DE102005044051A1 - Building roof as well as insulating layer construction and mineral fiber insulating element for a building roof - Google Patents

Abstract

The invention relates to a building roof (1), preferably with a flat or flat inclined embodiment, consisting of a roof infrastructure (2) especially consisting of profiled metal sheets, a heat insulating layer which is arranged on said infrastructure and consists of at least one resilient mineral fibre insulating element (4), and at least one device for fixing the mineral fibre insulating element to the roof infrastructure, said mineral fibre insulating element comprising at least two essentially parallel large surfaces (10, 16) arranged at a distance from each other. The aim of the invention is to provide an improved building roof, wherein mineral fibre insulating elements, that can be produced and integrated in a simple and cost-effective manner and especially have the required mechanical properties, such as especially high resistance to pressure, can be used as a component of the insulating layer structure. To this end, the mineral fibre integrating element consists of a meandering mineral fibre strip comprising a plurality of parallel sections (9), said sections and the mineral fibres (15) thereof extending essentially at a right angle to the large surfaces (10, 16), and adjacent sections, at least in the region of a large surface (10,16), being interconnected by means of deviation regions (11).

Description

The The invention relates to a building roof, preferably in flat or flat-inclined design, consisting of a Roof substructure, in particular profiled sheets, and a arranged thereon thermal barrier coating from at least one resistant mineral fiber insulating element and at least a device for fixing the Mineralfaserdämmstoffelementes at the roof substructure, wherein the mineral fiber insulating element two substantially parallel and spaced from each other arranged large surfaces having. Furthermore, the invention relates to an insulating layer structure for a in particular flat or flat inclined building roof consisting of a Roof substructure, in particular profiled sheets, and at least a device for fixing at least one resistant mineral fiber insulating element at the roof substructure, wherein the mineral fiber insulating element two substantially parallel and spaced from each other arranged large surfaces having. After all The invention relates to a Mineralfaserdämmstoffelement for flat or flat sloped roofs from a meandering trained mineral fiber web, which are several parallel to each other having extending webs, wherein the webs and their mineral fibers extend substantially perpendicular to the large surfaces and that at least in the range of a large one surface adjacent bridges over Deflection areas are interconnected.

Out the prior art are lightweight thermally insulated flat roof constructions known, often the upper end of a building, such as a manufacturing and / or a warehouse, a meeting place or the like and have a load-bearing roof shell, for example, composed of profiled steel sheets or made of cast-in-place concrete, wood and wood-based panels, concrete or lightweight concrete elements. To ensure a safe expiration of rainfall from the flat roof construction, the roof shell, in particular the profiled steel sheets under consideration the sag of the easily deformable roof shell with a sufficient gradient attached to a correspondingly designed substructure. The steel sheets have a profiling in the downward direction, So in the direction of first-eaves or even across it is placed.

Around a water vapor diffusion from the building interior into the flat roof construction to reduce and air exchange over the flat roof construction Safely prevent, above the load-bearing roof shell a Arranged airtightness layer, which is usually made of relatively thin plastic or plastic-metal composite films consists of loose laid or presented here by way of example Flat roof construction on top straps of the profiled steel sheets glued on. Very important here is a permanently airtight Connection of the airtightness layer with adjacent components or in the area of penetrations.

On the air-tightness layer is arranged a thermal barrier coating, for example from large format non-combustible rockwool insulation elements with a melting point of 1000 ° C after DIN 4102 Part 17 exists. These insulating elements must be the for the Application type WD according to DIN 18165-1 or the field of application DAD-dm according to DIN V 4108-10 required strength values and example a compressive stress ≥ 40 kPa, a tensile strength perpendicular to the plate plane ≥ 7.5 kPa and have a point load capacity at 5 mm compression ≥ 500 N. In the preparation of a building roof have to the insulating elements additional be sufficiently firm to be dynamic, triggered by step movements Absorb shear forces to be able to.

Rock wool insulation elements consist of binder-bound mineral fibers, the proportion of binder is limited by the requirements for non-combustibility of such insulation elements. In order to achieve the strength values mentioned above, therefore, a sufficiently large proportion of fiber is required, that is, the bulk densities of insulating panels formed from the insulating elements are usually more than about 120 kg / m ³ , in addition to the individual mineral fibers in the steepest possible storage the large surfaces of such insulation boards are brought.

In order to arrange the mineral fibers in an appropriate orientation, that is the steepest possible storage to the large surfaces, a impregnated with binders and additives mineral fiber web is subjected to an intensive blending. The binders used are mixtures of thermoset-curing phenol, formaldehyde and / or urea resins which, inter alia, contain small amounts of adhesion-promoting silanes. The amount of binder is limited to less than 12% by mass in order to obtain the character of a non-combustible insulating material. As a rule, insulating materials made of mineral fibers with a maximum binder content of 4.5% by mass. As additives hydrophobic mineral oils, silicone oils and resins and / or organically modified silanes are provided. These additives also provide a slight adhesion of the mineral fibers together, thus reducing the Freiset tion of fine components and mineral fiber fragments of the insulating material, but are not considered binders in the strict sense.

The Production of Mineralfaserdämmelementen takes place on a conveyor discarded mineral fibers that are fiberized from a melt. The on the conveyor stored mineral fibers are essentially parallel to the big one surfaces as the primary fleece designated mineral fiber web aligned. The primary fleece becomes subsequently unfolded and as a secondary fleece an intensive compression in the conveying direction and / or perpendicular to the large surfaces of the secondary web subjected. The hereby achieved structure of the secondary web will follow by curing or hardening of the binder fixed in a curing oven. By the Compression in only two directions, the mineral fibers remain transverse to the conveying direction predominantly in horizontal storage. This orientation of the mineral fibers causes that the bending tensile strength in this direction is substantially three times is as high as in funding and / or direction of composition. The relative deformability that is called also the lower shear resistance in this direction goes hand in hand with a higher one ability gap of the secondary web. To this secondary web individual sections are used as insulating panels separated. These insulation boards are usually tuned in one to the means of transport Width of usual way 1.2 m separated, with the length the insulation boards with the width of the secondary fiber web of 2 m, for example. In order to take advantage of the high bending tensile strength in the longitudinal direction, be the insulation boards generally laid transversely to the profile direction of the steel sheets.

In order to exploit the high bending tensile strength of the thermal insulation panels in production transverse direction, they are separated according to their width from the endless insulating material web and then laid transversely to the profile direction of the trays sheet metal. The compressions of the fiber web are effected by pressure and shear forces acting on the two large surfaces. The fixation of the final structure is carried out by the solidification of the binder, for which purpose the fiber web is guided in a curing oven between two superposed conveyors. By their effects, the fibers in both large surfaces and the immediately underlying layers are aligned parallel or flat to the large surfaces. The surveys on the large surfaces, which are due to the fact that the fibers have been pressed into the openings of the printing bands of the curing oven, play no role in this case. The surfaces of these insulation boards are now limited footstep. A significant increase in the resistance of the surface, in particular the surface lying above and thus committed surface is to divide the fiber web horizontally before the solidification of the binder. In this case, the upper layer is highly compressed and reunited with the fibrous web, which in the meantime has been expanded by upsetting. The resulting thermal insulation panels thus have about 10 to about 25 mm thick, to about 180 to about 210 kg / m ³ compressed surfaces, while the main part of the insulation board gross densities of at least 120, preferably> 130 kg / m ³ , The location of the fibers in the surfaces and near-surface layers, their densification and the composition of the underlying fiber masses lead to high compressive strength and with regard to the attachment of flexible roof seals by means of screws and pressure plates to high point loads, which is also in the writings of manufacturers especially is exposed.

In these surfaces can now elongated cutting, for example, U-shaped Rails made of thin Do not push plates or push them in only slightly. Although thin sheets a greater cutting effect in the pulp, it comes here rather to a kinking of Legs of the rails, as that required the fiber mass in the Way is split.

The steep storage of mineral fibers leads to a high compressive strength or point load capacity of the insulation board produced from the mineral fiber web on a level surface. But there point charges on the Undergings of the profiled steel sheets to considerable shear stresses in the insulation board to lead, It may just because of the orientation of the mineral fibers to damage the insulating layer leading to the breaking of the individual insulation boards. The relatively heavy and resilient spring mineral wool insulation boards to lead Although due to their own weight to an additional, albeit uniform deformation and thus ultimately to a flat surface of the thermal barrier coating, but at the same time dampen the mineral wool insulation boards those triggered by wind loads Vibrations of the roof shell clearly.

Above the thermal barrier coating the actual sealing of the flat roof construction is arranged, which often consists of webs of plastics or elastomers or bonded bitumen membranes. These tracks are usually 1 m or 1.2 m wide and are connected in the edge region with the help of screws through the thermal insulation and the air-tightness layer through with the supporting roof shell. If the roof shell consists of the above-described profiled steel sheets, the connection of the webs takes place basically in the region of the upper chords of the steel sheets means in the adjacent to the thermal insulation or airtightness layer areas of the steel sheets. For this purpose, self-tapping screws are used, the tips of which are designed as drills and whose average pull-out values are generally dependent on the sheet thickness and the shape of the thread or a molded sheet bead and average 0.2 kN.

The Drilling screws have a second thread below a head on. The material-appropriate contact pressure on the airtightness layer and the thermal barrier coating mostly by elongated, in Stiffened metal plate with rounded narrow sides, the Dimensions of, for example, 40 mm × 82 mm. To carry out a self-drilling screw the metal plate has a central bore, the metal plate is formed in the region of the bore such that the head of the drill screw sunk in the plate is arranged.

Next the already mentioned above second Thread of the drill screw below her head points the drill screw a first upper thread, which is a passage of the head through the roofing, namely on the thermal barrier coating arranged tracks prevented. The screws are edge-sided the webs are arranged in rows so that a next line of roofing over the Screw away and in the edge region with the already mechanically fixed path through Gluing or welding is connected. By an overlap adjacent tracks of the roofing the screws are covered.

Flat roof constructions of the embodiment described above have higher wind suction loads in their edge and corner areas, so that the distances between the rows of screws must be significantly reduced and the number of screws must be increased to 8 or 12 pieces per m ² . The screws are strapped so that they can be set using powerful motor-driven screwdrivers. This approach has largely pushed the use of conventional pressure transmitting rails with corresponding holes for the screws in the background.

The resistance of the attachment of the thermal barrier coating is largely determined by the strength of the insulating elements. This strength of the insulating elements is not constant, but falls under the effects of pressure, train, humidity, temperature and time, so that sets over the lower level compared to the initial level of strength over time. At high initial strength values, it is therefore attempted to at least partially compensate for this reduction in strength. For this purpose, high preloads are selected by tightening the drill screws with a high torque, so that the pressure-compensating metal plates are drawn into the insulating elements even with insulating elements with high strength. As a result, unwanted accumulations of water and dirt deposits form on these points on the roof seal. In order to avoid this effect, insulation boards made of mineral fibers are used, which have an approx. 15 to approx. 25 mm thick, mostly 180 to 220 kg / m ³ compacted surface layer and therefore allow comparatively high point loads. Nevertheless, the large number of built-in such a flat roof metal parts, especially the many self-drilling leads even at higher, the increased demands on the structural thermal insulation adapted insulation thicknesses to greater heat loss, since the self-drilling form even in the above-described arrangement thermal bridges.

Out The prior art further discloses inclined roof structures. often with sheets of, for example, aluminum, copper, titanium zinc, hot-dip galvanized steel, austenitic steels, lead or the like are covered. The individual cover elements are called coulters and from ribbons and metal sheets. Here, folding and strip roofs are differentiated. With folding roofs The connection of the individual shares with each other mostly in the form of single or double standing seams or angle folds. The attachment of the shares is done by adhesive. There will be fixed and Sliding or sliding formed, the latter being thermally induced longitudinal movements allow the coulters should. The adhesives are made of narrow metal strips and will made of suitable materials with prescribed minimum thickness ≥ 0.4 mm Stainless steel, ≥ 0.6 mm for galvanized sheet steel and ≥ 0.7 mm for titanium zinc or ≥ 0.8 mm produced in aluminum. The sliding covers have either slots or a correspondingly movable top to a movement of the Allow coulters relative to the adhesive.

For the attachment of the coulters holder are provided, which have a correspondingly designed headboard. An example of such a holder is in the DE DE 297 12 794 U1 described. This known holder consists of a head part for supporting the shares and a foot part for coupling the holder with a support structure. Between the head part and the foot part, a connection back is provided. The foot part is arranged in a support element which is movably coupled to the foot part. The foot part may be plate-shaped or round in cross-section, the support element having a corresponding thereto Shaping has.

The Sticks and holders are in a rabbet joint between adjacent ones Locking involved and at a welding connection with the paw welded. The holder, for example, by means of countersunk screws with the Connected underground.

Width and length of the pawls, material thicknesses, number and distance of the adhesions are specified for example in DIN 18339. Standard Scharrenbreiten of Scharren are 520, 620, 720 and 920 mm. For the attachment of pawls with Klemmfalz compounds, the adhesions consist partly of extruded solid metal bodies with rounded heads. The number and the distance of the adherences depend on the width of the plow, length, building height, the position within the roof surface and amount to ≤ 500 mm to 210 mm to approx. 4 to 8 pieces per m ² . The sticks usually have a constant length, so that deflections of the supporting roof shell are transferred to the roofing.

at inclined roof structures is also a vapor-retarding airtightness layer provided on which the thermal barrier coating arranged, for example, from rollable lightweight mineral wool Dämmfilzen consists. The individual layers of mineral wool Dämmfilze are, as far as the base points the adhesive and these allow themselves, largely dense. such Mineral wool Dämmfilze are very compressible, so they relate in the wrapped state be compressed to their respective thickness by about 40 to about 70% can. As a rule, such mineral wool insulating felts with an excess thickness relocated to a full-surface To ensure the rearing of the flock whereby the sound insulation is significantly improved.

On the thermal barrier coating can for damping from through rainfall caused acoustic impairment, for condensate drainage and to reduce the risk of corrosion the processing metal parts be provided a separating layer, the plastic fibers swirling in on a water vapor permeable, However, water-repellent plastic random fiber fleece is applied. However, such a roof construction has significant disadvantages on, because in big Number of used adhesives represent massive thermal bridges. their thermally conductive Effect can only be reduced by reducing it to less thermally conductive Layers or on hollow bodies made of synthetic or mineral fiber materials.

From the EP 1 445 395 A1 profile elements are known, which are formed in cross-section substantially U-shaped, so that these profile elements have two legs and a web connecting the legs, wherein the legs are aligned at right angles to the web. At least one leg has at its free end on a cutting edge, which makes it possible to insert the leg in a simple manner in an insulation board, in particular a mineral fiber insulation board with a density of 120 kg / m ³ . It can be provided that for this purpose a groove is milled into the insulation board. In addition, the leg has a running in the longitudinal direction of the profile element bead, which makes it possible to lower the material thickness of the profile element to less than 1.6 mm, without thereby causing strength problems in the region of the inserted into the insulation plate leg. The leg should be pressed so far in the insulation board, that the web is slightly sunk into the surface of the insulation board to form a flat surface of an insulating layer.

At Such a profile element is attached to adhesions which are in cross-section essentially Z-shaped are formed and with a leg on the web of the profile element rest. The attachment of the adhesive on the profile element is effected by embossing two points, allowing a rotation of the adhesive relative to the profile element is difficult. Such profile elements are at a distance from each other and laid parallel to each other, wherein the profile elements at right angles to the longitudinal direction the coulters are aligned. But there is also the possibility the profile elements at any angle to the longitudinal axis to arrange the shares.

Furthermore, from the DE 44 18 90 A1 a substructure for bivalve roof systems known, which is equally suitable for roofing of tiles, trapezoidal sheets, Welleternit or a Spenglerfalzdach. This substructure for a two-shell roof system has a thermal barrier coating, which rests on the upper chords of a lower trapezoidal sheet with the interposition of a vapor barrier. In the thermal barrier coating U-shaped profiles are used in cross-section, which are connected by screws with the trapezoidal sheets. The thermal barrier coating consists of impact-resistant mineral fiber insulation boards with a density of 120 kg / m ³ .

Another roof construction and a method for sealing a roof is further from the DE 195 49 026 A1 known. The roof structure according to this document has in cross-section U-shaped profile elements, which are connected via rivets with a arranged below a thermal barrier layer roof shell made of trapezoidal steel sheets in cross section. The profile elements thus have a web and two parallel to each other aligned, arranged at the end of the web leg, which are pressed into the thermal barrier coating. The thermal barrier coating consists of impact-resistant mineral fiber insulation panels that can be walked on without significantly deforming under the load of the installation personnel. Through the use of rivets with respect to screws greater Auszugswerte there is the possibility to reduce the number of fasteners between the profile elements and the roof shell, so that the number of possible thermal bridges is significantly reduced. On the outer surfaces of the profile elements are welded or glued roof sealing materials arranged, which are connectable with roofing membranes arranged thereon.

Of the substantial disadvantage of the prior art known from this prior art Profile elements is that they are not in the desired Shape and not with a high processing speed in the Press in as mineral wool insulation boards described as impact resistant. There is a risk that the profile elements and / or the insulation panels when impressed in the thermal barrier coating damaged or destroyed so that the expected properties of each Construction elements not met become. The impressions the profile elements in the thermal barrier coating usually done with the foot, so that about it In addition, arranged on the web roofing materials damaged or can be removed.

Around To avoid these disadvantages, it is in the practice-oriented design a corresponding roof construction usual that before insertion the profile elements grooves in the surface of the previously designed thermal barrier coating be cut. For this special machines are used so that the grooves are cut straight and at a constant distance from each other can be. The cutting of the grooves but makes a time-consuming Procedure and is only by well-trained professionals executable.

at a width of the web of a profile element of significantly below 100 mm and accordingly close to each other lying grooves about it an island-like clipping This will be the pressure distributing Effect of a high-density surface layer of the insulation elements largely canceled. For grooves milled transversely in inclined thermal barrier coatings The inserted profile element can only with the lower lying Support legs on the highly compressed surface layer, since the shear strength of the insulating element formed by the milled grooves is low.

Finally, out of the EP 0 969 160 A2 another roof construction is known, which has a load-bearing substructure, a covering of profiles and corresponding holders and bolt-shaped fastening elements, wherein the holder with the substructure on the fasteners tensile strength ver prevented. In this roof construction, a modular belt is provided, which rests on the substructure and has a dimensionally consistent with the module dimension of the profile sheet division, the holders are placed according to the classification on the module belt. In this building roof the milling of grooves is avoided. However, the edges of the modular belt are slightly bent, wherein the modular belt engages with the bent areas in the surface of the insulating material layer, without damaging this insulating layer. The slight intervention of the bent portions of the module band causes the module band after tightening the fasteners, namely the screws, immovably disposed on the thermal barrier coating.

The preparation of such insulating elements is for example in the US 5,981,024 described. The previously known from this document insulation elements have a web-like arrangement. The above-described orientation of the mineral fibers at right angles to the large surfaces or in a steep storage for this serves primarily to increase the transverse tensile strength of the insulating elements at right angles to the large surfaces. By the web-like arrangement, the rigidity is increased parallel to the orientation of the web-like arrangement.

outgoing From this prior art, the invention is based on the object an improved building roof to create at the mineral fiber insulation elements as an ingredient an insulating layer construction can be used, which in a simple and cost-effective manner manufactures and can be installed and in particular the required mechanical properties, in particular, have a high compressive strength.

The solution this task looks at a building roof according to the invention before that the mineral fiber insulating element from a meandering Mineral fiber web consists of several parallel to each other Has webs, wherein the webs and their mineral fibers in extend substantially perpendicular to the large surfaces and that at least in the range of a large one surface adjacent bridges over Deflection areas are interconnected.

In an insulation according to the invention Layer structure is provided to solve the problem that the Mineralfaserdämmstoffelement consists of a meandering mineral fiber web having a plurality of mutually parallel webs, wherein the webs and their mineral fibers extend substantially perpendicular to the large surfaces and that at least in the region of a large surface adjacent webs About deflection areas are interconnected.

Finally is in a mineral fiber insulating element according to the invention as a solution The task provided that set up in the area of a large surface Mineral fibers are arranged.

Further Features and advantages of the building roof according to the invention, the Dämmschichtaufbaus invention and the mineral fiber insulating element according to the invention as well as their developments emerge from the subclaims and the following description.

With the building roof according to the invention it is possible the thermal barrier coating from a Mineralfaserdämmstoffelement form, which in a simple way from a meandering deposited mineral fiber web is formed, wherein the Mineralfaserdämmstoffelement Has a plurality of mutually parallel webs. In these Webs run the mineral fibers substantially at right angles to the big ones surfaces of Mineralfaserdämmstoffelementes. In each case between two adjacent webs is a deflection area arranged in which the mineral fibers from their orientation at right angles to the big ones surfaces of Mineralfaserdämmstoffelementes are deflected and a gradient obliquely up to parallel to the large surfaces of the Mineralfaserdämmstoffelementes have. The design of Mineralfaserdämmstoffelementes webs with the above-described course of mineral fibers leads to a predominantly pressure-resistant mineral fiber insulating element. A certain compressibility and thus adaptability of the mineral fiber insulating element to the installation conditions is due to the orientation of the mineral fibers in the deflection areas given. The above statements meet also to a Dämmschichtaufbau invention for a in particular flat or flat inclined building roof.

To a development of the building roof according to the invention is provided that the roof substructure made of trapezoidal sheets with parallel to each other aligned upper chords and lower chords and that the Mineralfaserdämmstoffelement on at least two adjacent and spaced apart Upper straps rests. Due to the design of Mineralfaserdämmstoffelementes a penetration resistance is also given if the mineral fiber insulating element in the Area between its bearing surfaces on the upper girths and thus burdened above the lower belt.

A Further development of this embodiment sees suggest that the mineral fiber insulating element with the longitudinal axes the webs transverse to the longitudinal axes the upper and lower straps are arranged on the roof substructure is.

By this arrangement of Mineralfaserdämmstoffelementes relative to the upper straps and the lower straps of the roof substructure becomes the stability of the building roof and in particular the Dämmschichtaufbaus improved under pressure load.

Preferably is between the roof substructure and the Mineralfaserdämmstoffelement arranged a seal, in particular an air-tightness layer. It has proved to be advantageous, the seal a tear-resistant film, for example, an elastomer-metal composite foil, an elastomer-bitumen-metal composite foil, a Form bitumen sheet with metal inserts or a metal foil. Such a seal supports that Mineral fiber insulating element or the Dämmschichtaufbau additional and carries thus contributing to the fact that the Dämmschichtaufbau with high specific pressures is resilient.

alternative or in addition the seal can be made of load-bearing metal sheets laid on the roof substructure consist. Another alternative of the design of the seal is that the seal formed of a polyethylene film is.

Preferably is the seal with the roof substructure and / or the Mineralfaserdämmstoffelement connected, in particular glued, wherein a polyurethane adhesive has proven to be an advantageous adhesive. By connecting the seal with the roof substructure is the pressure load capacity of the insulation layer construction further improved because the seal, for example, on the upper straps fixed the roof substructure and arranged above the intermediate Under strap is stretched, so when using a tear-resistant Sealing this seal the insulation layer structure, in particular the mineral fiber insulating element supported.

In a further feature of the invention, provision is made for the mineral fiber insulating element to have mineral fibers set up in the area of its large surface remote from the roof substructure. The mineral fiber insulating material For this purpose, the surface is treated with a brush or otherwise roughened in this surface area. This results in a flexible, a contour of a roof covering following surface of Mineralfaserdämmstoffelementes, which causes a Antidröhneffekt and thus contributes to an improved soundproofing effect. In particular, in this case the mineral fibers are placed, which are aligned obliquely or parallel to the large surface and thus arranged in the deflection areas.

alternative can be provided that in the deflection areas between adjacent ridges running parallel and / or obliquely to the large surfaces Mineral fibers are removed. As a result, the compressibility of Mineralfaserdämmstoffelementes reduced to the surface of the Mineral fiber insulating element for example, with frosted transport equipment during the construction phase, but also in the course of maintenance and / or repair work to be able to.

Farther can be complementary be provided that the Mineralfaserdämmstoffelement in the field of his the roof substructure facing large surface has a lamination. The lamination can replace or supplement the seal. Preferably the lamination is full surface on the big one surface of Mineralfaserdämmstoffelementes educated.

It but it is also possible the lamination part of the area, in particular form strip-shaped, it has proved to be advantageous, the individual strips the lamination in particular transversely to the longitudinal axis of the webs running on the big surface to arrange, so that the strip-like lamination in addition to Contributing breakage stiffness of Mineralfaserdämmstoffelementes. A Such a configuration is particularly in connection with the above described seal advantageous.

The Lamination is preferably formed tensile strength to complement the To increase the compressive strength of Mineralfaserdämmstoffelementes.

To Another feature of the invention is that the lamination with the mineral fiber insulating element is bonded, wherein between the lining and the Mineralfaserdämmstoffelement in particular, a layer of a polyurethane adhesive is arranged.

alternative For this purpose, it may be provided that the lamination as a bitumen layer is formed, preferably with a mesh fabric of, for example Glass fibers, plastic fibers and / or metal fibers is reinforced.

Instead of a lamination of a flat Structure may alternatively be provided that the Mineralfaserdämmstoffelement in the area of its the roof substructure facing large surface a between the mineral fibers introduced impregnation and / or on the mineral fibers applied coating from one of the area below the big one surface having solidifying and / or compacting mass.

The For example, mass may be made of a hot bitumen, a bitumen emulsion, a fiber reinforced Bitumen plastic compound and / or a plastic-coated tile adhesive exist and preferably has a reinforcement of fibers, in particular Mineral fibers, plastic fibers and / or metal fibers. The crowd densifies and / or solidifies the Mineralfaserdämmstoffelement in the area of a huge Surface, namely the on the roof substructure resting large surface, so that the compressibility of Mineralfaserdämmstoffelementes is reduced in this area. Furthermore, the mass connects the adjacent webs of Mineralfaserdämmstoffelementes both in the areas where adjacent ridges through deflection areas connected as well as in the areas where adjacent webs not connected by deflection areas are.

To a further feature of the building roof according to the invention it is provided that the Device for fixing the Mineralfaserdämmstoffelementes on the roof substructure at least a profile rail and the rail with the roof substructure has connecting screws. It has surprisingly been found that the Profile rails, in particular with a U- or L-shaped Cross-section, in a simple manner in a corresponding Mineralfaserdämmstoffelement pressed can be. This gives you the opportunity that profile rails of great Length used can be and be pressed in any direction in the surface of Mineralfaserdämmstoffelementes. For example, it is advantageous that the profile rails in the Area of adjacent webs are easily pressed with a leg. If the mineral fibers are additionally removed in the deflection areas, so the installation of a cross-sectionally U-shaped rail is continuing facilitated.

The mineral fiber insulating elements used in this case can have densities of more than 70 kg / m ³ , in particular more than 90 kg / m ³ , for use in a building roof. The use of several meters long in cross-section U-shaped rails leads to a significant reduction in the cost of a corresponding building roof, since on the one hand Her position long rails cheap and the processing of the corresponding rails can be done in a short time. The long, comparatively bending and torsionally rigid profile rails also have the advantage that they provide a stable structure for the arrangement of a roof covering and at the same time are connected in a simple manner with the roof substructure.

The above-mentioned advantages of the building roof according to the invention also apply to the Dämmschichtaufbau invention, as well as on the Mineralfaserdämmstoffelement invention to.

Further Features and advantages of the invention will become apparent from the following Description of the associated Drawing, in the preferred embodiments of the invention are shown. In the drawing show:

1 a section of a building roof in perspective view;

2 a section of a Mineralfaserdämmstoffelementes for the building roof according to 1 in a side view and

3 a second embodiment of a Mineralfaserdämmstoffelementes for the building roof according to 1 in a side view.

In 1 is a section of a building roof 1 shown in perspective view, the building roof 1 is designed as a flat roof. The building roof 1 consists of a roof substructure 2 and a thermal barrier coating disposed thereon 3 from a resistant mineral fiber insulating element 4 and a seal 5 , The roof substructure 2 consists of trapezoidal sheets 6 , each with several upper straps 7 and lower straps 8th having. The upper girths 7 and lower straps 8th are arranged alternately.

On the upper girths 7 lies below the mineral fiber insulating element 4 the seal 5 on, which consists of a tear-resistant film. The seal 5 is with the upper straps 7 of the trapezoidal sheet 6 glued and above the lower chords 8th curious; excited.

The mineral fiber insulating element 4 consists of a meandering deposited mineral fiber web, the several parallel webs 9 has, in which the mineral fibers 15 substantially perpendicular to large surfaces 10 . 16 of Mineralfaserdämmstoffelementes 4 are aligned. Two adjacent bridges each 9 are over a deflection area 11 connected with each other. In this diversion area 11 show the mineral fibers 15 a course oblique to parallel to the large surfaces 10 . 16 on.

The mineral fiber insulating element 4 is so on the trapezoidal sheet 6 arranged that the longitudinal axes of the webs 9 perpendicular to the longitudinal axes of the upper straps 7 or lower chords 8th are aligned.

In addition, the building roof 1 several profile rails 12 on, of which in 1 only one is shown. The profile rail 12 is U-shaped in cross-section and has a web 13 from which are two perpendicular to the jetty 13 in the same direction extending leg 14 extend. The thigh 14 are in the big surface 10 of the mineral fiber insulating element 4 pressed in, with the rail 12 with its longitudinal axis parallel to the longitudinal axes of the webs 9 of the mineral fiber insulating element 4 is aligned.

2 shows a first embodiment of the Mineralfaserdämmstoffelements 4 in a side view. In the area of the big surface 10 indicates the mineral fiber insulating element 4 erected mineral fibers 15 on. One of the big surface 10 arranged opposite and parallel to the large surface 10 running large surface 16 has areas in contrast 17 on, in which oblique to the large surface 16 and / or parallel to the large surface 16 running mineral fibers 15 cutting or grinding are removed, so that in these areas the mineral fibers 15 essentially perpendicular to the large surface 16 are aligned.

The big surface 16 is with a lamination 18 Partially covered, with the lamination 18 consists of individual strips not shown, with their longitudinal axis at right angles to the longitudinal axis of the webs 9 running on the surface 16 are glued and thus the cohesion of the webs 9 in the area of the large surface 16 support.

The lamination 18 is tensile trained and with the Mineralfaserdämmstoffelement 4 glued over a polyurethane adhesive. In the lamination 18 a bitumen layer is a mesh fabric 19 made of fiberglass inserted as a reinforcement.

3 shows a second embodiment of a Mineralfaserdämmstoffelementes 4 in side view, in deviation from the embodiment according to 2 in the area of the large surface 10 the majority of the oblique or parallel to the large surface 10 running mineral fibers 15 grinding or cutting is removed.

Furthermore, the mineral fiber insulating element has 4 according to the embodiment according to 3 in the area of the large surface 16 instead of lamination 18 in 2 an impregnation 20 from one between the mineral fibers 15 introduced mass 21 on that the big surface 16 solidified and compacted. The crowd 21 consists of a fiber-reinforced bitumen plastic mass, being in the mass 21 contained fibers are formed as mineral fibers. The crowd 21 can additionally as a non-illustrated coating on the large surface 16 be arranged.

The in the 2 and 3 shown Mineralfaserdämmstoffelemente 4 Beyond the in 1 shown rails 12 with the roof substructure 2 connected. This can be achieved by the design of Mineralfaserdämmstoffelemente 4 long profile rails 12 be used with U-shaped or Z-shaped or L-shaped cross-section. The introduction of long profile rails 12 has the advantage that this introduction is possible in a short time and that the production of such rails 12 is cheap with great length. These rails 12 are relatively stiff and form a stable support construction for a in 1 not shown roofing, which may for example consist of profiled sheets.

Deviating from the long profile rails 12 Of course, shorter rails can be used 12 be used. The short profile rails 12 have the advantage that they can be arranged more flexibly. For this purpose it is with long profile rails 12 necessary to tailor these.

The penetration resistance of the profiled rails described above 12 Can be reduced if the rails 12 in the area of the free ends of the legs 14 are formed with not shown teeth or teeth. In addition, the free ends of the legs 14 be sharpened cut so that the penetration into the Mineralfaserdämmstoffelemente 4 is also easily possible if the Mineralfaserdämmstoffelemente 4 have a higher bulk density, for example, more than 90 kg / m ³ .

The building roof described above 1 is due to the design of Mineralfaserdämmstoffelements 4 and by the arrangement of the mineral fiber insulating element 4 in conjunction with a tearproof seal 5 relative to the trapezoidal sheets 6 the roof substructure 2 sufficiently pressure-resistant to carry out the transport of insulation materials with tire trucks. The accessibility and trafficability of the building roof 1 is particularly due to the design of Mineralfaserdämmstoffelemente 4 with the special fiber flow in combination with the seal 5 and the orientation of Mineralfaserdämmstoffelemente 4 to the trapezoidal sheets 6 achieved. Be the Mineralfaserdämmstoffelemente 4 with their webs 9 formed in sufficient material thickness and / or high density, so the seal 5 differing from the above statements also consist of thin polyethylene films to form an airtightness layer. This also applies if the roof covering consists of profiled sheet metal shells and the connection of the roof covering with the roof substructure 2 over long flocks, which act pressure-balancing. This in 1 Not shown crowds are usually on the rails 12 attached. For this example, screws are used, which in the 1 are not shown in detail and the rail 12 with the trapezoidal sheets 6 combines. Of course, this takes place a thermo-technical decoupling of the crowds not shown from the rails 12 through one between the coulters and the rail 12 arranged insulating element, such as a plastic plate to avoid thermal bridging.

Claims (48)

Building roof, preferably in flat or flachgeneigter configuration, consisting of a roof substructure, in particular profiled sheets, and a heat insulating layer thereon of at least one resistant Mineralfaserdämmstoffelement and at least one device for fixing the Mineralfaserdämmstoffelementes on the roof substructure, wherein the Mineralfaserdämmstoffelement two substantially parallel and in the Having spaced apart large surfaces, characterized in that the Mineralfaserdämmstoffelement ( 4 ) consists of a meandering mineral fiber web, the several parallel webs ( 9 ), wherein the webs ( 9 ) and their mineral fibers ( 15 ) substantially perpendicular to the large surfaces ( 10 . 16 ) and that at least in the area of a large surface ( 10 . 16 ) adjacent webs ( 9 ) over deflection areas ( 11 ) are interconnected. Building roof according to claim 1, characterized in that the roof substructure ( 2 ) made of trapezoidal sheets ( 6 ) with parallel upper straps ( 7 ) and lower straps ( 8th ) and that the mineral fiber insulating element ( 4 ) on at least two adjacent and spaced-apart upper girths ( 7 ) rests. Building roof according to claim 2, characterized in that the Mineralfaserdämmstoffele ment ( 4 ) with the longitudinal axes of the webs ( 9 ) transverse to the longitudinal axes of the upper straps ( 7 ) and the lower chords ( 8th ) on the roof substructure ( 2 ) is arranged. Building roof according to claim 1, characterized in that between the roof substructure ( 2 ) and the mineral fiber insulating element ( 4 ) a seal ( 5 ), in particular an airtightness layer is arranged. Building roof according to claim 4, characterized in that the seal ( 5 ) consists of a tear-resistant film, for example an elastomer-metal composite film, an elastomer-bitumen-metal composite film, a bituminous sheet with metal inserts or a metal foil. Building roof according to claim 4, characterized in that the seal ( 5 ) on the roof substructure ( 2 ) designed load-bearing sheets. Building roof according to claims 3 and 4, characterized in that the sealing ( 5 ) consists of a polyethylene film. Building roof according to claim 4, characterized in that the seal ( 5 ) with the roof substructure ( 2 ) and / or the mineral fiber insulating element ( 4 ), in particular glued. Building roof according to claim 1, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing away from large surface ( 10 ) mineral fibers ( 15 ) having. Building roof according to claim 1, characterized in that in the deflection areas ( 11 ) between adjacent bridges ( 9 ) parallel and / or obliquely to the large surfaces ( 10 . 16 ) mineral fibers ( 15 ) are removed. Building roof according to claim 1, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing large surface ( 16 ) a lamination ( 18 ) having. Building roof according to claim 11, characterized in that the lamination ( 18 ) over the entire surface on the large surface ( 16 ) is arranged. Building roof according to claim 11, characterized in that the lamination ( 18 ) is partially formed, in particular strip-shaped and in particular transversely to the longitudinal axis of the webs ( 9 ) running on the large surface ( 16 ) is arranged. Building roof according to claim 11, characterized in that the lamination ( 18 ) tensile strength is formed. Building roof according to claim 11, characterized in that the lamination ( 18 ) with the mineral fiber insulating element ( 4 ) is glued, wherein between the lining ( 18 ) and the mineral fiber insulating element ( 4 ) is arranged in particular a layer of a polyurethane adhesive. Building roof according to claim 11, characterized in that the lamination ( 18 ) is formed as a bitumen layer, which is preferably reinforced with a mesh fabric of, for example, glass fibers, plastic fibers and / or metal fibers. Building roof according to claim 1, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing large surface ( 16 ) one between the mineral fibers ( 15 ) impregnation ( 20 ) and / or one on the mineral fibers ( 15 ) applied coating from a region below the large surface ( 16 ) solidifying and / or compacting mass ( 21 ) having. Building roof according to claim 17, characterized in that the mass ( 21 ) consists of a hot bitumen, a bitumen emulsion, a fiber-reinforced bitumen plastic material and / or a plastic-coated tile adhesive and preferably comprises a reinforcement of fibers, in particular mineral fibers, plastic fibers and / or metal fibers. Building roof according to claim 1, characterized in that the device for fixing the Mineralfaserdämmstoffelementes ( 4 ) on the roof substructure ( 2 ) at least one rail ( 12 ) and the profile rail ( 12 ) with the roof substructure ( 2 ) has connecting screws. Building roof according to claim 19, characterized in that the profile rail ( 12 ) is U-shaped or L-shaped in cross-section and with at least one leg ( 14 ) into the large surface ( 10 ) of the mineral fiber insulating element ( 4 ) is pressed. Dämmschichtaufbau for a particular flat or flat inclined building roof consisting of a roof substructure, in particular profiled sheets, and at least one device for fixing at least one resistant Mineralfaserdämmstoffelementes on the roof substructure, wherein the mineral fiber element two in the having substantially parallel and spaced large surfaces, characterized in that the mineral fiber insulating element ( 4 ) consists of a meandering mineral fiber web, the several parallel webs ( 9 ), wherein the webs ( 9 ) and their mineral fibers ( 15 ) substantially perpendicular to the large surfaces ( 10 . 16 ) and that at least in the area of a large surface ( 10 . 16 ) adjacent webs ( 9 ) over deflection areas ( 11 ) are interconnected. Insulating layer structure according to claim 21, characterized in that between the roof substructure ( 2 ) and the mineral fiber insulating element ( 4 ) a seal ( 5 ), in particular an airtightness layer is arranged. Insulating layer construction according to claim 24, characterized in that the seal ( 5 ) consists of a tear-resistant film, for example an elastomer-metal composite film, an elastomer-bitumen-metal composite film, a bituminous sheet with metal inserts or a metal foil. Insulating layer construction according to claim 24, characterized in that the seal ( 5 ) on the roof substructure ( 2 ) designed load-bearing sheets. Insulating layer construction according to claims 23 and 24, characterized in that the seal ( 5 ) consists of a polyethylene film. Insulating layer construction according to claim 24, characterized in that the seal ( 5 ) with the roof substructure ( 2 ) and / or the mineral fiber insulating element ( 4 ), in particular glued. Insulating layer construction according to claim 21, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing away from large surface ( 10 ) mineral fibers ( 15 ) having. Insulating layer structure according to claim 21, characterized in that in the deflection areas ( 11 ) between adjacent bridges ( 9 ) parallel and / or obliquely to the large surfaces ( 10 . 16 ) mineral fibers ( 15 ) are removed. Insulating layer construction according to claim 21, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing large surface ( 16 ) a lamination ( 18 ) having. Insulating layer construction according to claim 31, characterized in that the lamination ( 18 ) over the entire surface on the large surface ( 16 ) is arranged. Insulating layer construction according to claim 31, characterized in that the lamination ( 18 ) is partially formed, in particular strip-shaped and in particular transversely to the longitudinal axis of the webs ( 9 ) running on the large surface ( 16 ) is arranged. Insulating layer construction according to claim 31, characterized in that the lamination ( 18 ) tensile strength is formed. Insulating layer construction according to claim 31, characterized in that the lamination ( 18 ) with the mineral fiber insulating element ( 4 ) is glued, wherein between the lining ( 18 ) and the mineral fiber insulating element ( 4 ) is arranged in particular a layer of a polyurethane adhesive. Insulating layer construction according to claim 31, characterized in that the lamination ( 18 ) is formed as a bitumen layer, which is preferably reinforced with a mesh fabric of, for example, glass fibers, plastic fibers and / or metal fibers. Insulating layer construction according to claim 21, characterized in that the mineral fiber insulating element ( 4 ) in the area of its roof substructure ( 2 ) facing large surface ( 16 ) one between the mineral fibers ( 15 ) impregnation ( 20 ) and / or one on the mineral fibers ( 15 ) applied coating from a region below the large surface ( 16 ) solidifying and / or compacting mass ( 21 ) having. Insulating layer construction according to claim 37, characterized in that the mass ( 21 ) consists of a hot bitumen, a bitumen emulsion, a fiber-reinforced bitumen plastic material and / or a plastic-coated tile adhesive and preferably comprises a reinforcement of fibers, in particular mineral fibers, plastic fibers and / or metal fibers. Mineralfaserdämmstoffelement for flat or flat inclined roofs of a meandering formed mineral fiber web, the several parallel webs ( 9 ), wherein the webs ( 9 ) and their mineral fibers ( 15 ) substantially perpendicular to the large surfaces ( 10 . 16 ) and that at least in the area of a large surface ( 10 . 16 ) adjacent webs ( 9 ) over deflection areas ( 11 ), characterized in that Area of a large surface ( 10 ) mineral fibers ( 15 ) are arranged. Mineralfaserdämmstoffelement according to claim 37, characterized in that a large surface ( 10 ) with a seal ( 5 ), in particular an airtightness layer connected, preferably glued. Mineralfaserdämmstoffelement according to claim 38, characterized in that the seal ( 5 ) consists of a tear-resistant film, for example an elastomer-metal composite film, an elastomer-bitumen-metal composite film, a bituminous sheet with metal inserts or a metal foil. 40, Mineralfaserdämmstoffelement according to claim 38, characterized in that the seal ( 5 ) consists of a polyethylene film. Mineralfaserdämmstoffelement according to claim 37, characterized in that in the deflection areas ( 11 ) between adjacent bridges ( 9 ) parallel and / or obliquely to the large surfaces ( 10 . 16 ) mineral fibers ( 15 ) are removed. Mineralfaserdämmstoffelement according to claim 37, characterized in that on a large surface ( 16 ) a lamination ( 18 ) is arranged. Mineralfaserdämmstoffelement according to claim 42, characterized in that the lamination ( 18 ) over the entire surface on the large surface ( 16 ) is arranged. Mineralfaserdämmstoffelement according to claim 42, characterized in that the lamination ( 18 ) is partially formed, in particular strip-shaped and in particular transversely to the longitudinal axis of the webs ( 9 ) running on the large surface ( 16 ) is arranged. Mineralfaserdämmstoffelement according to claim 42, characterized in that the lamination ( 18 ) tensile strength is formed. Mineralfaserdämmstoffelement according to claim 42, characterized in that the lamination ( 18 ) with the large surface ( 16 ) is glued, where at between the lamination ( 18 ) and the large surface ( 16 ) is arranged in particular a layer of a polyurethane adhesive. Mineralfaserdämmstoffelement according to claim 42, characterized in that the lamination ( 18 ) is formed as a bitumen layer, which is preferably reinforced with a mesh fabric of, for example, glass fibers, plastic fibers and / or metal fibers. Mineralfaserdämmstoffelement according to claim 37, characterized in that a large surface ( 16 ) one between the mineral fibers ( 15 ) impregnation ( 20 ) and / or one on the mineral fibers ( 15 ) applied coating from a region below the large surface ( 16 ) solidifying and / or compacting mass ( 21 ) having. Mineralfaserdämmstoffelement according to claim 48, characterized in that the mass ( 21 ) consists of a hot bitumen, a bitumen emulsion, a fiber-reinforced bitumen plastic material and / or a plastic-coated tile adhesive and preferably comprises a reinforcement of fibers, in particular mineral fibers, plastic fibers and / or metal fibers.