EP1529141B1 - Method for renovating exteriors of buildings in addition to a web or panel-type material for carrying out said method - Google Patents

Description

The invention relates to a web or plate-shaped material for substantially vertical building exterior walls with a clothing carrier, which with a plurality of shaped from a planar sheet or plate in a regular or irregular distribution of the sheet material shaped cup-like projections with at least substantially closed flat bottom surface and a grid fabric applied on an outer side of the film web is provided and a method for rehabilitating in particular heat-insulated outer surfaces of building walls using the plate-shaped material, wherein on the outer surfaces of one of a film web or plate shaped with out of the film material cup-like projections with at least substantially closed Floor surface and formed on an outer side of the film web provided mesh fabric layer of plate or sheet material with facing the building exterior wall Vors To form mutually interconnected air spaces between the building exterior wall and its underside is applied as a clothing carrier, whereupon the non-building provided with the mesh fabric side of the clothing wearer a crimson fabric enclosing curing or setting pre-plaster applied in a still-plastic state and then solidified , on the outside of which, after its solidification, an external covering, which determines the appearance of the building wall, is applied

Exterior walls of buildings are clad to protect against climatic influences as well as for visual / aesthetic reasons with coatings such as plastering and painting or cladding of plate material, ceramic plates, tiles or shingles or plates made of natural or artificial slate, etc. For reasons of reducing the energy demand in the heating and air conditioning of buildings and climate protection, the realization has prevailed in recent times that the thermal insulation of buildings must be improved, which has also found expression in the relevant regulations for the thermal insulation of newly built buildings , It has both for the subsequent Thermal insulation of older buildings as well as in the rebuilding of buildings enforced the so-called external insulation, to a large extent a thermal insulation composite system (ETICS) is used in which on the shell wall of the building exterior walls first thermal insulation boards, ie water vapor-diffusive foam boards or mineral fiber boards over Adhesive dots are applied with adhesive mortar on the shell wall. On the outside of these thermal insulation panels, a mesh fabric is then applied as a carrier for a pre-plaster, on which - after application and setting of the plaster - then finally the visible surface of the building performing external plaster or - at least in some areas, for example in the base area of a facade - also a plate -, In particular, a tile covering is applied.

It has been shown that these produced according to the described thermal insulation composite external insulation, especially in the joints of the adjacent thermal insulation boards - but also in poorly executed connections to adjacent components, which allow moisture into the thermal insulation composite system - by in the course the time can be damaged or destroyed due to the condensation of moisture diffusing out of the building interior of the condensed moisture and often poor processing in unfavorable weather conditions, which then moisture due to driving rain etc. can penetrate into the insulation, which then - as well as the underlying building wall - Moisturized and significantly reduced in their thermal insulation ability. For the renovation of such rehabilitation-needy external insulation according to the ETICS system had previously proceeded so that the entire outer insulation was knocked off and disposed of and then an external insulation was applied, which of course from the outset again the described vulnerability to damage in the joint area and resulting moisture had. Both the removal of insulation in need of rehabilitation and their removal and storage lead to considerable cost and effort.

From the DE 19 750 277 A is a web-shaped substrate known, which among other things, can be used for the creation of ventilated exterior surfaces of buildings. The carrier material has a plastic film with alternately protruding from opposite sides Tests with this known carrier material have shown that the removal of in the formed by the profiled film between the projections projecting to the building wall vent space condensing liquid water is not optimal, because the itself on the towards the underground of the building facade slightly frustoconical tapered projections in the upper half of the projections settling liquid condensate tends to flow to the building exterior wall rather than the film base and thereby wet the building wall, which then - especially with frost effect - cause of damage can form in the building substance. The same applies in principle when using the from US 2001/0054263 A1 and the DE 4 106 986 A known with tapered projections provided with tapered film webs for construction purposes.

In contrast, the invention has for its object to provide a usable in the manufacture or renovation of insulated building exterior wall panels web or plate-shaped material and a method of using the material, which on both the outer surfaces of building walls of shell buildings and on the outside of the building walls is used by older buildings, which are already provided with an unsightly become or damaged plaster, clinker or tile covering or external thermal insulation. That The material according to the invention should not only be suitable in principle for new buildings, but in particular also for refurbishment or embellishment and, if desired, for the subsequent thermal insulation of buildings, whereby water vapor condensate possibly accumulating on the outside of the building can be applied via a film material between the clothing carrier and the building material. Exterior walls formed contiguous air space dissipated and so a rewet the building exterior walls is excluded with certainty.

This object is achieved by a material of the type mentioned, in which the cup-like projections are vortretend vortretend exclusively from the outer side facing away from the grid fabric, and the walls and the bottom surface and the planar sheet or plate connecting walls of the projections relative to a substantially vertical positioning on a building wall in its upper region from the bottom surface of the respective projection obliquely inclined in the downward direction to the planar film web or plate.

The projections of the sheet or plate-shaped material have expediently in relation to the prescribed mounting position in the vertical direction in plan view elongated shape,
currently a long oval or elliptical shape is preferred.

It is advantageous if the projections are arranged in relation to the prescribed mounting position in parallel vertical rows, since then the condensate discharged into the spaces between these rows condensate can flow directly through the further located on the inside of the film web without obstruction by located there further projections.

The walls of the projections extending between the bottom surface and the upper planar film expand slightly conically from the bottom surface to the film surface, except for the upper region inclined at an angle to the film surface, and it is advantageous if the slightly conically widening surface is advantageous lateral wall regions at a distance parallel to the planar sheet of film in the direction of the bottom surface offset narrow, rib-like outwardly projecting wall portions are formed, which prevent even in these areas a flow of condensate in the direction of the building wall.

The adhesion of the condensed water droplets and the removal in the downward direction on the inside of the film can also be improved by the fact that the planar film web in the areas lying between the projections relative to the prescribed mounting position in the vertical direction extending parallel riefenartige depressions or roughening.

The protrusions may also be provided with a multiplicity of through openings or perforations, at least in the area of their flat bottom surface and furthermore also in the adjoining wall region, through which water vapor present in the air space can diffuse out to the outside atmosphere.

For use in areas where there is high humidity, so that there is a risk that water vapor from the outside can diffuse into the building wall, which then - for example, by cooling - condenses as a result of the air conditioning of the building and drenched the wall, it can Alternatively, be advantageous if the profiled film consists entirely of a continuous water vapor diffusion-impermeable material.

On the planar side opposite the projections of the film web or plate, a mesh fabric is adhesively applied in an advantageous development, which on the one hand ensures the adhesion to the outside when applied to the outside adhesive mortar or leveling jobs and beyond these applied layers after the Hardening or setting also reinforced.

If an additional thermal insulation is desired with the material to be applied, it is advantageous if a layer of heat-insulating material which is adhesively bonded to the facing outer sides of the bottom surfaces of the projections is provided on the side of the film web facing away from the web.

In the rehabilitation of particular thermally insulated outer surfaces of building walls using the web or plate-like material formed on the outer surfaces of a film web or plate with molded out of the film material cup-like projections with at least substantially closed bottom surface and formed on an outer side of the film web lattice fabric layer from plate or web-shaped material facing the building exterior wall projections to form interconnected air spaces between the building outer wall and its underside applied as a clothing carrier, whereupon the building away facing provided with the mesh fabric side of the clothing wearer a surrounding the mesh fabric hardening or setting pre-plaster applied in a still viscous state and then solidified, on the outside after its solidification an outer, the appearance of the building wall determining R coating is applied, in which case according to the invention a clothing carrier with a plurality of exclusively of the lattice tissue facing away from the outside of the planar Film web or plate is used on the same side formed from the sheet material cup-like projections, wherein the walls connecting the bottom surfaces and the planar sheet or plate of the projections relative to the substantially vertical mounting position on the building outer surface in their upper regions of the Bottom surface of the projections obliquely inclined in the downward direction to the planar sheet or sheet passes.

If an additional thermal insulation is sought, can be moved in accordance with the invention training that the film of the clothing wearer before applying on the existing building exterior wall on their building facing outside connected to a layer of heat-insulating material and then produced composite layer then on the existing building wall is applied as a unit. In addition to the use for the rehabilitation of damaged thermal insulation composite systems, the method of the invention can also be used in general to create a decoupled from the substrate plaster-carrier system, which also on shear insulation boards, not with plaster coatable substrates and seamless plaster renovation in old prefabricated house facades can be used.

The profiled foil is advantageously laid on the outside of the building exterior wall in the development according to the invention such that at least one passage to the ambient atmosphere is formed at least in the lower horizontal lower edge region of the foil. As a result, water vapor diffused out of the building wall as well as formed condensate can be removed.

It is expedient, if the profiled film is laid on the outside of the building exterior wall, that at least one passage to the ambient atmosphere is formed even in Bodenfemen upper horizontal edge region of the film. As a result, a rear ventilation of the additionally applied composite layer of foil, pre-plaster and outer lining is obtained, which functionally ensures the usual in construction ventilated facades according to a removal of water vapor and moisture from the Gebäudeinnem and protection against driving rain, etc.

The film used for the lining carrier itself can be a continuous closed film, which thus forms a barrier against the ingress of moisture by driving rain or by reverse diffusion in unfavorable external climatic conditions in the building wall.

Alternatively, the inventive method can also be carried out using a film having a plurality of through openings or perforations, so that therefore through these openings or perforations evaporation or evaporation of water vapor is possible. The use of such perforated films can be done in addition to the above-described attachment with passages in the region of the lower and / or upper edge. In many cases, however, the water vapor permeability of the film as a result of created by the passages or perforations water vapor passageway suffice to avoid the formation of moisture in the building wall. The risk that penetrates through the openings or perforations in the film water through driving rain, etc., can be excluded by using appropriate water-repellent, but permeable construction materials for the pre-plaster and the outer lining.

If in the context of the inventive method already provided with an external insulation building is to be additionally insulated, can be applied to the building wall between the outside of the existing insulation and the film before applying an additional thermal insulation layer of a diffusion-permeable material for water vapor, in which case It is expedient to apply a contact layer of a mortar or adhesive to the existing thermal insulation prior to the application of the film provided with the mesh fabric, to which the profiled film is applied in a first uncured or cured state of the mortar and then adhesively fixed in the subsequent solidification of the mortar , The contact layer can also be previously applied to the provided with mesh fabric film and applied together with this on the existing thermal insulation.

For the final fixation and fixing of the additionally applied layers, dowels are preferably used in an advantageous development of the method according to the invention from the actual large and resting on the outside of the surface to be fastened plate vortretende elongated shafts through each aligned and guided into the building wall holes in the film, optionally provided additional thermal insulation layer, the existing insulation and the building wall passed and in the hole anchored to the building. In this way, all layers and coverings applied to the raw masonry of the building wall to be insulated are mechanically fixed on the building wall, with the exception of the exterior plaster and the last exterior covering. The pre-plaster and the external plaster applied to this is inextricably linked to the film by the embedded mesh fabric.

When using an additional heat-insulating layer, it may also be formed so that it is profiled on its outer side facing the film to form at least one layer of air between the additional heat-insulating layer and the film, in which case a film can be used, which on their, the Thermal insulation layer facing side no profiling formed by profile protrusions greater height must have. However, a certain surface structuring or roughness of the film at least on the side provided with the mesh fabric is in any case expedient for the firm adhesion of the rough plaster.

Fig. 1

eine Schnittansicht mit horizontaler Schnittführung durch einen Gebäudewand-Abschnitt mit einer Außendämmung, welche durch eine in der erfindungsgemäßen Weise aufgebrachte profilierte Folie gegen Durchfeuchtung geschützt ist;

Fig. 2

eine der Figur 1 entsprechende Schnittansicht, bei welcher die profilierte Folie zunächst durch eine auf der ursprünglichen Außendämmung aufgebrachten Kontaktschicht eines Mörtels oder Klebers in ihren Aufsetzbereichen vorfixiert ist;

Fig. 3

eine der Figur 1 entsprechende Schnittansicht, in welcher zur Verbesserung der Wärmedämmung des Gebäudes insgesamt zwischen der Außendämmung und der Folie eine zusätzliche Wärmedämm-Schicht angeordnet ist;

Fig. 4

eine der Figur 2 entsprechende Schnittansicht, in welcher die in der erfindungsgemäßen Weise zwischen der Folie und der Außenwandung gebildete Luftschicht überwiegend durch Profilierung der folienzugewandten Außenseite der zusätzlichen Wärmedämm-Schicht gebildet wird;

Fig. 5

eine perspektivische Darstellung eines zur Durchführung des erfindungsgemäßen Verfahrens geeigneten Bahnmaterials in isometrischer Darstellung, welches von einer ebenflächigen Kunststoff-Folienbahn gebildet wird, in welche im Vakuum-Tiefziehverfahren langgestreckte Vertiefungen eingeformt sind, wobei von der Folie abgehoben zusätzlich ein auf der Oberseite des Bahnmaterials aufbringbares Gittergewebe schematisch dargestellt ist;

Fig. 6

eine Ansicht des Bahnmaterials, gesehen in Richtung des Pfeils 6 in Figur 5;

Fig. 7

eine Draufsicht auf den innerhalb des strichpunktierten Bereichs 7 in Figur 5 befindlichen Bereich des Bahnmaterials in maßstäblich etwas vergrößerter Darstellung;

Fig. 8

eine Schnittansicht entlang der Pfeile 8-8 in Figur 7;

Fig. 9

eine Schnittansicht in der durch die Pfeile 9-9 in Figur 7 definierten Schnittebene; und

Fig. 10

eine Schnittansicht durch einen Abschnitt eines Bekleidungsträgers, bei welchem die früher auf ihrer gittergewebeabgewandten Seite mit einer zusätzlichen Wärmedämmschicht verbunden ist.

The invention is explained in more detail in the following description in conjunction with the drawing, in which:

Fig. 1

a sectional view with a horizontal section through a building wall section with an outer insulation, which is protected by a applied in the inventive manner profiled foil against moisture penetration;

Fig. 2

one of the FIG. 1 corresponding sectional view, in which the profiled film is first pre-fixed in its Aufsetzbereichen by an applied on the original outer insulation contact layer of a mortar or adhesive;

Fig. 3

one of the FIG. 1 corresponding sectional view, in which a total of between the outer insulation and the film, an additional thermal insulation layer is arranged to improve the thermal insulation of the building;

Fig. 4

one of the FIG. 2 corresponding sectional view, in which the air layer formed in the manner according to the invention between the film and the outer wall is formed predominantly by profiling the foil-facing outside of the additional heat-insulating layer;

Fig. 5

a perspective view of a suitable for carrying out the method according to the invention web material in an isometric view, which is formed by a planar plastic film web into which elongated depressions are formed in the vacuum deep-drawing process, wherein lifted from the film additionally a on the top of the web material attachable grid fabric is shown schematically;

Fig. 6

a view of the web material, seen in the direction of arrow 6 in FIG. 5 ;

Fig. 7

a plan view of the inside of the dot-dashed area 7 in FIG. 5 located area of the web material in scale slightly enlarged representation;

Fig. 8

a sectional view taken along the arrows 8-8 in FIG. 7 ;

Fig. 9

a sectional view in the section plane defined by the arrows 9-9 in Figure 7; and

Fig. 10

a sectional view through a portion of a clothing wearer, in which the earlier on its lattice facing away from the side is connected to an additional thermal barrier coating.

The in Fig. 1 shown in section thermally insulated wall construction has a series of successive applied to the outer surface 12 of a building wall 10 coating layer. By spatially spaced apart, applied to the outer side 12 connecting points 14 of a thermosetting or bonding pressure-sensitive adhesive or mortar thermally insulating, but permeable to water vapor diffusion permeable panels of insulating material are applied in tight Nebenund overlay, which thus form a heat-insulating layer 16, on the Building wall 10 opposite outside a high-strength wide-mesh mesh fabric 18 is provided, which is embedded in a applied on the outside of the thermal barrier coating 16 pre-plaster 20. The mesh fabric serves both to mediate adhesion of the rough plaster with the thermal barrier coating 16 and to reinforce the rough plaster against cracking. On the rough plaster 20 is then applied a thin layer 22 of an exterior plaster. This covering layer structure, which is in Fig. 1 is characterized by the curly bracket a, schematically illustrates the structure of a building wall with an external insulation In the so-called. "Thermal insulation composite system (ETICS)" dar. To protect this known and today used on a large scale both later in older buildings and new buildings type of exterior insulated building wall against moisture penetration and consequent damage or destruction in frost effect or a To rehabilitate already damaged wall structure, a layer 24 of profiled sheet-like film material is additionally applied on the outside of the rough plaster 20, in which in the case illustrated an originally planar rigid film by edges of strip-shaped areas profiling shown with alternately to opposite sides each open is formed conically widening channels. The applied to the outer plaster 22 profiled film 24 thus forms on the side facing the building wall 10 side spaced parallel from top to bottom passing channels 26, which can be absorbed and removed from the building interior diffusing out water vapor and auskondensierende from this water droplets. In order to enable this removal of water vapor or water droplets, the building-side channels 26 formed by the profiling are connected at least in the region of the lower, but preferably also at the upper end via passages to the outside atmosphere. In addition, by using a film 24 provided with a plurality of through openings or perforations, or made of a material which is permeable to water vapor, water vapor may be discharged to the outside atmosphere, if desired.

On the opposite, ie building side facing away from the film 24, in turn, a high-strength mesh fabric 28 is applied firmly or loosely. On the provided with the mesh fabric side sheet 24 then again of a layer of a setting or thermosetting mortar formed rough plaster 30 is applied over the entire surface so that it fills out the open lying between the channels 26 channels of the film 24 and beyond the mesh fabric 28 completely embeds. In this pre-plaster 30 then another - not connected to the film 24 - mesh fabric 31 is introduced as a reinforcement. On the cured and after application in the usual way smoothed rough plaster 30 then the optical appearance of the building wall determining coating layer is applied, which in the case illustrated may be formed by an external plaster 32, but also from a covering in the usual way by means of tile adhesive applied Tiles, clinker and other suitable and approved for thermal insulation systems coating materials may consist.

The fixation of the on the in Fig. 1 with the curly bracket a marked original covering layer structure additionally applied covering layer structure n1 of foil 24, mesh fabric 28, pre-plaster 30 and outer plaster 32 on the thermal insulation to be rehabilitated or protected by means of dowels, of which Fig. 1 such a plate anchor 34 is shown schematically. The dowel plate has at its end facing away from the building wall on a large plate-like head 36, the building carries an elongated projecting dowel shaft 38 which through bores in the entire deck structure a and n1 into a hole in the building wall 10 inserted and then by spreading the in the hole in the building wall 10 lying end can be fixed. By means of the plate dowel 34, on the one hand, the additional covering structure n1 is fixed on the original thermal insulation, but beyond that also this original thermal insulation on the building wall 10. This fixation by inserting the shaft 38 of the plate dowel 34 in the previously prepared holes is carried out after applying the film 24 on the outer plaster 22 of the existing insulation and before the subsequent application of the rough plaster 30 on the provided with the mesh fabric 28 side of the film 24th

Thus, the method according to the invention is concerned with the stepwise construction of the outer coating layer structure identified by n1 from the film 24 with the mesh fabric 28, the rough plaster 30 and finally the outer plaster 32 or, instead, the application of a tile covering, which is then to be used for fastening the tiles fabric-reinforced putty layer must be mitverdübelt.

The in Fig. 2 illustrated pavement structure differs from the pavement structure according to Fig. 1 in that the film 24 is at least prefixed on the original covering structure a by an additional contact layer 25 made of a mortar or adhesive, before the actual fastening takes place by means of the plate dowel 34. This additional prefixing step facilitates the exact location and retention of the film 24 prior to its final fixing by the dowels 34.

In order for this pre-fixing a sufficient adhesion of the film 24 is also achieved in the subsequent introduction of holes for the dowel, etc., it may be advantageous if the film used has 24 shown in the drawing deviating profiling. The film is formed in the to be connected to the contact layer 25 Aufsetzbereichen with enlarged foot areas, which not only an increase in adhesion by enlarging the adhesive surface result, but then anchored by pressing the foot surfaces in the still-plasticized mortar or adhesive in the cured contact layer and then form-fitting are.

In Fig. 3 is the result of an advantageous development of a method according to the invention Fig. 1 illustrates, in which between the originally existing and to be protected or to be renovated lining structure a and the in Fig. 1 described in the case with spaced clamping points 42 on the existing external insulation, ie in the case illustrated on the outer plaster 20 of the originally existing. Thermal insulation is prefixed, after which the additional coating layers n1 in conjunction with Fig. 1 be applied described manner. The newly applied lining structure n2 here therefore comprises n1 in addition to the lining structure according to FIG Fig. 1 nor the heat-insulating layer 40th

Fig. 4 Finally, FIG. 1 illustrates a pavement structure substantially corresponding to the pavement layer structure according to FIG Fig. 2 corresponds, ie, an additional heat-insulating layer 40 in the outer lining layer structure n3 comprises. Deviating from Fig. 2 Here are the channels 26 but produced by appropriate profiling of the film-facing surface of the thermal barrier coating 40, whereby a lesser extent or at least on the building side surface substantially planar sheet 24 can be used with laminated on the opposite more reasonably structured surface mesh fabric 28.

The fixation as an additional covering layer structure n3 on the original lining layer structure a is again effected by means of the in connection with FIG Fig. 1 described plate dowels 34th

It can be seen that in the context of the inventive concept, modifications and developments of the described covering structures in the manner according to the invention are conceivable. Thus, the profiled films can be made not only of Kunststoffmatrial as in the described embodiments, but alternatively also of metallic foil or thin metal sheet as well as fiber-reinforced composite plate material. Also thicker profiled mat or web material, which is made of adhesively bonded together, recycled rubber particles obtained, comes as a film material in the context of the inventive concept in question.

The per se water vapor diffusion-impermeable film material can also be formed by perforation or introduction of through holes additionally at least partially permeable to water vapor, if it is ensured by the additionally applied layers of the rough plaster 30 and the external plaster 32 or a replacement provided tiling that these outer layers, although permeable to water vapor but not due to capillary action allow water in liquid form to pass inwards.

In the FIGS. 5 and 6 the section of a particularly suitable for carrying out the method described above sheet material is shown, which therefore advantageously instead of in connection with the FIGS. 1 to 4 described channels 26 can occur profiled films forming.

The material is also made of an originally planar film web 50 made of thermoplastic material, in which the vacuum deep-drawing process in regular distribution in FIG. 5 recognizable langovalen projections 52 are formed, which therefore protrude from the visible surface facing away bottom of the film material 50 and open at the top open. At a distance above the film web 50 is still a schematically - example of glass fibers high tensile strength existing - grid fabric 54 is shown, which can be applied in addition to the top of the film web 50 adhesive. The film web and adhering to her grid fabric then represent a clothing carrier.

The prescribed laying direction of the film web 50 in the context of the method according to the invention is indicated by the arrows o and u, where o the Alignment of the film in a vertical position upwards and - accordingly - u defines the direction down.

In FIG. 6 is an essential feature of the film material 50 can be seen at the two in the direction of the front projections. The protrusions 52, which are produced with a substantially flat bottom surface 56, are shaped in their intended direction of installation front or upper end deviating from the otherwise conically tapering to the open top wall so that there adjoining the bottom surface 56 wall portions 62 a backwards, that is, in the downward direction to the planar area of the film material 50 extending inclination. This ensures that in the condensation of water vapor in the air space between the web material 50 and the adjacent building wall forming droplets that yes due to gravity have the tendency to flow in the downward direction, ie in the direction of arrow u, at the emergence the upper wall region of the projection 52 does not flow toward the building wall, but to the bottom of the planar region of the film material 50 and then held by adhesion to the underside of the film material.

In the FIG. 5 and 7 recognizable running in the vertical direction corrugation 58 of the film material, which corresponds to a complementary corrugation on the underside of the film material, on the one hand has the task of improved adhesion of applied to the top of the film material mortar, adhesive or filler layer, while the complementary corrugation on the Bottom increases the adhesion of condensed water droplets and ensures their removal on the bottom of the film in the downward direction.

The FIGS. 7 to 9 show in plan view and two different sectional planes a section of the film material 50 in an enlarged scale, in which a projection 52 is formed. It can be seen that the upper region, with respect to the laying direction, of the wall surface 52a extending between the bottom surface 56 and the planar area of the film material 50 has the already explained backward inclined shape. In addition, are also in the FIGS. 7 and 9 from the bottom surface 56 a short distance in the final wall continuing through slots 60 are shown, which the additional possibility of removal of water vapor from the Allow air space between film material 50 and building wall by outdiffusion through the slots 60 therethrough.

In the lateral elongate wall regions of the projections 52 are - in relation to the planar area of the film web 50 offset toward the bottom surface 56 - elongated narrow and protruding into the air space projections 62 formed, which have a barrier effect for such water droplets, which otherwise on these lateral Wandungsbereichen could flow to the building wall.

In Fig. 10 illustrates that the profiled foil 24 may be additionally adhesively bonded to the heat-insulating layer on the opposite side with the mesh fabric 28 laminated on its one side, so that a clothing carrier that can be handled as a unit when installed on the outside wall of a building is produced Layer structure and its function essentially the representation according to Fig. 3 equivalent. That is, this clothing carrier is used in those cases in which additional heat insulation is desired or required. For such a composite lining carrier, of course, the above in connection with the Fig. 5 to 9 described film 50 are used.

Claims (22)

1. Material in the form of a sheet or panel for substantially vertical external walls of a building with a cladding support which is provided with a plurality of cup-like projections (52) formed out of the film material of a planar film sheet (50) or panel in a regular or irregular distribution with at least largely closed flat base surface (56) and a fabric mesh applied to an outer face of the film sheet, characterised in that the cup-like projections (52) are formed out so as to project exclusively from the outer face of the planar film sheet (50) or panel facing away from the fabric mesh, and that the upper region (52a) of the walls of the projections (52) connecting the base surface (56) and the planar film sheet or panel extend, relative to a substantially vertical position on a building wall (10), obliquely with respect to the planar film sheet (50) or panel from the base surface (56) of the respective projection (52).
2. Material as claimed in Claim 1, characterised in that the projections (52) have an elongate shape relative to the installed position in the vertical direction in plan view.
3. Material as claimed in Claim 1 or Claim 2, characterised in that the projections (52) have a long oval or elliptical shape in plan view.
4. Material as claimed in any one of Claims 1 to 3, characterised in that the projections (52) are disposed in parallel vertical rows relative to the prescribed vertical installation position.
5. Material as claimed in Claim 3 or Claim 4, characterised in that the walls of the projections (52) extending between the base surface (56) and planar film sheet (50), with the exception of the upper region (52a) inclined obliquely with respect to the film surface, widen slightly conically from the base surface (56) to the film surface, and that narrow wall regions (62) projecting outwards like ribs and extending spaced apart parallel to the planar film sheet (50) are formed into the slightly conically widened lateral wall regions.
6. Material as claimed in any one of Claims 1 to 5, characterised in that the planar film sheet (50) has parallel groove-like recesses or scorings (58) extending in the vertical direction relative to the prescribed installation position in the regions between the projections (52).
7. Material as claimed in any one of Claims 1 to 6, characterised in that the projections (52) are provided at least in the region of their flat base surface (56) with a plurality of through openings (60) or perforations.
8. Material as claimed in any one of Claims 1 to 6, characterised in that the film sheet (50) or panel provided with the projections is made overall from a continuous material which is impermeable to water vapour.
9. Material as claimed in any one of Claims 1 to 8, characterised in that the fabric mesh provided on the planar face of the film sheet (50) or panel lying opposite the projections (52) is applied so as to adhere firmly on the outer face of the film sheet or panel.
10. Material as claimed in Claim 9, characterised in that a layer of heat-insulating material (16) which is connected to the facing outer faces of the base surfaces (56) of the projections (52) so as to adhere firmly on the face of the film sheet (50) or panel facing away from the fabric mesh.
11. Method for refurbishment of in particular heat-insulated outer faces (12) of building walls (10) using the material as claimed in any one of Claims 1 to 10, wherein a layer formed from a film sheet or panel (50) with cup-like projections (52) formed out of the film material with an at least largely closed base surface (56) and fabric mesh (54) provided on an outer face of the film sheet is applied to the outer faces (12) of the building wall, the said layer of material in the form of a panel or sheet having projections pointing towards the outer wall (10) of the building forming air spaces connected to one another between the outer wall (10) of the building and its underside, whereupon a hardening or setting render surrounding the fabric mesh is applied in a still workable state to the face of the cladding support facing away from the building and provided with the fabric mesh (54), an external coating (32) which determines the appearance of the building wall being applied to the after solidification to the outer face of the render, characterised in that the cladding support is used with a plurality of cup-like projections (52) formed out on the same side from the film material exclusively from the outer face of the planar film sheet (50) or panel facing away from the fabric mesh, wherein the upper regions (52a) of the walls of the projections (52) connecting the base surfaces (56) and the planar film sheet (50) or panel extend, relative to the substantially vertical mounting position on the outer face (12) of the building, extend obliquely downwards from the base surface (56) of the projections with respect to the planar film sheet (50) or panel.
12. Method as claimed in Claim 11, characterised in that before the application to the outer face (12) of the building to be refurbished the film sheet (50) or panel of the cladding support is connected on its side facing the building wall to an additional heat insulating layer (40), and that the compound layer (n2) produced in this way is then applied as a unit to the existing outer face (12) of the building.
13. Method as claimed in Claim 11 or 12, characterised in that the profiled film sheet (50) or panel of the cladding support is applied to the outer face (12) of the building so that at least in its lower horizontal edge region near the base at least one through passage is formed to the air spaces between the film sheet or panel and the outer face (12) of the building.
14. Method as claimed in any one of Claims 11 to 13, characterised in that the profiled film sheet (50) or panel of the cladding support is applied to the outer face (12) of the building so that at least in its lower horizontal edge region remote from the base at least one through passage is formed to the air spaces between the film sheet or panel and the outer face (12) of the building.
15. Method as claimed in any one of Claims 11 to 14, characterised in that a film sheet (50) or panel is used which is made from a continuously closed film material which is impermeable to water vapour.
16. Method as claimed in any one of Claims 11 to 14, characterised in that a film sheet (50) or panel is used which is made from a film material provided with a plurality of through openings or perforations.
17. Method as claimed in any one of Claims 11 to 16, characterised in that before the application of the film sheet (50) or panel provided with the fabric mesh to the existing heat insulation (16) of the building wall (10) a contact layer (25) of a mortar or adhesive is applied, on which the film sheet or panel is applied initially while the mortar or adhesive is not yet in the hardened or set state and is then fixed adhesively by the subsequent solidification of the mortar or adhesive.
18. Method as claimed in any one of Claims 11 to 17, characterised in that a film sheet (50) or panel with a bearing surface extending over the contact layer (25) in the bearing region.
19. Method as claimed in Claim 17 or 18, characterised in that the film sheet (50) or panel applied to the existing heat insulation (16) as well as any additional layer(s) which may be provided are fixed by means of insulation anchors (34), of which the elongate shanks (38) are anchored in each case by aligned bores in the film sheet (50) or panel extending into the building wall (10), passing through any additional layers which may be present, the existing heat insulation (16) and the building wall (10) and in the respective bore in the building wall (10).
20. Method as claimed in Claim 18 or 19, characterised by the use of an additional heat insulation layer (40) which is to be disposed between the outer face of the existing heat insulation (16) to the refurbished, and which is profiled on its outer face facing the film sheet in order to form at least one air layer between the additional heat insulating layer and the film sheet (50) or panel, whilst the film sheet or panel has no profiling formed by profiled projections of greater height on its face facing the additional heat insulation layer (40).
21. Method as claimed in Claim 20, characterised in that a film sheet (50) or panel is used which is provided on its face facing away from the additional heat insulating layer (40) with a surface construction which improves the adhesion for a filler or plaster layer to be applied.
22. Method as claimed in Claim 20 or Claim 21, characterised in that a material which is permeable to water vapour is used for the additional heat insulating layer (40).

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