WO2007045760A1 - System for sealing and insulating building roofs - Google Patents

System for sealing and insulating building roofs Download PDF

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Publication number
WO2007045760A1
WO2007045760A1 PCT/FR2006/002334 FR2006002334W WO2007045760A1 WO 2007045760 A1 WO2007045760 A1 WO 2007045760A1 FR 2006002334 W FR2006002334 W FR 2006002334W WO 2007045760 A1 WO2007045760 A1 WO 2007045760A1
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WO
WIPO (PCT)
Prior art keywords
sealing
layer
insulating
polyurethane foam
producing
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PCT/FR2006/002334
Other languages
French (fr)
Inventor
Bruno Bony
Original Assignee
Ab2A
Sn Tsc
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Publication date
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Publication of WO2007045760A1 publication Critical patent/WO2007045760A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1662—Inverted roofs or exteriorly insulated roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
    • E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition

Definitions

  • the present invention relates to a system for sealing and insulating the roofs of buildings.
  • the watertightness of buildings is generally achieved using small elements (tiles, shingles, etc.) or large elements (sandwich panels, corrugated sheets, etc.) or with the aid of a waterproof layer. base of asphalt, bituminous sheets, resins or synthetic membranes.
  • Watertightness is, most of the time, associated with an insulating layer made using panels made of insulating materials (mineral wool, cellular plastic, cellular glass, perlite, etc.).
  • insulating materials mineral wool, cellular plastic, cellular glass, perlite, etc.
  • hot roofs When the insulating layer is located under the waterproof layer, it is called hot roofs.
  • bituminous sheets or synthetic membranes are delivered on site in the form of rolls which must be assembled to produce a waterproof layer.
  • the assemblies are long to achieve and can be a source of defects and lead to leaks including the edges of the roof in the vertical part that is commonly called “raised”.
  • seals made of asphalt have a weight of about 40 kg per m 2 while resin tightness rarely exceeds 3 kg per m 2 .
  • Seals resins have the advantage of allowing to achieve waterproof layers without fitting for a reduced weight.
  • All these seals can be put on a waterproof layer made of insulating panels.
  • the panels are fixed to the support by screws, glue or hot bitumen or any other method preventing the panels from flying off. They can also be simply placed on the support when the seal is asphalt, the weight of the waterproof asphalt layer being sufficient to prevent the flight of the panels.
  • the insulating layer is generally composed of extruded polystyrene panels.
  • the thickness of the panels depends on the insulation coefficient that is required. The higher the insulation coefficient required, the greater the thickness of the panels. These panels are then weighted with chippings to prevent their flight.
  • the layer of gravel is thicker as the panels themselves are thick. This has the disadvantage of adding weight on the roof since the layer of gravel can represent up to 20 kg per m 2 per centimeter of thickness.
  • the object of the invention is to overcome these drawbacks by proposing a resin seal that produces a continuous film, without a connection, and with an insulating layer that is also continuous.
  • the invention proposes to achieve this sealing and insulation system with the lowest weight possible so as not to have to strengthen the structure of the roof.
  • the process according to the invention which will be described more precisely in the document below, consists in producing a resin-based seal on which polyurethane foam is sprayed in sufficient thickness to obtain the required insulation coefficient.
  • the use of projected polyurethane foam is not new.
  • This product has the advantage of providing a layer that is both insulating and waterproof.
  • the application of the polyurethane foam is done in several passes. Each pass has a thickness of about 2 cm and it is necessary to make several passes to obtain a sufficient insulation coefficient.
  • the projection of the polyurethane foam is very sensitive to the conditions under atmospheric conditions during application and in particular to temperature, hygrometry, the presence of wind, etc.
  • the foam of Polyurethane is sensitive to UV and must be protected by an epidermis. Under the effect of temperature variations, the epidermis can crack and cracks extend to the polyurethane foam which causes infiltration and loss of tightness. That is why this technique has led to serious and costly disasters that have gradually removed its credibility and caused its near abandonment.
  • the projected polyurethane foam layer does not have an insulating function but a protective function of the sealing layer as can a layer of gravel. It is not in the spirit of the inventor to provide an insulating layer using the inverted insulation technique, but a protective layer of the seal against oxidation and the fact that it is made in one. single layer as shown in the diagrams, shows that it has a thickness of less than 2 cm which is notoriously insufficient to give it an insulating function.
  • an insulation is desired, it is carried out under the sealing layer according to the technique of the hot roof as indicated in column 4 line 27 and following of the document.
  • the sealing layer is made of resin and in a single pass which is faster and avoids the risk of defects.
  • the projected polyurethane foam layer is primarily defined as an insulating layer, which for the skilled person, in addition to its composition, the polyurethane imposes thickness constraints and therefore implementation in several passes. The proposed complex is therefore a true sealing and insulation complex, contrary to what is described in the document of the prior art.
  • the innovation is composed of a waterproof layer of resin adherent to the support and surmounted by polyurethane foam insulation projected in several passes to obtain the desired insulation coefficient.
  • the waterproof layer is made of resin.
  • the resin used can be a bicomponent solvent-free resin based on methyl methacrylate (MMA) constituting a membrane adherent to the support, continuous, 100% reactive elastomer, modified urethane. It is made from a mixture of two components: Component A and Component B.
  • MMA methyl methacrylate
  • each component is mixed separately to homogenize the components. Then, a catalyst based on dibenzoic peroxide in component B is added. The amount of catalyst is a function of the ambient temperature.
  • the support is prepared by
  • a primer layer consisting of a 2-component, methylene-methacrylate (MMA) resin of low viscosity and colorlessness is applied to the clean, dust-free support.
  • MMA methylene-methacrylate
  • This resin may be supplemented with a catalyst based on dibenzoic peroxide in a proportion of 1 to 6% by weight as a function of the ambient temperature.
  • the waterproof layer is then spray applied using equipment
  • the insulation is made of projected polyurethane foam.
  • the polyurethane foam is used directly on the resin-tight layer without preparation. It is obtained by mixing polyol and isocyanate in part equal. Prior to their use, each of the components must be homogenized. The implementation is carried out
  • This unit has its energy (electricity and compressed air). It consists of two booster pumps, a high-pressure metering machine with controlled heating and pressure, and heating tubes to hold the product at 60 ° C - 65 ° C up to the gun.
  • the gun is a two component Airless gun with fixed mixing ratio. The mixing pressures are between 70 and 120 bar.
  • a projection test is carried out consisting of projecting the number of layers provided on a layer of paper in order to assess the thickness, the projection pattern, the density of the foam, and its structure. and its hardness. Any area started must be terminated continuously over the total expected thickness except in the area of recovery.
  • the surface of the roof must be divided into elementary zones 130 corresponding to the projection capacity taking into account the atmospheric conditions.
  • the projection begins, for the first pass, by the reliefs and singular points, such as breakdowns, various outputs, etc. The successive passes in these areas are to be associated with those of the current parts to achieve a homogeneous complex.
  • the number of passes on the reliefs is 2 for a minimum thickness of 2 cm on the height 135 of the survey.
  • the first projection pass in the current section must be connected with the first pass of the readings previously processed.
  • the following passes are shifted or crossed so as to smooth the final appearance of the projected polyurethane foam.
  • the number of passes varies depending on the desired final thickness.
  • the implementation thickness of each layer is between 1 and 2 cm.
  • the width of the passes is about 1.50 m.
  • the lateral cover 140 is of the order of 30 cm.
  • the overlap between two successive passes should be done about 5 minutes apart.We will ensure that the gun remains perpendicular to the projection surface by avoiding sweeps.
  • the distance to the projection surface must be approximately 80 cm.
  • the areas of recovery has an offset of about 30 cm between layers. When reworking, the supporting foam must be dry and clean. Avoid starting on a recovery zone early in the morning because of the risk of condensation.
  • the complex can be completed with UV protection based on acrylic paint.
  • the painting must be put in place at least two hours after the end of the projection of the PROJITHANE foam.
  • the paint is carried out with an Airless spray gun or manually with a roller at a rate of 500 g / m 2, ie a thickness of approximately 500 ⁇ . This description has been made only to illustrate one way of carrying out the invention.
  • the present invention aims to define a system of waterproofing and inverted insulation used on the roofs of buildings.
  • the system is intended for building roofs and comprises a sealing layer surmounted by a layer of polyurethane foam 155 projected according to a first feature the waterproof layer is a resin layer surmounted by a layer made of polyurethane foam designed to insulate the building.
  • the implementation of the method is carried out on a load bearing element made of masonry or slabs of reinforced autoclave cellular concrete or of wood or panels derived from wood or of ribbed steel sheets.
  • the insulating layer of projected polyurethane foam is applied in adhesion directly to the waterproof layer.
  • the implementation of the insulating layer of projected polyurethane foam is in several passes and at least two.
  • the process is supplemented at the surface by a UV protection.
  • the resin sealing layer is adherent to the carrier element.

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

Abstract

The invention concerns a method for producing a system for sealing and insulating building roofs. The invention concerns a sealing and insulating system for building roofs. The system consists of a sealing resin layer for waterproofing the building located below and a projected insulating polyurethane foam layer solely providing the insulating function located above based on the so-called "inverted insulation" technique. The sealing and insulating system is implemented on roofs with total adherence. The execution of the insulating polyurethane foam layer is carried out in several passes until the required thickness is achieved. The sealing and insulating system is completed by protection against UV radiation.

Description

SYSTEME D'ETANCHEITE ET D'ISOLATION DES TOITURES DE BATIMENTSSYSTEM FOR SEALING AND INSULATING ROOFING ROOFS
La présente invention concerne un système d'étanchéité et d'isolation des toitures des bâtiments.The present invention relates to a system for sealing and insulating the roofs of buildings.
Elle concerne également son utilisation sur des bâtiments dont la toiture est composée d'éléments porteurs en maçonnerie, bois, panneaux dérivés du bois, tôles d'acier nervurées, dalles en béton cellulaire autoclave armé et plus généralement d'éléments porteurs offrant une surface suffisamment continue pour recevoir un complexe d'étanchéité.It also relates to its use on buildings whose roof is composed of load-bearing elements in masonry, wood, wood-based panels, ribbed steel sheets, reinforced autoclave cellular concrete slabs and, more generally, supporting elements that provide a sufficient surface area. continues to receive a sealing complex.
L'étanchéité des bâtiments est généralement réalisée à l'aide de petits éléments (tuiles, bardeaux, etc..) ou de grands éléments (panneaux sandwich, tôles ondulées, etc..) ou à l'aide d'une couche étanche à base d'asphalte, de feuilles bitumineuses, de résines ou encore de membranes synthétiques.The watertightness of buildings is generally achieved using small elements (tiles, shingles, etc.) or large elements (sandwich panels, corrugated sheets, etc.) or with the aid of a waterproof layer. base of asphalt, bituminous sheets, resins or synthetic membranes.
L'étanchéité est, la plupart du temps, associée à une couche isolante réalisée à l'aide de panneaux en matériaux isolants (laine minérale, plastique alvéolaire, verre cellulaire, perlite, etc.. ). On distingue deux familles d'isolation suivant la position de la couche isolante et de la couche étanche. Lorsque la couche isolante est située sous la couche étanche, on parle de toitures chaudes. Lorsque la couche isolante est située sur la couche étanche, on parle de toiture avec « isolation inversée ».Watertightness is, most of the time, associated with an insulating layer made using panels made of insulating materials (mineral wool, cellular plastic, cellular glass, perlite, etc.). There are two families of insulation according to the position of the insulating layer and the waterproof layer. When the insulating layer is located under the waterproof layer, it is called hot roofs. When the insulating layer is located on the waterproof layer, we speak of roofing with "inverted insulation".
Les feuilles bitumineuses ou les membranes synthétiques sont livrées sur chantier sous forme de rouleaux qui doivent être assemblés pour réaliser une couche étanche. Les assemblages sont longs à réaliser et peuvent être source de malfaçons et conduire à des pertes d'étanchéité notamment aux bords des toitures dans la partie verticale que l'on appelle communément « relevés ».The bituminous sheets or synthetic membranes are delivered on site in the form of rolls which must be assembled to produce a waterproof layer. The assemblies are long to achieve and can be a source of defects and lead to leaks including the edges of the roof in the vertical part that is commonly called "raised".
Les étanchéités en asphalte ou en résine, au contraire sont réalisées in situ et forment une couche étanche continue qui ne présente pas de raccord. Cependant, les étanchéités réalisées en asphalte ont un poids d'environ 40 kg par m2 alors que les étanchéité en résine dépasse rarement les 3 kg par m2. Les étanchéités en résines ont donc l'avantage de permettre de réaliser des couches étanches sans raccord pour un poids réduit.The asphalt or resin seals, on the other hand, are made in situ and form a continuous waterproof layer which has no connection. However, seals made of asphalt have a weight of about 40 kg per m 2 while resin tightness rarely exceeds 3 kg per m 2 . Seals resins have the advantage of allowing to achieve waterproof layers without fitting for a reduced weight.
Toutes ces étanchéités peuvent être mises sur une couche étanche réalisée en panneaux isolants. Les panneaux sont fixés au support par des vis, de la colle ou du bitume chaud ou tout autre méthode empêchant l'envol des panneaux. Ils peuvent également être simplement posés sur le support lorsque l'étanchéité est en asphalte, le poids de la couche étanche en asphalte étant suffisant pour éviter l'envol des panneaux.All these seals can be put on a waterproof layer made of insulating panels. The panels are fixed to the support by screws, glue or hot bitumen or any other method preventing the panels from flying off. They can also be simply placed on the support when the seal is asphalt, the weight of the waterproof asphalt layer being sufficient to prevent the flight of the panels.
Dans le cas des étanchéités en résine, il est nécessaire de disposer sur la couche en panneaux isolants, un écran afin d'obtenir une continuité du support. Cela induit un coût supplémentaire et c'est pourquoi, on préfère utiliser une isolation inversée avec ce type d'étanchéité. Dans ce cas, la couche isolante est généralement composée de panneaux en polystyrène extradé. L'épaisseur des panneaux dépend du coefficient d'isolation qui est demandé. Plus le coefficient d'isolation demandé est important, plus l'épaisseur des panneaux est importante. Ces panneaux sont ensuite lestés à l'aide de gravillons pour empêcher leur envol. La couche de gravillons est d'autant plus épaisse que les panneaux sont eux-même épais. Cela a l'inconvénient de rajouter du poids sur la toiture puisque la couche de gravillons peut représenter jusqu'à 20 kg au m2 par centimètre d'épaisseur.In the case of resin seals, it is necessary to have on the layer of insulating panels, a screen in order to obtain continuity of the support. This induces an additional cost and that is why it is preferred to use reverse isolation with this type sealing. In this case, the insulating layer is generally composed of extruded polystyrene panels. The thickness of the panels depends on the insulation coefficient that is required. The higher the insulation coefficient required, the greater the thickness of the panels. These panels are then weighted with chippings to prevent their flight. The layer of gravel is thicker as the panels themselves are thick. This has the disadvantage of adding weight on the roof since the layer of gravel can represent up to 20 kg per m 2 per centimeter of thickness.
L'invention a pour objet de pallier à ces inconvénients en proposant un étanchéité en résine réalisant un film continu, sans raccord et avec une couche isolante qui soit également continue. De plus, l'invention propose de réaliser ce système d'étanchéité et d'isolation avec un poids le plus faible possible afin de ne pas être obligé de renforcer la structure de la toiture.The object of the invention is to overcome these drawbacks by proposing a resin seal that produces a continuous film, without a connection, and with an insulating layer that is also continuous. In addition, the invention proposes to achieve this sealing and insulation system with the lowest weight possible so as not to have to strengthen the structure of the roof.
Le procédé selon l'invention, qui sera décrit plus précisément dans le document ci- après consiste à réaliser une étanchéité à base de résine sur laquelle on vient projeter de la mousse de polyuréthane en épaisseur suffisante pour obtenir le coefficient d'isolation demandé.The process according to the invention, which will be described more precisely in the document below, consists in producing a resin-based seal on which polyurethane foam is sprayed in sufficient thickness to obtain the required insulation coefficient.
L'utilisation de la mousse de polyuréthane projetée n'est pas nouvelle. Ce produit a l'avantage de réaliser une couche à la fois isolante et étanche. L'application de la mousse de polyuréthane se fait en plusieurs passes. Chaque passe a une épaisseur de 2 cm environ et il est nécessaire de faire plusieurs passes pour obtenir un coefficient d'isolation suffisant. Cependant, la projection de la mousse de polyuréthane est très sensible aux conditions aux conditions atmosphériques lors de l'application et notamment à la température, à l'hygrométrie, à la présence de vent, etc.... De plus, la mousse de polyuréthane est sensible aux UV et doit être protégée par un épiderme. Sous l'effet des variations de température, l'épiderme peut fissurer et les fissures s'étendent à la mousse de polyuréthane ce qui provoque des infiltrations et une perte d'étanchéité. C'est pourquoi cette technique a conduit à des sinistres graves et coûteux qui lui ont ôté peu à peu sa crédibilité et provoqué son quasi abandon.The use of projected polyurethane foam is not new. This product has the advantage of providing a layer that is both insulating and waterproof. The application of the polyurethane foam is done in several passes. Each pass has a thickness of about 2 cm and it is necessary to make several passes to obtain a sufficient insulation coefficient. However, the projection of the polyurethane foam is very sensitive to the conditions under atmospheric conditions during application and in particular to temperature, hygrometry, the presence of wind, etc. In addition, the foam of Polyurethane is sensitive to UV and must be protected by an epidermis. Under the effect of temperature variations, the epidermis can crack and cracks extend to the polyurethane foam which causes infiltration and loss of tightness. That is why this technique has led to serious and costly disasters that have gradually removed its credibility and caused its near abandonment.
Toutefois, si la mousse de polyuréthane projetée n'est plus étanche en présence de fissures, sa capacité d'isolation n'est pas affectée et elle peut continuer à être utilisée comme couche isolante comme cela est proposé dans l'invention.However, if the projected polyurethane foam is no longer sealed in the presence of cracks, its insulation capacity is not affected and it can continue to be used as an insulating layer as proposed in the invention.
Dans le brevet américain US 4,521,478 délivré le 4 Juin 1985 à M. Hageman, il est proposé un système d'étanchéité composé d'une première couche de bitume, de bitume modifié ou de goudron sur lequel est appliqué un voile de polyester, puis par une deuxième couche de bitume, de bitume modifié ou de goudron. L'ensemble est ensuite protégé par une couche de produit résistant à la chaleur comme des gravillons, de la mousse de polyuréthane ou encore, un mastic dans lequel sont enchâssés des granulats. Dans ce document, la couche d'étanchéité est toujours complexe. Elle est réalisée en bitume et en plusieurs passes ce qui présente à la fois un coût supplémentaire et des risques accrus de malfaçons. En effet, le bitume chaud doit percoler au travers du voile de polyester pour assurer le collage des couches de bitume entre elles ce qui n'est possible que si le bitume est suffisamment chaud. Dans ce document également, la couche en mousse de polyuréthane projetée n'a pas une fonction isolante mais une fonction de protection de là couche d'étanchéité comme peut l'avoir une couche de gravillons. H n'est pas dans l'esprit de l'inventeur de proposer une couche isolante utilisant la technique de l'isolation inversée, mais une couche de protection de l'étanchéité contre l'oxydation et le fait qu'elle soit réalisée en une seule couche comme indiquée sur les schémas, montre qu'elle a une épaisseur inférieure à 2 cm ce qui est notoirement insuffisant pour lui donner une fonction isolante. De plus, lorsqu'une isolation est souhaitée, elle est réalisée sous la couche d'étanchéité suivant la technique de la toiture chaude comme indiqué colonne 4 ligne 27 et suivantes du document.In US Pat. No. 4,521,478 issued June 4, 1985 to Mr. Hageman, it is proposed a sealing system composed of a first layer of bitumen, bitumen modified or tar on which is applied a polyester veil, then by a second layer of bitumen, modified bitumen or tar. The assembly is then protected by a layer of heat resistant product such as chippings, polyurethane foam or a putty in which are embedded granules. In this document, the sealing layer is always complex. It is made of bitumen and several passes which presents both an additional cost and increased risks of defects. Indeed, the hot bitumen must percolate through the polyester web to ensure the bonding of the bitumen layers between them which is possible only if the bitumen is sufficiently hot. In this document also, the projected polyurethane foam layer does not have an insulating function but a protective function of the sealing layer as can a layer of gravel. It is not in the spirit of the inventor to provide an insulating layer using the inverted insulation technique, but a protective layer of the seal against oxidation and the fact that it is made in one. single layer as shown in the diagrams, shows that it has a thickness of less than 2 cm which is notoriously insufficient to give it an insulating function. In addition, when an insulation is desired, it is carried out under the sealing layer according to the technique of the hot roof as indicated in column 4 line 27 and following of the document.
Au contraire, dans l'invention, la couche d'étanchéité est réalisée en résine et en une seule passe ce qui est plus rapide et évite les risques de malfaçons. De plus, il n'y a pas de voile en polyester pour renforcer l'étanchéité. Enfin, la couche en mousse de polyuréthane projetée est avant tout définie comme une couche isolante, ce qui pour l'homme de l'art, en plus de sa composition, le polyuréthane, impose des contraintes d'épaisseur et donc de mise en oeuvre en plusieurs passes. Le complexe proposé est donc un véritable complexe d'étanchéité et d'isolation, contrairement à ce qui est décrit dans le document de l'art antérieur.In contrast, in the invention, the sealing layer is made of resin and in a single pass which is faster and avoids the risk of defects. In addition, there is no polyester web to strengthen the seal. Finally, the projected polyurethane foam layer is primarily defined as an insulating layer, which for the skilled person, in addition to its composition, the polyurethane imposes thickness constraints and therefore implementation in several passes. The proposed complex is therefore a true sealing and insulation complex, contrary to what is described in the document of the prior art.
L'innovation, telle que revendiquée, est composée d'une couche étanche en résine adhérente au support et surmontée d'une isolation en mousse de polyuréthane projetée en plusieurs passes pour obtenir le coefficient d'isolation désiré.The innovation, as claimed, is composed of a waterproof layer of resin adherent to the support and surmounted by polyurethane foam insulation projected in several passes to obtain the desired insulation coefficient.
La description de l'invention faite ci-après à pour but d'illustrer une possibilité de réalisation de l'invention. Il est bien entendu que la présente description, n'est faite qu'à titre explicatif mais nullement limitatif et qu'on pourra y apporter toute modification utile, notamment dans le domaine des équivalences techniques sans sortir de son cadre. 95 Conformément à l'invention, la couche étanche est réalisée en résine. La résine utilisée peut être une résine bi-composant, sans solvant, à base de méthacrylate de méthyle (MMA) constituant une membrane adhérente au support, continue, élastomère 100 % réactive, uréthane modifiée. Elle est réalisée à partir d'un mélange de deux composants: Composant A et Composant B.The description of the invention given below is intended to illustrate an embodiment of the invention. It is understood that the present description is made for explanatory purposes but not limiting and that any useful modification can be made, especially in the field of technical equivalences without departing from its scope. According to the invention, the waterproof layer is made of resin. The resin used can be a bicomponent solvent-free resin based on methyl methacrylate (MMA) constituting a membrane adherent to the support, continuous, 100% reactive elastomer, modified urethane. It is made from a mixture of two components: Component A and Component B.
100 Avant leur utilisation, chacun des composants est mélangé séparément de façon à homogénéiser les composants. Ensuite, on rajoute un catalyseur à base de peroxyde dibenzoïque dans le composant B. La quantité de catalyseur est fonction de la température ambiante.Before use, each component is mixed separately to homogenize the components. Then, a catalyst based on dibenzoic peroxide in component B is added. The amount of catalyst is a function of the ambient temperature.
Préalablement à la mise en oeuvre de l'étanchéité, on prépare le support en lePrior to the implementation of the seal, the support is prepared by
105 nettoyant. On applique sur le support propre et débarrassé de poussière une couche d'accrochage composé d'une résine à 2 composants à base de méthyhnéthacrylate (MMA), de basse viscosité et incolore. Cette résine peut être additionnée d'un catalyseur à base de peroxyde dibenzoïque à raison de 1 à 6 % en poids en fonction de la température ambiante. La couche étanche est ensuite appliquée par projection à l'aide d'équipement105 cleaner. A primer layer consisting of a 2-component, methylene-methacrylate (MMA) resin of low viscosity and colorlessness is applied to the clean, dust-free support. This resin may be supplemented with a catalyst based on dibenzoic peroxide in a proportion of 1 to 6% by weight as a function of the ambient temperature. The waterproof layer is then spray applied using equipment
110 pneumatique haute pression, bi-composant à dosage volumétrique, (rapport 1/1) à air comprimé équipée d'un pistolet de projection de type "Airless". Les composants sont gardés en suspension par agitation. Le mélange des composants se fait en tête de pistolet. La pression de mise en oeuvre est comprise entre 100 et 150 bars (maximum 200/250 bars). La mise en oeuvre se fait en une seule passe avec un grammage compris entre 2 et 2,5 kg par m2 110 high pressure pneumatic, two-component volumetric dosing (ratio 1/1) with compressed air equipped with a spray gun type "Airless". The components are kept in suspension by stirring. The mixing of the components is done at the top of the gun. The operating pressure is between 100 and 150 bars (maximum 200/250 bars). The implementation is done in a single pass with a grammage of between 2 and 2.5 kg per m 2
115 correspondant à une épaisseur comprise entre 2 et 2,5 mm.115 corresponding to a thickness of between 2 and 2.5 mm.
L'isolation est réalisée en mousse de polyuréthane projetée. La mousse de polyuréthane est mise en oeuvre directement sur la couche étanche en résine sans préparation. Elle est obtenue par mélange de polyol et dïsocyanate en partie égale. Préalablement à leur utilisation, chacun des composants doit être homogénéisé. La mise en oeuvre est réalisée àThe insulation is made of projected polyurethane foam. The polyurethane foam is used directly on the resin-tight layer without preparation. It is obtained by mixing polyol and isocyanate in part equal. Prior to their use, each of the components must be homogenized. The implementation is carried out
120 partir d'une unité mobile de projection. Cette unité dispose de son énergie (électricité et air comprimé). Elle est constituée de deux pompes de gavage, d'une machine doseuse haute pression à chauffage et pression régulée, de tuyaux chauffants permettant de maintenir le produit à 6O0C - 65 0C jusqu'au pistolet. Le pistolet est un pistolet Airless deux composants avec rapport de mélange fixe. Les pressions de mélange sont comprises entre 70 et 120 bars.120 from a mobile projection unit. This unit has its energy (electricity and compressed air). It consists of two booster pumps, a high-pressure metering machine with controlled heating and pressure, and heating tubes to hold the product at 60 ° C - 65 ° C up to the gun. The gun is a two component Airless gun with fixed mixing ratio. The mixing pressures are between 70 and 120 bar.
125 Avant chaque phase d'application, il est procédé à un essai de projection consistant à projeter le nombre de couches prévues sur une couche de papier afin d'apprécier l'épaisseur, le dessin de projection, la densité de la mousse, sa structure et sa dureté. Toute zone commencée doit être terminée sans interruption sur l'épaisseur totale prévue hormis dans la zone de reprise. La surface de la toiture doit être divisée en zones 130 élémentaires correspondant à la capacité de projection en tenant compte des conditions atmosphériques. La projection commence, pour la première passe, par les reliefs et points singuliers, tels que ventilations, sorties diverses, etc.... Les passes successives dans ces zones sont à associer avec celles des parties courantes afin de réaliser un complexe homogène. Le nombre de passes sur les reliefs est de 2 pour une épaisseur minimale de 2 cm sur la hauteur 135 du relevé. La première passe de projection en partie courante doit être raccordée avec la première passe des relevés traités au préalable. Les passes suivantes sont décalées ou croisées de manière à lisser l'aspect final de la mousse de polyuréthane projetée. Le nombre de passe varie en fonction de l'épaisseur finale désirée. L'épaisseur de mise en oeuvre de chaque couche est comprise entre 1 et 2 cm. La largeur des passes est de 1,50 m environ. Le recouvrement 140 latéral est de l'ordre de 30 cm. Le recouvrement entre deux passes successives doit se faire à 5 minutes d'intervalle environ.On veillera à ce que le pistolet reste perpendiculaire à la surface de projection en évitant les balayages. La distance à la surface de projection doit être de 80 cm environ. Les zones de reprise comporte un décalage de 30 cm environ entre couches. Lors de la projection de reprise, la mousse servant de support doit être sèche et propre. On évitera de 145 démarrer sur une zone de reprise tôt dans la matinée à cause du risque de condensation.Before each application phase, a projection test is carried out consisting of projecting the number of layers provided on a layer of paper in order to assess the thickness, the projection pattern, the density of the foam, and its structure. and its hardness. Any area started must be terminated continuously over the total expected thickness except in the area of recovery. The surface of the roof must be divided into elementary zones 130 corresponding to the projection capacity taking into account the atmospheric conditions. The projection begins, for the first pass, by the reliefs and singular points, such as breakdowns, various outputs, etc. The successive passes in these areas are to be associated with those of the current parts to achieve a homogeneous complex. The number of passes on the reliefs is 2 for a minimum thickness of 2 cm on the height 135 of the survey. The first projection pass in the current section must be connected with the first pass of the readings previously processed. The following passes are shifted or crossed so as to smooth the final appearance of the projected polyurethane foam. The number of passes varies depending on the desired final thickness. The implementation thickness of each layer is between 1 and 2 cm. The width of the passes is about 1.50 m. The lateral cover 140 is of the order of 30 cm. The overlap between two successive passes should be done about 5 minutes apart.We will ensure that the gun remains perpendicular to the projection surface by avoiding sweeps. The distance to the projection surface must be approximately 80 cm. The areas of recovery has an offset of about 30 cm between layers. When reworking, the supporting foam must be dry and clean. Avoid starting on a recovery zone early in the morning because of the risk of condensation.
Le complexe peut être complété par une protection anti UV à base de peinture acrylique. La mise en oeuvre de la peinture doit se faire au moins deux heures après la fin de la projection de la mousse PROJITHANE. La peinture est mise en oeuvre au pistolet Airless ou de façon manuelle au rouleau à raison de 500 g/m2soit une épaisseur d'environ 500 μ. 150 Cette description n'a été faite que pour illustrer une manière de réaliser l'invention. La présente invention a pour objet de définir un système d'étanchéité et d'isolation inversée utilisable sur les toitures de bâtiments.The complex can be completed with UV protection based on acrylic paint. The painting must be put in place at least two hours after the end of the projection of the PROJITHANE foam. The paint is carried out with an Airless spray gun or manually with a roller at a rate of 500 g / m 2, ie a thickness of approximately 500 μ. This description has been made only to illustrate one way of carrying out the invention. The present invention aims to define a system of waterproofing and inverted insulation used on the roofs of buildings.
Conformément à l'invention, le système est à destination des toitures de bâtiments et comporte une couche d'étanchéité surmonté d'une couche de mousse de polyuréthane 155 projetée selon un première caractéristique la couche étanche est une couche en résine surmontée d'une couche en mousse polyuréthanne projetée assurant l'isolation du bâtiment.According to the invention, the system is intended for building roofs and comprises a sealing layer surmounted by a layer of polyurethane foam 155 projected according to a first feature the waterproof layer is a resin layer surmounted by a layer made of polyurethane foam designed to insulate the building.
Selon une deuxième caractéristique, la mise en oeuvre du procédé se fait sur un élément porteur en maçonnerie ou en dalles en béton cellulaire autoclave armé ou en bois ou en panneaux dérivés du bois ou encore en tôles d'acier nervurées. 160 Selon une troisième caractéristique, la couche isolante en mousse de polyuréthanne projetée est mise en oeuvre en adhérence directement sur la couche étanche. Selon une quatrième caractéristique, la mise en oeuvre de la couche isolante en mousse de polyuréthanne projetée se fait en plusieurs passes et au minimum deux.According to a second characteristic, the implementation of the method is carried out on a load bearing element made of masonry or slabs of reinforced autoclave cellular concrete or of wood or panels derived from wood or of ribbed steel sheets. According to a third characteristic, the insulating layer of projected polyurethane foam is applied in adhesion directly to the waterproof layer. According to a fourth characteristic, the implementation of the insulating layer of projected polyurethane foam is in several passes and at least two.
Selon une cinquième caractéristique, le procédé est complété en surface par une 165 protection contre les UV.According to a fifth characteristic, the process is supplemented at the surface by a UV protection.
Selon une sixième caractéristique, la couche d'étanchéité en résine est adhérente à l'élément porteur. According to a sixth characteristic, the resin sealing layer is adherent to the carrier element.

Claims

RBVENDICATIONSRBVENDICATIONS
1) Procédé de réalisation d'un système d'étanchéité pour les toitures de bâtiments comportant une couche d'étanchéité et une couche de mousse de polyuréthane projetée caractérisé en ce que la couche étanche est une couche en résine et que ledit système d'étanchéité est également un système d'isolation, la couche en mousse polyuréthanne projetée étant également une couche isolante.1) Process for producing a waterproofing system for building roofs comprising a sealing layer and a projected polyurethane foam layer, characterized in that the waterproof layer is a resin layer and said sealing system is also an insulation system, the projected polyurethane foam layer is also an insulating layer.
2) Procédé de réalisation d'un système d'étanchéité et d'isolation selon la revendication 1, caractérisé en ce que la mise en oeuvre se fait sur un élément porteur en maçonnerie ou en dalles en béton cellulaire autoclave armé ou en bois ou en panneaux dérivés du bois ou encore en tôles d'acier nervurées. 3 ) Procédé de réalisation d'un système d'étanchéité et d'isolation selon l'une quelconque des revendications précédentes, caractérisé par le fait que la couche isolante en mousse de polyuréthanne projetée est mise en oeuvre en adhérence directement sur la couche étanche.2) A method of producing a sealing and insulating system according to claim 1, characterized in that the implementation is carried out on a carrier element made of masonry or slabs reinforced autoclave reinforced concrete concrete or wood or panels derived from wood or ribbed steel sheets. 3) A method of producing a sealing and insulating system according to any one of the preceding claims, characterized in that the insulating layer of projected polyurethane foam is carried out adhesively directly on the sealing layer.
4) Procédé de réalisation d'un système d'étanchéité et d'isolation selon l'une quelconque des revendications précédentes, caractérisé par le fait que la mise en oeuvre de la couche isolante en mousse de polyuréthanne projetée se fait en plusieurs passes.4) Process for producing a sealing and insulating system according to any one of the preceding claims, characterized in that the implementation of the insulating layer of projected polyurethane foam is in several passes.
5) Procédé de réalisation d'un système d'étanchéité et d'isolation selon l'une quelconque des revendications précédentes, caractérisé par le fait que le système d'isolation et d'étanchéité est complété en surface par une protection contre les UV. 6 ) Procédé de réalisation d'un système d'étanchéité et d'isolation selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche étanche en résine est adhérente à l'élément porteur. 5) Process for producing a sealing and insulating system according to any one of the preceding claims, characterized in that the insulation and sealing system is completed at the surface with a UV protection. 6) A method of producing a sealing system and insulation according to any one of the preceding claims, characterized in that the waterproof layer of resin is adherent to the carrier member.
PCT/FR2006/002334 2005-10-21 2006-10-18 System for sealing and insulating building roofs WO2007045760A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0510779A FR2892437A1 (en) 2005-10-21 2005-10-21 SYSTEM FOR SEALING AND INSULATING ROOFING ROOFS
FR0510779 2005-10-21

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WO2007045760A1 true WO2007045760A1 (en) 2007-04-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346044B (en) * 1977-05-24 1978-10-25 Reck Hans Peter PROCESS FOR THERMAL INSULATION OF A FLAT ROOF MADE OF TRAPEZOIDAL SHEET
FR2529241A1 (en) * 1982-06-29 1983-12-30 Smac Acieroid Reinforced expanded polyurethane coating - for fragile corrugated roofs panels gives safe installation and maintenance
US4521478A (en) * 1984-08-20 1985-06-04 Hageman John P In situ roofing composite and method
WO1998020982A1 (en) * 1996-11-14 1998-05-22 Hunter John P Jr Spray applicator for roofing and other surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346044B (en) * 1977-05-24 1978-10-25 Reck Hans Peter PROCESS FOR THERMAL INSULATION OF A FLAT ROOF MADE OF TRAPEZOIDAL SHEET
FR2529241A1 (en) * 1982-06-29 1983-12-30 Smac Acieroid Reinforced expanded polyurethane coating - for fragile corrugated roofs panels gives safe installation and maintenance
US4521478A (en) * 1984-08-20 1985-06-04 Hageman John P In situ roofing composite and method
WO1998020982A1 (en) * 1996-11-14 1998-05-22 Hunter John P Jr Spray applicator for roofing and other surfaces

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