WO1997029256A1 - Roofing layer and method for applying a roofing making use thereof - Google Patents
Roofing layer and method for applying a roofing making use thereof Download PDFInfo
- Publication number
- WO1997029256A1 WO1997029256A1 PCT/BE1997/000014 BE9700014W WO9729256A1 WO 1997029256 A1 WO1997029256 A1 WO 1997029256A1 BE 9700014 W BE9700014 W BE 9700014W WO 9729256 A1 WO9729256 A1 WO 9729256A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roofing
- layer
- roofing layer
- layer according
- pressure relief
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/12—Roof covering by making use of flexible material, e.g. supplied in roll form specially modified, e.g. perforated, with granulated surface, with attached pads
Abstract
Roofing layer in the shape of a strip which has a profiled vapour pressure relief layer (3) on the bottom side (2), characterized in that this vapour pressure relief layer (3) has one or a combination of two or more of the following characteristics: profiles with free spaces (6) which extend over 55 to 70 % of the total surface; profiles with free spaces (6) which are formed of channels (9-10) with a width (B2) of at least 5 cm; profiles with channels (9-10) in the form of a grate; profiles whereby material parts (4) in the shape of a nodular pattern are provided.
Description
Roofing layer and method for applying a roofing making use thereof.
The present invention concerns a roofing layer, in particular on a bituminous roof covering membrane.
In order to prevent the formation of blisters, which may cause premature leaks, it is known to build in a vapour pressure relief layer on the bottom side of such a roofing layer. Such a vapour pressure relief layer consists of a profiled layer, such that after the roofing layer has been applied, free spaces remain on the bottom side of this layer which make it possible for the vapour, which may be formed under the roofing layer, to be distributed, so that the formation of local high vapour pressures, which cause the formation of blisters, is excluded.
In the embodiments known until now, the vapour pressure relief layer is formed of line-shaped profiles extending in the longitudinal direction of the roofing layer and having a width of 2.5 cm, in between which narrow vapour distribution channels, also having a width of 2.5 cm, are provided, whereby connections are only provided at larger distances between the channels situated next to one another.
The invention aims to provide a roofing layer with a built-in vapour pressure relief layer which is improved in many ways in comparison to the above-mentioned embodiment.
To this aim, the invention consists of a roofing layer which has a profiled vapour pressure relief layer on the bottom side, characterized in that this vapour pressure relief layer has one or a combination of two or more of the following characteristics:
- profiles with free spaces which extend over 55 to 70% of the total surface;
- profiles with free spaces which are formed of channels with a width of at least 5 cm;
- profiles with channels in the form of a grate;
- profiles whereby material parts in the shape of a nodular pattern are provided.
According to the most preferred embodiment, all these characteristics are combined.
By using profiles with free spaces which clearly extend over more than half of the surface, the vapour will be distributed considerably more efficiently than in the above-mentioned known embodiment, where this value amounts to hardly 50%.
In an optimal embodiment, the bearing face of the profiles will be about 40% of the total surface, and the free spaces will consequently occupy 60%, as an ideal compromise is offered in this manner according to the invention between the possibility of a good adhesion to the basis on the one hand and a good vapour distribution on the other hand.
By making use of channels with a width of at least 5 cm, silting up caused by excessive fusing of the profiles will be excluded and the passage of the vapour is
guaranteed, as opposed to the above-mentioned known embodiment, where the channels with a width of 2.5 cm silt up as soon as the slightest irregularity occurs during the welding.
In an optimal embodiment, the width of the channels is 7 to 8 cm.
By making use of channels in the shape of a grate, the vapour can be distributed very efficiently in all directions, as opposed to the above-mentioned known embodiment, where the vapour can mainly be carried off merely linearly and thus must be pushed away over a larger distance to obtain the same effect.
By making use of profiles with a nodular pattern, the heat supplied to the profiles will spread less fast than in the case of line-shaped, continuous profiles, and consequently a local superheating will only cause a small amount of material to flow out, so that the risk of silting up is very small.
The invention also concerns a method for applying a roofing, whose characteristics will be described below.
In order to better explain the characteristics of the invention, the following preferred embodiment is given as an example only without being limitative in any way, with reference to the accompanying drawings, in which:
figure 1 shows a roll of a roofing layer according to the invention; figure 2 shows the bottom side of the roofing layer of figure 1;
figures 3 , 4 and 5 show sections according to lines III-III, IV-IV and V-V in figure 2 to a larger scale; figure 6 shows the part which is indicated in figure 2 with F6 to a larger scale.
As represented in the figures, the invention concerns a roofing layer 1 with a profiled vapour pressure relief layer 3 on the bottom side 2, formed of material parts 4 which form local bulges with bearing faces 5, and intermediate spaces 6 which make it possible for the vapour to be distributed when the roofing layer 1 is provided on a basis.
The roofing layer 1 is carried out as a strip, for example with a width BI of 1 meter and with a total length of for example 7.5 m.
The roofing layer 1 has a base layer 7 with a thickness Dl of for example 3 to 5 mm, which consists of or is based on bitumen. Preferably, it consists of a plastomer bitumen which has considerably better characteristics than the often used elastomeric bitumen. Particularly good properties are obtained when atactic polypropylene (APP) is used. The most preferred composition contains about 70% bitumen and 30% atactic polypropylene.
As is schematically represented in figure 2, but not in the figures 3, 4 and 5 for clarity's sake, the base layer 7 is preferably provided with a reinforcement formed of a mat 8 of filaments. Preferably, this mat 8 consists of a composition material of glass fibres in the longitudinal direction and polyester fibres in the width. Use can hereby be made of a non-woven composition
material, for example 180 g/m2 , whose filaments are needled first and subsequently bound by means of a chemical resin.
The vapour pressure relief layer 3 preferably consists of a supplementary coating layer. Hereby, the above- mentioned material parts 4 can be provided against the bottom side of the base layer 7 by means of rotating stamps.
The vapour pressure relief layer 3 preferably consists of a self-adhesive plastomer bitumen which is easily thermally activated.
The thickness D2 of the vapour pressure relief layer 3 is preferably less than 1 mm, for example 0.5 mm.
The invention is special in that the vapour pressure relief layer 3 has one or more characteristics as described in the introduction. In the example shown, a combination of all these characteristics was made.
First of all, this implies that the vapour pressure relief layer 3 has profiles, whereby the above-mentioned spaces 6 cover 55 to 70% of the total surface.
The spaces 6 are hereby carried out in the shape of channels, 9 and 10 respectively, with a width B2 of at least 5 cm and preferably 7 to 8 cm. These channels 9-10 preferably form a grate.
In particular, the channels 9-10 preferably extend in the diagonal direction as represented in figure 2, whereas the intermediate material parts 4 form diamond-shaped
nodules. These diamonds are preferably square and show sides with a length LI which is between 8 and 12 cm.
The roofing layer 1 is provided with a cover strap 12-13 respectively on the bottom side 2 and on the top side 11, whereby the cover straps on the bottom side and top side are situated on the opposite edges 14-15 respectively.
The cover strap 12 on the bottom side 2 may consist of a plastomer bitumen which is easily thermally activated, for example of the same material and with the same thickness as the above-mentioned material parts 4.
The bottom side 2 is provided with an anti-tack coat in the channels 9-10, which in the example shown is formed of a mineral layer 16, for example quartz sand and/or talc.
On the bottom side may be provided a continuous burn-away foil 17, for example with a thickness D3 of 0.01 to 0.02 mm, which is precisely in line with the edges 14-15 of the roofing layer 1.
As represented in the figures 3 to 5, this burn-away foil 17 can be applied by sticking it against the self- adhesive elastomeric bitumen of the material parts 4 and the cover strap 12. A good adhesion is obtained by pressing on this layer with a flat roller.
The burn-away foil 17 aims to prevent the bottom side 2 from adhering to the top side 11 during the rolling up.
As represented in figures 3 to 5, the top side 11 of the roofing layer 1 can be provided with rolled-in, crushed
slates 19. As is shown in figure 3, these crushed slates 19 can be omitted over a certain width B3 along the edge 15 so as to form the above-mentioned cover strap 13. This cover strap 13 can also be covered by means of a burn-away foil 20.
The roofing layer 1 represented in the figures is applied in the traditional manner. During the application, the bottom side is heated with a light flame, so that the burn-away foil 17 disappears and the roofing layer 1 becomes adhesive on the bearing faces 5. The layer 16 prevents any adhesion in the channels 9-10.
It is clear that vapour which might be formed under this layer after the roofing layer has been applied, can be easily spread through the channels 9-10, so that no high vapour pressures can arise locally.
Unlike in the known embodiments, the large, diagonally- shaped channel structure constantly guarantees an optimal vapour pressure relief.
Although the example of figures 1 to 6 is related to a top layer, it is clear that the invention can also be applied with a roofing layer 1 which is meant to be used as an underlayer. There will be no crushed slates 19 in this case. The top side may consist of oxidized bitumen, possibly chipped with talk.
In the case of an embodiment as an underlayer, the top side may possibly also be provided with a burn-away foil.
According to a variant which is not represented in the figures, the anti-tack coat, which is formed of the layer
16 in the figures 3 to 5, may also be formed by providing the roofing layer 1 with a reinforcement mat or fleece which is adjacent to the outer side on the channels, in other words by coating the reinforcement mat with bitumen or such on merely one side. The naked reinforcement mat will then provide for the anti-tack effect.
According to a special embodiment, the bottom side will be provided with a pull-of foil instead of a burn-away foil. This pull-off foil may for example consist of paper or such, which is provided with silicones at least on the adhesive side.
This embodiment is particularly suitable for roofing layers which are designed as underlayers. The underlayer may hereby be provided unheated at first, whereby a first adhesion is provided for thanks to the self-adhesive effect of the vapour pressure relief layer that is obtained after the removal of the pull-off foil.
By making use of such an underlayer, it is possible according to the invention to provide a roofing by successively removing the pull-off protective foil of the above-mentioned roofing layer; by applying this layer unheated as an underlayer, whereby a first adhesion and positioning takes place thanks to the self-adhesive effect; and by welding a second layer onto it, whereby the underlayer is forced to adhere on the basis as a result of the thermal transmission caused during the welding of the second layer. This method offers the advantage that only one welding cycle is required to make the two layers adhere.
The present invention is by no means restricted to the
embodiments described as an example and represented in the accompanying drawings; on the contrary, such a roofing can be made according to all sorts of variants while still remaining within the scope of the invention.
Claims
1. Roofing layer in the shape of a strip which has a profiled vapour pressure relief layer (3) on the bottom side (2) , characterized in that this vapour pressure relief layer (3) has one or a combination of two or more of the following characteristics:
- profiles with free spaces (6) which extend over 55 to 70% of the total surface;
- profiles with free spaces (6) which are formed of channels (9-10) with a width (B2) of at least 5 cm; - profiles with channels (9-10) in the form of a grate;
- profiles whereby material parts (4) in the shape of a nodular pattern are provided.
2. Roofing layer according to claim 1, characterized in that all the above-mentioned characteristics are combined in the vapour pressure relief layer (3) .
3. Roofing layer according to claim 1 or 2, characterized in that the channels (9-10) of the vapour pressure relief layer (3) extend diagonally in relation to the longitudinal direction of the roofing layer (1) .
4. Roofing layer according to any of the preceding claims, characterized in that the material parts (4) of the vapour pressure relief layer (3) are diamond-shaped.
5. Roofing layer according to claim 4, characterized in that the material parts (4) consist of squares whose sides have a length (LI) of 8 to 12 cm and preferably of 10 cm.
6. Roofing layer according to any of the preceding claims, characterized in that the profiles have channels
(9-10) with a width (B2) of 7 to 8 cm.
7. Roofing layer according to any of the preceding claims, characterized in that the free spaces (6) of the vapour pressure relief layer (3) occupy about 60% of the bottom side (2) of the roofing layer (1) .
8. Roofing layer according to any of the preceding claims, characterized in that at least the vapour pressure relief layer (3) consists of a plastomer bitumen which is easily thermally activated.
9. Roofing layer according to claim 8, characterized in that the plastomer bitumen consists of bitumen mixed with atactic polypropylene (APP) .
10. Roofing layer according to any of the preceding claims, characterized in that it is provided with a reinforcement formed of a mat (8) of filaments, with glass fibres in the longitudinal direction and polyester fibres in the width, whereby this mat (8) is needled first and the filaments are bound by means of a resin.
11. Roofing layer according to any of the preceding claims, characterized in that the bottom side (2) is provided with an anti-tack coat in the channels (9-10) , formed of a mineral layer (16) .
12. Roofing layer according to any of claims 1 to 10, characterized in that the bottom side (2) is provided with an anti-tack coat in the channels (9-10) , formed as the roofing layer (1) is provided with a reinforcement mat or fleece in the channels (9-10) which is adjacent to the outer side.
13. Roofing layer according to any of the preceding claims, characterized in that the strip is provided with a cover strap (12-13) on the bottom side (2) and on the top side (11) , whereby the cover straps (12-13) on the bottom side and top side are situated on the opposite edges (14-15) respectively.
14. Roofing layer according to any of the preceding claims, characterized in that the bottom side (2) is provided with a burn-away foil (17) .
15. Roofing layer according to any of claims 1 to 13, characterized in that the vapour pressure relief layer (3) is self-adhesive and in that it is provided with a pull-off foil.
16. Roofing layer according to claim 15, characterized in that the pull-off foil is provided with silicones at least on its adhesive side.
17. Method for applying a roofing, with a roofing layer as described in claims 15 or 16, characterized in that it consists of the removal of the pull-off protective foil of the above-mentioned roofing layer; in applying this layer unheated as an underlayer, whereby a first adhesion and positioning takes place thanks to the self-adhesive effect; and by welding a second layer onto it, whereby the underlayer is forced to adhere on the basis as a result of the thermal transmission caused during the welding of the second layer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL97322661A PL322661A1 (en) | 1996-02-05 | 1997-02-04 | Roofing layer and method of placing roof covering material using that layer |
| AU15859/97A AU1585997A (en) | 1996-02-05 | 1997-02-04 | Roofing layer and method for applying a roofing making use thereof |
| DE29780125U DE29780125U1 (en) | 1996-02-05 | 1997-02-04 | Roofing membrane |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9600100A BE1010010A3 (en) | 1996-02-05 | 1996-02-05 | Roofing layer and method for applying a roofing that uses thereof. |
| BE9600100 | 1996-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997029256A1 true WO1997029256A1 (en) | 1997-08-14 |
Family
ID=3889516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BE1997/000014 WO1997029256A1 (en) | 1996-02-05 | 1997-02-04 | Roofing layer and method for applying a roofing making use thereof |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU1585997A (en) |
| BE (1) | BE1010010A3 (en) |
| DE (1) | DE29780125U1 (en) |
| PL (1) | PL322661A1 (en) |
| WO (1) | WO1997029256A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0979906A3 (en) * | 1998-08-10 | 2001-05-02 | Roland-Werke Dachbaustoffe und Bauchemie GmbH & Co. KG | Vapour barrier sheet |
| NL1015241C2 (en) * | 2000-05-19 | 2001-11-20 | Redeahold Apeldoorn B V | Roof covering film, has bottom side covered with layer of flame retardant plastic |
| WO2002020267A1 (en) * | 2000-09-06 | 2002-03-14 | Icopal A/S | A method for the manufacture of a bituminous coating sheet and such coating sheet |
| WO2003097349A1 (en) * | 2002-05-15 | 2003-11-27 | W. R. Grace & Co. Conn | Skid resistant moisture barriers and process for making same |
| WO2004106659A2 (en) * | 2003-05-29 | 2004-12-09 | Collins David A | Print methodology for applying polymer materials to roofing materials |
| US8079184B2 (en) | 2005-08-09 | 2011-12-20 | W. R. Grace & Co.-Conn. | Skid resistant surfaces |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA875810A (en) * | 1969-11-03 | 1971-07-20 | Ili Inventors Marketing And Development Corporation Ltd. | Thermal insulation |
| DE2734004A1 (en) * | 1977-07-28 | 1979-02-15 | Ruberoidwerke Ag | BITUMINOESE ROOFING AND SEALING Membrane |
| EP0145064A2 (en) * | 1983-12-02 | 1985-06-19 | Modiglass Modified Asphalt- And Glassmatmachines Ltd | Sheet of roofcovering material |
| NL8402623A (en) * | 1984-08-29 | 1986-03-17 | Cbl Consolidated Ltd Basel | Roofing material has bituminised web carrier - between bitumen layers, lower layer has self-adhesive underside and is partly anti-adhesive covered |
| EP0178353A1 (en) * | 1984-10-16 | 1986-04-23 | Coal Industry (Patents) Limited | Improvements in roofing |
| EP0185169A2 (en) * | 1984-12-20 | 1986-06-25 | Bay Mills Limited | Reinforcing composite for roofing membranes and process for making such composites |
| EP0203609A2 (en) * | 1985-05-31 | 1986-12-03 | Aktieselskabet Jens Villadsens Fabriker | Method for the production of a waterproof coating on a surface and sheet materials suitable for use in connection with said method |
| DE9101338U1 (en) * | 1991-02-06 | 1991-04-25 | Ruetgerswerke Ag, 6000 Frankfurt, De | |
| WO1991014570A1 (en) * | 1990-03-26 | 1991-10-03 | Gs Roofing Products Company, Inc. | Fire resistant roofing system |
| BE1005075A3 (en) * | 1991-07-12 | 1993-04-13 | Performance Roof Systems En Ab | Asphalt membrane |
| FR2706506A1 (en) * | 1993-06-10 | 1994-12-23 | Siplast Sa | Sealing layer made of bituminous material and method of manufacturing such a layer |
| JPH0752299A (en) * | 1993-08-17 | 1995-02-28 | Unitika Ltd | Laminated sheet for asphalt roofing |
-
1996
- 1996-02-05 BE BE9600100A patent/BE1010010A3/en not_active IP Right Cessation
-
1997
- 1997-02-04 WO PCT/BE1997/000014 patent/WO1997029256A1/en active Application Filing
- 1997-02-04 DE DE29780125U patent/DE29780125U1/en not_active Expired - Lifetime
- 1997-02-04 PL PL97322661A patent/PL322661A1/en unknown
- 1997-02-04 AU AU15859/97A patent/AU1585997A/en not_active Abandoned
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA875810A (en) * | 1969-11-03 | 1971-07-20 | Ili Inventors Marketing And Development Corporation Ltd. | Thermal insulation |
| DE2734004A1 (en) * | 1977-07-28 | 1979-02-15 | Ruberoidwerke Ag | BITUMINOESE ROOFING AND SEALING Membrane |
| EP0145064A2 (en) * | 1983-12-02 | 1985-06-19 | Modiglass Modified Asphalt- And Glassmatmachines Ltd | Sheet of roofcovering material |
| NL8402623A (en) * | 1984-08-29 | 1986-03-17 | Cbl Consolidated Ltd Basel | Roofing material has bituminised web carrier - between bitumen layers, lower layer has self-adhesive underside and is partly anti-adhesive covered |
| EP0178353A1 (en) * | 1984-10-16 | 1986-04-23 | Coal Industry (Patents) Limited | Improvements in roofing |
| EP0185169A2 (en) * | 1984-12-20 | 1986-06-25 | Bay Mills Limited | Reinforcing composite for roofing membranes and process for making such composites |
| EP0203609A2 (en) * | 1985-05-31 | 1986-12-03 | Aktieselskabet Jens Villadsens Fabriker | Method for the production of a waterproof coating on a surface and sheet materials suitable for use in connection with said method |
| WO1991014570A1 (en) * | 1990-03-26 | 1991-10-03 | Gs Roofing Products Company, Inc. | Fire resistant roofing system |
| DE9101338U1 (en) * | 1991-02-06 | 1991-04-25 | Ruetgerswerke Ag, 6000 Frankfurt, De | |
| BE1005075A3 (en) * | 1991-07-12 | 1993-04-13 | Performance Roof Systems En Ab | Asphalt membrane |
| FR2706506A1 (en) * | 1993-06-10 | 1994-12-23 | Siplast Sa | Sealing layer made of bituminous material and method of manufacturing such a layer |
| JPH0752299A (en) * | 1993-08-17 | 1995-02-28 | Unitika Ltd | Laminated sheet for asphalt roofing |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 95, no. 5 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0979906A3 (en) * | 1998-08-10 | 2001-05-02 | Roland-Werke Dachbaustoffe und Bauchemie GmbH & Co. KG | Vapour barrier sheet |
| NL1015241C2 (en) * | 2000-05-19 | 2001-11-20 | Redeahold Apeldoorn B V | Roof covering film, has bottom side covered with layer of flame retardant plastic |
| WO2002020267A1 (en) * | 2000-09-06 | 2002-03-14 | Icopal A/S | A method for the manufacture of a bituminous coating sheet and such coating sheet |
| WO2003097349A1 (en) * | 2002-05-15 | 2003-11-27 | W. R. Grace & Co. Conn | Skid resistant moisture barriers and process for making same |
| US7459180B2 (en) | 2002-05-15 | 2008-12-02 | W. R. Grace & Co.-Conn. | Process for making skid resistant moisture barriers |
| WO2004106659A2 (en) * | 2003-05-29 | 2004-12-09 | Collins David A | Print methodology for applying polymer materials to roofing materials |
| WO2004106659A3 (en) * | 2003-05-29 | 2006-06-08 | David A Collins | Print methodology for applying polymer materials to roofing materials |
| US7201946B2 (en) * | 2003-05-29 | 2007-04-10 | David Allan Collins | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
| US7666498B2 (en) * | 2003-05-29 | 2010-02-23 | David Allan Collins | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
| US8137757B2 (en) | 2003-05-29 | 2012-03-20 | Fast Felt Corporation | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
| US8079184B2 (en) | 2005-08-09 | 2011-12-20 | W. R. Grace & Co.-Conn. | Skid resistant surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1585997A (en) | 1997-08-28 |
| BE1010010A3 (en) | 1997-11-04 |
| PL322661A1 (en) | 1998-02-16 |
| DE29780125U1 (en) | 1997-12-04 |
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