EP0807726A2 - Elément de ventilation de toits - Google Patents

Elément de ventilation de toits Download PDF

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Publication number
EP0807726A2
EP0807726A2 EP97107350A EP97107350A EP0807726A2 EP 0807726 A2 EP0807726 A2 EP 0807726A2 EP 97107350 A EP97107350 A EP 97107350A EP 97107350 A EP97107350 A EP 97107350A EP 0807726 A2 EP0807726 A2 EP 0807726A2
Authority
EP
European Patent Office
Prior art keywords
ventilation element
sealing
element according
sealing strip
strips
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.)
Withdrawn
Application number
EP97107350A
Other languages
German (de)
English (en)
Other versions
EP0807726A3 (fr
Inventor
Fritz Gödl
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.)
Norm AMC AG
Original Assignee
Norm AMC AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norm AMC AG filed Critical Norm AMC AG
Publication of EP0807726A2 publication Critical patent/EP0807726A2/fr
Publication of EP0807726A3 publication Critical patent/EP0807726A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/17—Ventilation of roof coverings not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/17—Ventilation of roof coverings not otherwise provided for
    • E04D13/174—Ventilation of roof coverings not otherwise provided for on the ridge of the roof
    • E04D13/176—Ventilation of roof coverings not otherwise provided for on the ridge of the roof formed by flexible material suitable to be rolled up

Definitions

  • the invention relates to a ventilation element for roofs, with a fan cap to be arranged in the ridge, hip or ridge area and with at least one sealing member adjoining the edge area of the fan cap.
  • the ventilation element according to the invention includes a fan cap to be arranged in the term, hip or ridge area.
  • the word "fan cap” could lead to the assumption that it is a dimensionally stable, ie dimensionally stable body. However, this does not have to be the case.
  • “fan cap” is also understood to mean an element that can be elastic.
  • the ventilation element - in addition to a fan cap to be arranged in the ridge, hip or ridge area - includes at least one sealing member.
  • a ventilation element of the type in question - symmetrical to the fan cap - has two sealing elements.
  • the fan cap can also be a so-called "half cap", which only extends down from the ridge batten to one side of the roof. This half cap is then only provided with a sealing member.
  • the ventilation takes place by extracting the air located in the interior of the roof via air passage openings provided in the fan cap.
  • suction ventilation elements there are so-called suction ventilation elements.
  • the air passage openings can have any cross section, in particular a round or oval point.
  • the effective sealing member between the fan cap and the roofing material has essentially two functions. On the one hand, the sealing element should prevent the entry of flying snow and driving rain, i.e. ultimately the entry of moisture, into the interior of the roof. On the other hand, the sealing member is also intended to prevent air from entering the interior, ie below the fan cap, from outside, which could impair the ventilation or suction function of the ventilation element.
  • sealing elements made of foam in ventilation elements of the type in question. It is disadvantageous that with different spacing differences and / or sharp-edged transitions to the roof surface, the foam is not in a position due to its structure to ensure adequate tightness, e.g. B. to ensure against flying snow and driving rain. Air can also penetrate through the transition area between the foam and the adjacent roof tiles, which can severely impair the ventilation effect of the ventilation element.
  • a further disadvantage is that the foam is not resistant to aging, that is to say it becomes brittle and crumbly over time, so that the functional reliability of the fan cap is also not guaranteed.
  • foam requires a high compression pressure, which makes laying difficult and often leads to unsatisfactory work and sealing results. Finally, accessible areas of the fan cap are exposed to bird-eating.
  • a brush strip as a sealing member for ventilation elements, the brush strip having a large number of elastic brush threads arranged in at least largely flow-tight packing. It is disadvantageous that the fine thread ends, that is to say the individual thread tips, can bend, for example if they collide with obstacles, such as rough spots, edges, etc., whereby the tightness is questioned. Very good sealing results are achieved with ventilation elements which have brush strips as sealing elements, but the price for producing such ventilation elements is comparatively high.
  • the object of the invention is therefore to provide a ventilation element of the type mentioned, in which a good seal is guaranteed, which adapts evenly and homogeneously to any roofing material and is also inexpensive to manufacture.
  • the ventilation element according to the invention in which the previously derived and shown task is solved, is now initially and essentially characterized in that the sealing member arranged at least two in the direction one above the other has flat sealing strips running along the longitudinal axis of the fan cap and that each sealing strip has a plurality of preferably elastic transverse strips running essentially transversely to the direction of the longitudinal axis of the fan cap.
  • the ventilation element according to the invention initially offers the advantage of very inexpensive manufacture. This applies in particular when the fan cap and at least one sealing strip of the sealing member are formed in one piece, which can easily be done, for example, as part of an extrusion manufacturing process.
  • the sealing member according to the invention also offers very favorable sealing properties.
  • the individual, preferably elastic, transverse strips of each sealing strip can easily adapt to different spacing differences and / or sharp-edged transitions to the roof surface.
  • the stacking of the sealing strips results in a comparatively dense packing of the individual transverse strips. This applies in particular when the sealing strips arranged one above the other lie flat on top of one another and preferably run parallel to one another, and on the other hand are arranged offset to one another in such a way that incisions of one sealing strip located between adjacent transverse strips are at least substantially covered by transverse strips of the other sealing strip.
  • the individual transverse strips of the sealing strips can also be produced very simply, namely, for example, following the extrusion by cutting the edge area of the ventilation element.
  • the sealing member can then be completed by firmly connecting the second sealing strip to the fan cap or the sealing strip.
  • the connection can be designed as a welded or adhesive connection. It is understood that a sealing member designed in this way is much cheaper as a result is to be produced as a brush-shaped sealing member, but similarly good sealing properties are achieved.
  • the sealing properties of the sealing member are very much determined by the design of the individual transverse strips and their arrangement with respect to one another. According to the invention, it has been found that the length of the transverse strips should be many times greater than their width, while the width of the transverse strips is many times greater than their height or material thickness. This results in comparatively flat, thin and long horizontal stripes. This training also minimizes the risk of breaking off. In addition, the width of a transverse strip should be several times greater than the width of an incision between two adjacent transverse strips in order to achieve a good covering or covering of the individual incisions.
  • the transverse strips of the upper sealing strip protrude with their outer ends over the outer ends of the transverse strips of the lower sealing strip. This configuration ensures that the transverse strips of both the upper and the lower sealing strips rest on the roof surface and can accordingly seal at these points.
  • the ventilation element itself i.e. H. the fan cap and the sealing member made of an elastic material, such as an elastomer
  • This rib can also serve to prevent tearing of the ventilation element in the edge area.
  • an embodiment of the ventilation element according to the invention is particularly advantageous in that the ventilation element is flexible, in particular to a roll of sealing tape can be wound up or unwound from a roll.
  • This configuration makes it possible to first wind up the ventilation element or ventilation band, which is produced in relatively large lengths, so that space-saving storage or transport is possible.
  • the ventilation element or the sealing tape is then simply rolled out, positioned and fastened over the ridge batten. The time and thus the cost of installing the ventilation element designed in this way is consequently extremely low.
  • the fan cap and / or at least one of the sealing strips should consist of a preferably age-resistant and / or temperature-resistant plastic.
  • a UV-absorbing coating could be provided at least on the upper sealing strip.
  • the fan cap and / or at least one sealing strip could also consist of metal.
  • a ventilation element 1 which can be used in the ridge, hip or ridge area of a roof.
  • the ventilation element 1 is designed as a sealing tape and can have an infinite length per se. It has a correspondingly band-shaped fan cap 2, which has a central region 3 and two outer edge regions 4, 5 is provided. A sealing member 6, 7 is connected to each of the edge regions 4, 5.
  • the central region 3 of the fan cap 2 is used in the usual way for fastening the ventilation element 1 on a ridge batten, not shown here.
  • each of the sealing members 6, 7 has at least two superimposed flat sealing strips 8, 9 running in the direction of the longitudinal axis L of the fan cap 2 or the ventilation element 1, and that each sealing strip 8, 9 has a plurality of essentially Has, preferably elastic transverse strips 10, 11 extending transversely to the direction of the longitudinal axis L of the fan cap 2.
  • the illustrated embodiment of the fan cap 1 has two sealing strips 8, 9 arranged one above the other. It goes without saying that a larger number of sealing strips arranged one above the other can also be provided for a sealing member. Basically, the larger the number of sealing strips, the greater the tightness of the sealing member in question. 3 also shows that the fan cap 2 and a sealing strip 8, namely the sealing strip 8 lying at the top in the installed state of the ventilation element 1, are formed in one piece. “One piece” is to be understood to mean that the ventilation element 1 is formed from one material. In the exemplary embodiment shown, the fan cap 2 and the upper sealing strip 8 are an integral extrusion part.
  • the invention is not limited to extrusion parts, but that ventilation elements produced in other ways are also covered by the present invention. This applies in particular to ventilation elements that are not made of plastic, although the use of elastically or plastically deformable plastic is particularly favorable in view of the particular suitability for laying in the roof area and the manufacturing costs.
  • the connection can be a welded or adhesive connection.
  • the lower sealing strip 9 in the present case consists of the same material as the upper sealing strip 8 and thus like the fan cap 2. Since the fan cap 2 and the upper sealing strip 8 merge directly into one another, they also have the same material thickness. This material thickness also has the lower sealing strip 9, wherein both sealing strips 8, 9 lie flat on top of one another to form a tight packing and preferably run approximately parallel to one another. This applies at least to the state shown, in which the ventilation element 1 has not yet been installed.
  • connection shown between the respective sealing member 6, 7 and the fan cap 3 another type of fastening can in principle also be implemented.
  • a clip connection a complete adhesive connection or a screw connection can be considered.
  • the sealing members 6, 7 are separate components which, if necessary, at the latest when laying, are connected to the fan cap 2 in the manner described above.
  • the upper sealing strip 8 and the lower sealing strip 9 are arranged offset to one another in such a way that incisions between adjacent transverse strips 10, 11, which are not identified in detail, of the one sealing strip 8, 9 at least substantially from Cross strips 10, 11 of the other sealing strip 8, 9 are covered.
  • This configuration is chosen deliberately in order to achieve a high level of tightness of the respective sealing member 6, 7.
  • the length of the transverse strips 10 of the upper sealing strip 8 is about 6 cm. Basically, the length should be between 3 and 10 cm.
  • the length of the transverse strips 11 of the lower sealing strip 9 is somewhat less. It is about 5 cm.
  • the width of the transverse strips 10, 11 is approximately 3 mm, while the material thickness is approximately 1 mm. Due to their elongated flat design with a rectangular lying in cross section In shape, the transverse strips 10, 11 hardly tend to break off, stand up or lift off the roofing material if the roofing material heats up excessively.
  • the width of a single transverse strip 10, 11 is several times greater than the width of an incision between two adjacent transverse strips 10 and 11.
  • FIG. 3 does not show a representation to scale.
  • the transverse strips 11 of the lower sealing strip 9 are shorter than the transverse strips 10 of the upper sealing strip. It is crucial in this context that the transverse strips 10 of the upper sealing strip 8 project with their outer ends over the outer ends of the transverse strips 11 of the lower sealing strip 9.
  • a protrusion of approximately 5 mm has been selected. In principle, the overhang should be between 2 and 10 mm. With the selected projection, it can be ensured with the most common roof pitches that the front, outer ends of the respective transverse strips 10, 11 still rest on the roof surface, while at the same time ensuring that the sealing strips 8, 9 still lie directly on one another, so that the tightness of the sealing member 6, 7 concerned is maintained.
  • a rib 12 running in the direction of the longitudinal axis L is provided in the transition area from the fan cap 2 to the respective sealing element 6, 7.
  • the rib 12 serves essentially for stiffening purposes and, which is not shown, can also have a wire insert.
  • the rib 12 is located on the outside on the edge region 4, 5, namely opposite the lower sealing strip 9.
  • the rib 12, which of course could also be arranged on the opposite side, is preferably connected to the fan cap 2 in the same way as the lower sealing strip 9.
  • the ventilation element 1 is a sealing tape which can be easily wound up into a roll or unwound from a roll, but this is not shown in detail.
  • This compact shape of the ventilation element 1 makes it possible to transport it without any special effort. The transport of the ventilation element 1 is thus considerably simplified.
  • the ventilation element according to the invention is preferably produced in such a way that an endless base strip is first produced, for example by extrusion.
  • the ventilation openings 13, 14 provided in the central region 3 at the transition to the respective edge regions 4, 5 are then shaped or punched out. If necessary, tubular or ring-shaped inserts are inserted into the ventilation openings 13, 14 in order to achieve chimney-like passages. Then or at the same time, the outer edge areas of the resulting ventilation element 1 are cut, so that the sealing strip 8 with its transverse strips 10 results.
  • the lower sealing strip 9, into which the transverse strips 11 have previously been cut, and the rib 12 are then connected to the ventilation element 1.
  • the fan cap 2 with the upper sealing strip, the lower sealing strip and the rib, which are separate elements, in one process step.
  • a flat strip must be produced, the width of which is twice the width of the lower sealing strip 9, twice the width of the rib 12, than the width of the ventilation element shown in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Building Environments (AREA)
EP97107350A 1996-05-17 1997-05-03 Elément de ventilation de toits Withdrawn EP0807726A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29608830U 1996-05-17
DE29608830U DE29608830U1 (de) 1996-05-17 1996-05-17 Lüftungselement für Dächer

Publications (2)

Publication Number Publication Date
EP0807726A2 true EP0807726A2 (fr) 1997-11-19
EP0807726A3 EP0807726A3 (fr) 1998-07-08

Family

ID=8024038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107350A Withdrawn EP0807726A3 (fr) 1996-05-17 1997-05-03 Elément de ventilation de toits

Country Status (2)

Country Link
EP (1) EP0807726A3 (fr)
DE (1) DE29608830U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544372A1 (fr) * 2003-12-19 2005-06-22 Norm A.M.C. Ag Closoir de ventilation pour toits
EP1617007A2 (fr) 2004-07-15 2006-01-18 Hubert Rickert Elément d'aération pour toitures

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606843A1 (de) * 1996-02-23 1997-08-28 Alfons Knoche Aufrollbares First- und Gratbelüftungselement und Verfahren zu dessen Herstellung
DE19643591B4 (de) * 1996-10-22 2007-08-30 Hubert Rickert Lüftungselement für Dächer mit Abdichtorgan
EP0854253A1 (fr) * 1997-01-17 1998-07-22 Alfons Knoche Aérateur universel extrudé à éléments plissés

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2707384A1 (de) * 1977-02-21 1978-08-24 Herbst Karl Heinz Lueftungsfirstkappe fuer dachziegel und pfannendaecher
DE3306837A1 (de) * 1983-02-26 1984-10-04 Braas & Co Gmbh, 6000 Frankfurt First- oder gratabdeckung fuer mit dacheindeckungsplatten eingedeckte daecher
DE4226817A1 (de) * 1992-08-13 1994-02-24 Norm Amc Ag Lüfterkappe zur Hinterlüftung von Dächern
DE29504548U1 (de) * 1995-03-17 1995-06-22 Bwk Dachzubehoer Gmbh Dichtungsstreifen zum Herstellen von First- oder Gratabdeckungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544372A1 (fr) * 2003-12-19 2005-06-22 Norm A.M.C. Ag Closoir de ventilation pour toits
EP1617007A2 (fr) 2004-07-15 2006-01-18 Hubert Rickert Elément d'aération pour toitures

Also Published As

Publication number Publication date
DE29608830U1 (de) 1996-08-14
EP0807726A3 (fr) 1998-07-08

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