EP1530663A1 - Hidden fastening insulating panel for building roofs and roof thereby obtained - Google Patents

Hidden fastening insulating panel for building roofs and roof thereby obtained

Info

Publication number
EP1530663A1
EP1530663A1 EP02741167A EP02741167A EP1530663A1 EP 1530663 A1 EP1530663 A1 EP 1530663A1 EP 02741167 A EP02741167 A EP 02741167A EP 02741167 A EP02741167 A EP 02741167A EP 1530663 A1 EP1530663 A1 EP 1530663A1
Authority
EP
European Patent Office
Prior art keywords
panel
roof
panels
panel according
bottom face
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.)
Withdrawn
Application number
EP02741167A
Other languages
German (de)
French (fr)
Inventor
Maurizio Morandi
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.)
Metecno SpA
Original Assignee
Metecno SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metecno SpA filed Critical Metecno SpA
Publication of EP1530663A1 publication Critical patent/EP1530663A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/365—Connecting; Fastening by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
    • E04D3/352—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material at least one insulating layer being located between non-insulating layers, e.g. double skin slabs or sheets

Definitions

  • the invention relates to insulating panels of the type commonly used for the construction of roofs of civil, industrial or other kinds of buildings.
  • these panels have a composite structure, also called “sandwich” structure, wherein at least one insulating layer is arranged between two faces, one of which is at sight when the panel is in the installed position on a building, while the other remains on the inner side of the roof.
  • the insulating material is generally foamed polyurethane or similar (but it might also be rock wool or other insulating substance) , while the external faces in most cases are steel sheets (coated, galvanized or treated in some other way) , copper or aluminium sheets and the like.
  • the latter are profiled so that the sheet intended to form the face at sight of the roof, has a desired external appearance while the inner sheet, usually thinner, serves as a base resting on the understructure of the roof .
  • the face at sight may be shaped with a profile which is undulated, corrugated or reproduces the components (for example the bent tiles) of a roof, while the inner face is mainly flat and reinforced by light ribbing.
  • Fixing of these panels is currently carried out, using special self-threading or self-boring screws, which penetrate from above and pass through the whole thickness of the panels ' until they engage in the underlying beams of the structure supporting the roof; examples of insulating panels which are fixed using this system can be seen in European patent application No. 967,343 and in international patent application No. WO 96/35028. Fixing performed in this way has essentially two drawbacks .
  • the first one is that the screw hole forms a point where water, dust, mould, etc. may infiltrate, since the screw is applied into the panel from above, namely on its side which is exposed to atmospheric agents.
  • the second drawback is that the heads of the screws are visible from the outside when laying of the roof has been completed; this situation may in certain cases be unacceptable from an aesthetic point of view, for example in the case of panels which reproduce the appearance of the bent tiles of roofs.
  • sealing washers or caps for the screws or to arrange them in joining zones of the panels, ensuring that they are “hidden” by mating edges of the panels which for this reason are suitably configured.
  • the first solution does not solve the aesthetic problem associated with the visibility of the screws, while the second solution is applicable only along the joining edges of the panels so that if the latter have to be fixed also in intermediate points, screws must again be applied thereby resulting in the same problems before.
  • the present invention aims to remedy this state of the art, namely it has the object of providing a panel for roofs of buildings and structures in general, having structural and functional features as to allow installation thereof without the drawbacks mentioned above .
  • - Fig. 1 shows a perspective view of a panel according to the invention
  • - Fig. 2 shows a cross-sectional view of a detail of the fixing system for the panel of Fig. 1;
  • Fig. 3 is an enlarged view of a detail of Fig. 2;
  • FIG. 4 and 5 show a cross-section, similar to that of Fig. 2, of respective constructional variants of the panel according to the invention.
  • a panel denoted in its entirety by 1 comprising an external or upper face 2 formed by a profiled and pressed metal sheet having a surface finish reproducing the appearance of the bent tiles on a roof .
  • This metal sheet may be made of copper, steel or other metal, likewise the opposed sheet which forms the inner or bottom face 3 of the panel, whose thickness is less than that of the first face; the bottom face 3 is essentially flat even though reinforced by a series of micro-ribs 4 with a flat profile.
  • An insulating layer 5 formed by expanded polyurethane is present between the faces 2 and 3 of the panel; the edges of said layer and of the top and bottom faces are configured so as to allow longitudinal connection of the panels for fixing thereof, as will be explained below.
  • Figures 2 and 3 show the joined edges of two panels 1 and 1' which are fixed to a beam 7 of the roof understructure by means of screws 8, 8'; the panels 1, 1 ' are identical and therefore the components of the second panel will have the same numbering as those of the first one, with the addition of a prime.
  • the screws 8 , 8 ' are of the type commonly used for these applications (i.e. self-threading or self- boring) , but have a smaller length than the known type since they do not have to pass through the thickness of the panels as occurs in the prior art; moreover, if they are of the self-boring type, they do not require preliminary boring of the panels or the beams because with the thicknesses which are usually employed, they are able to penetrate them.
  • the bottom face 3 of the panel has a projecting longitudinal edge 9 obtained by folding the sheet metal from which it is made, while the other edge of this face terminates in one of the ribs 4; in this way the projecting edge 9 of one panel may be inserted underneath the rib of an adjacent panel, for installation thereof.
  • the panels are provided internally with reinforcing elements 10; in the example shown in Figs. 2 and 3, these elements are formed by metal strips with a thickness not less than that of the pressed sheet which forms the upper face 2 of the panel .
  • the elements 10 are positioned on the ribbing 4 along the edge of the panels and are engaged by fixing screws 8; in this way the latter penetrate into an underlayer of suitable thickness providing the connection between the panels and the beam 7.
  • the reinforcing elements 10 which obviously can also be arranged in other zones of the panel and not only along the longitudinal edges thereof, may be metal sections like those shown in Figures 4 and 5, where for the sake of simplicity the same numbering of the previous example has been retained.
  • These sections have a flat portion so that they can be applied on the ribs 4 of the bottom face 3 of the panel, inside which the screws 8 engage; compared to reinforcing elements formed by simple strips, the sections have the advantage of ensuring a better grip within the foam.
  • the reinforcing elements are kept in position only by the pressure exerted on them by the expanded polyurethane .
  • the present invention has the advantage that it may be easily applied to pre-existing panels, so that from the manufacturing point of view it is not necessary to make any modification to moulds, rolls and other apparatus, it being only necessary to provide means for mounting the metal sections or strips 10.
  • This mounting operation may moreover be performed both manually or in an automated manner, before casting the polyurethane ; it should nevertheless be pointed out that the invention can be used advantageously also with panels wherein the insulating layer is formed by rock wool or glass.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

The invention relates to a sandwich panel for roofs of building in general, wherein the outer face (2) is profiled with deep ribs or according to the aspect of roof tiles. For fixing the panel to the roof understructure, inside thereof reinforcing elements are provided which can be engaged by screws; this allow to secure the panels from below rather than from above, thereby keeping their bottom face (3) unchanged and thin.

Description

Hidden fastening insulating panel for building roofs and roof thereby obtained
The invention relates to insulating panels of the type commonly used for the construction of roofs of civil, industrial or other kinds of buildings.
As is known these panels have a composite structure, also called "sandwich" structure, wherein at least one insulating layer is arranged between two faces, one of which is at sight when the panel is in the installed position on a building, while the other remains on the inner side of the roof.
The insulating material is generally foamed polyurethane or similar (but it might also be rock wool or other insulating substance) , while the external faces in most cases are steel sheets (coated, galvanized or treated in some other way) , copper or aluminium sheets and the like.
The latter are profiled so that the sheet intended to form the face at sight of the roof, has a desired external appearance while the inner sheet, usually thinner, serves as a base resting on the understructure of the roof .
For this purpose, the face at sight may be shaped with a profile which is undulated, corrugated or reproduces the components (for example the bent tiles) of a roof, while the inner face is mainly flat and reinforced by light ribbing.
Fixing of these panels is currently carried out, using special self-threading or self-boring screws, which penetrate from above and pass through the whole thickness of the panels ' until they engage in the underlying beams of the structure supporting the roof; examples of insulating panels which are fixed using this system can be seen in European patent application No. 967,343 and in international patent application No. WO 96/35028. Fixing performed in this way has essentially two drawbacks .
The first one is that the screw hole forms a point where water, dust, mould, etc. may infiltrate, since the screw is applied into the panel from above, namely on its side which is exposed to atmospheric agents.
The second drawback is that the heads of the screws are visible from the outside when laying of the roof has been completed; this situation may in certain cases be unacceptable from an aesthetic point of view, for example in the case of panels which reproduce the appearance of the bent tiles of roofs.
In order to overcome these drawbacks it is known to use sealing washers or caps for the screws or to arrange them in joining zones of the panels, ensuring that they are "hidden" by mating edges of the panels which for this reason are suitably configured.
It is obvious that the first solution does not solve the aesthetic problem associated with the visibility of the screws, while the second solution is applicable only along the joining edges of the panels so that if the latter have to be fixed also in intermediate points, screws must again be applied thereby resulting in the same problems before.
The present invention aims to remedy this state of the art, namely it has the object of providing a panel for roofs of buildings and structures in general, having structural and functional features as to allow installation thereof without the drawbacks mentioned above .
This object is achieved by a panel whose features are stated in the claims accompanying the present description, which will emerge fully from the non- limiting example provided hereinbelow and illustrated in the accompanying drawings wherein:
- Fig. 1 shows a perspective view of a panel according to the invention; - Fig. 2 shows a cross-sectional view of a detail of the fixing system for the panel of Fig. 1;
- Fig. 3 is an enlarged view of a detail of Fig. 2;
- Figs. 4 and 5 show a cross-section, similar to that of Fig. 2, of respective constructional variants of the panel according to the invention.
With reference to the first of these figures, therein a panel denoted in its entirety by 1, is shown, comprising an external or upper face 2 formed by a profiled and pressed metal sheet having a surface finish reproducing the appearance of the bent tiles on a roof .
This metal sheet may be made of copper, steel or other metal, likewise the opposed sheet which forms the inner or bottom face 3 of the panel, whose thickness is less than that of the first face; the bottom face 3 is essentially flat even though reinforced by a series of micro-ribs 4 with a flat profile.
An insulating layer 5 formed by expanded polyurethane is present between the faces 2 and 3 of the panel; the edges of said layer and of the top and bottom faces are configured so as to allow longitudinal connection of the panels for fixing thereof, as will be explained below.
Figures 2 and 3 show the joined edges of two panels 1 and 1' which are fixed to a beam 7 of the roof understructure by means of screws 8, 8'; the panels 1, 1 ' are identical and therefore the components of the second panel will have the same numbering as those of the first one, with the addition of a prime.
The screws 8 , 8 ' are of the type commonly used for these applications (i.e. self-threading or self- boring) , but have a smaller length than the known type since they do not have to pass through the thickness of the panels as occurs in the prior art; moreover, if they are of the self-boring type, they do not require preliminary boring of the panels or the beams because with the thicknesses which are usually employed, they are able to penetrate them.
The bottom face 3 of the panel has a projecting longitudinal edge 9 obtained by folding the sheet metal from which it is made, while the other edge of this face terminates in one of the ribs 4; in this way the projecting edge 9 of one panel may be inserted underneath the rib of an adjacent panel, for installation thereof. Similarly, in the roof the insulating panels 5 and
5' of two adjacent panels abut with each other longitudinally, while the end edge of the upper face 2 of a panel is superimposed on the face 2 ' of the adj acent panel . For their fixing to the beam 7, the panels are provided internally with reinforcing elements 10; in the example shown in Figs. 2 and 3, these elements are formed by metal strips with a thickness not less than that of the pressed sheet which forms the upper face 2 of the panel .
The elements 10 are positioned on the ribbing 4 along the edge of the panels and are engaged by fixing screws 8; in this way the latter penetrate into an underlayer of suitable thickness providing the connection between the panels and the beam 7.
Indeed the inner face 3 of the panels is too thin for having a suitable strength to stand the action of the screws .
The reinforcing elements 10, which obviously can also be arranged in other zones of the panel and not only along the longitudinal edges thereof, may be metal sections like those shown in Figures 4 and 5, where for the sake of simplicity the same numbering of the previous example has been retained.
These sections have a flat portion so that they can be applied on the ribs 4 of the bottom face 3 of the panel, inside which the screws 8 engage; compared to reinforcing elements formed by simple strips, the sections have the advantage of ensuring a better grip within the foam.
In this connection it is necessary to point out that in accordance with a preferred embodiment of the invention, the reinforcing elements are kept in position only by the pressure exerted on them by the expanded polyurethane .
However there would be no bar to prevent fixing the elements, be they in the form of strips or profiled sections, using an adhesive or by means of (spot or continuous) welding. From what has been explained hitherto it is possible to understand how the panel 1 considered in the foregoing achieves the object put forward initially for the invention. Indeed, since the panel is fixed using screws applied from below which do not pass beyond the insulating layer 5, outside of the panel there are no holes which can give rise to infiltrations, as occurs in the prior art; as a logical consequence thereof, it is also obvious that the panel 2 does not have an unaesthetic appearance due to the visible nature of the screws on its outer face.
It is also important to point out that in the case of panels where the external metal sheet has transverse impressions (such as for example that which reproduces the profile of bent tiles shown in Fig. 1) , there is a further advantage with respect to the prior art : the possibility of positioning the screws in the longitudinal direction of the panel, independently of the position of the transverse impression on the external metal sheet and hence with an interaxial space between the support points which is free.
These important results are obtained without having to modify the original structure of the panel since it is sufficient to provide for its manufacturing, the metal profiled sections or strips 10 as additional components.
In other words the present invention has the advantage that it may be easily applied to pre-existing panels, so that from the manufacturing point of view it is not necessary to make any modification to moulds, rolls and other apparatus, it being only necessary to provide means for mounting the metal sections or strips 10.
This mounting operation may moreover be performed both manually or in an automated manner, before casting the polyurethane ; it should nevertheless be pointed out that the invention can be used advantageously also with panels wherein the insulating layer is formed by rock wool or glass.
These and other equivalent variants fall within the scope of the following claims.

Claims

1. Panel for roofs of buildings, comprising: an upper face (2) to be arranged on the outside of the roof, a bottom face (3) to be arranged on the inside, an insulating layer (5) between faces, characterized in that it comprises in its interior at least one reinforcing element (10) having a flat portion applied onto the bottom face of the panel .
2. Panel according to Claim 1, wherein said at least one reinforcing element (10) is substantially a semi-rigid strip.
3. Panel according to Claim 1, wherein said at least one reinforcing element (10) is a section.
4. Panel according to Claim 2 or 3, wherein said strip and section (10) are made of metal.
5. Panel according to any one of Claims 1 to 4 , wherein both faces (2, 3) of the panel are made of sheet metal and the upper face (2) has a thickness greater than that of the bottom face (3) .
6. Panel according to Claim 5, wherein the bottom face (3) has flat ribbing (4) onto which the flat portion of said at least one reinforcing element is applied.
7. Panel according to Claim 6 , wherein the outer face (2) is configured so as to reproduce the bent tiles aspect of a roof.
8. Panel according to any one of the preceding claims, wherein the insulating layer (5) is formed using expanded polymer material or rock wool .
9. Roof of building, characterized in that it comprises a plurality of panels (1) in accordance with any of Claims 1 to 8 , which are fixed to the beams (7) of the roof understructure by means of screws (8) passing through the bottom face (3) of the panels and into the reinforcing elements (10) present therein.
EP02741167A 2002-05-31 2002-05-31 Hidden fastening insulating panel for building roofs and roof thereby obtained Withdrawn EP1530663A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2002/000350 WO2003102323A1 (en) 2002-05-31 2002-05-31 Hidden fastening insulating panel for building roofs and roof thereby obtained

Publications (1)

Publication Number Publication Date
EP1530663A1 true EP1530663A1 (en) 2005-05-18

Family

ID=29596814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02741167A Withdrawn EP1530663A1 (en) 2002-05-31 2002-05-31 Hidden fastening insulating panel for building roofs and roof thereby obtained

Country Status (3)

Country Link
EP (1) EP1530663A1 (en)
AU (1) AU2002314529A1 (en)
WO (1) WO2003102323A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909697B1 (en) * 2006-12-07 2011-11-11 Panneaux Sandwich Isosta METHOD FOR MANUFACTURING A DECORATION PANEL FOR A ROOF OR A FACADE
CN106193468A (en) * 2016-09-13 2016-12-07 朱波 Spliced thermal-insulating waterproof shoe plate, spliced thermal-insulating waterproof shoe plate combinative structure and construction method thereof
CN106401078A (en) * 2016-09-13 2017-02-15 朱波 Thermal-insulation and water-proof tile slab, thermal-insulation and water-proof tile slab composite structure and construction method of thermal-insulation and water-proof tile slab composite structure
IT201700007952A1 (en) * 2017-01-25 2018-07-25 Rexpol Srl COVERED ELEMENT IN A SHAPED SHEET WITH SOUND-INSULATING, FIRE-RESISTANT MATERIAL

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214949B (en) * 1988-01-30 1991-11-13 Ecometal Ltd Building panels
US5509242A (en) * 1994-04-04 1996-04-23 American International Homes Limited Structural insulated building panel system
GB2293183A (en) * 1994-09-13 1996-03-20 Panelspan Ltd Roof/Wall panel
US5664386A (en) * 1994-11-02 1997-09-09 Palmersten; Michael J. Point-to-point interlocking panels
WO1996041925A1 (en) * 1995-06-09 1996-12-27 E.P.S. Australia Pty. Ltd. Building system and components thereof
US6085485A (en) * 1997-12-11 2000-07-11 Murdock; Douglas G. Load bearing pre-fabricated building construction panel
IT1314275B1 (en) * 1999-12-13 2002-12-06 Flii Re S R L STRUCTURE OF MONOLITHIC PANEL ARCUATO AND THERMALLY EDACUSTICALLY INSULATED, PARTICULARLY SUITABLE FOR COVERING
GB2362660A (en) * 2000-05-22 2001-11-28 Noel Columba Benin Josep Deery Roofing system

Non-Patent Citations (1)

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Title
See references of WO03102323A1 *

Also Published As

Publication number Publication date
AU2002314529A1 (en) 2003-12-19
WO2003102323A1 (en) 2003-12-11

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