EP0279919A1 - Sous-toiture à isolation phonique - Google Patents

Sous-toiture à isolation phonique Download PDF

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Publication number
EP0279919A1
EP0279919A1 EP87117504A EP87117504A EP0279919A1 EP 0279919 A1 EP0279919 A1 EP 0279919A1 EP 87117504 A EP87117504 A EP 87117504A EP 87117504 A EP87117504 A EP 87117504A EP 0279919 A1 EP0279919 A1 EP 0279919A1
Authority
EP
European Patent Office
Prior art keywords
roof
wave
thermal insulation
sub
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87117504A
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German (de)
English (en)
Other versions
EP0279919B1 (fr
Inventor
Manfred Helfrecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT87117504T priority Critical patent/ATE57734T1/de
Publication of EP0279919A1 publication Critical patent/EP0279919A1/fr
Application granted granted Critical
Publication of EP0279919B1 publication Critical patent/EP0279919B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/20—Roofs consisting of self-supporting slabs, e.g. able to be loaded
    • E04B7/22—Roofs consisting of self-supporting slabs, e.g. able to be loaded the slabs having insulating properties, e.g. laminated with layers of insulating material
    • E04B7/225—Roofs consisting of self-supporting slabs, e.g. able to be loaded the slabs having insulating properties, e.g. laminated with layers of insulating material the slabs having non-structural supports for roofing materials

Definitions

  • the invention relates to a sub-roof for roofs covered with roofing tiles according to the preamble of claim 1.
  • a sub-roof is known from a heat-insulating covering, in which approximately the thickness of the roof batten thermal insulation boards are laid in film trays between roof battens.
  • the angled, overlapping edge strips of the film shell have a waffle-like design, on the one hand to prevent the roofing tiles from resting hard on the roof battens and to counteract the risk of breakage in the event of hail and on the other hand to provide ventilation.
  • the insulation panels also provide sound insulation due to the materials used for the insulation panels.
  • the quality of the soundproofing falls far short of expectations and that cracking noises also occur, which are obviously triggered by the thermal movement of the elements of the sub-roof.
  • the areas where the sub-roof rests on the roof battens have proven to be areas that are particularly responsible for sound transmission and in which the cracking noises are triggered. The main sound transmission obviously takes place in these support areas on the roof battens.
  • the invention has for its object to provide a sub-roof of the type mentioned so that the highest possible sound insulation in the overlap area above the roof battens with simultaneous ventilation of the underside support areas of the roofing panels can be reached and crackling noises are suppressed.
  • This wave structure of the covering strips supported on the roof battens or the edge strips of the film shell which cross over the roof battens obviously create sufficiently large cavities which act like cavity resonators and cause a phase rotation for the sound waves, so that by superimposing sound waves of opposite phases, at least partially one Sound cancellation is achieved.
  • the cavities promote the evaporation of moisture that can arise from condensation.
  • the wavelength of the waves assigned to the top sides of the roof batten is greater than the wavelength of the waves assigned to the end faces of the roof batten, cavities of different sizes result which have different effects on the phase rotation and thus have a favorable effect on sound cancellation.
  • the formation of cavities of different sizes is also favored by the fact that in practice the wave crests do not lie evenly in line and that adjacent trough areas are spatially connected to one another, which further favors the creation of resonance cavities of different volumes and also serves to better remove condensate.
  • the wave structure makes the edge strips of the film shell, which is inherently very dimensionally stable, more flexible, which also proves to be advantageous for suppressing the transmission of structure-borne noise.
  • the surface area between the eaves-side edge and the hanging groove for the roof covering panels is also provided with a corrugated structure, the wave crests and valleys running perpendicular to the longitudinal direction of the roof battens.
  • This wave structure mainly serves to suppress cracking noises due to the inevitable movement of heat.
  • the edge between the contact surface for the top edges of the roof covering panels and the hanging groove is designed to be continuous and slightly raised. This design ensures a continuous support of the top edge of the roof covering panels, this edge being sufficiently narrow to compensate for thermal movement between the roof covering panel and the thermal insulation panel in the area of its own elasticity. This has the same effect as the line contact of the wave crests, because due to the small contact surface and the comparatively low contact pressure, no friction inhibition during thermal movement can build up, which is compensated for by sudden movement.
  • wave structures in the form of sinusoidal waves or triangular and / or pulse-shaped waves have hardly any different effects.
  • the wave structure is also possible to design the wave structure as a rectangular wave, in particular in the area of the contact surface of the head-side edges of the roof covering plates between the hanging groove and the eaves-side end edge of the thermal insulation boards.
  • These rectangular waves or pulsed waves if the elevations are narrower than the depressions, provide evenly distributed support strips for the roofing tiles, which ensure that the unsupported areas do not become too large.
  • the interlocking wave structure of the thermal insulation panel and the foil trough is adapted to one another in such a way that different waveforms interlock loosely at the same wavelength.
  • the wave structure has at least a part of wave crests that are narrower than the wave troughs.
  • knobs and webs can also be provided. Incisions in the webs and the wave structure have an advantageous influence on both the resonance behavior and the evaporation of moisture.
  • a horizontal butt joint between two thermal insulation boards 10 is shown in a sectional perspective view above a roof batten 12 arranged on a rafter 11.
  • the eaves-side thermal insulation panel 10 engages over the roof batten 12 with a support strip 14 on the ridge side 12.
  • a cover strip 16 of the ridge-side thermal insulation panel 10 engages over the support strip 14, a step-shaped cutout 17 adjoining the cover strip 16 on the underside of the thermal insulation panel likewise engaging over the roof batten on the ridge side .
  • a hanging groove 20 for roof covering panels is provided on the top side, which is provided with a corrugated structure 21 on its eaves-side wall.
  • This wave structure is triangular in the illustration with wave crests and wave troughs running vertically over the side wall.
  • a contact surface for the top edges of the roofing panels which is also provided with a corrugated structure 22.
  • this corrugated structure is also triangular, but with a longer wavelength than the corrugated structure 21.
  • the individual corrugated lines run from the hanging groove 20 to the edge of the thermal insulation board on the eaves side.
  • a narrow support edge 23 is formed, on which the roof covering plate rests over the entire width at the head end.
  • the edition is essentially to be evaluated as a linear support, which is sufficiently flexible to prevent sudden friction and thus cracking noises when the heat is moved between the two parts.
  • the wave structure 22 can also be designed such that the individual wave trains do not run parallel to one another, but wedge-shaped, in that the wavelength decreases continuously from the hanging groove to the eaves-side edge of the thermal insulation panel. It is provided that the wave trains run obliquely from both sides towards the center of the element.
  • this configuration of the support area for the top edge of the roofing panels also has the effect of ventilation on the underside for the roofing panel
  • the purpose of this configuration is to create cavities in their volume due to the roofing panel resting on the support edge and the wave crests be determined and are open to the eaves-side end of the thermal insulation panel. These cavities have a sound-absorbing and sound-suppressing effect and counteract crackling noises.
  • roof battens 12 are attached to the rafters with relatively large tolerances, horizontal laying joints 25 of different sizes also result when the sub-roof is laid between the individual thermal insulation boards. It has been shown that these laying joints towards the roof battens are disadvantageous for sound insulation, whereby no clear physical explanation can be given for this phenomenon. However, it is assumed that structure-borne noise is transmitted to the roof batten in this area, which justifies the deterioration of the sound insulation compared to the solid element of the thermal insulation panel.
  • the wave trains lie essentially linearly on the roof batten with the wave crest, whereby due to the spatial structure of the roof batten, the cavities formed between the individual wave trains are irregularly connected to one another and this can result in acoustic resonance spaces that have different phase behavior, which obviously results from phase overlap Sound cancellation leads.
  • This provision of the corrugated structure in the support area on the roof batten also has the advantage that the known cracking noises can be avoided during a thermal movement.
  • FIG. 2 An embodiment of the invention is shown in FIG. 2, which differs only in the design of the wave structure and the laying of the thermal insulation boards 10 in film shells 60.
  • the corrugated structure 121 on the eaves-side wall of the hanging groove 20 has a sinusoidal shape and merges into a corrugated structure 122 in the area of the bearing surface for the head-side edge of the roofing plate, which is also sinusoidal.
  • the individual wave trains of this wave structure 122 run transversely to the thermal insulation board, i.e. in the direction of the hook-in groove 10.
  • On the underside of the support strip 14, a sinusoidal wave structure 130 is also formed, which merges into a corresponding sinusoidal wave structure 132 on the underside of the overlap strip 16.
  • the wave structure on the side walls of the cutout receiving the batten 12 is triangular.
  • the film shells 60 are constructed in a conventional manner, but is also in the side walls of the cutout for the roof batten assigned corrugated edges a wave structure that corresponds to the wave structure on the thermal insulation panel. However, as will be described later in FIG. 9, a different waveform can be used.
  • the ridge-side edge strip 61 which extends over the roof batten 12 and the eave-side edge strip 62 of the film shell 60 are also shaped in a wave shape and the shape of the wave structure 130 and 132 on the underside of the thermal insulation boards is adapted in the cutout for the roof batten.
  • the measures described with reference to FIG. 9 can also be used here, which also have an advantageous effect because of the different shrinkage values between the material used for the film tray 60 and the material used for the thermal insulation panel 10.
  • edge strip 261 and 262 on the ridge side and eaves side on the film trough 60 is particularly clearly shown in FIG. 3, which shows an embodiment in which thermal insulation boards 110 are used which only engage between the roof battens and do not cover them.
  • These edge strips 261 and 262 have a sinusoidal wave structure 122, the wave trains running in the longitudinal direction of the roof batten 12.
  • the wave structure 221 on the eaves-side edge of the film shell 60 consists of adjoining half waves, the wave trains running perpendicular to the direction of the roof battens.
  • a step-shaped cutout 220 is made, which receives the lugs of the suspended roof covering panels.
  • the edge strips 261 and 262 lie on the one hand along the upper edge of the wave trains on the roof batten 12 and on the other hand with the wave structure 122 on the underside of the roof covering plate. This creates the desired cavities, which is desirable for sound suppression and ventilation. Also in this embodiment of the Invention can be provided that the corrugated structures of the edge strips 261 and 262 are designed differently, so that, like in the embodiment explained in FIG. 9, they interlock and form additional cavities.
  • FIG. 4 and FIG. 6 show triangular wave structures 22 for the bearing surface of the roof covering panels, whereas FIG. 5 shows a sinusoidal wave structure 122.
  • FIG. 4 and FIG. 6 show triangular wave structures 22 for the bearing surface of the roof covering panels, whereas FIG. 5 shows a sinusoidal wave structure 122.
  • the triangular wave structure merges over the support edge 23 into a wave-shaped structure 121, the wave crests of the wave structure 22 ending approximately in the plane of the surface of the support edge 23, so that the respective one covered by the overlying roof covering plate for the acoustic effect of the effective space after the contact edge is as complete as possible.
  • the sine-like wave structure 122 merges into the sine-like wave structure 121. 4 and 5, the wavelength of the wave structure of the edge strip and the side wall of the hanging groove are shown with the same wavelength, it is expedient, as already mentioned, to provide a different wavelength for the two wave structures.
  • FIG. 7 and 8 show a special configuration of the corrugated structure in the region of the hanging groove and the support surface for the roof covering panels, a rectangular corrugated structure 322 being used.
  • the roof surfaces of the can not be seen
  • the crests of the waves should be slightly spherical in order to reduce the contact area with the roof covering plate.
  • the rectangular wave trains have an increasing amplitude from the eaves-side edge to the hook-in groove 320 of the thermal insulation board 310, which decreases considerably shortly before the hook-in groove 320, so that an edge-like elevation is created which serves as a closure for the wave troughs.
  • the wave crests are continued as a flat elevation around the support edge into the side wall of the hook-in groove 320, as can be seen in FIG. 8.
  • the rectangular wave trains are shown with a constant wavelength, it is also provided to design the wave structure in such a way that it has a wavelength decreasing from the hanging groove 321 to the eaves-side end of the thermal insulation panel.
  • This creates oblique wave trains it being provided that a wave train running perpendicular to the hanging groove runs in the central region of the element and the other wave trains are formed obliquely against this central region from both sides.
  • the wave troughs are open towards the eaves-side end, so that the cavities formed after the roof covering tiles have been placed on them can act like resonance cavities, which offer different phase conditions for the sound waves, particularly in the case of the oblique wave trains, so that sound suppression is possible through phase overlay.
  • the inlet slot on the eaves side of the thermal insulation panel is approximately 1 mm high and, according to the corrugated structure, between 6 and 15 mm wide.
  • the amplitude of the square wave can be of a size of 1 mm in the area of the inlet slot rise to 5 to 8 mm up to the contact edge 323 and then decrease to 1 mm in the area of the contact edge. With this amplitude, the wave train also runs into the suspension groove 320.
  • FIG. 7 also shows the step-shaped cutout 317, in which a roof batten, not shown, engages.
  • a roof batten not shown
  • both the wave structure assigned to the support strip and the wave structure assigned to the side wall of the cutout are designed as a rectangular wave, but the front and rear flanks are not very steep. This results in a trapezoidal course.
  • the thermal insulation board 310 can also be laid in film trays. An embodiment is particularly advantageous, as is described with reference to FIG. 9.
  • Fig. 9 a portion of the side wall of the cutout is provided, in which the roof panel is inserted and which is designated in Fig. 7 with 317.
  • the side wall has a trapezoidal wave structure 318, whereas an impulse-shaped wave structure 319 is assigned to the side wall of the film shell which is assigned to this wall surface, the individual pulses representing sinusoidal increases, the pulse width of which is substantially narrower than half the wavelength of the trapezoidal wave structure 318.
  • the measures of the invention result in a substantially improved sound insulation in the area around the roof batten which is critical for the transmission of sound, and as a side effect better ventilation of the top edges of the roof covering panels and the roof batten is established.
  • FIGS. 10 to 14 show further configurations of the surface between the edge on the eaves side and the hanging groove 20, with not only wave structures 422 according to FIGS. 10 and 13 but also knobs 420 according to FIG. 14 and webs 421 or lattice web 423 according to FIGS. 11 and 12 are shown.
  • the wave structures 422 are provided with incisions 425, which can also be made in the webs and lattice webs, although this is not shown.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Catching Or Destruction (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP87117504A 1987-02-02 1987-11-26 Sous-toiture à isolation phonique Expired - Lifetime EP0279919B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117504T ATE57734T1 (de) 1987-02-02 1987-11-26 Unterdach.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873703013 DE3703013A1 (de) 1987-02-02 1987-02-02 Unterdach mit verbesserter schalldaemmung
DE3703013 1987-02-02

Publications (2)

Publication Number Publication Date
EP0279919A1 true EP0279919A1 (fr) 1988-08-31
EP0279919B1 EP0279919B1 (fr) 1990-10-24

Family

ID=6320032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117504A Expired - Lifetime EP0279919B1 (fr) 1987-02-02 1987-11-26 Sous-toiture à isolation phonique

Country Status (3)

Country Link
EP (1) EP0279919B1 (fr)
AT (1) ATE57734T1 (fr)
DE (2) DE3703013A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2189656A1 (es) * 2001-07-23 2003-07-01 Ind Transformadoras Del Cement Modulo de tejado.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842778A1 (de) * 1978-09-30 1980-04-03 Isopor Kunststoff Gmbh Daemmplatte aus hartschaumkunststoff mit nut und federartig ausgebildeten raendern zur anordnung unterhalb der dacheindeckung
EP0068989A2 (fr) * 1981-06-29 1983-01-05 Bernard Hue Module isolant thermique destiné à être intercalé entre un élément de la toiture d'un bâtiment et sa couverture
DE3232048A1 (de) * 1982-08-28 1984-03-01 Helfrecht, Manfred, 8598 Waldershof Unterdach

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842778A1 (de) * 1978-09-30 1980-04-03 Isopor Kunststoff Gmbh Daemmplatte aus hartschaumkunststoff mit nut und federartig ausgebildeten raendern zur anordnung unterhalb der dacheindeckung
EP0068989A2 (fr) * 1981-06-29 1983-01-05 Bernard Hue Module isolant thermique destiné à être intercalé entre un élément de la toiture d'un bâtiment et sa couverture
DE3232048A1 (de) * 1982-08-28 1984-03-01 Helfrecht, Manfred, 8598 Waldershof Unterdach

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2189656A1 (es) * 2001-07-23 2003-07-01 Ind Transformadoras Del Cement Modulo de tejado.

Also Published As

Publication number Publication date
EP0279919B1 (fr) 1990-10-24
DE3703013C2 (fr) 1991-02-07
ATE57734T1 (de) 1990-11-15
DE3765774D1 (de) 1990-11-29
DE3703013A1 (de) 1988-08-11

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