EP1811111B1 - Window opening with a window frame and a sealing strip - Google Patents

Description

The invention relates to a window reveal with window frame and with a foam sealing strip in the installed state, wherein the foam sealing strip is used to seal the window frame and which is soaked for delayed recovery, the foam sealing strip two opposite, each in the installed state of the inside or Outside of the window facing narrow sides and has to bear against the window side or soffit suitable broadsides, with the further features of the preamble of claim 1.

Foam sealing strips of the type in question for sealing a window frame are known. Thus, in this regard, for example, on the EP 1 131 525 B1 directed. In this patent, a sealing strip is shown and described, consisting of an elastically resilient foam material. This strip may be accommodated in a wrapping film designed as a tear film, wherein, if appropriate, after a corresponding opening of the film, the foam sealing strip delays due to an intended impregnation. In this case, a broad side of the foam sealing strip is adhesively bonded to a lateral surface of the window frame facing the reveal of the masonry opening. In the installed state seals the sealing strip with its other broad side against the soffit. The narrow sides of the sealing strip aligned transversely to these broad sides are on the one hand facing the inside and, moreover, the outside of the window.

Furthermore, it is known to adjust sealing strip of the type in question adapted to their Einabauort more or less steam-braking. So come the. Window outside facing sealing strip used, which has a lower vapor barrier effect have to be assigned as the inside of the window sealing strips (according to DIN 4108-7).

The EP 317 833 A1 describes a zückstellfähiges sealing tape of several layers with a portion having elastically retarded restoring properties and another portion with elastically recovering properties of closed-cell foam, in the installed position, the two areas are arranged side by side with respect to the joint width.

The DE 43 07 528 A1 describes a soft foam joint sealing tape with delayed recovery, the recovery properties of the strip differing across its width.

The DE 10 2004 016 036 A1 describes a collapsible sealing profile with an elastically deformable leg, wherein a fixation of the leg after attachment of the sealing profile is releasable, so that the leg upright.

The EP 1426 540 A2 describes a sealing arrangement of a joint between a component and a respective cover of a component adjacent wall by means of a first sealing profile strip unit for a component outer joint and a second sealing profile strip unit for a component with respect to the inner joint, the two Moldings units provide different vapor diffusion resistance.

The DE 9410234 U1 describes a profiled set for producing a building connection between inserted into an opening of a building window elements and the building in the form of a Rundumverleistung with seal to the building, with a fastened to the window frame carrier profile strip, a latchable in different positions cover profile strip and provided with this latchable receiving pocket for a sealing profile strip are, being arranged in two windows outside Receiving pockets arranged on opposite sides of the window frame sealing profile strips may have different vapor permeability.

From the DE 200 09 674 U1 is a multi-layer sealing tape for sealing joints is known, which consists of several interconnected foam layers, each with different density and each interconnecting the layers air-impermeable barrier layers and which runs in the installed state in the direction of wall inside to outside wall.

In view of the above-described prior art, a technical problem of the invention is seen in a window reveal with window frame and sealing strips of the type in question in the installed state in handling technically advantageous formation of the sealing strip with respect to the vapor diffusion behavior to further improve the assembly of the Window frame is simplified.

This problem is solved by the subject matter of claim 1.

This is based on the fact that the narrow sides or narrow side portions of the sealing strip are designed differently, that in the installed state, ie at rest after full recovery of the sealing strip and corresponding sealing abutment against the soffit, the narrow side has a higher vapor barrier effect than the other narrow side. According to this embodiment, a sealing strip is provided, which has particular vapor diffusion advantages. The sealing strip according to the invention is set so that a predefined inside and outside of the same exists. Due to the different setting of the vapor barrier effect of the one and the other narrow side, a clear diffusion direction is indicated, namely from the side of higher vapor barrier effect to the side on the other hand, lower vapor barrier effect. Such a set sealing strip assumes in the inventive arrangement both the function of a room inside as well as a space outside the arranged strip. The defined diffusion direction makes this possible. For simplified identification of the differently set narrow sides, these can be clearly marked, for example by color recognition.

It is further provided that the sealing strip is formed with such a width that the same sealing strip provides both the seal to the room inside and to the outside of the room. The sealing strip therefore combines the known from the prior art single-sealing strips for sealing the room inside and for sealing the room outside. Accordingly, this gives a handling technical advantage, since now only one sealing strip associated with a window frame leg is to be arranged. The sealing strip preferably extends over approximately the entire thickness of the window frame, wherein further the sealing strip is held in an arrangement on the window frame, for example. By gluing initially in a restored, compressed position, which compression is, for example, released by tearing a wrapping film. The sealing strip is impregnated, resulting in a delayed reset. For visual differentiation of the inside and outside and thus of the different vapor barrier zones, the created integral sealing strip, for example, may be color-coded along its correspondingly set narrow sides, for example.

According to the invention, a window frame is inserted into the window reveal of a house, wherein the window frame is sealed against the reveal or a reveal element in such a way by the sealing strip that a higher vapor barrier effect is formed to the interior of the window frame than to the outside of the room.

Window frames of the type in question are known. With regard to the sealing strip to be inserted between the window frame and the reveal, reference is made to the prior art mentioned in the introduction.

A technical problem is solved by the invention to further improve a window frame of the type in question, in particular with regard to a simplified assembly.

In this case, it is made certain that the same sealing strip provides both the seal to the interior of the room and to the outside of the room, that the sealing strip is formed on foam base and that the foam space is formed on the inside with a higher vapor barrier effect. According to this embodiment, a window frame of the type in question is created, which is characterized in particular by a simplified assembly. It requires according to the proposal according to the invention only the arrangement of a. Sealing strip, assigned to the soffit facing frame narrow side. The sealing strip preferably extends over approximately the entire thickness of the window frame. The sealing strip is preferably held by gluing to the window frame further initially in a restored, compressed position, which compression is released in a possible embodiment by tearing open a wrapping film. The sealing strip fulfills the requirement according to DIN 4108-7, according to which a higher vapor barrier effect must be given to the interior of the room than to the outside of the room. This is achieved in the present case by only one sealing strip, which is further adjusted in particular room interior side according to obtain the higher vapor barrier effect.

The subjects of the further claims are explained below with reference to the subject matter of claim 1.

Thus, it is provided in an advantageous development of the subject invention that the higher vapor barrier effect is additionally achieved by a one-sided, strip narrow side coating. This coated side is in the installed state, i. after being arranged on the window frame and further in the window frame inserted window frame of the room inside. The otherwise across the entire width of the sealing strip - viewed from a narrow side to the opposite narrow side - basically a constant vapor barrier effect having foam material is partially covered by the proposed coating, namely assigned only a narrow edge area to thereby achieve a clearly defined portion of increased vapor barrier effect. The coating material is adjusted elastically in accordance with the ability of the foam material to return, wherein over the entire possible restoring dimension of the sealing strip, the higher vapor barrier effect compared to the rest of the foam material, in particular with respect to the outside edge facing narrow edge is secured. In this regard, latex may be used as the coating material. This may be a synthetically produced latex material, as they are known, for example from the carpet backing forth. Also suitable as coating material are acrylate, neoprene or rubber, such as, for example, styrene-butadiene rubber (SBK), natural rubber, synthetic rubber or chlorinated rubber. In the course of producing the sealing strip, this coating material is applied to one narrow side surface after the foam material has been cut , so on, for example, after compression of the foam material in the storage position by means of roller or brush application or by spraying.

The higher vapor barrier effect is inventively achieved by a one-sided higher compression of the foam in the installed state, so on, for example, by a higher material density over the same height of the narrow side.

This higher material density or the higher compression is in the installed state, ie in the rest state of the sealing strip after a complete recovery and investment against the facing window reveal before. Thus, further example, the foam strip in the fully decompressed state along the narrower side later having the higher vapor braking effect have a much greater thickness than in the other narrow edge side facing, later less vapor-damping area. Due to this accumulation of material along one narrow side, an increased material density and thus the desired higher vapor barrier effect are achieved in the compressed installation state. Alternatively, the higher material density may be achieved by having a lower height than the foam having additional foam material. Thus, in the region of the narrower side having the higher vapor barrier effect, a combination of the actual sealing strip foam material and the additional foam material is provided over the height of the strip, which combination preferably does not generally exceed the height of the foam strip. Thus, the additional foam material may be embedded in strips in the sealing strip foam. This additional foam material may further consist of the same material as the other foam strip. The embedding of this additional strip is carried out by compressing the associated strip portion of the sealing strip foam material, according to which there is an increased material density in the associated narrow edge region. As a further alternative, the additional foam material may also be a closed-cell foam, compared to the generally open-pore configuration of the sealing strip foam material. In addition, the higher material density can also be achieved in that part of the height is formed by means of a solid strip, for example plastic strip, with the same foam height of the expanded foam material. This bar can be an integral part of the sealing strip, is fed accordingly in the course of the production of the sealing strip of the corresponding narrow edge side, for compression of the related foam area, which causes the desired increased vapor barrier effect. This strip can also be alternatively positioned between the window frame and sealing strip positioned facing the interior of the room so as to partially, facing the interior, to reduce the gap between the window frame and facing window reveal, which in turn to a higher compression of the sealing strip foam material in the interior of the room he brings.

In a further alternative embodiment, the solid bar may extend over the entire, suitable for engagement with the window side or soffit broadside and have to achieve a different material density of the foam across the width zones of different bar strengths. Such profiled in cross-section bar carries a foam which viewed in the expanded position over the broad side has the same foam height. In function assignment, i. when placed between a soffit and a window frame, the foam is less compressed in the area of a trough-forming portion of the solidly formed bar than in an increase zone of the bar in comparison thereto, in which area a relatively high compression of the foam material is achieved , Also such a profiled in cross-section bar can be supplied in the course of the production of the sealing strip of the corresponding broad side of the foam, so on, for example, be sprayed. As a result, the strip thus formed is present as an integral part of the sealing strip.

With regard to the different vapor barrier effect of the foam toward the outer space and the inner space, it is preferably provided that the area of the foam defining the room interior vapor braking effect has a water vapor diffusion resistance value - also s _d value - which is 2 to 150 times the water vapor diffusion value of the space outside Steam braking action defining area corresponds. Thus, for example, a room interior value is selected which is 2 to 50 times, for example 7, 10, 13 or 25 times, for example 27, 32, 35 or 43 times corresponds to the space outside value. With the water vapor diffusion resistance value, the ability of water vapor permeability of building materials, etc. is described, wherein the diffusion resistance of a layer, the air layer thickness in meters is given, which would oppose the diffusion of the same resistance as the relevant layer. The different water vapor diffusion resistance values to the areas facing the room outside or inside the room are by measurements, for example. From the core of the foam out to the outside in the assigned areas or by measurements of a separate and thus only either a room outside-assignable area or a space inside assignable area having foam sealing strip to determine. With respect to the area of the foam-sealing strip defining the space outside vapor barrier effect, a water vapor diffusion resistance value between 0.1 and 10 m is provided, more preferably between 1 and 5 m.

The proposed integral foam sealing strip is preferably positioned between a window frame and the associated window reveal. Such a sealing strip can also be arranged between a window frame and an associated reveal element for a window opening, which reveal element is used in particular for window renovations. Such a soffit element is, for example, from the DE 102004006403 A1 known.

Fig. 1

in schematischer, perspektivischer Darstellung einen rollbaren Schaumstoff-Dichtstreifen der in Rede stehenden Art, eine erste Ausführungsform betreffend;

Fig. 2

die Herausvergrößerung des Bereiches II in Fig. 1;

Fig. 3

den stark vergrößerten Querschnitt durch den Dichtstreifen gemäß der ersten Ausführungsform;

Fig. 4

eine der Fig. 3 entsprechende Querschnittdarstellung, eine zweite Ausführungsform betreffend;

Fig. 5

eine weitere Querschnittdarstellung, betreffend eine dritte Ausführungsform;

Fig. 6

in schematischer Schnittdarstellung eine Einbausituation eines Dichtstreifens gemäß der in Fig. 5 dargestellten Ausführungsform, angeordnet zwischen einem Fensterrahmen und einer Fensterlaibung;

Fig. 7

eine der Fig. 6 entsprechende Darstellung, jedoch bei Anordnung eines Dichtstreifens in einer Ausführungsform gemäß Fig. 4;

Fig. 8

eine weitere schematische Schnittdarstellung eines Einbauzustandes, bei Anordnung eines Dichtstreifens gemäß der Ausführungsform in Fig. 3, bei Anordnung des Dichtstreifens zwischen einem Fensterrahmen und einem zwischen Fensterrahmen und Fensterlaibung angeordneten Laibungselement; und

Fig. 9

einen Querschnitt durch einen Dichtstreifen in einer weiteren Ausführungsform, den Einbauzustand betreffend.

Below, the invention with reference to the accompanying drawings, which illustrates only exemplary embodiments, explained in more detail. It shows:

Fig. 1

in a schematic, perspective view of a rollable foam sealing strip of the type in question, a first embodiment concerning;

Fig. 2

the enlargement of the area II in Fig. 1 ;

Fig. 3

the greatly enlarged cross section through the sealing strip according to the first embodiment;

Fig. 4

one of the Fig. 3 corresponding cross-sectional view relating to a second embodiment;

Fig. 5

another cross-sectional view, relating to a third embodiment;

Fig. 6

in a schematic sectional view of an installation situation of a sealing strip according to the in Fig. 5 illustrated embodiment, disposed between a window frame and a window reveal;

Fig. 7

one of the Fig. 6 corresponding representation, however, in an arrangement according to a sealing strip Fig. 4 ;

Fig. 8

a further schematic sectional view of an installed state, in the arrangement of a sealing strip according to the embodiment in Fig. 3 when the sealing strip is arranged between a window frame and a reveal element arranged between window frame and window reveal; and

Fig. 9

a cross-section through a sealing strip in a further embodiment concerning the installation state.

Shown and described is first with reference to Fig. 1 a foam sealing strip 1 in a first embodiment. This is before its incorporation preferred for use in roll form.

The selected foam material is more preferably a flexible polyurethane foam. This is impregnated, so on, for example, by means of Acrylatzusätzen so as to offer the sealing strip with a delayed provision. Accordingly, the sealing strip 1 in storage position corresponding to the above-mentioned EP 1 131 525 B1 be kept in a tearable wrapping film in the compressed state.

Regarding the possible inclusion of the sealing strip in a tear-wrapping film, hereby the content of EP 1 131 525 B1 fully incorporated in the disclosure of the present invention.

Alternative embodiments provide a sealing strip 1 without tear-off.

The foam sealing strip 1 has a cross-section as shown in FIG Fig. 3 on, with two broadsides 2, 3 and two i. W. at right angles to this extending narrow sides 4, 5.

The broad sides 2 and 3 have a length b, which corresponds to a multiple of the measured perpendicular to this length a of the narrow sides 4 and 5 respectively.

This is the case both in an optionally present compressed, further possibly enveloped state of the sealing strip 1 and after a return (decompression) of the sealing strip in the installed state. Thus, for example, the length b of the broad sides 2 and 3 in the compressed storage state corresponds approximately to ten times the narrow side length a, while in the installed state, i. in the decompressed idle state a ratio of broad side length b to narrow side length a of about 5: 1 is present.

The foam sealing strip 1 is used to seal a joint between a window frame 6 and the facing window reveal 7. The sealing strip 1 is provided on a broad side 2 with an adhesive layer 8, which is covered in the storage state of a protective film 9, for example. Siliconized film.

By means of this adhesive layer 8, the sealing strip 1 is fixed on the cheek of the fixed window frame 6 which faces the window reveal 7 and extends approximately parallel thereto.

As further in particular from the representations in the FIGS. 6 and 7 to recognize the length b of the sealing strip broad sides 2, 3 adapted to the window frame thickness; Accordingly corresponds approximately to the measured in the same direction extension of the sealing strip 1 bearing cheek of the window frame. 6

The sealing strip 1 seals, possibly after triggering by tearing open a wrapping film and its subsequent delayed return with the window frame 6 facing away from broadside 3 against the window reveal 7.

Due to the selected, adapted to the window frame thickness broad side length b of the proposed sealing strip 1 serves both for sealing to the outside A and for sealing to the inside I of the window frame. 6

The sealing strip 1 is to comply with the requirement known from the RAL that with respect to the vapor barrier effect to the room inside out a higher value must be present as the room outside, adjusted accordingly.

This is in the in the FIGS. 1 to 3 embodiment achieved by increasing the material density of the foam material, facing the inner side I associated narrow side 5 of the sealing strip 1. This zone 10 increased material density is created by embedding an additional foam material 11, which is a closed-cell foam in the illustrated embodiment.

This additional foam material 11 is in strip form, with one of the narrow side 5 of the sealing strip 1 facing narrow edge 12 which extends in the plane of the space inside narrow side 5 of the sealing strip 1. Next, the additional foam material 11 is the corner region between the inside narrow side 5 and the window frame 6 facing broad side 2 of the sealing strip 1, wherein the perpendicular to the narrow edge 12 extending Wide cheek 13 of the additional foam material 11 extends in the plane of the sealing strip broadside 2.

The measured in the direction of the narrow side width a height c of the additional foam material 11 corresponds to only a portion of the narrow side length a, so for example. In the illustrated embodiment, about a third to a quarter of the narrow side length a.

The extension length measured perpendicularly to the height h parallel to the sealing strip broad side 2 corresponds approximately to three to five times the material height h.

The additional foam material 11 is embedded in the foam material of the sealing strip 1 and non-detachably connected thereto. According to the cross-sectional configuration of the additional foam material 11, there may be an open-edge pocket in the sealing strip foam material for receiving the additional foam material 11. The required increased vapor barrier effect with respect to the sealing strip narrow side 4 assigned to the outside A is in this case achieved by influencing the cross-section through the insert of the additional foam material 11 in the form of a closed-pore material.

Alternatively, the additional foam material 11 as shown can also be integrated with compression of the soft foam material lying in overlap therewith. Due to the higher material density achieved in this case compared to the outer narrow side 4, the requirement according to DIN 4108-7 is reached, in which case the additional foam material 11 may also consist of the same open-cell flexible foam material as the remaining sealing strip 1.

Further alternatively, the higher material density in the region of the inner side I associated narrow side 5 can be achieved by a solid trained bar 14, which acts according to the above-described additional foam material 11 on the narrow side 5 associated zone 10. This strip 14 may be arranged on the frame side facing the inside I facing.

Also conceivable is a solution as shown in FIG Fig. 4 in which the strip 14 is embedded in the sealing strip material, regardless of the bar 14 has a height h which is less than the narrow side length a of the sealing strip 1, so on, for example, according to the previously described additional foam material 11 about one third to one quarter of the narrow side length a.

The plastic strip 14 is set to be vapor-impermeable. In connection with the zone 10 of the sealing strip 1 compressed by the action of the strip 14, this leads to the vapor braking effect which is increased in relation to the opposite narrow side 4.

Further alternatively, the increased vapor barrier effect can be achieved on the inner side 1 to be assigned sealing strip narrow side 5 by a coating of this narrow side 5. This coating 15 (see. Fig. 5 , as well as installation example according to Fig. 6 ) may be based on latex. By this coating 15 is a kind of vapor barrier on the narrow side 5 is set, wherein the elasticity of the sealing strip material is not affected by the selected coating material, in particular for resetting the same for sealing engagement against the window reveal 7. Accordingly, a coating material is chosen which allows the decompression of the foam material.

The coating 15 can also be formed, for example, by an elastic sealing strip applied on the narrow side 5 facing the space inside, so on, for example, by a closed-cell plastic strip.

The sealing strip 1 forms an integral sealing element for a fixed window frame 6 according to the selected cross-sectional dimensions and the different vapor permeability values to the outside A and to the inside I.

The sealing strip 1 can according to the representations in the FIGS. 6 and 7 adhesively bonded to the window frame 6 directly with the window reveal 7. Alternatively, the arrangement may also be as shown in FIG Fig. 8 be provided, wherein the sealing strip 1 seals against a made of a hard plastic material soffit element 16, which, for example, in the window renovation is used.

In Fig. 9 a further embodiment of the sealing strip 1 is shown. Similar to the embodiment shown in FIG Fig. 4 or 8, a combination of strip 14 and foam is also provided here. This strip 14 extends over the entire, here the window frame 6 facing broad side 2, which broadside 2 can serve at the same time via an adhesive zone for fixing the bar 14. Shown is an embodiment in which on the broad side 2 a plug-in holder with the window frame 6 is reached. According to this embodiment, the narrow sides 4 'and 5' of the strip 14, which extend perpendicular to the broad side 2, are respectively directly facing the outer side A and the inner side I, respectively.

The strip 14 is in cross section as shown in FIG Fig. 9 profiled in such a way that, viewed over the extent dimension of the broad side 2, different profile heights result. Thus, facing the narrow side 5 ', ie further facing the interior of the room I I provided a zone 20 greater strip thickness and higher levels relative to the broad side 3 for the foam. In the illustrated embodiment, in this case, the bar 14 extends transversely to the joint alignment considered about two thirds of the joint width f.

Adjacent to the zone 20, a zone 21 is provided. This has a relation to the zone 20 substantially reduced level. According to the illustrated embodiment, this reverses the ratio of pad level to joint width compared to the area of the zone 20, so that the strip thickness here corresponds to less than one third of the joint width f, up to a ratio at which the thickness of the foam material, the joint width f reached. In this section, the strip 14 is in the region of its broad side 2 in an associated recess of the window frame.

While in a cross-section as shown in Fig. 9 the zone 20 terminates in a flat, parallel to the broad side 2 aligned surface, the adjoining region of the zone 21 is defined in cross-section by a concave profile of the strip edge, further as shown, starting from the zone 20, the zone 21 initially continuously decreasing, but finally in the direction of the outside of the room A facing narrow side 4 'is slightly rising again, although the end of the zone 21, the narrow side 4' facing the measured transverse to the broad side edition level for the foam material less than half Fugenmaß corresponds.

Across the width of the bar 14, d. H. considered parallel to the broad side 2, the zone 21 occupies about two thirds to three quarters of the total width of the bar 14 a.

On the side facing away from the broad side 2 profiled surface of the bar 14 - on the different circulation levels - the foam material is not detachably connected to the bar 14. The foam strip has a uniform foam height at free expansion. Accordingly, the arranged on the bar 14 foam strip is due to the profiling described in the installed state as shown in FIG Fig. 9 compressed on one side at the end to achieve a higher material density. This zone 10 is of increased density associated with the zone 20 of the bar 14, in which zone 20, the bar 14 has a relative to the zone 21 increased bar thickness.

The narrow sides 4 and 5 of the foam material are partially flanked in the illustrated embodiment, but at least over the support level of the reinforced zone 20 projecting from integrally formed with the bar 14 side walls 22. The latter are dimensioned so that the resulting narrow sides 4 'and 5' of the strip 14 in the width direction have a smaller dimension than the width f of the joint to be sealed. The side walls 22 provide lateral support of the foam material.

The foam material is preferably an impregnated sealing tape. The strip 14 is, for example, produced in the plastic extrusion process, but may alternatively be formed by drawing a metal strand or as a milled wood profile.

The degree of compression in the region of the narrow side 4 facing the outer side A corresponds to approximately 50% of the degree of compression of the narrow side 5 associated with the inner side I. In the middle region viewed across the width, a greater expansion is achieved by the concave profile curvature relative to the outer side A. This corresponds in the illustrated embodiment, in turn, about 50% of the degree of compression of the foam in the outer side A facing area.

As an alternative to the described embodiment, in which the sealing strip 1 is present for installation or arrangement on the window frame in the compressed, possibly foil-packed state, the sealing strip 1 can also, in particular if the increased vapor barrier effect on the inner narrow side 5 by a Coating 15 is made to be compressed only in the course of attaching the sealing strip 1 to the window frame 6.

The proposed sealing strip 1 provides both the combination required for the outside A towards sealing against driving rain, which is usually achieved by the compressed state of rest in the installed state of the sealing strip 1, as well as viewed in the direction of width extension medium density level as thermal insulation, and the required vapor barrier effect or against the Outside increased vapor barrier effect to the room inside out.

Claims (11)

1. Window reveal with window frame and with foam sealing strip in the installed state, wherein the foam sealing strip is used to seal the window frame (6) with respect to the window reveal (7) and the foam sealing strip (1) is designed to be able to return to shape and is impregnated to delay the return to shape, wherein the foam sealing strip (1) has two narrow sides (4, 5), which are located opposite one another and which in the installed state respectively face the inside (I) or the outside (A) of the window frame (6), and broad sides (2, 3) having a width suitable for bearing against the window side or reveal (7), and the narrow sides (4, 5) or narrow side regions of the sealing strip respectively are designed differently and one narrow side (5) has a greater vapour barrier effect than the other narrow side (4), and wherein, in the installed state, the sealing strip is in the rest state after fully returning to shape and when bearing sealingly against the reveal, characterized in that the sealing strip (1) is designed with such a width (b) that said sealing strip (1) provides sealing both with respect to the inside of the room (I) and with respect to the outside of the room (A) and only one sealing strip is arranged in a manner assigned to one window frame limb, and in that the greater vapour barrier effect is achieved by a greater compression of the foam at one side in the installed state.
2. Window reveal with window frame according to claim 1, characterized in that the greater vapour barrier effect is additionally achieved by a coating (15) at one side on the narrow side of the strip.
3. Window reveal with window frame according to claim 2, characterized in that the coating material is latex.
4. Window reveal with window frame according to claim 2, characterized in that the coating material is acrylate or neoprene or rubber.
5. Window reveal with window frame according to any of claims 1 to 4, characterized in that the greater compression is achieved by a greater material density over the same height (a) of the narrow side (5) of the sealing strip.
6. Window reveal with window frame according to claim 5, characterized in that the greater material density is achieved by an additional foam material (11) of the sealing strip, said additional foam material having a smaller height (h) than the foam.
7. Window reveal with window frame according to claim 6, characterized in that the additional foam material (11) is a closed-pore foam.
8. Window reveal with window frame according to any of claims 1 to 7, characterized in that the greater material density is achieved in that part of the height (a) of the narrow side (5) of the sealing strip is formed by a solid bead (14), while maintaining the same foam height of the expanded foam material.
9. Window reveal with window frame according to claim 8, characterized in that the solid bead (14) extends over the entire broad side (2) suitable for bearing against the window side or reveal and has different bead thicknesses so as to achieve a different material density of the foam over the broad zones (20, 21).
10. Window reveal with window frame according to any of the preceding claims, characterized in that the region of the foam that defines the vapour barrier effect towards the inside of the room has a water vapour diffusion resistance value (sd value) which is 2 to 150 times the water vapour diffusion resistance value of the region that defines the vapour barrier effect towards the outside of the room.
11. Window reveal with window frame according to any of the preceding claims, characterized in that the water vapour diffusion resistance of the region of the foam that defines the vapour barrier effect towards the outside of the room is between 0.1 and 10 m, preferably between 1 and 5 m.

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