt. Im Mittenabschnitt 17 ist eine trichterförmige Öffnung 55 vorgesehen, die zur Aufnahme eines Senkkopfes 57 dient, der das obere Ende der Befestigungsschraube 23 bildet. Die Befestigungsschraube weist im Bereich ihres oberen Endes eine Innenausnehmung 59 auf, in die ein geeignetes Werkzeug zum Ein- bzw. Ausschrauben der Befestigungsschraube 23 eingreifen kann. So kann die Innenausnehmung beispielsweise ein Innenvierkant oder -sechskant sein.4, a third embodiment of the device according to the invention is shown. In the middle section 17, a funnel-shaped opening 55 is provided which serves to receive a countersunk head 57, which forms the upper end of the fastening screw 23. The fastening screw has in the region of its upper end an inner recess 59 into which a suitable tool for screwing in or unscrewing the fastening screw 23 can engage. For example, the inner recess may be an inner square or hexagon.

Fig. 5 zeigt eine vierte Ausführungsform der erfindungsgemäßen Vorrichtung 1. Sie unterscheidet sich von der Ausführungsform von Fig. 4 lediglich dadurch, daß anstelle der Innenausnehmung 59 ein Schlitz 61 im Schraubenkopf 57 der Befestigungsschraube 23 vorgesehen ist.It differs from the embodiment of Fig. 4 only in that instead of the inner recess 59, a slot 61 in the screw head 57 of the fastening screw 23 is provided.

Um eine exakte bzw. einwandfreie Montage der erfindungsgemäßen Vorrichtung sicherzustellen, können Maßnahmen ergriffen werden, die Verhindern, daß die Befestigungsschraube zu fest oder zu weit eingeschraubt wird. So kann das Einschrauben und/oder das Anziehen der Befestigungsschraube mittels eines Drehmomentschlüssels erfolgen. Auch kann eine im Stand der Technik bekannte Tiefenbegrenzung zum Einsatz kommen.In order to ensure an accurate or proper installation of the device according to the invention, measures can be taken to prevent the fastening screw being screwed in too tightly or too far. Thus, the screwing and / or tightening the fastening screw can be done by means of a torque wrench. Also, a known in the prior art depth limitation can be used.

Mit der vorliegenden Erfindung wird somit eine einfache Vorrichtung zum Befestigen einer Dachabdichtungsbahn auf einem Dachaufbau und ein entsprechend einfaches Verfahren zum Befestigen der Dachabdichtungsschicht angegeben, das insbesondere Vorteile hinsichtlich Einfachheit in der Ausgestaltung, Einfachheit in der Montage und damit erhebliche Kostenvorteile hat.The present invention thus provides a simple device for fastening a roofing membrane on a roof structure and a correspondingly simple method for fastening the roofing layer, which has particular advantages in terms of simplicity of design, ease of assembly and thus considerable cost advantages.

Die erfindungsgemäße Befestigungsvorrichtung kann vorteilhafterweise auf alle Arten von Dächern aufgebracht werden. Dies schließt auch senkrechte oder gar überhängende Dächer, beispielsweise tonnenförmige Dächer ein. Dabei sind auch Fassaden von Gebäuden mit eingeschlossen.The fastening device according to the invention can advantageously be applied to all types of roofs. This also includes vertical or even overhanging roofs, such as barrel-shaped roofs. It also includes facades of buildings.

Ein weiterer wesentlicher Vorteil der vorliegenden Erfindung ist auch die Recyclefähigkeit der Befestigungsvorrichtung, insbesondere wenn das Halteelement aus Kunststoff gebildet ist. Beispielsweise muß im Falle von der Ausgestaltung gemäß Figur 1 nur die Befestigungsschraube wieder gelöst werden und kann die Dachabdichtungsschicht in dem Bereich zusammen mit dem Halteelement 13 entfernt werden. Die Ausführungsform des eingangs erwähnten Standes der Technik, bei der die Gewindehülse in den Halteteller mit eingegossen ist, erschwert die Recyclefähigkeit des Haltetellers erheblich oder verhindert sie gar gänzlich.Another essential advantage of the present invention is the recyclability of the fastening device, in particular when the holding element is made of plastic. For example, in the case of the embodiment according to FIG. 1, only the fastening screw has to be loosened again and the roof sealing layer in the area can be removed together with the retaining element 13. The embodiment of the above-mentioned prior art, in which the threaded sleeve is poured into the retaining plate, makes the recyclability of the retaining plate considerably harder or even completely prevented.

Die vorliegende Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt. So kann zum Beispiel anstelle von Flüssigfolie, Kleber oder Dichtungsmasse auch eine der Geometrie angepaßte Dichtungsscheibe beispielsweise aus komprimiertem Schaummaterial verwendet werden.The present invention is not limited to the illustrated embodiments. Thus, for example, instead of liquid film, adhesive or sealant, a geometry-adapted sealing disk can also be used, for example, of compressed foam material.

Weiterhin kann die erfindungsgemäße Befestigungsvorrichtung bei Tragunterkonstruktionen aller Art verwendet werden, also auch bei solchen bei denen anstelle von Trapezblechen Beton, Porenbeton oder Holzwerkstoffe vorhanden sind. Der untere Gewindeabschnitt 29 der Befestigungsschraube 23 weist dann ein für den jeweiligen Werkstoff der Dachunterkonstruktion geeignetes Gewinde auf.Furthermore, the fastening device according to the invention can be used in supporting substructures of all kinds, including in those in which instead of trapezoidal metal concrete, aerated concrete or wood materials are available. The lower threaded portion 29 of the fastening screw 23 then has a suitable for the respective material of the roof substructure thread.

Claims (12)

  1. Device (1) for fastening a length of waterproof roof sheeting (5), with a holding element (13), having a central section (17) of considerably greater thickness, and a fastening element (21) which can penetrate the length of waterproof sheeting (5) located under the holding element (13) and fasten it and the holding element to the roof substructure (3, 11), the fastening element (21) being a fastening screw (23) which has on its lower end region (25) a threaded section (29) for interlocking engagement in the roof substructure (11) and on its upper end region (33) a threaded section (35) for interlocking engagement with the holding element (13), the holding element (13) having a central through orifice (19) for interlocking accommodation of the upper end region (33) of the fastening screw (23) and the fastening screw (23) having on its upper end region (33) an actuating device (37) which is actuatable by means of a suitable tool, the inner diameter of the through orifice (19) of the holding element (13) being smaller than the outer diameter of the upper threaded section (35) of the fastening screw (33) and the upper threaded section (35) having a self-cutting thread, characterised in that the holding element (13) is substantially flat at the bottom (15) and the length of the upper threaded section (35) is shorter than the length of the central through orifice (19).
  2. Device according to claim 1, characterised in that the actuating device (37) is constructed in the form of an outer hexagon (39) and an annular contact flange (41) is provided between the outer hexagon (39) and the upper threaded section (35) of the fastening screw (23).
  3. Device according to claim 1, characterised in that the actuating device (37) is constructed in the form of a countersunk screw head (57), which can be screwed into a complementary section (55) in the holding element (13).
  4. Device according to claim 3, characterised in that the countersunk screw head (57) has a slit (61) or an inner recess (59), so that the countersunk screw head can be screwed in and unscrewed by an appropriate tool.
  5. Device according to claim 1, characterised in that the actuating device (37) is constructed in the form of a head which has a substantially flat surface and a ring provided with notches between the screw shank (31) and the flat surface.
  6. Device according to one of claims 1 to 5, characterised in that the top (14) of the central section (17) of the holding element (13) is flattened.
  7. Device according to one of claims 1 to 4, characterised in that the through orifice (19) of the holding element (13) is widened from the top (14) to accommodate the actuating device (37) of the fastening screw (23).
  8. Device according to claim 7, characterised in that the widened area (47) is filled with liquid film or adhesive or jointing compound (49) after the fastening screw (23) has been inserted.
  9. Device according to claim 7, characterised in that the fastening screw has a sealing cap which is clamped or screwed into the widened area (47).
  10. Method for fastening a length of waterproof roof sheeting (5) on a roof substructure (3), with the following steps:
    - applying a dot, ring or partial ring of liquid film or adhesive (45) to the length of waterproof roof sheeting (5) round the predetermined fixing point,
    - placing on a holding element (13), which is substantially flat at the bottom (15) and has a central section (17) of considerably greater thickness, in which there is a through orifice (19),
    - inserting a fastening screw (23) into the through orifice (19) and screwing in the fastening screw (23) in such a way that first a lower end region (25) of the fastening screw (23), having a threaded section (29), penetrates through the length of waterproof roof sheeting (5) into the roof substructure (3), in order to be screwed into the roof element (11) provided, and then an upper end region (33), having a self-cutting threaded section (35), is screwed into the through orifice (19) of the holding element (13), until a sufficiently great contact pressure of the holding element (13) against the roof substructure (3) has ensued, owing to application of the head section (37, 39, 57) of the fastening screw (23), the outer diameter of which is larger than the inner diameter of the through orifice (19) of the holding element (13).
  11. Method according to claim 10, characterised in that the holding element (13) is also rotated by the engagement of the upper end region (33) of the fastening screw (23) and by touching the liquid film or the adhesive (45) distributes this at least annularly substantially evenly.
  12. Method according to claim 10 or 11, characterised in that, in particular in the case of roof insulation (7) made of polystyrene, a rubber or silicon washer is inserted between the holding element (13) and the length of waterproof roof sheeting (5).
EP01996658A 2000-11-16 2001-11-13 Device and method for fixing a roof sealing strip Expired - Lifetime EP1334249B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01996658A EP1334249B1 (en) 2000-11-16 2001-11-13 Device and method for fixing a roof sealing strip

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00125007 2000-11-16
EP00125007A EP1207243A1 (en) 2000-11-16 2000-11-16 Device and method of securing a roofing sheet
PCT/EP2001/013126 WO2002040803A1 (en) 2000-11-16 2001-11-13 Device and method for fixing a roof sealing strip
EP01996658A EP1334249B1 (en) 2000-11-16 2001-11-13 Device and method for fixing a roof sealing strip

Publications (2)

Publication Number Publication Date
EP1334249A1 EP1334249A1 (en) 2003-08-13
EP1334249B1 true EP1334249B1 (en) 2007-02-28

Family

ID=8170394

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00125007A Withdrawn EP1207243A1 (en) 2000-11-16 2000-11-16 Device and method of securing a roofing sheet
EP01996658A Expired - Lifetime EP1334249B1 (en) 2000-11-16 2001-11-13 Device and method for fixing a roof sealing strip

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00125007A Withdrawn EP1207243A1 (en) 2000-11-16 2000-11-16 Device and method of securing a roofing sheet

Country Status (5)

Country Link
EP (2) EP1207243A1 (en)
AT (1) ATE355426T1 (en)
AU (1) AU2002216036A1 (en)
DE (1) DE50112137D1 (en)
WO (1) WO2002040803A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009015208U1 (en) 2009-11-07 2010-03-04 Wörsching & Koch Technologie GbR (vertretungsberechtigter Gesellschafter: Peter Wörsching, 82335 Berg) supporting
DE102012101320A1 (en) 2012-02-17 2013-08-22 Sfs Intec Holding Ag Screw and thin sheet metal connection made therewith

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE399579B (en) * 1975-04-24 1978-02-20 Sandqvist Sune Allan WAY TO ATTACH A TIGHT LAYER TO A SURFACE
SE420231B (en) * 1978-02-15 1981-09-21 Bst Byggdetaljer Ab SET TO ATTACH A TEAM LAYER TO A SUBSTRUCTURE AND DEVICE FOR THE EXECUTION OF THE SET
US4686808A (en) * 1983-03-14 1987-08-18 John D. Gray Roofing system, method and holddown apparatus
AT380732B (en) * 1984-12-21 1986-06-25 Sfs Stadler Ag SCREW FOR FASTENING ROOF OR WALL CLADDING ELEMENTS OF PROFILED PANELS AND INSULATING LAYER UNDER THEREOF ON A FIXED BASE
GB8612003D0 (en) * 1986-05-16 1986-06-25 Dunlop Construction Products I Attaching sheet material to substrate
US4959938A (en) * 1989-08-28 1990-10-02 Caro Charles J De Non-seating plate/fastener assembly
DE4339760A1 (en) * 1993-11-22 1995-05-24 Sfs Ind Holding Ag Large base washer securing roofing strip

Also Published As

Publication number Publication date
EP1207243A1 (en) 2002-05-22
AU2002216036A1 (en) 2002-05-27
EP1334249A1 (en) 2003-08-13
ATE355426T1 (en) 2006-03-15
WO2002040803A1 (en) 2002-05-23
DE50112137D1 (en) 2007-04-12

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