EP3559371B1 - Method for making a tiled floor - Google Patents

Description

The present invention relates to a method of manufacturing a tiled floor on a support to be covered.

It is obligatory due to the standards in force in new construction or in the rehabilitation of old housing to provide acoustic insulation solutions to reduce the transmission of impact noise through the ground. There are many solutions available today to meet these standardized requirements.

Traditionally, acoustic insulation systems under tiles consist of several elements applied successively to the support to be covered. A ready-to-use glue is generally applied which allows the insulation system to adhere to the support. It is necessary for the insulation system to provide acoustic attenuation and mechanical resistance. A layer of adhesive mortar is then applied to the upper part of the insulation system and is intended for bonding the tiles. Unlike under-screed acoustic systems, in under-tile systems there is no need to install a screed, the thickness of which is generally greater than 25 mm, and the tiles are an integral part of the operation and performance of the system. .

Currently, two different types of under-tiled sound insulation systems exist. The first system is made up of rigid plates which provide both acoustic attenuation and mechanical resistance. These plates generally come in the form of a rectangle of approximately 0.5 ^m2 and are ready to be directly tiled. The plates or slabs are positioned one after the other so as to cover the entire surface to be covered. Depending on the size of the part to be insulated, the necessary number of these plates may be large, and it may be necessary to cut them, hence an implementation which can be long and tedious for the operator. Most often, jointing strips are positioned between each plate so as to minimize the spaces which could appear between the different plates. These connections between the plates, which are therefore numerous, represent points of mechanical and, potentially, acoustic weakness. The advantage of this system is that it can lay the tiles directly on the acoustic insulation. However, it remains of limited use for large areas to be insulated.

The second system consists of a deformable mattress, preferably in the form of a roll, and providing acoustic attenuation properties. Mechanical resistance is then provided by applying a mini-screed (sometimes called an interposition or leveling layer) on which the tiling will then be placed. Classically, this mini-screed has a thickness of less than 10 mm. The application of the mattress makes it possible to cover a larger surface area with a single roller and in particular saves time for the installer compared to systems in which a large number of plates must be placed next to each other and possibly cut them out. However, with this type of system, it is necessary to prepare the mini-screed on site, in particular by mixing a mortar composition stored in powder form. This operation generates a significant amount of waste, can lead to the generation of dust when handling powder bags and requires significant water consumption. In addition, due to the fresh consistency of the mini-screed, more fluid than that of a tile adhesive, it is essential to provide means of joining between the different roll strips applied to the floor. From the applicator's point of view, the manufacture of the mini-screed remains difficult work which requires, in addition to preparation time (provision of thickness indicators and preparation of the composition of the mixed mortar) and application, a drying time of at least several hours before being able to continue laying the tiles constitutes a waste of time for him.

WO 2016/061346 A1 describes a method of manufacturing a tiled floor on a support to be coated which comprises steps a), b), d) and e) of claim 1 below.

We are therefore seeking to find solutions to facilitate installation and also to reduce waiting times between the different stages for tilers. It is within this framework that this invention which proposes a process which ensures acoustic insulation, and which results from a system which can be positioned directly and easily under the tiles, without requiring the installation of any mini-screed. This system saves time when installing the system itself and therefore significantly shortens the total duration of construction sites requiring the implementation of acoustic systems with a glued tiled finish.

One of the objects of the present invention is a method which uses an acoustic insulation system in the form of a roll intended to be positioned on a support and directly under tiles. Acoustic reduction and mechanical resistance are provided by a single roll-up system, therefore easy to apply to the support to be covered and which allows a large surface area to be covered. This system consists of an insulating part comprising at least one flexible underlay providing acoustic insulation and at least one other underlay providing mechanical resistance positioned facing the tiles, the two underlays being integral with each other.

The insulation system used in the method according to the present invention makes it possible to obtain acoustic attenuation equivalent to the systems currently on the market. The value of the impact sound attenuation index ΔLw, which makes it possible to characterize the impact sound insulation performance of floor systems, is between 15 and 20 dB (ISO 10140-3 standard). When we talk about a system positioned directly under the tiling, we understand that no screed or other system providing mechanical resistance is placed between the insulation system used in the process according to the present invention and the tiling. However, a layer of tile adhesive necessary to fix the tiles is applied between the insulating system and the tiles. The mechanical resistance of the insulation system is in particular tested on complete systems, that is to say on systems comprising the insulation system used in the process according to the present invention on which a layer of adhesive has been applied. tiling then the tiles, by measurements of resistance to punching of the tiles.

The flexible underlayer is made up of at least one fibrous material of mineral or synthetic origin, of the glass fiber and/or carbon fiber type. polyester or synthetic cellular layer type such as polyethylene or polyurethane. It is preferably made of a heat-bonded carded synthetic non-woven fabric, needle-punched or non-needled. It can also be a mineral nonwoven obtained by melting. It can also be a cellular material such as a synthetic foam, of the polyurethane foam type. For example, the flexible underlay is a needle-punched nonwoven made from polyester fibers, or a nonwoven made from glass fibers. The flexible underlay may comprise several layers arranged one on top of the other and assembled together. For example, each of the faces of the flexible underlay can be covered with a film, for example a sheet of polyethylene, directly glued to the nonwoven. These films are particularly present when the underlay is a non-woven glass fiber, in order to prevent the handler from being in contact with the glass fibers. This underlay, even composed of several underlays, remains sufficiently flexible and therefore does not hinder the rollability of the complete system comprising the underlay providing mechanical resistance.

The underlay providing the mechanical resistance integral with the flexible underlay is the one positioned opposite the tiles. Two types of underlay providing the mechanical resistance necessary for the direct application of the tile according to the standards currently in force can be used in the system used in the method according to the present invention.

According to a first embodiment, the underlay providing mechanical resistance is an underlay based on agglomerated fibers such as plant fibers of the wood or hemp type, mineral fibers of the rock wool type, or based on material synthetic composite such as synthetic fibers or synthetic resin, or based on a mixture of fibers and resin, with a thickness preferably between 2 and 8 mm. This underlay is therefore considered thick and relatively rigid, which makes it necessary for it to be adapted to be easily rolled up. It is pre-cut in the form of strips a few centimeters wide, typically with a width of between 2 and 5 cm. The depth of the cut is less than the total thickness of the underlay. This cut provides sufficient flexibility so that the entire insulating system formed by the flexible underlay and the underlay more rigid providing mechanical resistance or rollable. The width of the slats plays a role in particular on the final thickness of the roll: the thinner the slats are, the more it is possible to have a compact and therefore less bulky roll. This underlay can be based on composite material in the sense that at least one of the materials constituting it and cited above is taken from an organic resin or from a mineral binder such as cement, gypsum or from a mortar. It can, for example, be made from needled synthetic fibers caught in a resin.

According to a second embodiment, the underlay providing mechanical resistance is a flexible and thin underlay with a thickness of less than 4 mm. It can therefore be rolled up easily without additional operations, such as pre-cuts which become necessary if the underlay is more rigid. It can be a reinforcing veil, a reinforcing grid, in particular a glass grid. For example, the rigid underlay can be a glass mesh reinforcement whose mesh size is 9x9 mm.

The two sub-layers constituting the insulation system used in the process according to the present invention, that is to say the flexible sub-layer and the sub-layer providing mechanical resistance, are joined together during the process of manufacture of the system used in the process according to the present invention, for example by bonding by thermal input and/or using an adhesive. The way of making these two sub-layers united is adapted depending on the type of material of each of the layers.

The rollable acoustic insulation system used in the method according to the present invention can also make it possible to achieve sealing, particularly if the system is intended to protect supports sensitive to water. It can thus include, in addition to the two sub-layers constituting it, a means ensuring waterproofing which constitutes an additional sub-layer (also called "watertight sub-layer"). The sealing means or waterproof underlay is necessarily positioned above the flexible underlay providing acoustic insulation. It can be positioned between the flexible underlay and the underlay providing mechanical resistance, particularly when the latter is a veil or reinforcing grid. It can also be positioned above the underlay providing mechanical resistance, therefore just below the tiles. This means for ensuring sealing can be a sheet of synthetic material, for example polyethylene, preferably with a thickness of less than 2 mm, or even less than 1 mm. The waterproof underlay is coupled with the acoustic insulating part. Thus, it is an integral part of the acoustic insulation system in roll form and is one of the underlays of this system. It is flexible enough not to hinder the winding of the entire system. The system used in the method according to the present invention can therefore be a rollable waterproof acoustic insulation system, which has the particular advantage of minimizing the joint areas to be treated after installation since it becomes possible to cover large surfaces with a single roll of the insulating and waterproof system.

The acoustic insulation system used in the process according to the invention is therefore in the form of a roll making it possible to cover a surface varying between 10 and 60 m ² . These rolls are easily stored. Once manufactured, they are protected in packaging. Once on site, the applicator simply removes the packaging and unrolls the roller onto the surface to be tiled. The time saving is considerable for him, since it becomes possible to cover more than 10 m ² without needing to handle a large number of sheets or apply a mini-screed.

1. a. application d'une colle prête à l'emploi sur le support
2. b. positionnement par déroulement et collage les uns à côté des autres, sans espacement sur ledit support, de plusieurs lés du système isolant acoustique constitué d'une partie isolante comprenant au moins une sous-couche souple apportant l'isolation acoustique et au moins une autre sous-couche apportant la résistance mécanique, les deux sous-couches étant solidaires entre elles;
3. c. positionnement de moyens de désolidarisation sur le périmètre et au niveau de tous les points singuliers émergeant du support à revêtir, notamment les bordures le long des murs, les angles de pièces, les tuyaux de canalisation, ou les endroits où les lés ne sont pas parfaitement juxtaposés,
4. d. application d'une colle à carrelage directement sur la sous-couche supérieure du système isolant acoustique et
5. e. pose des carreaux.

The present invention relates to a method of manufacturing a tiled floor on a support to be covered, characterized in that it comprises the following steps:

1. has. application of a ready-to-use glue to the support
2. b. positioning by unrolling and gluing next to each other, without spacing on said support, of several strips of the acoustic insulating system consisting of an insulating part comprising at least one flexible underlay providing acoustic insulation and at least one other underlay -layer providing mechanical resistance, the two underlayers being integral with each other;
3. vs. positioning of uncoupling means on the perimeter and at all the singular points emerging from the support to be covered, in particular the edges along the walls, the corners of rooms, the pipes, or the places where the strips are not perfectly juxtaposed,
4. d. application of tile adhesive directly to the upper underlay of the acoustic insulation system and
5. e. laying tiles.

This method of manufacturing a tiled floor on a support to be covered makes it possible to obtain an impact sound insulation assembly comprising the floor, the acoustic insulation system in the form of a roll and the covering in the form of tiles.

The top underlay of the system is the one furthest from the support. The upper underlay is the underlay providing mechanical resistance or, when a means ensuring the waterproofing of the system is present, this can be the waterproof underlay if the sealing means is positioned on the underlay providing mechanical resistance.

Several rollers of the system used in the process according to the present invention are unrolled and positioned next to each other, so as to cover the entire support to be coated.

The strips are laid so as not to leave any spacing between them to limit any risk of lack of sound insulation or waterproofing when the system includes an underlay ensuring waterproofing. As in any floating acoustic system, the step of positioning the insulating layer must be followed by a step consisting of positioning a means of separation around the perimeter of the room and at all the singular points emerging from the surface to be covered (column, pipe, etc.) in order to avoid acoustic bridges. These means of separation comprise at least one rod made of resilient materials, preferably made of flexible, plastic materials. Indeed, the separation means can include a single strip extending over the entire perimeter of the part to be covered or several strips are placed end to end to extend over the entire perimeter of the part to be covered. Such a rod is formed of two strips perpendicular to each other and made of materials to obtain a rod of L-shaped section. This rod of L-shaped section makes it possible to have a strip, parallel to the plane of the ground, which comes in contact with the acoustic insulation system, that is to say the assembly formed by at least one flexible underlay providing acoustic insulation and at least one other underlay providing mechanical resistance. The other strip of the strip, the one which is orthogonal to the plane of the ground, comes into contact with the wall or low wall or element delimiting the room to be covered. We therefore understand that this rod acts as a buffer, joint between the layers applied to the acoustic insulating system (the glue and the covering) and the wall delimiting the room to be covered. However, the rod forming the uncoupling means is not limited to a rod having an L shape. Indeed, this rod may only comprise a single strip arranged orthogonally to the plane of the ground and placed between the layers applied to the acoustic insulation system and the wall delimiting the room to be covered.

The step of positioning the strips can optionally be followed by a step consisting of positioning a joining means at the level of the contiguous part of two strips positioned consecutively on the support, after step c). The joining means is only necessary if it is necessary to deal with too large a spacing between the strips (unlike a conventional system, this type of application defect is very advantageously reduced by the rollability of the underlay), or if the system contains a waterproofing layer. Generally speaking, when it is necessary to have a waterproof system, all the singular points of the surface to be covered are treated before the tiling stage. Singular points include borders along walls, corners of rooms, pipes, or places where the strips are not perfectly juxtaposed. The joining means can be a strip that the tiler sticks to all the joining parts. If the connection is made for the sole purpose of ensuring waterproofing, then it can also be a sealing liquid or putty that the tiler applies to the joining parts between the different lengths. It is then necessary to allow time for the jointing medium to dry before being able to apply the tile adhesive.

If the acoustic insulation system used in the method according to the present invention does not include a waterproof underlay integrated directly into the system, it remains possible to dissociate the acoustic insulation from the waterproofing. Usual independent sealing systems can then be installed on the acoustic insulating system used in the process according to the invention and before laying the tiling.

After the step of positioning the strips and any means of joining between adjacent strips, the method according to the invention comprises a step of applying a tile adhesive then laying the tiles. The thickness of glue applied is between 0.5 to 5 mm depending on the tool specified with the system (notched or half-moon comb, etc.). The use of the acoustic insulation system used in the process according to the present invention, which provides sufficient rigidity, advantageously makes it possible to avoid having to apply a mini-screed. Depending on the acoustic system chosen, the use of certain specific glues may be recommended by the manufacturer.

Step e) of the method according to the invention is the step of laying the tiles, which is carried out in the usual way by the tiler. After a drying time of approximately 24 hours, a grout is applied between the tiles.

• La figure 1 représente une vue en coupe d'un sol revêtu de carreaux positionnés sur le système d'isolation acoustique utilisé dans le procédé selon la présente invention dans lequel la sous-couche apportant la rigidité mécanique est prédécoupée sous forme de lamelles
• La figure 2 représente une vue d'un rouleau du système acoustique utilisé sur la vue représentée figure 1.
• La figure 3 représente une vue en coupe d'un sol revêtu de carreaux positionnés sur le système d'isolation acoustique utilisé dans le procédé selon la présente invention dans lequel la sous-couche apportant la rigidité mécanique est une couche souple et fine.
• Les figures 4 et 4' sont des vues de dessus du système d'isolation utilisé sur la vue représentée sur la figure 3. La figure 4' représente deux lés mis côte à côte.
• La figure 5 représente une vue d'un rouleau du système acoustique représenté aux figures 3 et 4.
• Les figures 6a, 6b, 7 et 8 sont des vues des moyens de désolidarisation seuls et agencés dans un ensemble formé d'un sol revêtu de carreaux positionnés sur le système d'isolation acoustique utilisé dans le procédé selon la présente invention.

Other advantageous details are described below with reference to the figures illustrating the invention:

• There figure 1 represents a sectional view of a floor covered with tiles positioned on the acoustic insulation system used in the method according to the present invention in which the underlay providing mechanical rigidity is pre-cut in the form of strips
• There figure 2 represents a view of a roll of the acoustic system used in the view shown figure 1 .
• There Figure 3 represents a sectional view of a floor covered with tiles positioned on the acoustic insulation system used in the method according to the present invention in which the underlayer providing mechanical rigidity is a layer supple and fine.
• THE figures 4 And 4' are top views of the insulation system used in the view shown on the Figure 3 . There figure 4' represents two strips placed side by side.
• There figure 5 represents a view of a roll of the acoustic system shown in figures 3 and 4 .
• THE figures 6a, 6b, 7 and 8 are views of the uncoupling means alone and arranged in an assembly formed by a floor covered with tiles positioned on the acoustic insulation system used in the method according to the present invention.

The sectional view shown on the figure 1 shows a floor (1) covered with tiles (4) placed directly on an acoustic insulation system used in the method according to the present invention, once unrolled and placed on the support to be covered (5). This system consists of a flexible underlayer providing insulating acoustic insulation (2a) coupled with an underlayer (2b-1) providing mechanical resistance. The sublayer (2b-1) represented on the figure 1 is pre-cut by notches (3) arranged at regular intervals over its entire surface. The notches (3) thus allow the insulation system shown on the figure 2 to be able to roll up in the form of strips. The sound insulation system shown on the figure 2 comprises the two sub-layers (2a) and (2b-1) associated with each other. The roll is presented in such a way that when the operator unrolls it, the flexible underlayer (2a) providing acoustic insulation is the one facing the support to be covered. The fixing of the acoustic insulation system used in the process according to the present invention on the support to be insulated is carried out for example by means of an acrylic C1 or vinyl glue applied to the support before unrolling the insulation system used in the process according to the present invention. The underlayer (2b-1) providing mechanical resistance is, on the figure 1 , the layer furthest from the support and therefore the one to which the C2 tile adhesive will be applied then the tiles (4). The tiles are positioned next to each other, leaving a space between each which will be filled with a jointing mortar during the last stage of the tiled floor manufacturing process.

There Figure 3 is a sectional view of a tiled floor positioned on the acoustic insulation system used in the method according to the present invention in which the underlayer providing mechanical rigidity (2b-2) is a flexible and thin layer, for example of the reinforcing web or reinforcing grid type. As on the figure 1 , the tiles (4) are positioned directly on the underlay providing mechanical resistance (2b-2). The flexible underlayer is the one which is in contact and which is glued to the support (5) to be covered.

There figure 4 is a top view of the insulating system used in the method according to the present invention according to the embodiment in which the sub-layer (2b-2) providing mechanical resistance is a reinforcing grid, positioned above the sub-layer (2b-2) flexible layer (2a) providing acoustic insulation. There figure 4' shows two strips of the insulation system used in the method according to the present invention as shown in the Figure 4 . The two strips are positioned side by side over the entire length (6). A separation strip, not shown in the figure, can be positioned along the length (6) to make the two strips united and limit acoustic bridges.

There Figure 5 is a representation of a roll of the acoustic insulation system used in the method according to the present invention shown on the figures 4 And 4' . The flexible underlay (2a) providing acoustic insulation is the one which is directly positioned and stuck against the support to be covered when the operator unrolls the roll.

• sous-couche acoustique isolante weber.sys impact qui se présente sous forme de plaques de 8 mm d'épaisseur assurant à la fois l'isolation acoustique et la résistance mécanique puisque le carrelage peut être directement posé dessus. L'indice acoustique de ce système est de ΔLw=20 dB (norme ISO 10140-3).
• le système Lankophonic Plak vendu par la société Parexlanko qui est une plaque rigide d'environ 8 mm d'épaisseur sur laquelle on pose une trame supplémentaire avant de poser le carrelage a un indice d'affaiblissement acoustique de ΔLw=18 dB (norme ISO 10140-3).
• le système Kit Mapefonic commercialisé par la société Mapei se présente sous la forme d'un rouleau acoustique collé sur le support à isoler, sur lequel on applique une mini-chape et dont les performances annoncées donnent un indice d'affaiblissement de ΔLw=19 dB (norme ISO 10140-3).

The acoustic performances are evaluated for different insulation systems used in the method according to the present invention. The value of the impact sound attenuation index ΔLw makes it possible in particular to characterize the impact sound insulation performance of floor systems (EN ISO 10140-3 and 717-2). Thus, the so-called under-tile acoustic systems traditionally installed in this type of work have a ΔLw index of between 15 and 20 dB, or even up to 22 dB in the case of greater thicknesses of the system. As comparative examples, we can cite the following systems existing on the market:

• weber.sys impact insulating acoustic underlay which comes in the form of 8 mm thick plates ensuring both acoustic insulation and mechanical resistance since the tiling can be directly laid above. The acoustic index of this system is ΔLw=20 dB (ISO 10140-3 standard).
• the Lankophonic Plak system sold by the company Parexlanko which is a rigid plate approximately 8 mm thick on which an additional frame is placed before laying the tiling has an acoustic reduction index of ΔLw=18 dB (ISO 10140 standard -3).
• the Mapefonic Kit system marketed by the Mapei company is in the form of an acoustic roll glued to the support to be insulated, on which a mini-screed is applied and whose advertised performance gives an attenuation index of ΔLw=19 dB (ISO 10140-3 standard).

Carrying out the standardized measurement for characterizing the attenuation index ΔLw is cumbersome and expensive. As a result, it is reserved for limited use, mainly when marketing an acoustic system. Consequently, techniques allowing the calibration of acoustic performances more suited to a screening process on a large number of systems could be implemented and validated by the acoustic community. The coupling of a calibration technique and a few corresponding standardized measurements makes it possible to rigorously and inexpensively classify the performances of a large number of systems in a relative manner while finding out what their absolute performance levels would be. .

One of these comparative calibration techniques consists of characterizing the energy radiation of concrete support slabs treated by the soil systems to be characterized. Comparing the treated slab with the reference concrete support slab makes it possible to relatively evaluate the impact sound insulation gain ∂L in dB and therefore to classify the systems studied according to their performance. In fact, samples with dimensions of around 500 x 500 mm are suspended in a free-free condition (that is to say suspended with tensioners or on a system of springs) and instrumented on the rear face with a sufficient number of accelerometers. Impact hammer strikes are made on the front face of the sample. The radiated powers are collected by the accelerometers. Post-processing of the measurements consisting of performing the energy sum on the third-octave frequency bands 100 Hz to 3150 Hz makes it possible to calculate the relative insulation gain ∂L in dB of the treated slabs in relation to the support slab and consequently the classification of the different systems. Tests carried out according to the comparative calibration method described above on reference systems for which the insulation values according to the standardized method (carried out by an external certification body) are available, have made it possible to establish a clear link between the classification of said systems according to the relative scale in ∂L and the absolute scale in ΔLw.

Comparative calibration tests were also carried out on systems used in the method according to the present invention once covered with tiles.

The reference system (Ref system) is a system in the form of a plate, marketed under the reference weber.sys impact, which comprises an insulating layer whose flexible part is based on polyester fibers and the rigid part is a needled with synthetic fibers impregnated with resin.

• le premier système testé (système 1) comprend une sous-couche isolante d'environ 4 mm d'épaisseur à base de fibres de polyester aiguilleté et une sous-couche rigide de 3 mm d'épaisseur qui est un aiguilleté de fibres synthétiques imprégnées de résine et prédécoupée sous forme de lamelles.
• le deuxième système testé (système 2) comprend une sous-couche isolante d'environ 4 mm d'épaisseur à base de fibres de polyester aiguilleté et une sous-couche rigide de 3 mm d'épaisseur qui est un aiguilleté de fibres synthétiques imprégnées de résine et prédécoupée sous forme de lamelles sur lequel on a positionné une sous-couche étanche du type weber.sys étanche au-dessus de la sous-couche rigide.
• le troisième système testé (système 3) comprend une sous-couche isolante souple qui est un voile de verre non tissé d'environ 5 mm d'épaisseur et de grammage 300 g/m². La sous-couche apportant la rigidité est identique à celle des systèmes 1 et 2 (aiguilleté de fibres synthétiques imprégnées de résine, prédécoupé sous forme de lamelles, d'une épaisseur de 3 mm). Une sous-couche étanche du type weber.sys étanche est positionnée au-dessus de la sous-couche rigide.

• le quatrième système testé (système 4) comprend la même sous couche isolante souple que celle du système 3 (un voile de verre non tissé d'environ 5 mm d'épaisseur et de grammage 300 g/m²), associée à une sous-couche apportant la rigidité qui est une grille de verre de 1 mm d'épaisseur dont les mailles ont une dimension 9x9 mm.
• le cinquième système testé (système 5) est identique au système 4 et comprend en sus une sous-couche étanche du type weber.sys étanche positionnée sous la sous-couche apportant la rigidité.

The roll systems which do not require the application of a mini-screed, therefore conforming to the present invention, which have been tested are the following:

• the first system tested (system 1) includes an insulating underlay of approximately 4 mm thick based on needle-punched polyester fibers and a rigid under-layer of 3 mm thick which is a needled of synthetic fibers impregnated with resin and pre-cut in the form of strips.
• the second system tested (system 2) includes an insulating underlay of approximately 4 mm thick based on needle-punched polyester fibers and a rigid under-layer of 3 mm thick which is a needled of synthetic fibers impregnated with resin and pre-cut in the form of strips on which a waterproof weber.sys type waterproof underlay has been positioned above the rigid underlay.
• the third system tested (system 3) includes a flexible insulating underlayer which is a non-woven glass veil approximately 5 mm thick and weighing 300 g/m ² . The underlay providing rigidity is identical to that of systems 1 and 2 (needle punched with synthetic fibers impregnated with resin, pre-cut in the form of strips, 3 mm thick). A waterproof underlay of the waterproof weber.sys type is positioned above the rigid underlay.

• the fourth system tested (system 4) includes the same flexible insulating underlayer as that of system 3 (a non-woven glass veil approximately 5 mm thick and weighing 300 g/m ² ), associated with an underlay layer providing rigidity which is a 1 mm thick glass grid whose meshes have a dimension of 9x9 mm.
• the fifth system tested (system 5) is identical to system 4 and additionally includes a waterproof weber.sys type waterproof underlay positioned under the underlay providing rigidity.

The results recorded in Table 1 below clearly show that the acoustic performances of the acoustic system in roll used in the method according to the present invention are at least equivalent to the performances of the acoustic system in the form of plates and similar to those of the systems acoustics currently used on the market for the traditional creation of this type of work with acoustic and waterproof properties. Table 1 Relative improvement in impact sound insulation according to comparative calibration method in dB Reference ∂L _ref System 1 ∂L _ref +2 System 2 ∂L _ref +4 System 3 ∂L _ref + 10 System 4 ∂L _ref +9 System 5 ∂L _ref +8

Punching resistance tests were carried out on a system used in the process according to the present invention. These tests are carried out for complete systems in the sense that they are carried out once the tiling has been laid. They consist of evaluating the behavior of a floor covering subjected to sinking. These tests, necessary to obtain the technical opinion of the CSTB (Scientific and Technical Building Center), consist of imposing a movement of 1 mm/min on a cylindrical punch positioned 3 cm from a corner of a tile. The device makes it possible to trace the force/deformation curve and the force values reached during the first incident visible on the curve and/or on the sample tested are recorded, as well as the breaking force. Measurements were taken 16 hours after laying the tiling on system 4 for which the rigid layer is a glass veil in plates. The value of the breaking force for system 4 used in the process according to the present invention is 1 kN, which complies with the CSTB requirement.

To figures 6a, 6b, 7 and 8 , the uncoupling means arranged around the perimeter of the part and at all the singular points emerging from the surface to be covered are represented. These uncoupling means comprise at least one rod 6 made of resilient materials, preferably made of flexible, plastic materials. Indeed, the separation means can include a single strip extending over the entire perimeter of the part to be covered or several strips are placed end to end to extend over the entire perimeter of the part to be covered. Such a rod 6 is formed of two strips 6a, 6b perpendicular to each other and made of materials to obtain a rod of L-shaped section. This rod of L-shaped section makes it possible to have a strip 6a, parallel to the plane of the ground, which comes into contact with the acoustic insulation system, that is to say the assembly formed by at least one flexible underlay providing acoustic insulation and at least one other underlay providing mechanical resistance . The other strip 6b of the strip, the one which is orthogonal to the plane of the ground, comes into contact with the wall or low wall or element delimiting the room to be covered. We therefore understand that this rod acts as a buffer, joint between the layers applied to the acoustic insulating system (the glue and the covering) and the wall delimiting the room to be covered. However, the rod forming the uncoupling means is not limited to a rod having an L shape. Indeed, this rod may only comprise a single strip arranged orthogonally to the plane of the ground and placed between the layers applied to the acoustic insulation system and the wall delimiting the room to be covered.

Claims (16)

1. A method of manufacturing a tiled floor on a substrate (5) to be covered comprising the following steps in the order shown:

   a. applying a ready to use adhesive (C1) to the substrate,

   b. positioning by unrolling and sticking them side by side, with no gaps, on said substrate, a plurality of widths of an acoustic insulation system consisting of an insulating part comprising at least one flexible sub-layer (2a) providing acoustic insulation and at least one other sub-layer (2b-1, 2b-2) providing mechanical strength, the two sub-layers being fastened together,

   c. positioning separation means (6) at the perimeter and at the level of all the singular points emerging from the substrate to be covered, in particular the borders along the walls, the corners of rooms, pipes, or places where the widths are not perfectly juxtaposed, separation means (6) comprising at least one resilient material strip,

   d. applying a tile adhesive (C2) directly to the top sub-layer of the acoustic insulation system, and

   e. laying tiles (4).
2. The method as claimed in claim 1, characterized in that jointing means are positioned at the level of the joining part of two widths positioned consecutively on the substrate, after the step c).
3. The method as claimed in either one of the preceding claims, characterized in that the flexible sub-layer (2a) is constituted of at least one fibrous material of mineral or synthetic origin, of the glass fiber and/or polyester fiber type or of the synthetic cellular layer type, such as polyethylene or polyurethane.
4. The method as claimed in the preceding claim, characterized in that the flexible sub-layer (2a) is constituted of a felted or non-felted thermally bonded and carded synthetic non-woven material.
5. The method as claimed in either one of claims 3 or 4, characterized in that the flexible sub-layer (2a) comprises a plurality of layers disposed on one another and assembled to one another.
6. The method as claimed in any one of the preceding claims, characterized in that the sub-layer (2b-1) providing mechanical strength is a sub-layer based on compressed fibers such as plant fibers of wood, hemp type, mineral fibers of rock wool type, or based on synthetic composite materials such as synthetic fibers or synthetic resin, or based on a mixture of fibers and resin, preferably between 2 and 8 mm inclusive thick.
7. The method as claimed in the preceding claim, characterized in that the sub-layer (2b-1) providing mechanical strength is precut into slats.
8. The method as claimed in any one of claims 1 to 6, characterized in that the sub-layer (2b-2) providing mechanical strength is a thin and flexible sub-layer less than 4 mm thick.
9. The method as claimed in the preceding claim, characterized in that the sub-layer (2b-2) providing mechanical strength is a reinforcing mat, a reinforcing mesh, in particular a glass mesh.
10. The method as claimed in any one of the preceding claims, characterized in that the acoustic insulation system further comprises a sub-layer providing water-tightness which is an integral part of the acoustic insulation system.
11. The method as claimed in claim 10, characterized in that the watertight sub-layer is positioned on top of the flexible sub-layer providing acoustic insulation.
12. The method as claimed in either one of claims 10 or 11, characterized in that the watertight sub-layer is positioned either between the flexible sub-layer (2a) providing acoustic insulation and the sub-layer (2b-1, 2b-2) providing mechanical strength or on top of the sub-layer (2b-1, 2b-2) providing mechanical strength and under the tiles.
13. The method as claimed in any one of claims 10 to 12, characterized in that the watertight sub-layer is a sheet of synthetic material such as polyethylene covered on each side with a nonwoven material such as a polypropylene fiber nonwoven material, said sheet having a thickness less than 2 mm, or even less than 1 mm.
14. The method as claimed in any one of the preceding claims, characterized in that the separation means comprise at least one strip formed of two substrips perpendicular to one another and made of materials to obtain an L-section strip.
15. The method as claimed in any one of the preceding claims, characterized in that the separation means comprise a single strip extending over the totality of the perimeter of the surface to be covered.
16. The method as claimed in any one of the preceding claims, characterized in that the separation means comprise at least two strips arranged side by side to extend over the totality of the perimeter of the surface to be covered.

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