DE29600730U1 - Rollable sealing strip for a ridge and / or ridge cover - Google Patents

Abstract

The middle part (2) of the one-piece sealing strip (1) rests on the ridge fillet. The adjacent side parts (3,3';4,4'), made especially of plastically deformable material, have outer longitudinal edges matching the top of the roof covering panels. The middle part leads into the side strips via at least tow lengthwise ridges (6,6';7,7') each possessing a section (5,5') with pre-set length. The deformable material is colour-coated or tin-plated lead, tin or copper. The middle and or side strips can be corrugated or smooth. The side strips have a lengthwise gap (8,8') to form an edging strip (4,4').

Description

PATENT ATTORNEY , : ; ; ,*.,:;

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DIPL.

HEINER LICHTI * "

DiPL-PHYS. dr. RER. NAT. JOST LEMPERT D-76207 KARLSRUHE (DURLACH)

PO BOX 410760 NG. HARTMUT LASCH TELEPHONE: !0721)9432815 FAX: IO72II943284O

Dr. Manfred Gehring
Hermann-Hesse-Strasse 18

D-72250 Freudenstadt ¹⁶ · ^{January 1996}

1358§.2/95

Rollable sealing strip for a ridge cover

The invention relates to a rollable sealing strip for a ridge and/or hip cover that allows air to pass through, with a central region intended to rest on a ridge and/or hip batten and with adjacent side strips, in particular made of plastically deformable material, which can be adapted to the upper side of roof covering panels at least with their outer longitudinal edges.

A generic sealing strip consists of a pleated, air-permeable and water-repellent PP fleece and is provided with a lead insert on the edge area on its underside, to which butyl adhesive is applied. This adhesive strip is covered by a protective film that is removed when it is applied to the roof. In its middle area, which is placed on the hip and/or ridge batten, the sealing strip has an interruption in the PP fleece structure

of its total length, which is covered and protected by a flat fleece on top. The disadvantage of this rollable sealing strip or ventilation element is, on the one hand, the lack of active air flow, which is caused by the fact that no ventilation openings are provided. The ventilation element is indeed designed to be permeable to air. However, this only allows diffusion, as rising warmer air escapes when there is no wind, thus ensuring ventilation.

Of course, air that has been "pressed in" in the eaves area of the roof can also escape. However, this is not the norm. These types of ventilation are merely passive ventilation, and their effect is insufficient. The suction effect required for active ventilation in the ridge or hip area cannot occur with this ventilation element.

On the other hand, recycling the materials used is extremely difficult. If recycling is not possible, the only disposal alternatives are landfilling or, if necessary, incineration after complex separation, with the associated subsequent costs. However, this is not desirable for environmental reasons. Furthermore, such sealing strips are only manufactured for specified ridge and/or hip batten widths.

The invention is therefore based on the object of

To create sealing strips of the type mentioned above,

0 which, while avoiding the aforementioned disadvantages,

Advantages of known ventilation elements, but

can be manufactured easily and inexpensively and fixed to ridge and/or hip battens of different widths.

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According to the invention, the above-mentioned object is achieved in a sealing strip of the type mentioned at the outset in that the central region or strip of the sealing strip merges into the side strips via at least two longitudinal beads, each of which has a section of a predetermined length between them. Due to this design, the sealing strip has pre-formed bending edges, which can be adapted to different ridge and/or hip batten widths. Accordingly, only one sealing strip needs to be produced for different ridge and/or hip battens, which both simplifies the production process and makes it more cost-effective. For example, the beads and sections can be designed in such a way that they correspond to the ridge batten widths of known ridge battens of 3 or 5 cm. The adjacent beads are then spaced 10 mm apart from one another.

In a further development, it is intended that the sealing strip is made in one piece. In this way, only a single component is used to produce the rollable sealing strip. This also contributes to cost-effective and simple production. The plastically deformable material metal is preferred. Due to the use of metal, plastics that are difficult to recycle are dispensed with. This provides the possibility of complete recycling. The sealing strip according to the invention no longer entails any subsequent burdens that occur when using plastics. Furthermore, metals are not flammable, which is the case with the known PP fleeces. Accordingly, in the event of a fire, almost no

toxic substances that could have an impact on the environment.

In further development, it is planned that the metal is lead. The use of tin or copper is also possible. Such a sealing strip is extremely resistant, so that hardly any rotting of the material occurs. The sealing strip is also not attacked by UV radiation, especially by increasing UV radiation, so that the service life is longer than conventional sealing strips made of plastic. The durability can be in the range of the 30-year guarantee that brick manufacturers give on their bricks. When using lead sheet, the entire sealing strip is also ideally adapted to any brick or pan shape, etc., since lead is dimensionally stable, but can be rolled and optimally adapted to the shape of the roof covering panels. Lead is characterized by its high flexibility and can therefore seal even very deep wave valleys in a roof covering. No adhesives, such as glue, are required in the edge area. Accordingly, the work step in which an adhesive layer must be applied to the underside of the sealing strip is also eliminated.

If the lead is coated, this provides additional corrosion protection, and secondly, if a red, brown or anthracite-colored coating is used, the surface can be used to match the color of the brick. If the lead is tinned, the tin plating ensures that no lead carbonate gets into the wastewater.

In order to ensure optimal water drainage over the entire sealing strip, the middle area and preferably also the side strips are corrugated. The corrugations or pleats formed in this way then serve as water drainage channels. At the same time, the sealing strip has a high stretchability due to this design and can therefore be adapted by hand to any tile shape. Furthermore, this design ensures the overflow channels for roof ventilation required for the ridge batten area. Instead of a corrugated pleat for the middle area and/or the side strips, it can also be provided that the middle area and/or the side strips are smooth. When pleating the middle strips and/or the side strips, a design other than a corrugated pleat is also possible. For example, the pleats can also be sharp-edged in the form of a zigzag line or angular with a periodically repeating, rectangular course. The edges of the square or sharp-edged version can also be rounded with small radii on the edges.

The side strips are preferably each provided with a longitudinal interruption to form an edge strip. A section of the side strips facing the central area can, however, also merge into an edge strip without interruptions. This edge strip bridges the gap between the roof covering panels and the adjacent cover elements in a sealing manner. The fact that such an edge strip is arranged on both sides of the sealing strip results in complete sealing.

of the under-roof area from roof side to roof side. If the roof covering used is a "beaver" roof covering, edge pleating is preferably omitted and a smooth edge strip is used for optimal sealing.

The interruptions, which are further developed in the form of a longitudinal bead, result in areas for the sealing strip with a spoiler-like effect. In the case of forced convection, the air flowing in from the outside in the event of a crosswind is swirled in the area of these interruptions, particularly due to the subsequent "bulging" of the pleats, and is thus prevented from flowing in, while such an effect does not occur when flowing out on the opposite roof slope. This leads to a slight negative pressure in the space between the sealing strip and the ridge cap to be attached, which has a beneficial effect on the flow from the inside of the roof. For this purpose, the section of the side strips arranged between the central strip and the edge strip is also provided with ventilation openings. This ensures good and rapid heat dissipation on hot summer days and safe removal of moisture in the ventilation gap below the ridge caps on cold and rainy days.

In a preferred embodiment, the sealing strip formed by the central area and the side and edge strips can have a total width of between 150 and 400 mm. The total width of the sealing strip is determined only by the width of the edge strips, while the central area and the section between the edge strip and the central area

for sealing strips of different overall widths, each have a constant width. Accordingly, it is possible, for example, to produce sealing strips of the largest overall width, whereby the edge strips can then be shortened to the desired width. This also simplifies the production process for sealing strips of different overall widths.

Because the ventilation openings each have an edge in the form of a bulge, the turbulence caused by the interruptions near the edge is increased in the case of forced convection. In the case of free thermal convection without crosswind, the air flowing out of the roof into the flow space can flow out on both sides. Rain or condensation water, as well as any water that has been driven in, is led out through the troughs of the pleats. The penetration of water, for example from driving rain, is greatly hindered by the interruption in the edge area and the edges of the ventilation openings. Due to these designs, active ventilation in the ridge area is possible. A suction effect is created in the ridge area below the ridge tile or stone or in the ridge area below the ridge tile or stone when there is wind, so that forced ventilation or convection is created. The suction effect is caused on the one hand by the fact that on the leeward side of the roof, when there is wind, a negative pressure zone is created by the break in the wind flow at the ridge, into which air from the area below the ridge tile or stone is drawn. The air turbulence mentioned above occurs at the edges or borders of the ventilation openings, which makes it possible for both the windward and the

Ventilation is forced through the ridge area on the lee side. If there are no such edges or bulges on the ventilation openings, as is the case with the ventilation elements known from the state of the art, there is no air turbulence and therefore only a relatively weak suction effect results, which impairs the active ventilation on both sides.

In a preferred embodiment, the ventilation openings run perpendicular to the longitudinal beads, extending essentially over the length of the wave crests of the section arranged between the central and edge strips. Preferably, each wave crest is provided with a ventilation opening. Due to the arrangement of the ventilation openings in the transverse direction of the sealing strip, unwanted water/snow ingress into the interior of the roof is almost impossible. Due to the arrangement of the ventilation openings in each wave crest, these are so numerous that a ventilation cross-section of up to 320 cm ² /linear meter can be achieved.

Consequently, DIN 4108 paragraph 3 is more than fully met.

In a second preferred embodiment, the ventilation openings are arranged in the form of openings in bulges. The bulges preferably have a peripheral edge that is recessed relative to the wave crests. These bulges are therefore no longer part of the wave crests, but are formed separately from them. Furthermore, due to the peripheral edge and the bulges, rain or condensate cannot penetrate into the openings and thus into the interior of the roof. The ventilation openings can be round, square or oval, with the latter having a ratio of about 2:1 between the width of the

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Ventilation openings seem to be optimal for their length. The choice of ventilation openings depends on the desired air flow. The openings in the bulges can be easily achieved by punching them out. However, this does not reduce the stability of the sealing strip in any way.

Overall, this creates a sealing strip that is extremely durable due to the material used and its UV stability, and can also be installed on the roof of a house very easily and with little installation time. Furthermore, such a sealing strip according to the invention provides optimal active ventilation in the ridge or hip area.

Further advantages and features of the invention emerge from the claims and from the following description, in which an embodiment of the sealing strip according to the invention is explained in detail with reference to the drawings.

Fig. 1 is a perspective view of a sealing strip according to the invention;

Fig. 2 shows a partial section of the sealing strip from Fig. 1 showing the ventilation openings;

Fig. 3 is a plan view of the sealing strip according to the invention with ventilation openings modified compared to Figs. 1 and 2;

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Fig. 4 is a side view of the sealing strip along the line A-A of Fig. 3 and a top view of the ventilation openings; and

Fig. 5 is a plan view of a sealing strip with round ventilation openings.
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In the embodiments shown in Figs. 1 to 5, identical components are each provided with the same reference numerals.

The sealing strip 1 according to the invention shown in Fig. 1, 3 and 5 consists of a central region 2 and side strips 3, 3', 4, 4' connected to the central region 2 on both sides of the sealing strip 1. In the embodiment shown here, two longitudinal beads 6, 7, 6 1 , 7 ¹ are arranged between the central region 2 and the adjoining side strip or section 3, 3', each of which has a section 5, 5' of a predetermined length, here 10 ^mm . The central region 2 and the sections 3, 3' can be angled against one another using these longitudinal beads 6, 6 ¹ , 7, 7 ¹ .

Furthermore, a longitudinal bead 8, 8 ¹ is also provided as an interruption between the section 3, 3' and the adjacent side strip or edge strip 4, 4 ^1. The section 3, 3' and the edge strip 4, 4' can also be angled against each other via this interruption 8, 8'.

These interruptions 8, 8" serve to create turbulence when both air and water enter.

As can be further seen from Figs. 1, 3 and 5, the sealing strip 1 is formed in one piece, wherein in this embodiment both the central region 2 and the side strips 3, 3 ^' and 4, 4' are each provided with pleats.

As can be seen in particular from Fig. 2, the sealing strip 1 from Fig. 1 in a first embodiment has longitudinal openings 9 extending in the transverse direction in its section 3, 3' as ventilation holes, which run evenly spaced from one another over the entire longitudinal direction of the sealing strip 1. The longitudinal openings 9 are each formed in bulges 10, which are obtained in section 3, 3 ^' of the sealing strip 1, for example by punching out the wave crests 11 of the pleats. Air can flow out of the interior of the roof and reach the area of the ridge cap via these ventilation openings 9. Furthermore, the bulges or edges 10 serve as moisture protection.

The wave troughs 12 formed between the wave crests 11 serve in particular to drain away driven-in water and condensate.

The shape of section 3, 3· and the longitudinal beads 8, 8' ensures optimal air flow in the ridge area and thus roof ventilation in accordance with DIN 4108, paragraph 3.

In the second embodiment shown in Fig. 3 and 4, the sealing strip 1 has in its section 3, 3' bulges 13, 13' with a peripheral edge 14, 14', the latter being recessed relative to the wave crests of the section 3, 3'. In the bulges 13, 13', which are oval in the embodiment shown, openings 15, 15' in the form of elongated holes are formed as ventilation openings, in particular obtained by punching. The width b of the ventilation openings 15, 15' to their length 1 preferably has a ratio of approximately 2:1. The height h of the bulges is 1 to 10 mm. Instead of this oval design, the ventilation openings can also be square.

In the third embodiment shown in Fig. 5, circular bulges 16, 16' are embossed in section 3, 3', which are centrally provided with circular ventilation openings 17, 17'. The diameter 0 of the ventilation openings 17, 17' is preferably somewhat less than 10 mm, while the width b of the oval ventilation openings 15, 15' from Fig. 3 and 4 is approximately 30 mm and their length 1 is approximately 15 mm. Here too, instead of the round or circular design, a square design of the ventilation openings is possible.

Sealing strips such as the one according to the invention are preferably manufactured in a length of several meters and then delivered in the form of rolls. Such rolls are easy to store and transport and easy to handle and lay even under difficult conditions on a pitched roof. The rolls are rolled out over the ridge or hip batten and then fastened there. Due to the defined bending edges between the center

area 2 and section 3, 3', such a sealing strip can be optimally adapted to ridge or hip battens of different widths. Due to the pleats, as well as the use of a plastically deformable material, in particular lead, and the interruption 8, 8' between section 3, 3' and edge strip 4, 4', extremely rapid sealing of the ridge or hip area on the pitched roof is achieved even under unfavorable conditions.

The edge strips 4, 4' are placed on the top of the ridge-side roof covering panels, whereby they are formed exactly to the contours of the roof covering panels and adhere very well. A sealing strip according to the invention can be used universally for any roof covering panels, whereby, for example, with beaver roof covering panels the edge pleating is omitted, and for any roof pitch.

In order to obtain sealing strips 1 of different widths in a range between 150 and 400 mm, only the edge strips 4, 4' are provided with different widths. The central area 2 and the sections of the side strips 3, ^3' provided with the ventilation openings remain the same width for each sealing strip 1.

Overall, this creates a rollable sealing strip that is not only characterized by a long service life, is highly recyclable and easy and inexpensive to produce, but can also be optimally adapted to different ridge and hip batten widths.

Claims (27)

1. Rollable sealing strip for a ridge and/or hip cover that allows air to pass through with a central area intended to rest on a ridge and/or hip batten and with adjoining side strips, in particular made of plastically deformable material, which can be adapted at least with their outer longitudinal edges to the top of roof covering panels, characterized in that the central area or strip (2) of the sealing strip (1) merges into the side strips (3, 3 ¹ , 4, 4 ¹ ) via at least two longitudinal beads (6, 6 ¹ , 7, 7') each having a section (5, 5') of predetermined length between them. 2. Sealing strip according to claim 1, characterized in that the sealing strip (1) is formed in one piece. 3. Sealing strip according to claim 1 or 2, characterized in that the plastically deformable material is metal. 4. Sealing strip according to claim 3, characterized in that the metal is lead. 5. Sealing strip according to claim 3, characterized in that the metal is tin. 6. Sealing strip according to claim 3, characterized in that the metal is copper. 7. Sealing strip according to claim 4, characterized in that the lead is coated in color. 8. Sealing strip according to claim 4 or 7, characterized in that the lead is tinned. 9. Sealing strip according to one of the preceding claims, characterized in that the central region (2) and/or the side strips (3, 3", 4, 4 ^' ) are corrugated. 10. Sealing strip according to one of the preceding claims, characterized in that the central strip and/or the side strips are smooth. 0 11. Sealing strip according to one of the preceding claims, characterized in that the side strips (3, 3', 4, 4 ¹ ) are each provided with a longitudinal interruption (8, 8 ¹ ) to form an edge strip (4, 4 ¹ ). 12. Sealing strip according to claim 11, characterized in that the edge strip (4, 4 ¹ ) is smooth. 13. Sealing strip according to claim 11 or 12, characterized in that the interruption (8, 8') in
Form of a longitudinal bead. 14. Sealing strip according to one of claims 11 to
14, characterized in that the area defined by the central region (2) and the side and edge strips
(3, 3', 4, 4') has a total width of between 150 and 400 mm. 15. Sealing strip according to claim 14, characterized in that sealing strips (1) of different overall widths each have a central region (2)
of the same width and sections (3, 3') of the side strips arranged between the central region (2) and the edge strips (4, 4') of the same width. 16. Sealing strip according to one of the preceding
Claims, characterized in that the strip (2, 4, 4 ¹ ) arranged between the central and edge strips
Section (3, 3 ¹ ) of the side strips (3, 3 ¹ , 4, 4 ¹ ) is provided with ventilation openings (9, 15, 15', 17, 17'). 0 17. Sealing strip according to claim 16, characterized in that the ventilation openings (9) run perpendicular to the longitudinal beads (6, 6', 7, 7', 8, 8'). 18. Sealing strip according to claim 16 or 17, characterized in that the longitudinal openings (9) extend substantially over the length of the wave crests (12) of the section (3, 3'). 19. Sealing strip according to one of claims 16 to 18, characterized in that each wave crest (12) is provided with a ventilation opening (9). 20. Sealing strip according to one of claims 16 to 19, characterized in that the ventilation openings (9) each have an edge in the form of a bulge (10). 21. Sealing strip according to claim 16, characterized in that the ventilation openings (15, 15 ¹ , 17, 17') are arranged in the form of openings in bulges (13, 13·, 16, 16'). 22. Sealing strip according to claim 21, characterized in that the bulges (13, 13', 16, 16') have a peripheral edge (14, 14') which is recessed relative to the wave crests (12). 23. Sealing strip according to claim 21 or 22, characterized in that the ventilation openings (17, 17') are round. 24. Sealing strip according to claim 21 or 22, characterized in that the ventilation openings are angular. 25. Sealing strip according to claim 21 or 22, characterized in that the ventilation openings (15, 15·) are oval. 26. Sealing strip according to claim 25, characterized in that the width b of the ventilation openings (15, 15') to their length l has a ratio of approximately 2:1. 27. Sealing strip according to one of claims 21 to 26, characterized in that the bulges (13, 13', 16, 16') have a height h of 1 to 10 mm.