EP0303738A1

EP0303738A1 - Insulating tile for applying on roofs, galleries and such like

Info

Publication number: EP0303738A1
Application number: EP87201584A
Authority: EP
Inventors: Jan Hendrik Van Delzen
Original assignee: Commercial Roof Service BV
Current assignee: COMMERCIAL ROOF SERVICE B.V.
Priority date: 1987-08-20
Filing date: 1987-08-20
Publication date: 1989-02-22
Anticipated expiration: 2007-08-20
Also published as: DE3776339D1; EP0303738B1; ATE72003T1

Abstract

Insulating tile (1,2) for applying on roofs, galleries and such like, said tile (1,2) comprising a tray (9) of a synthetic material, which tray (9) is filled with an insulating material (6,12), the bottom plate (10) of said tray (9) forming the upper surface of the tile (1,2) when this is applied on a roof, a gallery and such like, said tray (9) being closed by means of a bituminous layer (15) or a sheet (13) of synthetic material. Said closing sheet (13) can form an integral part with said tray (9) so that the tile is formed by a casing (5) being filled with insulating material (6,12).

Description

SUMMARY OF INVENTION

The invention relates to an insulating tile for applying on roofs, galleries and such like, said tile at least partially consisting of synthetic material.
A number of years ago it became customary to insulate roofs etc. and then, generally speaking, the insulation was applied below the water proof layer and on this water proof layer roofing tiles were applied as ballast and for making the roof suitable for walking on it. Said tiles were made of concrete.
At the moment it is becoming more and more customary first to apply a water proof layer, then the insulation and after this the tiles which then serve as ballast and are making the roof suitable for walking on it.
Applying such an insulating layer and the tiles afterwards not only brings much labour with it but in case of a flat roof it often happens that in such an existing building the lead sheet is not having such a height that it is suitable to comprise the total thickness of insulating material and the tiles.
When e.g. one wants to provide an existing gallery with a layer of insulating material and tiles it often appears that the thresholds of the doors opening on said gallery are positioned too low. When at that place the insulating material is omitted a large heat transmitting surface will exist at that place bringing objections with it.
It is tried to remove this disadvantage by using tiles consisting of a layer of foamed synthetic material with on it a layer of concrete with a thickness of about 15 mm. Such tiles are affixed to the water proof layer by means of a cold working glue. Although by this the weight applied on each square meter could be lowered, in most cases the thickness of said tiles is still too large. Further said tiles can easily be broken when they are subjected to a high mechanical load and in many cases problems arise in connection with expansion of said tiles, the absorbing of water by said tiles and the durability against ultra-violet radiation.
The object of the present invention is to provide an insulating tile which is not showing the above indicated problems and by which a good insulation of the construction below it can be obtained.
To this end a tile according to the invention comprises a tray made of a synthetic material and consisting of a bottom plate and upstanding side walls, said tray being filled with an insulating material, the bottom plate of said tray forming the upper surface of the tile when this is applied on a roof, a gallery and such like.
So the tray is protecting the insulating material and by making said tray from synthetic material also the tray is having a low thermal conductivity so that substantially the total thickness of the tile is contributing to the insulation of the construction below it.
In view of the fact that the weight of the tiles according to the invention can be lowered to about 10 to 15 kg/m² the tiles according to the present invention can also be used for interior floors, which is not possible in case of the known tiles.
It is preferred that said tray is made from a synthetic material which is resistent to ultra-violet radiation and to acids so that the tiles according to the invention will be very durable.
When one has to walk onto the tiles, at least the upper surface of each tile, so the bottom plate of the tray will be provided with a rough or profiled surface, so that the possibility that one slips will be as small as possible.
According to an embodiment of the invention the free surface of the insulating material received in the tray is covered with a layer of bituminous material extending itself till the upstanding side walls of the tray.
In this way it is prevented that water can reach the insulating material.
It is, however, also possible that a tile is laid down in a bituminous material which is brought onto the roof or gallery which has to be provided with tiles.
It is also possible to close the tray by means of a sheet of synthetic material being fixed to the side walls of the tray by an adhesive or forming an integral part with said tray.
If said closing sheet is forming an integral part with said tray a casing is obtained which e.g. can be manufactured by means of a blowing technic. This in particular can be applied when as insulating material use is made of a gas such as air. Applying other insulating materials, however, is also possible although then special provisions will have to be made for bringing the insulating material into the casing.
When one has to walk onto the tiles it will be clear that the dimensions of the upper surface of the tiles cannot be too large when a gas is used as insulating material.
When high demands are made upon the strength of the tiles it is preferred that a solid insulating material is used.
Such a material can be in the shape of a granular material such as grains of perlite which are connected with each other and with the tray or casing by means of a hardening binding agent.
Such a tile is having the advantage that it can be easily cut through or sawn without giving much troubles. Then the tiles also can be used for relatively small spaces in which many tiles have to be cut through.
According to an embodiment of the invention the inner side of the tray or the casing can be provided with a metal coating or metal foil. By this an additional heat resistance can be obtained.
The tiles according to the invention can be connected to the related surface of a roof, a gallery or such like by means of known adhesives which are not attacking the roof covering and the synthetic material of the tiles.
When on given places use is made of the tiles having one side wall the length of which is half the length of the normal tile, the tiles can be applied in various bonds and by using synthetic materials with various colours pleasant combinations can be obtained. As opposed to the colouring of concrete is much difficulter and the colours are not very weather resistant.
According to an embodiment of the invention one or more side walls of a tile can be profiled so that the adjacent sides of two tiles can fit into each other and a strong bond between the tiles is obtained.
In certain cases applying the tiles will be easier too.
It will be obvious that in case of a square or rectangular tile the four side walls can be provided with a profile. The profile can be dove-tail shaped so that the tiles after applying on the related surface cannot be shifted in respect of each other. In that case special tiles, if any, can be provided with a straight side wall so that they can be used along the edges of the tiled surface. By a suitable shape of the tiles also sloping roofs can be covered with the tiles according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention, as well as the above and other objects and the nature and advantages of the instant invention, some embodiments thereof will now be described with reference to the attached drawings, it being understood that these embodiments are to be intended as merely exemplary and in no way limitative.

Fig. 1 shows a plan view of some assembled tiles;
Fig. 2 shows a cross section according to the line II-II of Fig. 1;
Fig. 3 shows a cross section of another embodiment of a tile according to the invention at an enlarged scale; and
Fig. 4 shows a cross section of still another embodiment of a tile according to the invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

Fig. 1 shows a plan view of two tiles 1 and of a "half" tile 2. By using such tiles 2 a straight edge can be obtained also when using profiled side edges.
In case of the shown embodiment one side of a tile 1 is provided with a recess 3 and at the opposite side with an extension 4. The shape of the recess 3 and of the extension 4 is such that a fixed bond between the tiles is obtained.
As in particular appears from Fig. 2 each tile 1, 2 comprises a casing 5 made of a synthetic material which is resistant to ultra-violet radiation and acids. The casing 5 is filled with grains of perlite 6 which are connected to each other and to the casing 5 by means of an hardened binding agent 7. In this way a stable tile is obtained on which tile can be walked.
The upper surface 8 of the casing 5 of a tile can be provided with a not shown profile to prevent that a person will slip when walking on the tile.
The tile shown in Fig. 3 comprises a tray 9 consisting of a bottom plate 10 and upstanding side walls 11, which tray is filled with the insulating material 12 and is closed by means of the bottom plate 13 which is fixedly connected to the side walls 11 as by means of an adhesive.
It will be obvious, that principally the tile as shown in Fig. 2 also comprises a tray and a bottom plate in which case, however, the bottom plate is forming an integrally part with said tray so that a closed casing 5 is obtained.
In case of the tile according to Fig. 3 the inner surface of the tray 9 and of the bottom plate 13 are covered with a metallic foil or film 14 as indicated by the broken lines. In the same way as described above the tray 9 is filled with grains of perlite which are connected together and to the foil 14 by means of a binding agent.
It is, however, also possible that the insulating material is formed by a foamed synthetic material as e.g. polyurethane.
Fig. 4 shows a tile consisting of a tray 9 as corresponding to the tile of Fig. 3. In the case of the tile of Fig. 4, however, the insulating material itself is forming a closed lower surface or is covered by means of a layer 15 of a bituminous material. During the production of the tile the tray 9 will be positioned with the open side upwardly, then the tray 9 will be filled with insulating material and then a layer of a bituminous material will be rolled all over the tray and will be pressed against the edges of the side walls of the tray and against the insulating material. In this way an easy and so cheap production of the tiles according to the invention can be reached.
It will be obvious to those skilled in the art that only some embodiments of a tile according to the invention are shown in the drawings and are described above and that various changes may be made without departing from the scope of the invention.

Claims

1. Insulating tile for applying on roofs, galleries and such like, said tile (1,2) at least partially consisting of synthetic material,
characterized in
that said tile (1,2) comprises a tray (5,9) made of a synthetic material and consisting of a bottom plate (10) and upstanding side walls (11), said tray (5,9) being filled with an insulating material (6,12), the bottom plate (10) of said tray (5,9) forming the upper surface of the tile (1,2) when this is applied on a roof, a gallery and such like.

2. Insulating tile according to claim 1,
characterized in
that said tray (5,9) is made from a synthetic material which is resistant to ultra-violet radiation and to acids.

3. Insulating tile according to claim 1 or 2,
characterized in
that at least the upper surface (8) of the tile (1,2) is provided with a rough or profiled surface.

4. Insulating tile according to one of the preceding claims,
characterized in
that the free surface of the insulating material (12) received in the tray (9) is covered with a layer (15) of bituminous material extending itself till the upstanding side walls (11) of the tray (9).

5. Insulating tile according to one of the preceding claims,
characterized in
that the tray (9) is closed by means of a sheet (13) of synthetic material being fixed to the side walls (11) of the tray (9).

6. Insulating tile according to claim 5,
characterized in
that the closing sheet (13) of the tray (9) is forming an integral part with said tray to obtain a closed casing (5).

7. Insulating tile according to claim 6,
characterized in
that the casing (5) is obtained by means of a blowing technique.

8. Insulating tile according to one of the preceding claims,
characterized in
that as insulating material use is made of grains of perlite (6) which are connected with each other and with the tray (9) or casing (5) by means of a hardening bending agent (7).

9. Insulating tile according to one of the claims 1-7,
characterized in
that as insulating material use is made of a foamed synthetic material such as polyurethane.

10. Insulating tile according to one of the preceding claims,
characterized in
that the inner side of the tray (9) or the casing (5) is provided with a metal coating or metal foil or film (14).

11. Insulating tile according to one of the preceding claims,
characterized in
that one or more side walls (11) of the tile (1,2) are profiled (3,4) so that the adjacent sides of two tiles (1,2) can fit into each other.