Damp-proof course for sealing a building

Abstract

Damp-proof course (2, 2a, 2b) for sealing against penetrating moisture and water and / or rising vapor in buildings, comprising: a butyl or bitumen layer (4), and an adhesive coating (6) made of a hot melt adhesive bonded to the butyl or bitumen layer (4).

Description

[0001] The invention relates to a moisture barrier for sealing against penetrating moisture and water and / or against rising steam in buildings.

[0002] In construction, sealing against moisture and water vapor plays a crucial role. Moisture barriers, such as water-repellent protective coatings, mineral sealants, impregnations like polymer dispersions, PVC films, or bitumen sheets, are applied to a foundation slab or roof. These barriers are particularly important for sealing roofs and flat roofs, preventing rising damp from the building interior from penetrating insulation installed on top of the barrier. The insulation is typically sealed from above or on the outside by a waterproof membrane, thus protecting the roof and insulation from external environmental influences. Moisture barriers with a bitumen layer on the exterior are also common.The bitumen layer is used as a self-adhesive layer, and therefore no separate adhesive coating is required for a membrane with an external bitumen layer.

[0003] The object of the invention is to provide an improved moisture barrier and an arrangement with such a moisture barrier, and in particular a moisture barrier with improved processing properties.

[0004] This task is solved using the features of the independent claims. Advantageous embodiments are the subject of the dependent claims.

[0005] According to claim 1, a damp-proof course is provided for sealing against penetrating moisture and water and / or rising steam in buildings. The damp-proof course comprises: a butyl or bitumen layer, and an adhesive coating made of a hot-melt adhesive, which is bonded to the butyl or bitumen layer.

[0006] Thanks to the use of hot-melt adhesive, the damp-proof course can be applied even at very low temperatures, such as -10°C, -8°C, or -5°C. Furthermore, the damp-proof course can be applied underwater, meaning the adhesive coating is water-resistant. This allows for installation of the damp-proof course even in winter, rain, or general damp conditions. Therefore, rapid installation of the damp-proof course is possible, largely independent of environmental influences such as temperature, humidity, or moisture. Conventional damp-proof courses with an external bitumen layer cannot be installed at low temperatures or in damp conditions.

[0007] The term 'butyl' encompasses all materials based on butyl rubber or polyisobutylene. In addition to their excellent adhesive properties, butyl rubber / polyisobutylene-based materials exhibit high gas and water impermeability while maintaining permanent flexibility. Combined with the aluminum barrier layer described below, this moisture barrier therefore possesses outstanding vapor and water barrier properties.

[0008] The butyl or bitumen layer can be made of bio-bitumen. Bio-bitumen is produced from renewable raw materials and is petroleum-free. For example, bio-bitumen can be made from algae, vegetable oils (e.g., palm oil, peanut oil, rapeseed oil), sugar, sugar molasses, rice, corn, potato starch, tree and rubber resins, natural latex, lignin, cellulose, dried wastewater residues, etc. This provides a resource-efficient and environmentally friendly moisture barrier.

[0009] Preferably, the butyl or bitumen layer has a thickness in the range of 0.2 mm - 2.0 mm, 0.2 mm - 0.8 mm, 0.6 mm - 1.3 mm, and more preferably in the range of 1.1 mm - 2.0 mm. Additionally or alternatively, the butyl or bitumen layer has a thickness of approximately 0.2 mm, 0.6 mm, 1.0 mm, 1.5 mm, or 2.0 mm.

[0010] The adhesive coating can be applied to the butyl or bitumen layer over the entire surface or almost the entire surface, ensuring full or substantially full adhesion to a substrate when the damp-proof course is installed.

[0011] Preferably, the adhesive coating has a thickness in the range of 0.1 mm - 0.3 mm, 0.1 mm - 0.16 mm, 0.14 mm - 0.2 mm, preferably in the range of 0.18 mm - 0.24 mm, and particularly preferably in the range of 0.22 mm - 0.3 mm. In particular, the adhesive coating has a thickness of approximately 0.1 mm, 0.2 mm, or 0.3 mm. These thickness ranges ensure good adhesion and compensation for unevenness in the substrate while simultaneously keeping the surface weight of the damp-proof course low, thus making it easy to handle.

[0012] Preferably, the adhesive coating has a basis weight between 20 g / m². 2 - 400 g / m 2 , preferably between 20 g / m² 2 - 140 g / m 2 , 120 g / m 2 - 260 g / m 2 , or 240 g / m² 2 - 400 g / m 2 on.

[0013] The adhesive coating can be applied to the butyl or bitumen layer by extrusion or calendering. The adhesive coating is preferably applied to the butyl or bitumen layer in liquid form.

[0014] Preferably, the adhesive coating is self-adhesive and / or cold-applied, and / or the adhesive coating can be applied down to -10°C, -8°C or -5°C, and / or the adhesive coating can be applied underwater. This means that the damp-proof course can also be used at low ambient temperatures and / or on damp substrates to which the damp-proof course is to be applied or adhered.

[0015] Preferably, the moisture barrier has a carrier layer arranged on one side of the butyl or bitumen layer opposite the adhesive layer. The carrier layer can have at least one of the following layers or is: an aluminum layer, a non-woven layer, a woven layer, a non-woven layer, at least one protective layer made of plastic, a layer made of a foamed plastic, or coated paper.

[0016] Preferably, the damp-proof course has a moisture-impermeable and / or vapor-barrier layer made of aluminum, which is bonded to the side of the butyl or bitumen layer opposite the adhesive coating. The aluminum barrier makes the damp-proof course vapor-tight or allows it to act as a vapor barrier with an SD value ≥ 1500 m. At the same time, the surface weight of the damp-proof course remains low, ensuring ease of handling. For example, when sealing a flat roof, the vapor barrier prevents rising damp from penetrating the insulation from the building interior. Such insulation is installed on top of the vapor barrier after its application. Finally, the insulation is sealed from above with a top layer. This top layer protects the insulation from external environmental influences, such as rain.

[0017] Preferably, the barrier layer has a thickness in the range of 5 µm - 25 µm, 6 µm - 20 µm, 7 µm - 15 µm or 8 µm - 10 µm. For example, the barrier layer has a thickness of approximately 7 µm.

[0018] The moisture barrier can have a protective plastic layer arranged externally on the side of the butyl or bitumen layer opposite the adhesive coating. If the moisture barrier includes the barrier layer, it preferably has a first protective plastic layer on the side of the barrier layer facing the adhesive coating and / or a second protective plastic layer on the side of the barrier layer facing away from the adhesive coating.

[0019] The material of the protective layer(s) is preferably selected from: polyethylene (PE), PP, PET, PS, low-density polyethylene (LDPE), high-density polyethylene (HDPE), medium-density polyethylene (MDPE), or linear low-density polyethylene (LLDPE). The density of HDPE, for example, is between 0.94 g / cm³. 3 up to 0.97 g / cm³ 3 The density of LDPE, for example, is between 0.915 g / cm³. 3 and 0.935 g / cm² 3 For example, a flame-retardant (FR) LDPE coating is used as a protective layer, e.g. with a density of 35 g / m². 2 .

[0020] Particularly preferred is the protective layer made of polyethylene terephthalate (PET) bonded to the butyl or bitumen layer. During the application of the butyl or bitumen layer in the production of the moisture barrier, the butyl or bitumen is heated to up to 130°C or even 150°C. The use of temperature-stable PET as a protective or carrier layer ensures that the moisture barrier is not damaged during application of the butyl or bitumen layer.

[0021] The use of PET offers the further advantage of increasing the density of the moisture barrier against water vapor. In particular, when using a PET protective layer with a higher density or a thicker / stronger protective layer, the density (thickness) of the aluminum barrier layer can be reduced without affecting the S d -Value of the vapor barrier reduced.

[0022] The protective layer(s) is / are preferably alkali-resistant, so that the two protective layers protect other layers, such as the non-alkali-resistant aluminum, from damage. Preferably, the protective layer(s) has a thickness of 7 µm to 50 µm, more preferably in the range of 9 µm to 30 µm, and particularly preferably 10 µm to 20 µm.

[0023] For example, the protective layer(s) have a thickness of approximately 12 µm. Additionally or alternatively, the protective layer has a basis weight of approximately 60 g / m². 2 -200 g / m 2 on, preferably in the range of 70 g / m² 2 - 150 g / m 2 , and particularly preferably in the range of 80 g / m² 2 - 120 g / m 2 , in particular a basis weight of or of approximately 100 g / m² 2 .

[0024] Preferably, the moisture barrier comprises a fleece layer arranged on one side of the butyl or bitumen layer opposite the adhesive coating. If the moisture barrier includes the barrier layer, the fleece layer can be arranged, in particular, on one side of the barrier layer opposite the butyl or bitumen layer, or between the barrier layer and the butyl or bitumen layer.

[0025] Preferably, the nonwoven layer is made of or formed from plastic fibers such as polypropylene (PP), polyethylene (PE), polyester, polybutylene terephthalate (PET), polybutylene terephthalate (PBT), polyamide (PA), from plant fibers, or from cellulose fibers. Particularly preferably, the nonwoven layer is formed as a spunbond nonwoven, especially as a hydrophilized (water-permeable) PP spunbond nonwoven.

[0026] The nonwoven layer preferably has a basis weight in the range of 50 g / m². 2 - 200 g / m 2 , preferably in the range of 10 g / m² 2- 160 g / m 2 , 20 g / m 2 - 140 g / m 2 , or 30 g / m² 2 - 120 g / m 2 on, particularly preferably a basis weight of or of about 100 g / m² 2 Preferably, when using the moisture barrier, the fleece layer faces upwards or outwards. This means, for example, that the aluminum separating layer faces the roof when installed on a flat roof. Because the aluminum is not facing upwards, it reduces glare for the installer, thus simplifying the installation process.

[0027] Preferably, the moisture barrier has a functional layer arranged on the side of the butyl or bitumen layer opposite the adhesive coating, wherein the functional layer is or comprises a non-woven fabric layer and / or a woven fabric layer. The functional layer can be arranged on the outside. If the moisture barrier has the barrier layer and / or the non-woven fabric layer, the functional layer is preferably arranged between the barrier layer and the butyl or bitumen layer or between the barrier layer and the non-woven fabric layer.

[0028] The functional layer can be a woven layer and / or a non-woven layer made of or containing a natural fiber, synthetic fiber, in particular HDPE, and / or glass fiber. For example, the functional layer can be made of polypropylene (PP), polyethylene (PE), polyester (PET), polyamide (PA), glass fibers, or blended and natural fibers (jute, hemp, cotton, linen). Preferably, the functional layer is formed as a woven fabric.

[0029] Preferably, the functional layer has a basis weight in the range of 20 g / m². 2 - 150 g / m 2 , 40 g / m 2 - 120 g / m 2 , or 50 g / m² 2 - 90 g / m 2 For example, the fabric layer has a basis weight of approximately 60 g / m². 2 on.

[0030] The fabric layer or weave is preferably a cross-linked (e.g., right-angled or nearly right-angled) thread system of longitudinal threads (warp threads) and transverse threads (weft threads), in which the threads pass over and under the transverse threads in a specific rhythm (weave pattern). The weave of the fabric, or the interweaving of the threads, creates a strong and dense bond that ensures high tensile strength and tear propagation resistance of the vapor barrier. During installation, mechanical damage to the vapor barrier can therefore be prevented, thus ensuring a tight seal against water and water vapor even under stress during or after installation. Preferably, the fabric layer is made of a natural fiber, glass fiber, or synthetic fiber (e.g., polyester or polyethylene (PE)).

[0031] The fabric layer can have a thread density in the longitudinal and / or transverse direction of between 3 and 15 threads / cm, preferably between 5 and 10 threads / cm, and particularly preferably between 3 and 7 threads / cm, and additionally or alternatively have a grid spacing in at least one (grid) direction of a maximum of 5 mm, preferably a maximum of 4 mm, and particularly preferably a maximum of 2 mm. The specifications for thread density and grid spacing refer to an average thread density and grid spacing, taking into account a manufacturing tolerance.

[0032] The moisture barrier can comprise a foam layer made of a foamed plastic, wherein the foam layer is arranged on the side of the butyl or bitumen layer opposite the adhesive coating. The foam layer is preferably made of cross-linked foam and / or polyethylene, polyolefin, or polyurethane. The foam layer can have a thickness in the range of 0.4–3 mm, preferably 0.8–2.5 mm, and particularly preferably 1–2 mm.

[0033] The individual adjacent layers of the moisture barrier can be joined together in various ways. Bonding, laminating, spraying, fusing, bonding, and hot pressing are particularly advantageous. Different methods can also be used to join the individual layers.

[0034] The butyl or bitumen layer and / or carrier layer and / or barrier layer and / or functional layer and / or first and / or second protective layer and / or nonwoven layer are preferably bonded together by gluing, laminating, spraying, fusing and / or hot pressing.

[0035] Preferably, the butyl or bitumen layer has an external adhesive coating of hot melt adhesive on both sides. Thus, the moisture barrier is adhesive on both sides.

[0036] Preferably, the adhesive coating(s) is / are fully or almost fully covered with a liner or protective covering that is / are removable for installation of the damp-proof course. For example, a protective covering made of paper, polyethylene (PE), polyethylene terephthalate (PET), or a combination of these materials. The protective covering is removable for installation of the damp-proof course.

[0037] Preferably, the vapor barrier is in roll form so that it can be easily transported and processed as rolled goods. For example, the vapor barrier can be supplied as rolled goods with a width between 0.1 m and 1.5 m. Preferred roll widths are: 30 cm, 40 cm, 50 cm, 75 cm, 100 cm, 110 cm, 120 cm, 140 cm, or 150 cm. Preferably, the vapor barrier has a roll length in the range of 10 m to 20 m, 10 m to 14 m, 13 m to 17 m, or 16 m to 20 m, and particularly preferably a roll length of approximately 15 m.

[0038] The following is an example of the horizontal installation of a sheet-like damp-proof membrane with adhesive strips for flat roof waterproofing, as described above. The damp-proof membrane can be cut to size before installation or applied directly from the roll to the substrate to be sealed. When installing the damp-proof membrane, the protective paper is peeled off slowly and evenly downwards while the membrane is carefully adhered to the substrate. Adjacent sheets should overlap by at least 50 mm to ensure a watertight damp-proof membrane. The overlap area must be carefully rolled.

[0039] The vertical installation of a sheet-like damp-proof course, as described above, for basement waterproofing is further illustrated. As substrate preparation, a bonding agent or primer is preferably applied thinly and evenly to the substrate or the exterior of the basement. For easier handling, the sheet-like damp-proof course is cut to size before installation and laid in strips from top to bottom. To do this, the backing paper is peeled back approximately 50 cm, and the cut strip is aligned with the top edge of the wall to be sealed and pressed down. Then, the backing paper is slowly and evenly peeled downwards while the strip is carefully adhered. As mentioned above, adjacent strips should overlap by at least 50 mm to ensure a tight damp-proof or waterproof barrier. The overlap area must be carefully rolled.

[0040] Alternatively, the damp-proof course can be used for horizontal sealing against rising damp (e.g., basement floors). It is preferable to prime the substrate before installation.

[0041] Additionally, the already attached damp-proof course can be sealed with a finishing tape. To do this, the top edges or the upward-facing (horizontal or vertical) edges of the damp-proof course are adhered to the finishing tape using self-adhesive tape, so that the tape overlaps the damp-proof course and the substrate above it. A suitably cut strip of the damp-proof course described above can be used as the finishing tape.

[0042] In a further, particularly preferred embodiment, several adjacent strips of the damp-proof course are provided as a continuous seal. The damp-proof course is advantageously designed as a continuous damp-proof course for sealing floor slabs, basements, flat roofs, trapezoidal roofs, concrete roofs, garage roofs, balconies, terraces, or wet rooms. The adjacent damp-proof course strips are preferably overlapped with an overlap area of ​​at least 40 mm, 50 mm, 60 mm, 80 mm, 100 mm, or 120 mm and / or, in particular, with an overlap area of ​​at most 120 mm, 100 mm, or 80 mm. Preferably, each sheet for the surface sealing arrangement has a width in the range of 80 to 150 cm, 100 to 180 cm, 120 to 220 cm, 140 to 250 cm, or 150 to 300 cm.

[0043] Furthermore, a flat roof with a continuous waterproofing system as described above is provided. Specifically, adjacent damp-proof courses are bonded to a corrugated or trapezoidal sheet metal roof, and insulation is installed on top of the damp-proof courses. A top layer is preferably applied to the insulation, making the flat roof watertight from above. The damp-proof course protects the insulation from rising damp, particularly moisture rising from the interior of the building through the roof. A surface protection layer, such as a gravel ballast, can be applied to the top layer.

[0044] Embodiments of the invention are explained in more detail with reference to figures. The figures show: Fig. 1 a schematic, not to scale, lateral sectional view of a damp-proof course according to a first embodiment, Fig. 2 a schematic, not to scale, lateral sectional view of a damp-proof course according to a further embodiment, Fig. 3 a schematic, not to scale, side sectional view of a damp-proof course according to a further embodiment, Fig. 4 schematically a moisture barrier glued onto a trapezoidal flat roof, and Fig. 5 A schematic, not to scale, lateral sectional view of an arrangement with a mounted or laid moisture barrier between a raw concrete floor and a screed.

[0045] Fig. Figure 1 shows a schematic, not to scale, lateral sectional view of a moisture barrier 2 according to a first embodiment for sealing buildings against moisture and / or rising vapor, and in particular for sealing, for example, wet rooms or flat roofs.

[0046] The damp-proof course comprises a butyl or bitumen layer 4 and an adhesive coating 6 made of a hot-melt adhesive, which is bonded to the butyl or bitumen layer 4. For example, the butyl or bitumen layer has a thickness in the range of 0.2 mm to 2.0 mm. The adhesive coating can have a thickness in the range of 0.1 mm to 0.3 mm and / or a basis weight in the range of 20 g / m². 2 - 400 g / m 2 have.

[0047] For example, the adhesive coating 6 can be applied to the butyl or bitumen layer 4 by extrusion or calendering. The adhesive coating 6 can be fully or almost fully covered with a liner or protective covering (not shown), which can be removed for the installation of the damp-proof course.

[0048] Thanks to the use of hot-melt adhesive, the damp-proof course can be applied even at very low temperatures, such as -10°C, -8°C, or -5°C. Furthermore, the damp-proof course can be applied underwater or to damp floor or wall surfaces, meaning the adhesive coating is water-resistant. This allows for installation of the damp-proof course even in winter, during rain, or in general damp conditions. Therefore, rapid installation of the damp-proof course is possible, largely independent of environmental factors such as temperature, humidity, or moisture.

[0049] Fig. Figure 2 shows a schematic, not-to-scale, side sectional view of a damp-proof course 2a according to a further embodiment. In contrast to the one in Fig. In the moisture barrier 2 shown in Figure 1, the moisture barrier 2a additionally has a carrier layer 8 on the side of the butyl or bitumen layer facing away from the adhesive coating. In this example, the carrier layer 8 has a protective layer 12 made of plastic, in particular HDPE. The protective layer 12 protects the butyl or bitumen layer from damage.

[0050] Fig. Figure 3 shows a schematic, not-to-scale, side sectional view of a damp-proof course 2b according to a further embodiment. In contrast to the one in Fig. In addition to the moisture barrier 2 shown in Figure 1, the moisture barrier 2b has an additional carrier layer 8 on the side of the butyl or bitumen layer facing away from the adhesive coating. In this example, the carrier layer 8 has a barrier layer 10 made of aluminum. The barrier layer 10 can have a protective layer 12 made of plastic on one or both sides. The protective layer protects the aluminum barrier layer from damage.

[0051] For example, the moisture barrier 2b can have the following structure: - optional: a first protective layer 12 made of plastic: preferably as a PET layer, approx. 12 µm, - an aluminum barrier layer 10: approx. 7 µm, - optional: a second protective layer 12 made of plastic: preferably as a PE layer, approx. 12 µm, - a butyl or bitumen layer 4: Thickness: 0.2 - 2.0 mm, - an adhesive coating 6 made of a hot melt adhesive, approx. 20-140 g / m² 2 , and - The dimensions (width x length) are: 1.5 m x 100 m.

[0052] The following describes various possible applications of the damp-proof courses 2, 2a, 2b described herein. In particular, the use of such a damp-proof course for sealing a flat roof within the framework of the Fig. 4 and its use for sealing a base plate within the framework of Fig. 5 described. As an example, in the Fig. 4 and Fig. Figure 5 shows the damp-proof course 2a, however any other damp-proof course 2, 2b described herein can also be used. The damp-proof course is glued to a trapezoidal sheet 24 or to a raw concrete floor 32 using the adhesive coating.

[0053] Fig. Figure 4 shows a flat roof arrangement 22, wherein the vapor barrier 2a is laid on a flat roof support 23 and in particular on a trapezoidal sheet 24 arranged on the flat roof support 23.

[0054] The following is an example of how to install a sheet-like vapor barrier 2a, as described above, as a flat roof waterproofing system that acts as a vapor barrier. The sheet-like vapor barrier 2a can be cut to size before installation for easier handling. Alternatively, it can be installed directly from the roll.

[0055] The protective film of the adhesive coating 6 of the moisture barrier 2a is removed during installation on the trapezoidal sheet 24, and the moisture barrier 2a with the adhesive coating 6 is pressed onto the upper trapezoidal sheet plateaus. Adjacent strips are laid overlapping (at least 5 cm) to create a tight moisture barrier or vapor barrier. This means that the butyl or bitumen layer 4 or the protective layer 12 is positioned facing away from the trapezoidal sheet 24 or points upwards. The overlap area must be carefully rolled. Fig. For simplicity, the moisture barrier 2a is shown as a continuous strip in Figure 4.

[0056] Preferably, insulation or thermal insulation 26 (e.g., polystyrene panels) is subsequently arranged on the top side of the installed damp-proof course 2a (i.e., on the protective layer 12). The damp-proof course 2a arranged beneath the insulation 26 prevents moisture from penetrating upwards from below (or from the building interior) into the insulation 26. The insulation 26 is preferably sealed from above by a waterproof top layer 28. A surface protection layer 30, for example in the form of a gravel ballast, can be arranged on the top layer 28.

[0057] As in Fig.Figure 5, shown schematically and not to scale, illustrates how, when using the described damp-proof course 2a, the damp-proof course 2a is bonded to a raw concrete floor 32 using a hot-melt adhesive coating. Screed 34 is then applied to the exterior of the damp-proof course 2a on the side opposite the adhesive coating 6, i.e., on the protective layer 12. Adjoining a wall 36, the damp-proof course 2a is extended upwards in a trough-like manner, thus providing a tight separation layer between the raw concrete and the screed. An edge insulation strip 38 is arranged adjacent to the wall 36 to decouple the screed 34 from the wall 36.

[0058] Alternatively, an insulating layer (not shown) made of a thermal insulation material such as polystyrene or mineral wool can be arranged between the moisture barrier 2a and the screed 34. Reference sign 2, 2a, 2b Damp-proof course 4 Butyl or bitumen layers 6 Hotmelt adhesive coating 8 Support position 10 Blocking position 12. Protective position 22 Flat roof arrangement 23 flat roof beams 24 Trapezoidal sheets 26 Insulation 28 Top layer track 30 Surface protection / gravel ballast 32 Raw concrete 34 screed 36 Wall 38 edge insulation strips

Claims

[1] Moisture barrier (2, 2a, 2b) for sealing against penetrating moisture and water and / or rising steam in buildings, comprising: a butyl or bitumen layer (4), and an adhesive coating (6) made of a hot-melt adhesive, which is bonded to the butyl or bitumen layer (4). [2] Moisture barrier according to claim 1, wherein the butyl or bitumen layer (4) has a thickness in the range of 0.2 mm - 2.0 mm, 0.2 mm - 0.8 mm, 0.6 - 1.3 mm, preferably in the range of 1.1 mm - 2.0 mm, and / or wherein the butyl or bitumen layer (4) has a thickness of or of about 0.2 mm, 0.6 mm, 1.0 mm, 1.5 mm or 2.0 mm. [3] Moisture barrier according to claim 1 or 2, wherein the adhesive coating (6) has a thickness in the range of 0.1 mm - 0.3 mm, 0.1 mm - 0.16 mm, 0.14 - 0.2 mm, preferably in the range of 0.18 mm - 0.24 mm, and particularly preferably in the range of 0.22 mm - 0.3 mm, and in particular has a thickness of or of approximately 0.1 mm, 0.2 mm or 0.3 mm, and / or wherein the adhesive coating (6) has a basis weight between 20 g / m 2 - 400 g / m 2 , preferably between 20 g / m 2 - 140 g / m 2 , 120 g / m 2 - 260 g / m 2 , or 240 g / m 2 - 400 g / m 2 has. [4] Moisture barrier according to claim 1, 2 or 3, wherein the adhesive coating (6) is applied over the entire surface or almost over the entire surface of the butyl or bitumen layer (4), and / or wherein the adhesive coating (6) is applied to the butyl or bitumen layer (4) by extrusion or calendering. [5] Moisture barrier according to one of the preceding claims, wherein the adhesive coating (6) is self-adhesive and / or cold-adhesive, and / or wherein the adhesive coating (6) is processable down to minus 10°C, -8°C or -5°C, and / or wherein the adhesive coating (6) can be processed under water. [6] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2a, 2b) has a carrier layer (8) which is arranged on a side of the butyl or bitumen layer (4) opposite the adhesive layer (6). [7] Moisture barrier according to claim 6, wherein the carrier layer comprises at least one of the following layers: aluminum layer (10), nonwoven layer, fabric layer, scrim layer, at least one protective layer (12) made of plastic, a layer made of a foamed plastic, coated paper. [8] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2a, 2b) comprises a moisture-impermeable and / or vapor-barrier barrier layer (10) made of aluminum, which is connected to a side of the butyl or bitumen layer (4) opposite the adhesive coating (6). [9] Moisture barrier according to claim 8, wherein the barrier layer (10) has a thickness in the range of 5 µm - 25 µm, 6 µm - 20 µm, 7 µm - 15 µm or 8 µm - 10 µm, in particular a thickness of or about 7 µm. [10] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2a, 2b) has a protective layer (12) made of plastic, which is arranged on the outside on a side of the butyl or bitumen layer (4) opposite the adhesive coating (6), wherein the moisture barrier (2a, 2b) preferably has a first protective layer (12) made of plastic on the side of the barrier layer (10) facing the adhesive coating (6) and / or a second protective layer (12) made of plastic on a side of the barrier layer (10) facing away from the adhesive coating (6). [11] Moisture barrier according to claim 10, wherein the material of the protective layer(s) (12) is selected from: polyethylene (PE), PP, PET, PS, low-density polyethylene (LDPE), high-density polyethylene (HDPE), medium-density polyethylene (MDPE), or linear low-density polyethylene (LLDPE), and / or whereby the protective layer(s) is / are alkali-resistant. [12] Moisture barrier according to claim 10 or 11, wherein the protective layer (12) has a thickness of 5 µm - 30 µm, preferably in the range of 5 µm - 25 µm, and particularly preferably 10 µm - 20, in particular a thickness of or of about 12 µm, and / or wherein the protective layer (12) has a basis weight in the range of 60 g / m 2 -200 g / m 2 preferably in the range of 70 g / m 2 - 150 g / m 2 , and particularly preferably in the range of 80 g / m 2 - 120 g / m 2 , in particular a basis weight of or about 100 g / m 2 . [13] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2, 2a, 2b) comprises a fleece layer arranged on a side of the butyl or bitumen layer (4) opposite the adhesive coating (6), and wherein in particular the nonwoven layer is arranged on a side of the barrier layer opposite the butyl or bitumen layer (4) or between the barrier layer and the butyl or bitumen layer. [14] Moisture barrier according to claim 13, wherein the nonwoven layer is made of plastic fibres such as polypropylene (PP), polyethylene (PE), polyester, polybutylene terephthalate (PET), polybutylene terephthalate (PBT), polyamide (PA), vegetable fibres or cellulose fibres, and / or wherein the nonwoven layer is formed as a spunbond. [15] Moisture barrier according to claim 13 or 14, wherein the nonwoven layer has a basis weight in the range of 50 g / m 2 - 200 g / m 2 , preferably in the range of 70 g / m 2 - 160 g / m 2 , 90 g / m 2 - 140 g / m 2 , or 100 g / m 2 - 120 g / m 2 particularly preferably a basis weight of or about 100 g / m 2 . [16] Moisture barrier according to one of the preceding claims, further comprising a functional layer which is arranged on a side of the butyl or bitumen layer (4) opposite the adhesive coating (6), wherein the functional layer is or comprises a scrim layer and / or fabric layer, and wherein the functional layer is arranged in particular on the outside or between the barrier layer (10) and the butyl or bitumen layer (4) or between the barrier layer (10) and the nonwoven layer. [17] Moisture barrier according to claim 16, wherein the functional layer is a fabric layer and / or scrim layer made of or with a natural fiber, plastic fiber, in particular HDPE, and / or glass fiber. [18] Moisture barrier according to claim 16 or 17, wherein the functional layer has a basis weight in a range of 20 g / m 2 - 150 g / m 2 , 40 g / m 2 - 120 g / m 2 , or 50 g / m 2 - 90 g / m 2 has. [19] Moisture barrier according to claim 16, 17 or 18, wherein the functional layer is or comprises a leno fabric. [20] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2, 2a, 2b) comprises a foam layer made of a foamed plastic, wherein the foam layer is arranged on a side of the butyl or bitumen layer opposite the adhesive coating, and wherein the foam layer is preferably made of cross-linked foam and / or of polyethylene, polyolefin or polyurethane. [21] Moisture barrier according to claim 20, wherein the foam layer has a thickness in the range of 0.4 - 3 mm, preferably 0.8 - 2.5 mm and particularly preferably 1 mm - 2 mm. [22] Moisture barrier according to one of the preceding claims, wherein the butyl or bitumen layer (4) and / or carrier layer (8) and / or the barrier layer (10) and / or the functional layer and / or the first and / or second protective layer (12) and / or the nonwoven layer are connected to one another by means of gluing, laminating, spraying, fusing and / or melt pressing. [23] Moisture barrier according to one of the preceding claims, wherein the butyl or bitumen layer (4) has an external adhesive coating (6) made of a hot-melt adhesive on both sides. [24] Moisture barrier according to one of the preceding claims, wherein the adhesive coating(s) (6) is / are covered over its entire surface or almost over its entire surface with a liner or a protective cover which is / are removable for laying the moisture barrier. [25] Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2, 2a, 2b) is web-shaped, and preferably has a web width in the range of at least 100 cm, 110 cm, 120 cm, 140 cm or 150 cm, and / or preferably has a web length in the range of 10 m - 20 m, 10 - 14 m, 13 - 17 m or 16 - 20 m, particularly preferably a web length of or about 15 m. [26] Flat sealing arrangement with at least two or more than two adjacently laid sheets of moisture barriers (2, 2a, 2b) according to one of claims 1 to 25. [27] A flat sealing arrangement according to claim 26, wherein adjacent webs are laid overlapping in their edge region, in particular with an overlapping area of ​​at least 40 mm, 50 mm, 60 mm, 80 mm, 100 mm or 120 mm and / or in particular with an overlapping area of ​​at most 120 mm, 100 mm or 80 mm. [28] Surface sealing arrangement according to claim 26 or 27, wherein the sealing arrangement is used to seal: a floor slab, a cellar, a flat roof, a garage roof, a balcony, a terrace or a wet room. [29] Flat roof (22) with a planar sealing arrangement according to claim 26, 27 or 28, wherein in particular the adjacent moisture barriers (2, 2a, 2b) are glued onto a corrugated or trapezoidal sheet metal roof (24) and an insulation (26) is arranged on the moisture barriers.

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