EP1693527B1

EP1693527B1 - A roofing system and a panel suitable for such a roofing system

Info

Publication number: EP1693527B1
Application number: EP06075339A
Authority: EP
Inventors: Petrus Frederikus Maria Rensen
Original assignee: IsoBouw Systems BV
Current assignee: IsoBouw Systems BV
Priority date: 2005-02-16
Filing date: 2006-02-15
Publication date: 2008-05-14
Anticipated expiration: 2026-02-15
Also published as: DE602006001120D1; EP1693527A1; ATE395476T1; NL1028297C2

Abstract

A roofing system comprises a number of panels linked together, each of which panels is provided with an insulating layer, a protective layer connected to the insulating layer and a first and second end, the first end of one panel being linked to the second end of a next panel. Near the first end a recess is provided between a first part of the protective layer and the insulating layer. Near the second end a second part of the protective layer extends to beyond the insulating layer. When the first and second ends of two panels are linked together, the first part of the protective layer between the second part of the protective layer and the insulating layer lies in the recess.

Description

The invention relates to a roofing system comprising a number of linked panels, each of which is provided with an insulating layer, a protective layer connected to the insulating layer and a first and second end, the first end of one panel being linked to the second end of a next panel, with a recess being provided near the first end, between a first part of the protective layer and the insulating layer, when the panels are not linked, and that a second part of the protective layer near the second end extends to beyond the insulating layer, with, when the first and second ends of two panels are linked together, the first part of the protective layer lying between the second part of the protective layer and the insulating layer in the recess.
The invention also relates to a panel that is suitable for use in such a roofing system.
In such a roofing system known from US-A-5.293.728 the protective layer is a metal layer, with the first part and the second part comprising curved wall parts that can be caused to interlock. Such panels are not suitable for use on sloping roofs in cases in which battens and tile laths are to be installed on the panels, after which roof tiles can be placed on the tile laths. Neither are these panels suitable for so-termed flat roofs in cases in which a bituminous or plastic layer extending across all the panels is applied to the panels.
Manufacturing protective layers with such deformed first and second parts is moreover relatively laborious and relatively expensive.
The invention aims to provide a roofing system that ensures good coverage with an almost flat transition between the panels, and the protective layer having a relatively simple design.
This aim is achieved with the roofing system according to the invention because, before the panels are linked together, the first part, the second part and a third part lying between the first and second parts of the protective layer practically lie in a same flat plane.
Because the first, second and third parts practically lie in a single flat plane, a flat layer or flat plate can simply be used as a protective layer. The first end of the protective layer must be somewhat flexible so that it can be positioned in the recess. The protective layer may a thin layer of chipboard or a coating, for example.
The panels according to the invention are suitable for use in a roofing system for sloping roofs in cases in which the usual battens and tile laths are installed on the panels, after which roof tiles are laid on the tile laths.
The roofing system according to the invention is particularly suitable for a type of roof known as a rafter roof. In such a roof, beams, known as rafters, run in the direction of the roof's slope. The panels are then installed in a horizontal direction extending perpendicularly to the rafters. This makes attaching the panels to the beams simpler and independent of the distance between the rafters.
Because the panels extend horizontally, transitions between the panels also extend horizontally.
Because the protective layers of two successive panels overlap one another near the transition, good coverage is obtained. As indicated above, roof tiles are usually attached to the panels. Nevertheless, water may make its way under the tiles onto the panels, for example during heavy rain. This water will flow downwards over the panels and the transitions between the panels.
Because the protective layers of two successive panels overlap one another near the transition, good coverage is obtained. Because moreover the first part of the protective layer lies in the recess while the second part lies on the first part, no overlapping effect is obtained at the transition, but the transition is almost entirely flat. This makes it relatively easy to install tile laths on the panels.
It is also possible to apply a layer of bitumen to the roofing system instead of tile laths, in which case an almost entirely flat roof will be obtained.
One embodiment of the roofing system according to the invention is characterized in that the first part of the protective layer lies in the recess under spring force.
The spring force will firmly press the first part against the second part, which will further improve the coverage.
Yet another embodiment of the roofing system according to the invention is characterized in that on one side facing away from the protective layer the insulating layer comprises a recessed part near the first end, while the insulating layer is near the second end provided with a projection that fits into the recessed part of the first end.
In this way the insulating layer together with the protective layer provide a firm connection between the two panels, as a result of which a further improvement of the coverage is obtained.
Yet another embodiment of the roofing system according to the invention is characterized in that the projection extends almost as far as the second part of the protective layer.
This makes it relatively easy to stack a number of panels during transport and storage without there being any unprotected, fracture-sensitive projecting parts of the protective layer relative to the insulating layer.
Yet another embodiment of the roofing system according to the invention is characterized in that the panel is on one side of the insulating layer facing away from the protective layer provided with a finishing layer.
In this way the roofing system is almost simultaneously finished by the finishing layer in the space present beneath the roof.
Yet another embodiment of the roofing system according to the invention is characterized in that, in the event of a sloping roof, the second end of a panel lies lower than the first end.
The transitions between the panels will consequently extend almost horizontally, with the second part of one panel's protective layer extending over the first part of a panel lying beneath it, which will guarantee a good discharge of water.
Yet another embodiment of the roofing system according to the invention is characterized in that a third part of the protective layer lying between the first and second parts of the protective layer practically lies in a same plane as the second part of a next panel.
Yet another embodiment of the roofing system according to the invention is characterized in that the protective layer comprises chipboard.
Chipboard is very suitable for the installation of battens on which tile laths and roof tiles can subsequently be installed. Chipboard is moreover suitable for the application of a bituminous or plastic layer to said chipboard. Instead of chipboard, a coating may also be provided as the protective layer.
In this way the roofing system constitutes an almost entirely flat surface.
The invention will be further elucidated with reference to the drawing, in which:

Figure 1 shows a perspective view of a rafter roof with a roofing system according to the invention,
Figure 2 shows a cross-section of a panel according to the invention,
Figure 3 shows a side view of the composition of a roofing system using the panels illustrated in figure 2,
Figure 4 shows a side view of the roofing system composed in figure 3,
Figure 5 shows a side view of another panel according to the invention,
Figure 6 shows a side view of the composition of a roofing system using the panels illustrated in Figure 5,
Figure 7 shows a side view of the roofing system composed in figure 6.

In the figures, corresponding elements in figures 1-4 and figures 5-7 are provided with the same numerals.
Figure 1 shows a perspective view of a roof structure 1 that is supported by two walls 2 and a floor 3 extending between the walls. The roof structure 1 comprises a number of beams 4, known as rafters, extending parallel to one another from a beam 5, attached horizontally to the walls 2, to a ridge 6 of the roof structure 1. On the rafters 4 lie panels 7 that are connected to the rafters 4 with the aid of screws. The panels 7 are elongated and extend horizontally in the longitudinal direction. A transition 8 between two linked panels 7 consequently also extends horizontally.
Figure 2 shows a side view of a panel 7 according to the invention, which panel 7 is provided with an insulating layer 9, a protective layer 10 connected to the insulating layer 9 and a finishing layer 11 connected to the insulating layer 9 on a side facing away from the protective layer 10. Near a first end 12 there is a recess 14 between a first part 13 of the protective layer 10 and the insulating layer 9. Near a second end 15 of the panel 7 a second part 16 of the protective layer 10 extends beyond the insulating layer 9. Between the first part 13 and the second part 16 lies a third layer 17 of the protective layer 10, the first part 13, the second part 16 and the third part 17 lying in a single flat plane.
On a side facing away from the protective layer 10 the insulating layer is near the first end 12 provided with a recessed part 18, while the insulating layer 9 is near the second end 15 provided with a projection 19. The projection 19 corresponds to the recessed part 18 in terms of shape. Near the recessed part 18 the insulating layer 9 is provided with an elongated groove 20 into which a sealing strip can be inserted. The sealing strip preferably extends between two adjoining panels and lies against the finishing layers. The finishing layer 11 extends between the recessed part 18 and the projection 19. The second part 16 extends just as far relative to the insulating layer 9 as the projection 19. Between the second part 16 and the projection 19 is an indentation 21 which in terms of shape corresponds to a part 22 of the insulating layer 9 near the first end 12.
The protective layer 10 and the finishing layer 11 are preferably made of chipboard with a thickness of for example 3 mm that is on a side facing away from the insulating layer 9 for example provided with a plastic film or coating.
Figure 3 shows how a roofing system is composed with the aid of the panels 7. First a panel 7 is near a bottom side of the roof structure 1 attached to the rafters 4 with the aid of for example screws. The first end 12 of the panel 7 in this case lies higher than the second end 15.
Next, a second panel 7' is positioned relative to the already installed panel 7 so that the second end 15 of panel 7' extends parallel to the first end 12 of the already installed panel 7. Panel 7' is brought into a position in which it is somewhat tilted from the rafters 4 and the second part 16 is placed on the first part 13. Next, panel 7' is turned in the direction indicated by arrow P1 and simultaneously pushed towards panel 7. This causes the projection 19 to move into the recessed part 18, and part 22 to move into the indentation 21. The second part 16 presses the first part 13 into the recess 14 and spring force of the first part 13 will push it against the second part 16. The panels 7, 7' will then be in the position illustrated in Figures 4, with the protective layers 10 of the panels 7, 7' constituting an almost entirely flat surface. Tile laths etc. can be easily applied to this flat surface in a known manner. If any water should end up on the protective layer 10, it will flow downwards and will at the transition of the second part 16 to the first part 13 readily flow from the panels 7, 7'.
As clearly visible in Figures 4, the distance over which the second part 16 extends from the insulating layer 9 corresponds to about half of the depth of the recess 14. This ensures that when panel 7' is linked to panel 7, the first part 13 will be pressed into the recess 14 and the second part 16 will not be pressed in a direction facing away from the insulating layer 9.
The finishing layers 11 of the adjacent panels 7, 7' also constitute an almost uninterrupted surface, so that the roofing system is in the space present beneath the roof structure 1 simultaneously almost completely finished.
Figure 5 shows a second embodiment of a panel 27 according to the invention that is provided with an insulating layer 28 and a protective layer 29 connected to the insulating layer. The protective layer 29 is near a first end 30 of the panel 27 provided with a recess 32 lying between a first part 31 of the protective layer 29 and the insulating layer 28. Near a second end 33 a second part 34 of the protective layer 29 extends to beyond the insulating layer 28. The length of the second part 34 is about two thirds of the length of the first part 31.
Between the first part 31 and the second part 34 is a third part 35, which, together with the first part 31 and the second part 34, constitutes a flat surface.
Figure 6 shows the connection of a panel 27' to a panel 27 already installed on a roof structure.
Panel 27 has been installed on a supporting structure of a flat roof with the aid of for example screws. Next, panel 27' to be installed is brought in a position relative to panel 27 so that the second part 34 is pressed onto the first part 31. This causes the first part 31 to be pressed into the recess 32. Next, panel 27' can be turned in the direction indicated by arrow P2 and be pushed in the direction of panel 27 until panel 27' has assumed the position indicated in Figures 7.
The protective layer 29 of the panels 27, 27' preferably comprises a waterproof membrane such as a plastic film or a bituminous layer.
Next, for example a bituminous or plastic layer is in a usual way applied to the protective layer 29. Such a roofing system is suitable for a so-termed flat roof.
The protective layer 29 can also be designed as a reinforced APP-modified bituminous layer as described in NL-1003689 , onto which a bituminous layer (top layer) can be applied to obtain a double-layer bituminous cover layer known per se.
It should be noted that panel 7 is also suitable for use on a flat roof while panel 27 is also suitable for use on a sloping roof.
Panels 7 and 27 are of course also suitable for use on a so-termed purlin roof.
It is also possible to link the ends of the panels extending perpendicularly to the first and second ends to one another in a same way as the first and second ends of the panels.
The panels may also have a square design.
The insulating material is for example EPS.
Also, before two panels are linked, the first end may be pressed into the recess and be fixed in the recess with the aid of a means of attachment such as glue or a nail.
The recess may also be provided in the insulating layer relatively close to the protective layer, with there being a relatively thin layer between the recess and the protective layer. In this case, too, the first part may be positioned in the recess with the aid of the second part.

Claims

A roofing system comprising a number of panels (7) linked to one another, each panel being provided with an insulating layer (9), a protective layer (10) connected to the insulating layer (9) and a first (12) and second (15) end, the first end (12) of a panel being linked to the second end (15) of a next panel, with a recess (14) being provided near the first end (12), between a first part (13) of the protective layer (10) and the insulating layer (9), when the panels (7) are not linked, and near the second end (15) a second part (16) of the protective layer (10) extends to beyond the insulating layer (9), and, when the first and second ends (12, 15) of two panels (7) are linked together, the first part (13) of the protective layer (10) lies between the second part (16) of the protective layer (10) and the insulating layer (9) in the recess (14), characterized in that, before the panels (7) are linked together, the first part (13), the second part (16) and a third part (17) lying between the first and the second part (16) of the protective layer (10) practically lie in a same flat plane.
A roofing system according to claim 1, characterized in that the first part (13) of the protective layer (10) lies in the recess (14) under spring force.
A roofing system according to either one of claims 1 or 2, characterized in that, on a side facing away from the protective layer (10), the insulating layer (9) comprises a recessed part near the first end (12) while the insulating layer (9) is near the second end (15) provided with a projection that fits into the recessed part of the first end (12).
A roofing system according to claim 3, characterized in that the projection extends almost as far as the second part (16) of the protective layer (10).
A roofing system according to any one of the preceding claims, characterized in that the panel is on a side of the insulating layer (9) facing away from the protective layer (10) provided with a finishing layer.
A roofing system according to any one of the preceding claims, characterized in that in the case of a sloping roof the second end (15) of a panel lies lower than the first end (12).
A roofing system according to any one of the preceding claims, characterized in that a third part of the protective layer (10) lying between the first part (13) and the second part (16) of the protective layer (10) lies more or less in a same plane as the second part (16) of a next panel.
A roofing system according to any one of the preceding claims, characterized in that the first part (13) is longer than the second part (16), preferably 1.5 to 2 times as long.
A roofing system according to any one of the preceding claims, characterized in that the protective layer (10) comprises chipboard or a coating.
A panel suitable for use in a roofing system according to any one of the preceding claims, which panel is provided with an insulating layer (9), a protective layer (10) connected to the insulating layer (9) and first and second ends (12, 15), with a recess (14) being provided near the first end (12), between a first part (13) of the protective layer (10) and the insulating layer (9), while a second part (16) of the protective layer (10) near the second end (15) extends to beyond the insulating layer (9), and which panel can be linked to a second identical panel in such a way that the first part (13) of the protective layer (10) of the panel lies between the second part (16) of the protective layer (10) of the second identical panel and the insulating layer (9) of the panel and lies in the recess (14) of the panel, characterized in that, before the panels (7) are linked together, the first part (13), the second part (16) and a third part (17) lying between the first and the second part (16) of the protective layer (10) practically lie in a same flat plane.
A panel according to claim 10, characterized in that the protective layer (10) comprises chipboard or a coating.