EP3168403B1 - Combined sealing and insulation system - Google Patents

Description

The invention relates to a sealing system for connecting a window sill to a frame or a structure. In addition, the invention relates to an insulation system for providing insulation below a window sill. The invention also relates to a window sill arrangement and a method for connecting a window sill to a window frame and a structure.

In particular, the invention relates to a combined insulation and sealing system for metal window sills with a second water-bearing level under the window sill.

External window sills are typically designed in such a way that the surface water draining away from the window and facade is controlled. The window sill must be connected to the frame and the structure using a suitable sealing system.

Especially when the window sill is not rainproof, a second water-bearing level is created under the window sill. A trough-shaped sealing film is usually used for this purpose, the film corners being folded and glued to one another to seal the corner regions.

If thermal insulation is to be introduced under the window sill, there is a risk that moisture, for example water condensed on the underside of a metal window sill, will result in the damping of the insulation material, which would result in a loss of the insulation effect. In such cases the Sealing film should be installed above the insulation to protect the insulation against moisture.

A sealing tape that is attached directly to the structure without insulation is in DE 202 21 781 U1 described.

Out DE 203 15 683 U1 the use of an insulation / filler combined with a barrier film is known, which is arranged below a window sill in order to achieve a moisture-tight and insulating seal. The insulation / filler is clamped in the space between the inner masonry and the outer masonry, so that there is a stable base for the installation of the window sills and it is prevented that mortar used in the installation of the window sills falls into the space.

An object of the present invention is not only to simplify the insulation or sealing process in the latter cases, but at the same time to prevent moisture from penetrating between the insulation element and the structure.

This object is achieved by a sealing system according to claim 1 or an insulation system according to claim 7 or a window sill arrangement according to claim 8 or a method according to claim 9. Advantageous embodiments of the invention are specified in the subclaims.

The sealing system according to the invention for connecting a window sill to a window frame or a building structure comprises a sealing film used to form a water and / or airtight layer, an insulating element arranged on one side of the sealing film and extending in the longitudinal direction of the film and connected to the sealing film to insulate a interspace between the window sill and the building structure, as well as at least one adhesive element arranged on the same side of the sealing film as the insulating element and extending parallel to the insulating element in the longitudinal direction of the film and connected to the sealing film for fastening the sealing system to the frame and / or the building structure and is characterized by a Formation of a water and / or airtight layer serving second sealing film, which has a first section and an adjoining second section, the first section being connected to the first sealing film and the second section being designed to form a joint between the structure and the To seal the insulation element.

The core idea of the invention is to provide a combined sealing and insulation system with which the area between the window sill and the structure or frame is sealed in a single work step and at the same time insulated. This ensures in a particularly simple manner that the insulation absorbs moisture and consequently loses the insulation effect.

The particularly simple handling and use of the sealing or insulation system according to the invention means that the laying of insulation material, which has hitherto been used frequently in practice, is abandoned on a waterproof film covering the structure and the frame and instead the sealing film is properly laid on the insulation , Due to the structure of the sealing system according to the invention, laying on the insulation is inevitable and therefore cannot be forgotten or carried out incorrectly or inadvertently or with ignorance of the correct laying technique.

The main advantage over the solutions known from the prior art is that the novel use of a second sealing film used to form a water and / or airtight layer prevents moisture from penetrating between the insulating element and the building structure, as long as the building structure has not yet is plastered.

Due to the combination of sealing and insulating material according to the invention, the system can be viewed not only as a sealing system with integrated insulation, but also as an insulation system with integrated sealing.

Such an insulation system according to the invention for providing insulation below a window sill correspondingly comprises an insulation element for insulation of an intermediate space between the window sill and a structure or a frame, an arranged on one side of the insulation element, connected to the insulation element, at least on one side of the insulation element an outer edge of the insulating element protruding sealing film to form a water and / or airtight layer, and at least one arranged on the same side of the sealing film as the insulating element, parallel to the insulating element in Longitudinal film extending adhesive element connected to the sealing film for fastening the insulation system to the frame and / or the structure and is characterized by a second sealing film used to form a water and / or airtight layer, which has a first section and an adjoining second section , wherein the first section is connected to the first sealing film and the second section is designed to seal a joint between the structure and the insulating element.

If, in the following, we are talking about a sealing or insulation system, it does not mean that this system is designed exclusively for sealing purposes or for insulation purposes is. Instead, it always means the combined sealing and insulation system, which, depending on the point of view, can be viewed as a sealing system with integrated insulation or as an insulation system with integrated sealing.

The advantages and configurations explained in connection with the sealing system, in particular the combinations of features and embodiments defined by the dependent patent claims, also apply mutatis mutandis to the insulation system and vice versa. The advantages and configurations explained in connection with the sealing and insulation systems also apply mutatis mutandis to the window sill arrangement and vice versa. Finally, the advantages and refinements explained in connection with the sealing and insulation systems or the window sill arrangement also apply mutatis mutandis to the method according to the invention and vice versa.

The window sill arrangement resulting from the use of the sealing or insulation system according to the invention comprises, in addition to the sealing system or the insulation system, a window frame, a structure and a window sill connected to the frame and to the structure, the sealing film with the at least one adhesive element on the frame and / or is attached to the structure so that it forms a water and / or airtight layer between the window sill on the one hand and the window frame or the building body on the other hand, and wherein the insulating element on the side of the sealing film opposite the window frame in a space between the window sill and the structure or the frame is arranged.

The inventive method for connecting a window sill to a frame or a building is characterized in that first a sealing system or an insulation system according to the present invention is attached to the frame and / or the structure by the sealing film is attached to the frame and / or the structure with the at least one adhesive element, so that it has a water and / or airtight layer over the frame or the structure forms and the insulation element between the sealing film on the one hand and the frame or the structure is arranged on the other hand, and then the window sill is mounted directly on the attached sealing system or insulation system.

When the window sill is installed, the insulation element does not necessarily completely fill the space between the window sill and the structure or the frame. However, it is preferably against the structure and the frame.

In the case of beveled window sills, as they are mostly used on the outside of buildings, as well as horizontal window sills, as they are in use on the inside, the insulating element can be made cuboid from a compressible material. For example, it can be a soft foam part, such as a single-layer or multi-layer insulation mat, which, if necessary, is compressed by the installation of the window sill.

In another embodiment of the invention, the insulation element is a hard, that is to say not or only insignificantly compressible, molded part, which is already adapted to the shape of the space between the window sill and the structure or frame. In the case of beveled window sills, the insulation element can then already have the shape of a beveled cuboid or a wedge shape. The molded part can be machined, for example Process can be made from a cuboid starting body or it can be an extruded molded part.

In principle, any type of insulation material can be used to manufacture the insulation element, e.g. B. glass wool, foam, polystyrene or the like.

The at least one adhesive element used in the invention is used to fasten the sealing or insulation system in a step preceding the installation of the window sill. After the system has been attached to the frame or the structure, both the required sealing and the desired insulation are available. When installing the window sill afterwards, the fitter does not have to take this into account.

In a particularly preferred embodiment of the invention, the system has two adhesive elements. The first adhesive element is arranged next to the insulation element. In other words, it is arranged on the same side of the sealing film as the insulating element, extends parallel to the insulating element in the longitudinal direction of the film and is connected to the sealing film. This first adhesive element is used to attach the system to a frame. The second adhesive element is used to attach the system to the structure. It is also attached next to the insulation element and it is attached to the same side of the sealing film as the first adhesive element. However, it is arranged on the side of the insulating element opposite the first adhesive element. In other words, the insulating element is positioned between the first adhesive element and the second adhesive element.

If the second adhesive element is designed to fasten the sealing or insulation system to a frame, this means that it can be fastened or fastened to a structural element other than the structure. In other words, it can also be a window strip or a window sill connection profile, etc., instead of a window frame. In this respect, the term window frame is not to be understood as restricting the actual component of a window frame. Instead, this term encompasses all components known to a person skilled in the art in addition to the structure in connection with a window arrangement, to which a sealing or insulation system can reasonably be attached or is attached for producing a sealed and insulated window sill arrangement.

The adhesive elements are preferably adhesive tapes. Self-adhesive tapes can be used particularly advantageously. However, one of the adhesive elements or both adhesive elements can also consist of film adhesive or an adhesive, in particular for fastening the sealing film to the structure. The use of other adhesives is also possible.

If the insulating element and the at least one adhesive element are spaced apart from one another on the sealing film in such a way that an intermediate space is used between the insulating element and the at least one adhesive element for assembly purposes, the sealing film can be variably adapted to the structural conditions during the installation of the sealing system. For example, the sealing film can be bent or kinked or folded over in the interspaces and be adapted in this way to the frame or the building structure and / or the insulation element.

In a preferred embodiment of the invention, which thereby provides a particularly good seal, there is a seal on the side of the sealing film opposite the adhesive element Arranged parallel to the insulation element in the longitudinal direction of the film and connected to the sealing film sealing element for sealing the sealing system on the window sill. This sealing element consists, for example, of butyl rubber or it is a "compression tape", ie a pre-compressed joint sealing tape, in particular based on a polyurethane foam.

The outer edge of this sealing element preferably closes with the outer edge of the sealing film. Likewise, the outer edges of the adhesive elements used are preferably flush with the outer edges of the sealing film. As a result, undesired gaps or cavities do not form at the edges of the sealing film, into which moisture can penetrate or in which moisture could collect.

It is particularly advantageous if the sealing or insulation system, more precisely the sealing film provided with the insulating element as the main element of the system according to the invention, is a prefabricated web, preferably a (continuous) web already prefabricated in the factory. This can be pre-assembled for transport to the construction site, namely be cut into pieces of defined length. Alternatively, it can also be roll goods, i.e. webs that can be rolled up into a roll if required. The sheets are assembled at the construction site after they have been prefabricated, in particular taking into account the desired tub shape of the water- and / or airtight layer, and cut to the width of the parapet.

In a further embodiment of the invention, which is used in particular in the case of outer window sills, it is proposed to add a further element to the sealing system, namely a corner element which interacts with the sealing film. Thus, in addition to the sealing film / insulating element combination described in detail above, the sealing or insulation system preferably comprises at least one, but preferably, for essentially completely sealing and insulating a surface lying between the window sill and the frame or building structure, in particular for sealing and insulating the parapet at least two trough-shaped, assembly corners to form a water-bearing level in the corner region of the window sill. These corner elements are designed for attachment to the sealing film and are preferably self-adhesive for this purpose. They prevent water from getting inside through the side ends of the window sill. The corner elements advantageously consist of a waterproof, cross-laminated film material with high tear strength. The basic material for the assembly corners is, for example, a combination of materials made from butyl rubber and highly tear-resistant HDPE film. To achieve the desired tightness against driving rain, it is particularly advantageous if the corner elements have a height of at least 6 centimeters, preferably a height of at least 10 centimeters.

This enables corner connections to be made quickly, inexpensively and permanently tight. A complex and error-prone laying of sealing films that extend beyond the actual length of the parapet with subsequent folding and gluing of the film corners to form a tub lining the corner region of the window sill, as is known from the prior art, is no longer necessary. The folding and gluing steps are eliminated. It is only necessary to pull off the covering material from the preferably fully adhesive mounting corner and to glue the mounting corner onto the sealing film which has already been laid.

The invention is applicable not only to metal window sills, but also to window sills made of other materials. In addition, the invention can be used not only for outer window sills, in which cases the sealing system provides a water-bearing level running below the window sill, but also for inner window sills. Instead of a waterproof layer in the case of outer window sills, an airtight layer is provided in the case of inner window sills by using a suitable sealing film.

The invention can also be used if the window sill is not attached directly to the masonry, but to a full thermal insulation system or another insulation system or the like attached to the masonry. The full thermal insulation system etc. is considered in this case as part of the structure in the sense of the invention.

Fig. 1

eine Draufsicht auf eine kombinierte Dicht- und Dämmbahn (erste Ausführungsform),

Fig. 2

einen Schnitt durch eine kombinierte Dicht- und Dämmbahn (erste Ausführungsform),

Fig. 3

einen Schnitt durch eine Fensterbankanordnung (erste Ausführungsform),

Fig. 4

eine perspektivische Ansicht eines Eckbereiches mit einer verlegten Montageecke (erste Ausführungsform),

Fig. 5

einen Schnitt durch eine kombinierte Dicht- und Dämmbahn (zweite Ausführungsform),

Fig. 6

einen Schnitt durch eine Fensterbankanordnung (zweite Ausführungsform),

Fig. 7

eine perspektivische Ansicht eines Eckbereiches mit einer verlegten Montageecke (zweite Ausführungsform).

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Here show:

Fig. 1

a plan view of a combined sealing and insulation sheet (first embodiment),

Fig. 2

a section through a combined sealing and insulation sheet (first embodiment),

Fig. 3

3 shows a section through a window sill arrangement (first embodiment),

Fig. 4

2 shows a perspective view of a corner area with an installed installation corner (first embodiment),

Fig. 5

a section through a combined sealing and insulation sheet (second embodiment),

Fig. 6

2 shows a section through a window sill arrangement (second embodiment),

Fig. 7

a perspective view of a corner area with an installed installation corner (second embodiment).

The figures do not show the invention to scale, but only schematically and only with its essential components. The same reference numerals correspond to elements of the same or comparable function.

A section of a combined sealing and insulating continuous web 1 according to a first embodiment of the invention is shown in FIG Fig. 1 shown. The web 1 comprises a sealing film 2 and an insulating element 5 which is arranged on the underside 3 of the sealing film 2 and extends in the longitudinal direction 4 of the film and is connected to the sealing film 2 and which in the assembled state insulates an intermediate space 6 between a window sill 7 on the one hand and a structure 8 and a frame or a window sill connection profile 9 on the other hand. The insulation element 5 is a hard molded part, adapted to the shape of the space 6 between the window sill 7 and the building 8 or the window sill connection profile 9, in the form of a beveled cuboid made of a suitable insulation material, for example polystyrene. The lower side 20 of the insulating element is attached to the sealing film 2.

In addition, the web 1 comprises two arranged on the underside 3 of the sealing film 2, extending parallel to the insulating element 5 in the film longitudinal direction 4, with the sealing film 2 connected adhesive elements 11, 12. These are used in the assembled state for fastening the sealing film 2 and thus the entire sealing system 10 on the window sill connection profile 9 and the structure 8. The adhesive elements 11, 12 are self-adhesive tapes.

The first adhesive element 11, which is used to fasten the system 10 to the window sill connection profile 9, is arranged on the underside 3 of the sealing film 2 next to the insulating element 5, extends in a strip-like manner parallel to this in the film longitudinal direction 4 and is connected to the sealing film 2. The second adhesive element 12, which is used to fasten the system 10 to the structure 8, is also attached to the underside 3 of the sealing film 2, but is arranged on the side of the insulating element 5 opposite the first adhesive element 11. It also extends in a strip shape parallel to the insulating element 5 in the longitudinal direction 4 of the film and is connected to the sealing film 4. The strip-shaped insulating element 5 located in the middle part of the web 1 is thus positioned between the first adhesive element 11 and the second adhesive element 12. The outer edges 13, 14 of the adhesive elements 11, 12 used terminate with the outer edges 15, 16 of the sealing film 2.

The insulating element 5 and the two adhesive elements 11, 12 are spaced apart from one another on the sealing film 2 such that there is a space 17, 18 between the insulating element 5 on the one hand and the adhesive elements 11, 12 on the other. In other words, the insulating element 5 and the adhesive elements 11, 12 are placed on the sealing film 2 at a distance from one another in such a way that the sealing film 2 is bent or kinked at these points 17, 18 and can thus be adapted to the structural conditions.

On the upper side 19 of the sealing film 2 opposite the first adhesive element 11 is as shown Fig. 2 It can be seen that a strip-shaped sealing element 21, which extends in the longitudinal direction 4 of the film and extends in the longitudinal direction 4 of the film and is connected to the sealing film 2, is arranged in the form of a compression tape, which in the assembled state serves to seal the sealing system 10 on the window sill 7. The outer edge 22 of the sealing element 21 terminates with the outer edge 15 of the sealing film 2.

Before assembly on the construction site, the web 1 is cut to the desired length, which depends on the width of the parapet 34.

In Fig. 3 shown is a window sill arrangement attached to the outside of a building. Between a window (not shown) and a building, here a plastered wall 8, a window frame or a window sill connection profile 9 is arranged, which serves to couple the window to the building 8. Between the connecting profile 9 and the structure 8 is to Closing the component joint 25 introduced a sealing or insulating foam 26.

As in Fig. 3 illustrated, the insulation element 5 is placed in its final assembly position, in which it rests with its upper side 27 facing away from the sealing film 2 against the structure 8 and with its side surface 28 pointing in the direction of the first adhesive element 11 against the window frame or the window sill connection profile 9 and covers the component joint 25. Then the sealing film 2 is folded or folded in the space 17 between the first adhesive element 11 and the insulating element 5 in order to fasten the web section with the first adhesive element 11 to the window frame or window sill connection profile 9. Subsequently, the sealing film 2 is folded or folded twice in the space 18 between the insulating element 5 and the second adhesive element 12 in order to fasten the web section to the structure 8 with the second adhesive element 12. For this purpose, the intermediate space 18 between the insulating element 5 and the second adhesive element 12 essentially corresponds to the thickness of the insulating element 5 on its side 29 pointing in the direction of the second adhesive element 12.

In the example shown, the sealing film 2 advantageously does not reach the front edge 31 of the masonry 8, which is provided on the outside with a plaster layer 32, so that, in front of the front edge 16 of the sealing film 2 which closes with the second adhesive element 12, a compression tape is optionally available 33 can be set.

The water-bearing level formed by the sealing film 2 now covers the area of the parapet 34. Self-adhesive, prefabricated assembly corners 36 can then be used in the corner areas on which the frame or Window sill connection profile 9, window reveal 35 and parapet 34 meet, over which sealing film 2 that has already been laid is glued. The positioning of the mounting corners 36 is shown in Fig. 4 illustrated, only the insulation element 5 of the already installed system 10 is shown in the figure for reasons of clarity. The mounting corners 36 have essentially the same properties as the sealing film 2 connected to the insulating element 5. The side parts 38 of the mounting corners 36 which rest against the window reveal 35 or the window sill connection profile 9 have a height 39 of ten centimeters. The side parts 38 are glued to their respective substrates. In an advantageous embodiment of the invention, the side parts 38 are provided on the back with self-adhesive film or another suitable adhesive system.

When assembling the outer window sill 7, which is made of metal, it is connected in a suitable manner with its mounting end 37, the frame or the window sill connection profile 9 below, adjoining the sealing element 5 of the system 10 with the frame or the window sill connection profile 9, for example with the aid of screw connections (not shown).

The essential basic properties of the second embodiment of the combined sealing and insulating continuous web 1 correspond to the first embodiment described above. Therefore, only the differences between the first and the second embodiment will be discussed in more detail below. The essential features of the second embodiment result from the 5, 6 and 7 ,

As in Fig. 5 illustrated, an additional second sealing film 42 is provided, partially on the top 3 of the first Sealing film 2 is attached. The two sealing foils 2, 42 are preferably firmly connected to one another, for example via a suitable adhesive connection (not shown). The first sealing film 2 is connected via a third adhesive element 41 and the second sealing film 42 is connected to the underside 20 of the insulating element 5 via a fourth adhesive element 43. The second sealing film 42 is connected to the first sealing film 2 by a first section 46. In the area of the second side surface 29 of the insulating element, the second sealing film 42 detaches from the first sealing film 2, so that a second section 47 of the second sealing film 42 adjoining the first section 46 can be moved freely, independently of the first sealing film 2. The second section 47 has a fifth adhesive element 44 on its upper side corresponding to the upper side 3 of the first sealing film 2, with which the second section 47 bears against the second side surface 29 of the insulating element 5 and is glued to the insulating element 5.

This additional second sealing film 42, more precisely the second, "free" section 47 of this second sealing film 42 is now, as in FIG Fig. 6 illustrated, suitable for sealing the joint 40 between the parapet 34 of the masonry 8 and the insulation element 5.

Before applying the plaster, as in Fig. 6 Shown schematically with a broken line, preferably an additional fabric 45 is placed on the side of the second section 47 of the second sealing film 42 which is facing away from the masonry 8. The fabric 45 can be attached to the web 1 before the sealing system 10 is installed.

The application of the sealing foils 2, 42 differs from the first in this second embodiment of the invention Embodiment in that the two sealing foils 2, 42 are bent or folded in a different way after the insulating element 5 has been placed in its final assembly position, such as from Fig. 6 seen.

The sealing film 2 now advantageously extends not only to the front edge 31 of the masonry 8, but is also made so long that it also covers the plaster 32 in the final assembly state. As already described, the sealing film 42 also extends beyond the front edge 31 of the masonry 8 in order to allow the component joint 40 to be covered. As in Fig. 6 illustrated, the water-carrying plane formed by the sealing foils 2, 42 covers not only the area of the parapet 34, but also the component joint 40.

In Fig. 7 a perspective view of a corner area in a sealing system according to the second embodiment is shown again. The installation corner 36 is glued after laying the sealing films 2, 42 with their two side parts 38 both on the window reveal 35 and on the window sill connection profile 9, here in particular in the joint area 49 between the window sill connection profile 9 and the reveal 35, for which purpose the corresponding Side part 38 is suitably shaped in the joint area 49. The bottom part 48 of the assembly corner 36 is glued to the top 19 of the sealing film 2. After the assembly corner 36 has been glued, an additional corner plaster 50 is glued over the side part 38 of the assembly corner 36 and the front edge 31 of the masonry 8. For gluing, all the parts mentioned are provided on the back with self-adhesive film or another suitable adhesive system.

All of the features shown in the description, the following claims and the drawing can be essential to the invention both individually and in any combination with one another. For example, a sealing element 21 can also be used in the second embodiment of the invention, etc. etc.

LIST OF REFERENCE NUMBERS

1

train

2

sealing film

3

Underside of the sealing film

4

Slide longitudinally

5

insulating element

6

gap

7

windowsill

8th

Building structure, wall

9

Window sill connection profile, window frame

10

sealing system

11

first adhesive element

12

second adhesive element

13

Outer edge of the first adhesive element

14

Outer edge of the second adhesive element

15

first outer edge of the sealing film

16

second outer edge of the sealing film

17

first space

18

second space

19

Top of the sealing film

20

Bottom of the insulation element

21

sealing element

22

Outer edge of the sealing element

23

(free)

24

(free)

25

component joint

26

insulating foam

27

Top of the insulation element

28

first side surface of the insulation element

29

second side surface of the insulation element

30

(free)

31

Front edge of the masonry

32

plaster

33

compriband

34

parapet

35

Fensterlaibung

36

assembly corner

37

mounting end

38

side panel

39

Side panel height

40

component joint

41

third adhesive element

42

second sealing film

43

fourth adhesive element

44

fifth adhesive element

45

tissue

46

first section of the second slide

47

second section of the second slide

48

the bottom part

49

joint area

50

Eckpflaster

Claims (9)

1. Sealing system (10) for attaching a windowsill (7) to a window frame (9) or a building (8), having

   - a sealing film (2) serving to form a watertight and/or airtight layer,

   - an insulating element (5) arranged on one side (3) of the sealing film (2), extending in the film longitudinal direction (4) and connected to the sealing film (2), in order to insulate an interspace (6) between windowsill (7) and building (8),

   - at least one adhesive element (11, 12) arranged on the same side (3) of the sealing film (2) as the insulating element (5), extending parallel to the insulating element (5) in the film longitudinal direction (4) and connected to the sealing film (2), in order to fix the sealing system (10) to the window frame (9) and/or the building (8),

   characterized by a second sealing film (42) serving to form a watertight and/or airtight layer and having a first portion (46) and a second portion (47) adjacent thereto, wherein the first portion (46) is connected to the first sealing film (2) and the second portion (47) is designed to seal off a joint (40) between the building (8) and the insulating element (5).
2. Sealing system (10) according to Claim 1, having a first adhesive element (11) arranged beside the insulating element (5) in order to fix the sealing system (10) to the window frame (9), and having a second adhesive element (12) arranged beside the insulating element (5) on the same side (3) of the sealing film (2) but on the side of the insulating element (5) opposite to the first adhesive element (11), for fixing the sealing system (10) to the building (8).
3. Sealing system (10) according to Claim 1 or 2, wherein the insulating element (5) and the at least one adhesive element (11, 12) are arranged at a distance from each other on the sealing film (2) in such a way that an interspace (17, 18) serving for mounting purposes is formed between the insulating element (5) and the at least one adhesive element (11, 12).
4. Sealing system (10) according to one of Claims 1 to 3, having a sealing element (21) arranged on the side (19) of the sealing film (2) that is opposite to the at least one adhesive element (11, 12), extending parallel to the insulating element (5) in the film longitudinal direction (4) and connected to the sealing film (2), in order to seal off the sealing system (10) on the windowsill (7).
5. Sealing system (10) according to one of Claims 1 to 4, wherein the sealing system is a prefabricated web (1).
6. Sealing system (10) according to one of Claims 1 to 5, further having at least one trough-like, preferably self-adhesive mounting corner (36) for forming a water-carrying plane in the corner region of the windowsill (7), designed for fixing to the sealing film (2).
7. Insulating system (10) for providing insulation underneath a windowsill (7), having

   - an insulating element (5) for insulating an interspace (6) between the windowsill (7) and a building (8) or a window frame (9),

   - a sealing film (2) arranged on one side (20) of the insulating element (5), connected to the insulating element (5) and projecting beyond an outer edge of the insulating element (5), at least on one side (28, 29) of the insulating element (5), in order to form a watertight and/or airtight layer,

   - at least one adhesive element (11, 12) arranged on the same side (3) of the sealing film (2) as the insulating element (5), extending parallel to the insulating element (5) in the film longitudinal direction (4) and connected to the sealing film (2), in order to fix the insulating system (10) to the window frame (9) and/or the building (8),

   characterized by a second sealing film (42) serving to form a watertight and/or airtight layer and having a first portion (46) and a second portion (47) adjacent thereto, wherein the first portion (46) is connected to the first sealing film (2) and the second portion (47) is designed to seal off a joint (40) between the building (8) and the insulating element (5).
8. Windowsill arrangement

   - comprising a window frame (9), a building (8) and a windowsill (7) attached to the window frame (9) and to the building (8), and

   - having a system (10) according to one of Claims 1 to 7,

   - wherein the sealing film (2) is fixed by the at least one adhesive element (11, 12) to the window frame (9) and/or the building (8), so that a watertight and/or airtight layer is formed thereby between the windowsill (7) on the one hand and the window frame (9) or the building (8) on the other hand, and wherein the insulating element (5) is arranged on the side (3) of the sealing film (2), which is opposite to the window frame (9), in an interspace (6) between the windowsill (7) and the building (8) or the window frame (9).
9. Method for attaching a windowsill (7) to a window frame (9) or a building (8), in which firstly a system (10) according to one of Claims 1 to 7 is fixed to the window frame (9) and/or the building (8), by the sealing film (2) thereof being fixed by the at least one adhesive element (11, 12) to the window frame (9) and/or the building (8), so that a watertight and/or airtight layer is formed thereby over the window frame (9) or the building (8), and the insulating element (5) is arranged between the sealing film (2) on the one hand and the window frame (9) or the building (8) on the other hand, and then the windowsill (7) is mounted directly on the fixed system (10).

Images