WO2003004794A1

WO2003004794A1 - Attic insulation

Info

Publication number: WO2003004794A1
Application number: PCT/FR2002/002243
Authority: WO
Inventors: Alain Gicquiau; Patrick Rougier
Original assignee: Rockwool Isolation S.A.
Priority date: 2001-07-04
Filing date: 2002-06-27
Publication date: 2003-01-16
Also published as: FR2826989B1; FR2826989A1

Abstract

The invention relates to panels of mineral wool which are used for roof (3, 4) insulation. Said panels take the form of strips (20) having a width that corresponds to the spacing, e.g. approximately 600mm, between the horizontal rows of fixing lugs (10) to which the sections (15) are mounted, said sections acting as a support for a wall of plasterboards. In this way, each panel can be inserted between two consecutive rows of lugs, without having to be connected to said lugs. Moreover, said panels are immediately held in position by the sections (15) before the wall has been installed.

Description

Insulating coating for the attic layout in a building

The invention relates to an insulating coating for a structure extending substantially along a plane in a building, comprising a multiplicity of elongated fastening elements extending from said structure substantially perpendicular to said plane and mutually aligned in rows. parallel and substantially equidistant from each other, a rigid facing, a series of profiles, each of which cooperates with the ends of the fastening elements of a row so that the set of profiles forms a support for said facing at a determined distance from said structure, and a thermally and / or acoustically insulating layer formed of mutually juxtaposed flexible panels to cover said structure in a substantially continuous manner, between the latter and the facing.

Such coatings are commonly used for fitting out and insulating roof spaces, the facing being formed from plasterboard and the flexible panels being made of mineral wool, in particular rock wool or glass wool. The term “flexible panels” is understood here to mean panels which can be folded or rolled up without damage, in particular for their storage and for their transport, as is the case for mineral wool panels.

The standards in force for attic layout provide for a horizontal orientation of the profiles with a center distance, and therefore a distance between the rows of fasteners, of 600 mm, and a spacing of the fasteners in each row. at most equal to 1200 mm. The usual mineral wool panels have a width of 1200 mm and a length of about 1400 mm. They are put in place with their small horizontal sides, being connected to the fastening elements constituted by tabs made of sheet metal. The racking-in operations are relatively long and inconvenient. In addition it is necessary to hold the panels in place temporarily before installing the profiles, manually or by other means, in particular when the structure to be coated is not vertical but inclined or horizontal and is coated on its underside.

The object of the invention is to remedy these drawbacks and to simplify the operations of laying flexible panels.

The invention relates in particular to a coating of the kind defined in the introduction, and provides that the flexible panels are in the form of strips of a width substantially equal to the distance between said rows, the two opposite edges of each of them coming into contact. respectively with the fasteners of two adjacent rows.

Thus, it is no longer necessary to plug the panels onto the fastening elements. In addition, they can be installed after the profiles, which immediately keep them in position. These advantages are obtained without changing anything in the fixing elements and the profiles or in their arrangement.

Optional, complementary or alternative characteristics of the invention are set out below:

- Said flexible panels are made of mineral wool, in particular rock wool.

- The width of the strips and the distance between said rows are approximately 600 mm.

- The width of the strips in the uncompressed state is greater than the distance between said rows by about 10 mm.

- Said rows are horizontal.

- Said structure belongs to a frame.

- The fastening elements are metal sheet legs, each of which is fixed to a structural element. - The facing is made of plasterboard.

The invention also relates to a method for producing a coating as defined above on a structure extending substantially along a plane in a building, in which the fixing elements are fixed to said structure, the profiles on the ends of the fixing elements, said strips are introduced through the intervals separating the profiles to extend them so that they bear by their opposite edges on the fixing elements, and the facing is fixed on the profiles.

The characteristics and advantages of the invention will be explained in more detail in the description below, with reference to the accompanying drawings.

Figures 1 to 5 illustrate five successive phases of an embodiment of the method according to the invention, applied for the development of the attic in a building with a conventional frame.

Figures 6 to 9 illustrate four successive phases of an embodiment of the method according to the invention applied to the development of the attic in a building provided with a truss structure.

Figure 1 shows different walls delimiting the attic of a building, namely a horizontal floor 1, a vertical gable 2 and two roof sections 3, 4 inclined in respective planes perpendicular to the gable 2. The sections 3 and 4 are formed juxtaposed roof elements 5 such as flat tiles, supported by a traditional frame composed of purlins 6 extending perpendicular to the gable 2, rafters 7 extending parallel thereto and battens 8 parallel to the purlins.

We also see in Figure 1 a multiplicity of legs 10 of known type, fixed on the rafters 7 in the usual way for the establishment of a coating insulating. More specifically, each tab is a piece of metal sheet comprising a strip 11 with parallel edges and an enlarged head 12 located at one end of the strip. A row of holes 13 is formed along the strip 11, along the median axis thereof. The strip 11 is applied, over part of its length, to a side of a rafter 7 extending in a vertical plane, to project towards the interior of the building, perpendicular to the plane of the roofing panel 3, 4. The strip is fixed to the rafter by screws or by nails passing through holes 13 and penetrating into the rafter, in a position such that the heads 12 of all the legs 10 associated with the same roof section are arranged in the same plane parallel to this section of roof. As can be seen in the figure, the legs 10 are arranged in staggered rows, in horizontal rows the mutual spacing of which is approximately 600 mm. In each row, one rafter out of two receives a leg, the mutual spacing of the legs thus being at most 1200 mm for a maximum spacing of the rafters of 600 mm. Due to the staggered arrangement, a rafter receiving no legs in a given row receives legs in the immediately adjacent rows.

It is at the stage shown in FIG. 1 that, in the state of the art, the flexible insulating panels, for example of rock wool or glass wool, are plugged onto the tabs 10. On the contrary, in the process according to the invention, profiles 15 are then put in place, also of the type usually used for insulating roof spaces, as shown in FIG. 2. Profiles 15 have an internal profile which cooperates with the profile of the heads 12 of the legs to allow snap-on mounting and immobilization of the profiles in position. A profile 15 is associated with each horizontal row of legs. Also seen in Figure 2 angle profiles 16 fixed on the sides of the purlins 6, in the plane of each series of profiles 15 associated with a roofing panel.

FIG. 3 shows, for each of the roof sections 3, 4, a first panel 20 of mineral wool in the form of a strip with a width of 600 mm, or several panels arranged one after the other, depending on the length of the available strips and the length of the roofing panel. The two lateral edges of each panel 20 bear respectively on the upper flank of a purlin 6 and on the lower edges of the strips 11 of the tabs 10 of the row located immediately above this purlin. A slight bending and / or compression of the panels allows them to cross the gap between the section 16 and the section 15, after which they are held in place by these sections. The other intervals, each comprised between two rows of legs 10 consecutive, or between a row of legs and a purlin, are then filled in the same way to arrive at the state shown in FIG. 4. For this, narrower strips 21 If necessary, cut from the 600 mm mineral wool strips to fill the intervals, each between a purlin and the row of tabs located immediately below it.

The last stage of the process is again in accordance with the state of the art. It consists in fixing plaster facing plates 22 on the support surfaces provided by the sections 15 and 16, in planes parallel to the planes of the roof sections 3, 4. Each plate 22 extends from the upper side of a purlin on the lower flank of the neighboring purlin, the purlins thus projecting with respect to the facing, and several plates that can be juxtaposed horizontally in each interval between purlins, depending on the dimensions of the plates and roofing sections.

In FIG. 6, the traditional framework of FIG. 1 is replaced by a series of identical prefabricated components called “small houses”, each of which is formed from boards assembled together and extending along a plane parallel to the gable 2. Each small house comprises two inclined boards 30, 31 extending over its entire height and meeting at its top, directly supporting the battens 8 of the two sides 3, 4 respectively and therefore playing the role of rafters. The boards 30, 31 are connected between them, in the vicinity of the top of the farmhouse, by a horizontal spacer 32. A horizontal board 33 starts from the base of each inclined board 30, 31 in the direction of the opposite board 31, 30, and rests on the floor 1. The free end of each board 33 is connected to the corresponding board 30, 31, in an intermediate region thereof, by a vertical support post 34. Finally, an oblique reinforcing spacer 35 connects the point of connection of the boards 33 and 34 to the board 30, 31, at a point located below its fulcrum on the vertical board 34.

We see in Figure 6 fixing lugs 10 similar to those of Figure 1, fixed in the same way as these on the vertical sides of the boards constituting the farms. The legs are fixed, either on the vertical boards 34, or on the inclined boards 30, 31, at a height between the upper end of the boards 34 and the spacers 32, so as to extend perpendicular to the longitudinal direction of the boards on which they are fixed.

In FIG. 7, profiles 15 similar to those of FIG. 2 are each hung on the heads 12 of the legs 10 of the same horizontal row, and two square profiles 16 similar to those of FIG. 2 are fixed to the floor 1, each in the vertical alignment of the series of sections 15 associated with the row of vertical boards 34 located below one of the roof sections 3, 4. For each roof section, the highest section 15 in the series associated with the boards 34 and the lowest profile 15 associated with the boards 30 or 31 are substantially adjacent, and the highest profile 15 in the series associated with the inclined boards 30 or 31 is close to the spacers 32.

In FIG. 8, each of the intervals between two consecutive horizontal rows of legs 10 is lined with panels of mineral wool 20 similar to those of FIGS. 3 and 4. Such a panel, or an alignment of several of them, is also placed, in a horizontal plane, on the two sections 15 close to the spacers 32, so as to extend immediately below these.

Finally, plasterboards 22 are fixed on the sections 15 and 16 to reach the final state shown in FIG. 9. These boards are arranged in two rows 40 extending along vertical planes, fixed on the associated sections 15 to the vertical boards 34 and on the sections 16, two inclined rows 41, 42 fixed on the sections 15 associated with the inclined boards 30 and 31 respectively, and a row 43 extending along a horizontal plane, fixed on the two most profiled sections 15 high, together with rows 41 and 42.

It is understood that the above description has no limiting character. In particular, the fastening devices may have a configuration different from that of the tabs described and shown. The structure to be coated is not necessarily a frame. It may be a substantially continuous wall such as a wall, requiring appropriate fixing means, as known per se. The structure can also be horizontal.

Claims

claims

1. Insulating coating for a structure (3-8) extending substantially along a plane in a building, comprising a multiplicity of elongated fastening elements (10) extending from said structure substantially perpendicular to said plane and mutually aligned in parallel and substantially equidistant rows, a rigid facing (22), a series of profiles (15) each of which cooperates with the ends of the fastening elements of a row so that all of the profiles form a support for said facing at a determined distance from said structure, and a thermally and / or acoustically insulating layer formed of flexible panels (20) mutually juxtaposed to cover said structure in a substantially continuous manner, between the latter and the facing, characterized in that said flexible panels are in the form of strips of a width substantially equal to the distance between said rows, those of ux opposite edges of each of them being in contact respectively with the fasteners of two adjacent rows.

2. Coating according to claim 1, wherein said flexible panels are made of mineral wool, in particular rock wool.

3. Coating according to one of claims 1 and 2, wherein the width of the strips and the distance between said rows are about 600 mm.

4. Coating according to one of the preceding claims, in which the width of the strips in the uncompressed state is greater than the distance between said rows by approximately 10 mm.

5. Coating according to one of the preceding claims, wherein said rows are horizontal.

6. Coating according to one of the preceding claims, wherein said structure belongs to a frame.

7. Coating according to claim 6, wherein the fastening elements are tabs (10) made of metal sheet, each of which is fixed to a frame element (7).

8. Coating according to one of the preceding claims, in which the facing is formed from plasterboard (22).

9. Method for producing a coating according to one of the preceding claims on a structure (3-8) extending substantially along a plane in a building, in which the fixing elements (10) are fixed to said structure, in place the profiles (15) on the ends (12) of the fastening elements, said strips (20) are introduced through the intervals separating the profiles to extend them so that they bear by their opposite edges on the elements fixing, and the facing (22) is fixed to the profiles.