EP0693152A1

EP0693152A1 - Ventilation strip

Info

Publication number: EP0693152A1
Application number: EP95909621A
Authority: EP
Inventors: Karl-Heinz Hofmann; Winfried Schäfer
Original assignee: Braas GmbH
Current assignee: Monier Roofing Components GmbH; Monier Roofing GmbH
Priority date: 1994-02-10
Filing date: 1995-02-07
Publication date: 1996-01-24
Anticipated expiration: 2015-02-07
Also published as: HUT72560A; SI9520002A; SK282547B6; HU213795B; RO114822B1; EP0693152B1; NO954016D0; CZ285387B6; FI954798A0; NO305612B1; CZ263595A3; DE59501316D1; ATE162580T1; PL187159B1; LV11353A; LT4090B; SK126295A3; RU2107788C1; LV11353B; EE03182B1

Abstract

The invention relates to a ventilation strip (10; 110) for ventilating the eaves, a ridge or an edge of a roof, with at least one section (12; 114, 116) extendable along the ventilation strip (10; 110) which can be fitted to the shape of contoured roofing panels, and a section (14; 112) which is substantially rigid along the ventilation strip (10; 110) and parallel to the first section. The extendable section (12; 114, 116) has elongated holes and/or slots (30) in mutually staggered rows transversely to the ventilation strip (10; 110) and the elongated holes and/or slots (30) in one row are separated by at least one longitudinal web (34) running along the ventilation strip (10; 110). A ventilation strip (10) for the eaves may have apertures (20) for guttering brackets (70) and in a strip (110) for ridges or edges there may be an extendable section (114, 116) on either side of the rigid section (112). The extendable section (114, 116) may be folded in a zigzag with longitudinal fold lines (122, 124, 126, 128). There may ben an air-permeable and/or waterproof material covering (134) extendable longitudinally and transversally at least in the extendable section (12).

Description

Ventilation band

The invention relates to a ventilation band for ventilating an eaves, a ridge or a ridge of a roof, with at least one section which can be shaped onto the contour of profiled roofing panels and stretchable in the longitudinal direction of the ventilation band and a section which is parallel to this and essentially rigid in the longitudinal direction of the ventilation band.

Particularly in the area of eaves, a ridge or a ridge, but also on the cross bars of sloping roof windows or when connecting components that protrude from the roof surface, such as chimneys or walls, free openings with large cross-sectional areas are created, particularly with strongly profiled roofing panels. In the area of eaves, ridges or ridges, these openings are desirable for ventilation, but allow access for small animals and birds. In order to obtain the desired ventilation as completely as possible, but at the same time to prevent the access of small animals and birds, the openings formed by the profiles of the roofing panels must be closed with air-permeable material.

From DE 83 05 481 Ul a ventilation band for the ridge or ridge of a roof covered with roofing panels is known. The ventilation band has an elastically flexible carrier strip as a section which is essentially rigid in the longitudinal direction of the ventilation band and with which the ventilation band can be fastened to a ridge or ridge plank. On at least one longitudinal edge, the carrier strip is provided with a comb-like edge part made of elastically deformable material, the teeth of which are connected to one another by an edge strip bridging the tooth gaps and made of flexible material, which nestles against the top of the roofing panels. The comb-like edge part forms a section which can be stretched in the longitudinal direction of the ventilation band.

From DE 30 08 167 AI a ventilation band is known with an essentially rigid strip-shaped section in the longitudinal direction, from which at least to one side directed closely adjacent elastic tongues protrude, which form a stretchable section in the longitudinal direction of the ventilation band.

DE 40 06 864 CI describes an eaves ventilation profile which consists of a basic profile provided with air passage openings and to be laid between the eaves-side edges of roof covering panels of the eaves-side panel row and the underlying roof structure, with flexible fingers protruding like a comb on the top.

When the teeth, tongues or fingers, of the comb-like edge parts of the above-described designs are nestled together, gaps several millimeters wide are created through which small animals such as bees or wasps can penetrate. When laying such a ventilation band on the eaves with tines pointing towards the ridge, birds are able to separate

Bend the teeth of the comb aside and slip through the grille. However, the tines block the path in the opposite direction. The design according to DE 83 05 481 Ul avoids this disadvantage with the aid of an additionally attached edge strip made of flexible material, which bridges the tooth gaps. The production of this ventilation band is complex because the edge strip must be connected to each of the teeth by welding or gluing.

The object of the invention is to provide a ventilation band preventing the passage of animals, which can be produced in one piece in a few work steps, preferably a single work step, as piece goods exists that is rolled up to a roll in a length of several meters and can be installed on the roof construction site without further preparation steps. The ventilation band should also enable waste-free processing, easy cutting to length directly at the installation location with the help of simple foil scissors, conformability to given profiles and contours and folding with the least effort. Combining the above-mentioned properties, the ventilation band should be weatherproof and dimensionally stable for many decades. If one day the ventilation band is used as old material due to new construction measures, it should be possible to recycle it with as little effort as possible.

According to the invention, the object is achieved in that the stretchable section is provided with elongated holes and / or slots which run in the transverse direction of the ventilation band and are arranged in mutually offset rows, and the elongated holes and / or slots in a row are each provided with a longitudinal web running in the longitudinal direction of the ventilation band are separated.

As a result of the section which is essentially rigid in the longitudinal direction of the ventilation band, the ventilation band has a stability which is advantageous during assembly. The rigid section can also be made rigid in the transverse direction, for example as a grid.

The underside of a profiled roof covering has a greater stretched length than the length of the eaves, and the top of a profiled roof covering has a greater stretched length than the length of the ridge or ridge. The section that can be stretched in the longitudinal direction of the ventilation band enables the ventilation band to be shaped precisely and uniformly to the contour of any profiled roofing. A particularly good Anfor availability on the contour of very strongly profiled roof coverings is achieved by elongated holes or slots arranged in the stretchable section essentially in the transverse direction in staggered rows. An arrangement in staggered rows means that the in

Longitudinal webs extending in the longitudinal direction of the ventilation band between the elongated holes or slots of one row are offset with respect to these longitudinal webs of the adjacent row by a fraction of the length of the elongated holes or slots, preferably by half the length. As a result, the elongated holes can deform approximately rhomboidally when stretched transversely, the originally straight transverse webs each being angled in the middle, so that the holes assume an approximately diamond-shaped shape. It goes without saying that elongated holes can also be diamond-shaped from the outset with a large length and a small width, the width increasing and the length decreasing during stretching.

The stretchable section can be carried out directly adjacent to the rigid section, it is also possible to provide an intermediate section between these sections, which consists, for example, of air-permeable nonwoven material. This is particularly advantageous if the rigid section is made of air-impermeable material.

A grid is advantageously provided in the rigid section. This can, for example, have a round perforation or a rectangular or square perforation, with webs running through in the longitudinal direction of the ventilation band.

The assembly of a ventilation band designed for a eaves is made easier if it has through openings for gutters which are arranged in a linear arrangement in the region between the stretchable and rigid section. The passage openings can be designed as elongated holes with dimensions corresponding to the cross sections of gutters. This creates the possibility of Push the gutters through almost anywhere along the eaves without affecting the properties of the ventilation band. If a gutter should hit a web, it can be cut safely.

In the eaves area, the ventilation band is usually placed facing the eaves on an eaves formwork, the top of which runs approximately parallel to the roof surface. After attaching a counter batten, a roof batten and possibly an eaves batten, the ventilation band on the front lower edge of the counter batten is angled approximately at right angles along the front of the batten towards the underside of the roof covering. After placing the roof covering, the stretchable section of the ventilation band protruding over the slats is angled towards the eaves, if necessary, and molded onto the underside of the roof covering.

In the case of a ventilation band designed for a ridge or a ridge, a stretchable section is advantageously provided on both sides of the rigid section. Such a ventilation band can be laid symmetrically to the ridge or ridge slat.

So that the ventilation band does not bend too much in particular on a ridge or ridge in the rigid section, stiffening can be provided in this section. This stiffening can be a strip of, for example, hard PVC arranged below or above the ventilation band and connected to it. If ventilation in the rigid section is desired, the strip can be provided with ventilation openings.

A wire or the like can also be provided as a stiffening at the edge of the rigid section. Stiffening of material rigid in the longitudinal direction of the ventilation band can at the same time prevent the band from stretching in this direction, so that it is possible to provide a ventilation band provided with such a stiffening over its entire width to produce from longitudinally stretchable material, in particular from expanded metal. In this case, the rigid area is limited by the stiffening.

The bending of the ventilation band in a straight line is facilitated if at least one predetermined bending line is provided in and / or adjacent to the rigid section.

If the ventilation band is to be used in the area of an eaves on which fewer than the three slats described above are provided, so that there is a shorter distance between the eaves formwork and the top edge of the slats, a correspondingly wider section of the ventilation band can be placed under the slats become. It is therefore advantageous if a plurality of predetermined bending lines running parallel to one another in the longitudinal direction are provided in the thicknesses corresponding to the slats.

A predetermined bending line can be formed by a row of holes, preferably with elongated holes, which can also be designed as through openings for channel irons. In other embodiments, a predetermined bending line can be formed by strip-shaped areas made of material with reduced bending stiffness, by strip-shaped areas made of material with reduced thickness or else by joints such as hinge joints.

The width of the stretchable section depends on the height difference of the contour to be compensated. To widen one

To avoid protrusion of the ventilation band according to the invention, for example when used on eaves, ridges or ridges, it is recommended to fold the ventilation band in the stretchable section in a zigzag with bending lines running in the longitudinal direction of the ventilation band. In the delivery state, the stretchable section is then ziehar onika folded several times over one another and can be unfolded both transversely to the bending lines and adapted to a strongly pronounced contour can also be stretched lengthways. Depending on the height difference of the contour to be covered, the zigzag fold can be formed from three or more layers lying one above the other.

The penetration of very small animals or flying snow is prevented if, at least in the stretchable section or the stretchable sections, a cover made of air-permeable material that can be stretched in the longitudinal and transverse directions is provided with very small passage openings such as a knitted fabric or a fleece. Advantageously, the cover is connected to the ventilation band only at its longitudinal edges, so that the expansion is distributed over the entire width of the cover. The cover can be guided around the stretchable section in the edge area and glued to it. In this way, the cover always takes up the smallest area between the edge area and the rigid section, so that the zigzag fold of the ventilation band is not visible from the outside.

Rainwater cannot penetrate through the ventilation band if a cover made of waterproof material that can be stretched in the longitudinal and transverse directions is provided at least in the stretchable section or sections.

A particularly simple option is to coat the air-permeable material in a watertight manner. This can be done, for example, by means of a microporous coating that is waterproof and yet permeable to air.

A particularly good seal of the ventilation tape is achieved if a strip of self-adhesive material which can be stretched in the longitudinal direction is provided on the edge of the ventilation tape on the side facing the roof covering panels.

Such a ventilation band can also be used to cover the openings on the cross bars of sloping roof windows or Connection from the roof surface of outstanding components such as chimneys or walls can be used.

The ventilation band can be made of plastic or metal, in particular aluminum, or of a composite of plastic and metal and can be coated either on one side or on both sides with the same or different colors.

In addition to the use of the ventilation band on the vented eaves connection, on the ridge or on the ridge, the design according to the invention provides further possible uses, such as use as a cleaning angle or as a ventilated connection of wall cladding, such as in window reveals, on the house base and for gable cladding.

The drawing shows two preferred exemplary embodiments of the invention, which are explained in more detail below.

It shows

Fig. 1 shows a section of an inventive

Ventilation band for eaves in top view,

2 the ventilation band from FIG. 1 in the installed state on an eave in cross section,

Fig. 3 is a ventilation band for ridge or ridge in cross section and

Fig. 4 shows the ventilation band of Fig. 3 in the installed state on a ridge in cross section.

In Fig. 1 is a portion of a one-piece

160 mm wide and 1 mm thick ventilation band 10 made of aluminum with a 60 mm wide stretchable section 12 and a 100 mm wide section 14 which is rigid in the longitudinal and transverse directions shown. The stretchable section 12 is delimited from the rigid section 14 by a first bending line 18. The first bending line 18 is defined by 6 mm wide and 30 mm long elongated holes serving as through openings 20 for gutters. In the rigid section 14 is a second

Bending line 22 and a third bending line 24 are provided, which extend in the longitudinal direction and are formed by 5 mm wide and 25 mm long slots 26 and 28 respectively. The stretchable section 12 has transversely extending 1 mm wide and arranged in rows offset by half its length

20 mm long elongated holes 30 with 1 mm wide transverse webs 32 and 1.5 mm wide longitudinal webs 34. In the rigid section 14, longitudinally and transversely parallel square holes 36 with a side length of 4 mm are provided with longitudinally extending 2 mm wide longitudinal bars 38 and transverse 2 mm wide transverse bars 40. The rigid section 14 is on its outer Edge 42 delimited by an unperforated 6 mm wide edge section 44 and divided by the bending lines 18, 22, 24 into three longitudinal sections 46, 48, 50.

FIG. 2 shows a ventilation band 10 from FIG. 1 with a stretchable section 12 and a section 14 which is rigid in the longitudinal and transverse directions in the state installed on an eaves structure 52. The third subsection 50 of the rigid section 14 of the ventilation band 10 is fastened on an eaves-side rafter end 54 with eaves formwork 56 and drip plate 58 and covered by an underlay 60, a counter-batten 62, a roof batten 64 and an eaves batten 66. The sarking membrane 60, the counter batten 62, the roof batten 64 and the eaves batten 66 are clad on the eaves side by the first and second sub-sections 46, 48 of the rigid section 14 of the ventilation band 10 bent by 90 ° at the third bending line 24 to a roof covering plate 68. The through the

Passage openings 20 formed first bending line 18 runs immediately above and along the eaves slat 66 the passage openings 20 a gutter 70 is guided. The stretchable section 12 which directly adjoins the first bending line 18 formed by the through openings 20 is formed with longitudinal stretching closely to the underside contour of the roof covering plates 68 covering the eaves structure 52.

FIG. 3 shows a 280 mm wide ventilation band 110 for a ridge or ridge in cross section, in the left half of FIG. 3 in the delivery state, in the right half in the unfolded state. The ventilation band 110 is made of 0.7 mm thick expanded aluminum. On both sides of a 100 mm wide section 112 which is rigid in the longitudinal direction, sections 114, 116 are arranged to the left and right in the longitudinal and transverse directions. On the edges of the rigid

Section are arranged left and right in the longitudinal direction stiffeners 118, 120 made of hard PVC tape. Below the stiffeners 118, 120, the stretchable sections 114, 116 are folded in a zigzag with two bending lines 122, 124, 126, 128 each running in the longitudinal direction of the ventilation band.

The stretchable section 114 shown in the delivery state is folded back along the first bending line 122 over a width of 35 mm by 180 ° to the longitudinal axis of the ventilation band and, after being folded again, runs through the second bending line 124 over a width of 65 mm to the left again Outer edge 130 of the ventilation band 110. While the stretchable section 114 lies flat on adjacent brims of roofing panels, the right outer edge 132 of the stretchable section 116 can be adapted to fit as a result of the zigzag fold, as shown in the right half of FIG. 3 Water course of a strongly profiled roof covering plate are angled perpendicular to the level of the ventilation band 110. The material is stretched lengthways to adapt to the longer length of the contour. Takes between the third and fourth bending lines 126 and 128 and the right outer edge 132 the material seen in cross-section an inclined position. The region of the stretchable section 116 which is close to the right outer edge 132 can be molded onto a roof covering plate to be covered parallel to the surface thereof.

The ventilation band 110 shown in FIG. 3 is provided over its entire width with a cover 134 made of waterproof impregnated air-permeable knitted fabric. This cover 134 is placed around the outer edges 130, 132 and glued to the stretchable sections 114, 116 in the edge regions. Due to its elasticity, the cover 134 always takes up the smallest area between the rigid section 112 and the outer edges 130, 132. Therefore, the ventilation band on the ridge or ridge always provides a smooth image from the outside.

In FIG. 4 the ventilation band 110 from FIG. 3 is shown in cross-section in the installed state on a ridge. The rigid area rests on a ridge batten 136 and is covered by a ridge pan 138. The ridge batten 136 is fastened by means of a ridge batten holder 140 to two rafters 142, 144 leading to the eaves on both sides. The rafters 142, 144 carry battens 146, 148, on which profiled roofing sheets 150, 152 are placed. The cross section shown in FIG. 4 leads through the water courses of the roof covering plates 150, 152. The stretchable sections 114, 116 of the ventilation band 110 are molded onto the contour of the surface of the roof covering plates 150, 152. The stiffeners 118, 120 prevent the rigid section 112 from bending in the region of the watercourses.

Claims

Patent claim ventilation band

1. ventilation band (10; 110) for ventilating an eaves, a ridge or a ridge of a roof, with at least one profiled to the contour

Roof covering plates can be formed and the longitudinal direction of the ventilation band (10; 110) stretchable section (12; 114, 116) and a parallel to this, in the longitudinal direction of the ventilation band (10; 110) substantially rigid section (14; 112), characterized in that the stretchable Section (12; 114, 116) is provided with elongated holes and / or slots (30) which run in the transverse direction of the ventilation band (10; 110) and are arranged in mutually offset rows, and the elongated holes and / or slots (30) in each case one row are separated from one another by at least one longitudinal web (34) running in the longitudinal direction of the ventilation band (10; 110).

2. Ventilation tape according to claim 1, d a d u r c h g e k e n n z e i c h n e t that a grid is provided in the rigid section (14; 112).

3. Ventilation band according to claim 1 or 2, characterized in that it is designed as a ventilation band (10) for an eaves and has passage openings (20) for gutters (70) in a linear arrangement in the region between the stretchable section (12) and rigid section (14) are arranged.

4. Ventilation band according to one of claims 1 or 2, d a d u r c h g e k e n n z e i c h n e t that this is designed as a ventilation band (110) for a ridge or a ridge and on both sides of the rigid

Section (112) each has an extensible section (114, 116).

5. Ventilation band according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t that at least one stiffening (118, 120) is provided in the rigid section (112).

6. Ventilation band according to one of claims 1 to 5, characterized in that in and / or adjacent to the rigid section (14; 112) at least one predetermined bending line (18, 20, 22, 24; 122, 124, 126, 128) is provided is.

7. Ventilation band according to claim 6, d a d u r c h g e k e n n z e i c h n e t that a predetermined bending line (18, 22, 24) is formed by a row of holes with elongated holes (26, 28) arranged in the longitudinal direction of the ventilation band (10).

8. Ventilation band according to claim 6, d a d u r c h g e k e n n z e i c h n e t that material with reduced bending stiffness is provided in the region of a predetermined bending line.

9. Ventilation band according to claim 6, d a d u r c h g e k e n n z e i c h n e t that material with a reduced thickness is provided in the region of a predetermined bending line.

10. Ventilation band according to claim 6, characterized in that a joint is provided in the region of a predetermined bending line.

11. Ventilation band according to one of claims 1 to 10, d a d u r c h g e k e n n z e i c h n e t that it is folded in the stretchable section (114, 116) in a zigzag with bending lines (122, 124, 126, 128) running in the longitudinal direction of the ventilation band (110).

12. Ventilation band according to one of claims 1 to 11, characterized in that at least in the stretchable section (12) or the stretchable sections (114, 116) a cover (134) made of longitudinally and transversely stretchable air-permeable material with very small openings such as a knitted fabric or a fleece is provided.

13. Ventilation band according to one of claims 1 to 12, d a d u r c h g e k e n n z e i c h n e t that at least in the stretchable section (12) or the stretchable sections (114, 116) is provided a cover (134) made of longitudinally and transversely stretchable waterproof material.

14. Ventilation tape according to one of claims 1 to 13, d a d u r c h g e k e n n z e i c h n e t that a strip of longitudinally stretchable self-adhesive material is provided on the edge of the ventilation band (10; 110) on the side facing the roofing panels (68; 150, 152).