DE29908614U1 - Material strips for connecting a flat, first roof component to a second roof component - Google Patents

Description

Patent Attorneys Wenzel & Kalkoff

PO Box 2448 * 58414 Witten * 02302/914550

Registration documents:

Connection strips for roof windows

Ewald Dörken AG

58313 Herdecke

Attorney file:

05723.8

- 1 (05723.8)

Description

The invention relates to a material strip for connecting a flat, first roof component to a second roof component, which is arranged in the region of an opening in the first roof component, and to an apron having such a material strip, in particular for connecting a roof window to an underlayment or an airtight layer of a pitched roof.

The first, flat roof construction element can be an underlayment membrane on the outside of a roof, which is attached to the roof sheathing, or an airtight layer on the inside of a roof, which is formed, for example, by plasterboard as an interior cladding.

The second roof component can be the base frame of a skylight, the masonry of a chimney or the masonry of a dormer window. In all cases, the first, flat roof component has an opening in the area of which a second roof component is arranged.

For connecting a roof window to an underlay sheet, it is known to provide tabs of the underlay sheet when making the opening in the underlay sheet for the roof window, which can be attached to the sides of the base frame of the roof window, for example by gluing or tacking. In particular, the base frame of the roof window is usually arranged above the plane of the underlay sheet, so that the tabs can be positioned vertically with respect to the plane and thus with the side surfaces of the

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base frame to the system.

This form of connection of a roof window to an underlayment has the disadvantage that in the area of the corners of the base frame of the roof window, tightness against water ingress from the outside cannot be guaranteed, since in the area of the corners there is no possibility of realizing a watertight connection between adjacent flaps of the underlayment.

In order to improve the connection of a roof window to an underlay sheet, it is known from DE 94 13 97 0 Ul to provide a so-called connecting apron, which is a component designed as a folded cut and prefabricated for a given window size. The connecting apron essentially consists of a rectangular strip of material to be applied to the underlay sheet, the inner surface of which is adapted to the size of the roof window to be connected. In addition, the connecting apron has a 0 installed state of the apron perpendicular to the underlay sheet.

along the side surfaces of the roof window, which encloses the side surfaces of the base frame of the roof window. The collar can be attached to the base frame.
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This connecting apron also ensures that the corners of the base frame of a roof window are securely sealed. However, a disadvantage of this known design is that the connecting apron must be made to measure for each window size.

Based on this, the invention is based on the object of creating a material strip and an apron of the type mentioned at the beginning, which can be used universally for connection purposes on roofs and is easy to handle, whereby a

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Tightness between the roof components to be connected to one another is ensured to a high degree.

The object is achieved by a material strip for connecting a flat, first roof component to a second roof component, which is arranged in the region of an opening in the first roof component, wherein the material strip is straight and has at least two adhesive strips running in its longitudinal direction, substantially parallel to one another and arranged at a distance from one another.

Due to its design with two adhesive strips, such a strip of material makes it possible, for example when connecting a roof window to an underlayment, to stick one adhesive strip to one side of the base frame of the roof window, while the second adhesive strip is stuck to the roof underlayment. This can be done on all sides of the base frame.

The strip of material allows the production of a tight apron around the roof window to be connected, as described later using a method for producing an apron.

Because the material strip can be cut to the desired length, it can be used universally to connect the first roof component to the second roof component. Examples of applications include:

Connection of a roof underlay to a roof window, connection of a roof underlay to the masonry of a dormer or chimney, connection of a base frame of a roof window to an interior cladding, for example a

Airtight layer that can be formed by plasterboard or a foil.

When used on the outside of a roof, water ingress between the first, flat roof component and the second roof component is effectively prevented, while when used on the inside of the roof, moisture diffusion or convection is prevented.

The second roof component arranged in the area of the opening of the first, flat roof component preferably has a polygonal outer side surface with straight sides for the attachment of the adhesive strip assigned to it, the side surface being arranged essentially perpendicular to the plane of the flat, first roof component. This is the case, for example, with the base frame of a skylight as the second roof component. If the second roof component is to be connected to an airtight layer or an inner lining of a roof as the first roof component, the side surface of the first roof component facing the inside of the house (e.g. base frame of a skylight) is preferably polygonal and flat. The adhesive strip assigned to the second roof component can then be attached to the surface of the second roof component facing the inside of the house, while the adhesive strip assigned to the first roof component is attached to the airtight layer from the inside. An even more reliable adhesive connection between the adhesive strip assigned to the second roof component and the side of the second roof component facing the inside of the house is achieved if the second roof component has a groove on its side facing the inside of the house, into which the adhesive strip assigned to the second roof component can be inserted. Such grooves are already present in most designs of currently available roof windows.

available. The adhesive strip assigned to the second roof component can also be attached to the base frame of a roof window as a second roof component to the inside surface of the base frame. In principle, the peripheral surface of the second roof component can also be slightly rounded. If the material strip is to be used on second roof components with a rounded peripheral surface, a corresponding material selection can be made for the material strip. The material to be used should then be stretchable in the longitudinal direction of the material strip together with the adhesive strip.

For the intended use of the material strip, a thickness of 1 mm is generally sufficient. In principle, the material strip should be as thin as it can withstand the stresses it can withstand during installation and when used as a connecting element.

In the case of non-ventilated roofs, it is advantageous if the material strip is made of a vapor-permeable material to allow moisture to escape, for example from the roof sheathing and the interior of the room. In contrast, in the case of ventilated roofs and in the case of the connection of the base frame of a roof window to an airtight layer, the material strip can be airtight.

Preferably, the distance between the adhesive strips is at least 5 cm. The distance between the adhesive strips should always be chosen so that a convenient connection can be made between the first and second roof construction elements. In principle, the distance when connecting the base frame of a roof window to an airtight layer will be greater than when connecting the base frame to a roof underlay.

A material strip is preferred in which several

further adhesive strips are provided which are arranged essentially perpendicular to the longitudinal direction of the material strip. The further adhesive strips running transversely to the longitudinal direction of the material strip allow for even more reliable sealing of corner areas and should be provided at such a distance that, based on the example of a base frame of a roof window, several further adhesive strips are present along each side of the base frame.

The invention also relates to an apron for connecting a first, flat roof component to a second roof component which is arranged in the region of an opening in the first roof component, wherein the apron has a plurality of straight, adjoining material strips which have adhesive strips which run essentially parallel to one another and are arranged at a distance from one another, one of which is assigned to the first roof component and the other to the second roof component, and the adhesive strips of two adjacent material strips assigned to the second roof component are fastened to one another in their transition region.

For example, four strips of material can be arranged to form a rectangular shape of the apron when viewed from above. In this case, connecting a roof underlay to the square base frame of a skylight is particularly easy. It is within the specialist's area of expertise to dimension the individual strips of material in their length 0 so that the adhesive strips of two adjacent strips of material of the apron assigned to the second roof component, in this case the skylight, can be attached to one another in their transition area. A reliable seal is also achieved at the corners of the base frame.

The apron can be manufactured according to the following process, which is not the subject of the invention:

a) cutting four straight strips of material having adhesive strips running substantially parallel to one another and arranged at a distance from one another, one of which is associated with the first roof component and the other with the second roof component, corresponding to the four sides of the second roof component, providing a respective overhang of the strips of material at the corners of the second roof component;

b) bonding the respective adhesive strips assigned to the first roof component to the first roof component; and

c) bonding the respective adhesive strips associated with the second roof construction element to the second roof construction element; and

d) Gluing the overlapping portions of the material strips together using the adhesive strips assigned to the second roof component.

The arrangement of the adhesive strips on the material strips depends on the specific application. When connecting a base frame of a roof window to a roof underlay or an airtight layer, the two adhesive strips can only be provided on one side of the material strip. On the other hand, it is also possible for one adhesive strip to be provided on each side of the material strip used.

Embodiments of the invention are described below with reference to

The drawings explain this in more detail. They show:

Fig. 1 a piece of a material strip for connecting a base frame of a roof window to an underlayment;

Fig. 2 a piece of a modification of the material strip of Fig. 1 with additional adhesive strips running perpendicular to the longitudinal direction of the material strip;
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Fig. 3 is an exploded, schematic view of a right angle of an apron made from the material strip according to Fig. 2 for connecting a base frame of a roof window to an underlayment; and

Fig. 4 is a schematic sectional view of the transition area between the base frame of a roof window and the adjacent roof area with an underlayment and an airtight layer.

The pieces of material strips 1, 2 made of vapor-permeable or vapor-retardant material shown in Fig. 1 and Fig. 2 differ in that in Fig. 1, adhesive strips 3, 4 running parallel to one another are arranged on a common side of the material strip 1, while in Fig. 2, further adhesive strips 5 are provided which run perpendicular to the adhesive strips 3, 4, with all adhesive strips 3, 4, 5 being arranged on one side of the material strip 2. To store the material strips 1, 2, the adhesive strips 3, 4, 5 can be covered with a release liner.

Fig. 3 shows how a right angle can be made from the material strip 1 according to Fig. 2, as in the case of

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for example, to seal a corner of a base frame G of a roof window against an underlayment U.

First, two pieces 11, 12 are cut from the material strip 1, which are to be connected to each other.

As can be seen in Fig. 3, the section 11 is folded along its longitudinal center line at a right angle so that the shape of the section 11 can be adapted for attachment both to the roof underlay U and to the side surface of the base frame G of a roof window.

The section 12 is folded essentially in the same way as the section 11, but the end of the section 12 associated with the section 11 is specially designed.

First, the end point 13 0 of the longitudinal center axis of the section 12 assigned to the section 11 is moved so that it falls on the edge of the section of the section 12 facing the roof underlayment U. This results in an overlap of material of the section 12 in the area 14. The section 12 is then folded along the line 15 in Fig. 1 so that a right angle is formed for the section 12 in relation to the line 15. The sections 11 and 12 can then be brought into contact with one another (see arrow A in Fig. 3), whereby the adhesive strips 3 assigned to the base frame G of the roof window come to rest on one another and thus cause the sections 11, 12 to be attached to one another.

The procedure described for producing a right angle from pieces of the material strip 1 can be carried out for each corner of a roof window, whereby

When measuring the length of the sections, an overhang must be provided so that the adhesive strips 3 assigned to the base frame G of the roof window can be attached to one another. In Fig. 3, the overhang is approximately half the width of the sections 11, 12.

Fig. 4 shows the positions of the material strip both for the case of a connection of the base frame G of a roof window to an underlayment U and for the case of a connection of the base frame G to an airtight layer L.

In the first-mentioned application, the material strip 2 runs from the base frame G, to which the adhesive strip 3 is assigned, between a counter batten and a roof batten to the underlayment sheet U. The underlayment sheet U is arranged in the usual way on the outside of the insulation material.

When connecting the base frame G to the airtight layer L, which is located on the inside of the insulating material with which the area between the rafters is filled, the adhesive strip 3 assigned to the base frame G is glued into a groove 13 of the base frame G. The groove 13 runs around the side of the base frame G facing the inside of the house. An adhesive strip 6, which is comparable in function to the adhesive strip 4, is assigned to the airtight layer L and is attached to it. This results in the material strip 2 running from the groove 13, along the insulating material between the rafters and the base frame G to the airtight layer L, which results in an essentially L-shaped configuration for the material strips 2.

Claims (8)

1. Material strip for connecting a flat, first roof component to a second roof component which is arranged in the region of an opening in the first roof component, wherein
the material strip ( 1 ; 2 ) is straight and has at least two adhesive strips ( 3 , 4 , 6 ) running in its longitudinal direction, substantially parallel to one another and arranged at a distance from one another. 2. Material strip according to claim 1, wherein the material strip ( 1 ; 2 ) consists of diffusion-open material. 3. Material strip according to claim 1, wherein the material strip ( 1 ; 2 ) is airtight. 4. Material strip according to one of claims 1 to 3, wherein the distance between the adhesive strips ( 3 , 4 ; 5 , 6 ) is at least 5 cm. 5. Material strip according to one of claims 1 to 4, in which a plurality of further adhesive strips ( 5 ) are provided, which are arranged substantially perpendicular to the longitudinal direction of the material strip ( 2 ). 6. Apron for connecting a first, flat roof component to a second roof component, which is arranged in the region of an opening in the first roof component,
characterized in that
the apron comprises a plurality of straight, adjoining material strips ( 1 ; 2 ) which have adhesive strips ( 3 , 4 , 6 ) running essentially parallel to one another and arranged at a distance from one another, one of which is associated with the first roof component (U) and the other with the second roof component (G),
wherein the adhesive strips of two adjacent material strips ( 1 ; 2 ) assigned to the second roof component (G) are fastened to one another in their transition region. 7. Apron according to claim 6, characterized in that four material strips ( 1 ; 2 ) are arranged to form a rectangular shape of the apron when viewed in plan. 8. Apron according to one of claims 6 or 7, characterized in that the material strips ( 1 ; 2 ) are permeable to diffusion.