ES2549222T3 - An insulating frame for a roof window and a method for mounting a roof window - Google Patents

Abstract

An insulating frame (4, 5) for a roof window mounted on an inclined roof structure of a building, comprising upper, lower and lateral members, each including an insulating member (43, 55, 57), and a plurality of connector supports (41a, 41b, 42), said insulating frame defining an internal opening adapted to surround the frame (2) of the roof window and said insulating frame having an inner side intended to be oriented towards the interior of the building and an outer side intended to be oriented outwardly, and each frame member having an inner side facing the inner opening and an outer side facing outward from the inner opening, in which the length and / or width of the inner opening they vary on the height of the insulating frame perpendicular to the plane defined by the frame members, such that, on the outer side, the length and width of the internal opening correspond substantially to the corr spontaneous external dimensions of the roof window, while on the inner side, the length and / or width of the internal opening is / are smaller than the corresponding external dimensions of the roof window, characterized in that: it comprises a first set of connector supports (41a, 41b) and a second set of connector supports (42), said first set of connector supports being adapted to connect the insulating frame (4, 5) to the roof structure and extend over at least half of the length of at least two frame members forming opposite sides of the insulating frame, and said second set of connecting supports connecting the side members to the upper and lower members of the insulating frame.

Description

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DESCRIPTION

An insulating frame for a roof window and a method for mounting a roof window

The present invention relates to an insulating frame for a roof window mounted on an inclined roof structure of a building, comprising upper, lower and lateral members, each including an insulating member, and a plurality of connecting brackets, defining said insulating frame an internal opening adapted to surround the roof window frame and said insulating frame having an inner side intended to be oriented towards the inside of the building and an outer side intended to be oriented towards the outside, and each member having frame an internal side oriented towards the internal opening and an external side oriented towards the outside of the internal opening, in which the length and / or width of the internal opening vary over the height of the frame perpendicular to the plane defined by the frame members, such that, on the outer side, the length and width of the internal opening correspond substantially to the corresponding external dimensions of the roof window that the frame is intended to receive, while, on the inner side, the length and / or width of the internal opening is / are smaller than the corresponding external dimensions of the roof window. The invention also relates to a method for mounting a roof window in an inclined roof structure.

Such insulating frames, which are known for example from EP1061199A1, which describes an insulating frame according to the preamble of claim 1, have found wide use and considerably improved the insulating properties of inclined roof structures with roof windows, but Insulation demands continue to rise.

As is well known to experts, the work associated with mounting insulating frames and windows on a sloping roof structure is a challenge, not only during strong winds. Therefore, what happens is that the insulating frame is not mounted correctly. This, in turn, causes difficulties during the subsequent assembly of the window and / or other associated components such as an indoor collar or a cover panel and / or negatively influences the insulating properties.

Therefore, it is the object of the invention to provide an insulating frame that is easier to mount correctly, and it is a further object of the invention to provide an insulating frame with even more insulating properties.

This is achieved with an insulating frame comprising a first set of connecting brackets and a second set of connecting brackets, said first set of connecting brackets being adapted to connect the insulating frame to the roof structure and extend over at least half of the the length of at least two frame members forming opposite sides of the insulating frame, and said second set of connecting brackets connecting the side members to the upper and lower members of the insulating frame. The use of two separate sets of brackets instead of one set, both serving to connect the frame members and as mounting brackets as in EP 1061199A1, has numerous advantages. First, the first set of connecting brackets gives the insulating frame a more continuous support over the entire length of the frame members, thereby preventing asymmetries and keeping it in place during the assembly of the window. Secondly, since the second set of connector supports serves only to interconnect frame members, this can be relatively small, which means that the thermal conductivity at the corners of the insulating frame can be kept low. Thirdly, keeping the corners of the insulating frame relatively simple makes it easier to mount the roof windows with corner mounting brackets, since different types of brackets will not conflict with each other. And, fourthly, when the roof window is mounted relatively deep in the ceiling, also known as a recessed installation, it is known that the corner brackets of the prior art insulating frames are interposed between the protective and lining necessary to seal the joint between the lower member of the window frame and the roof structure. Therefore, some prior art insulating frames have been provided with two different versions of supports; one for normal installation and one for recessed installation. With the present invention this is no longer necessary and, therefore, the use of two separate sets of brackets, which apparently seems like a solution that increases the cost, actually decreases the costs and reduces the risk of improper assembly because The insulating frame is always mounted in the same way.

The fact that the connecting brackets of the first set extend over at least half the length of the respective frame members means that they provide a good and continuous support and also provides rigidity to the frame member, which can, of In this way, protect yourself against collapse. In a preferred embodiment, the connector supports of the first set extend over more than three quarters of the length of the frame member and in another embodiment those connector supports extend substantially over the entire frame member, but stopping at a distance of 1- 10 cm from each end of the frame member.

Each of the connecting supports of the first set preferably comprises a flange portion that projects outwardly from the opening of the frame on the outer side of the insulating frame and that is adapted to be attached to the roof structure. This can be achieved, for example, by using angular supports arranged with one leg projecting towards the flange and the other attached to the outer side of the insulating member. The fact of joining the connector supports of the first set to the external sides of the insulating members has the advantage that the supports do not form thermal bridges. For the same reason, parts of the first set connector holders that 2 10

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they are in contact with the insulating frame members may have openings or sections of decreased thermal conductivity. This can also potentially contribute to reducing material costs.

The flange portion is preferably adapted to be attached to slats of the roof structure, but this can also be attached to beams or to a low ceiling. The flange does not need to extend over the entire length of the support and it is preferred that the 3 to 10 cm furthest from the insulating frame member closest to each end be without a flange as such.

Weakened openings or areas can be provided through which a nail or screw can be driven into the flange portion, and / or the flange portion may be provided with other joining means, such as nails

or an adhesive material.

The flange of the connector support can be continuous, extending over most of the length of the insulating frame member, as described above, but it is also possible to use brackets with a series of local flanges, for example, to give rise to brackets of Mounting used to secure the roof window to the roof structure. It is also possible that the flange portion is only partially interrupted in the positions intended for the window mounting bracket or other components of the roof or window structure, the flange having either an opening or a cavity, or being made of a material thinner, which is easily penetrated.

It is also possible, of course, to use brackets that do not have any flanges at all, and that are instead connected to the roof structure by means of nails, rings or staples, or to combine different joining methods.

Advantageously, the connector supports of the first set are also adapted to serve as stiffness members. If an angular support is used as described above, the necessary stiffness can be achieved simply by making the support with a sufficient thickness of material, for example, by making the flange with a folded edge, but it is also possible to provide the support with an additional flange. An additional flange as such may project to the insulating member of the frame, but the effect on the insulating properties of the frame must always be considered.

The connecting supports of the first set are preferably made of steel by folding or forming by lamination, but can be made of any suitable material selected from the group consisting of: steel, stainless steel, aluminum, other metals, plastic, ceramics, fiberglass, composite materials and combinations thereof.

The insulating members could be made of a dimensionally stable material to facilitate the insertion of the roof window frame into the internal opening, said material being preferably selected from the group consisting of: extruded polyethylene, other polymeric foams, mineral wool, bonded wood fibers with glue, composite materials and combinations thereof. Extruded polyethylene with a density of approximately 30 kg / m3 has suitable properties for this use.

The second set of connector supports, which are used to interconnect frame members, can be made of the same material as the first set of connector supports, but the common or elastic steel resistant to rust is very suitable for this purpose.

The actual interconnection is preferably achieved by elastic locking of the connector supports of the second set to the insulating members or members attached thereto, preferably to the connector supports of the first set. In a simple and therefore inexpensive embodiment, this is achieved by at least one lug projecting from a connector support of the second set that is brought to the snap lock coupling with an opening provided in a connector support of the first game, the lug being forced aside when the connector support of the first set is inserted into the connector support of the first set and snapping outward again when it reaches the opening.

To ensure a good stability of the insulating frame, the connecting supports of the second set are preferably made as an angular support, in which each leg is also of an angular shape in cross section, thus giving a three-dimensional stability to the joint , as will be explained in detail later.

In another advantageous embodiment, at least one frame member is provided with a compressible layer or member on its outer side. This allows the insulating frame to compensate for variations in the opening in the roof structure, such that there is always a close contact between the inner side of the opening and the insulating frame, which is important for insulating properties. Variations in the roof opening can be, for example, the result of imprecise or slightly out of the opening size, being a common standard tolerance when roof windows are mounted, about 20 mm. When the insulating frame is installed in the roof structure, the compressible layer will give way wherever the roof opening is smaller than the external dimensions of the insulating frame in the uncompressed state.

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The compressible layer is preferably made of a soft polymer foam, such as a polyurethane foam with a density of 15 kg / m3, which is durable in the rather rough environment found in a roof construction, and also fire resistant. To provide the most tight fit possible with the opening in the roof structure, the material should preferably be elastic, which is also the case with polyurethane foam.

To allow a further adaptation of the insulating frame in the event that the opening in the ceiling is too small, at least part of the insulating members may be provided with a longitudinal groove that extends from the inner side to the outer side and that allows a part of the insulating frame member material to be removed. A removal as such of insulating material will, of course, influence the total insulating properties of the finished construction and, therefore, should be avoided if possible, but as the alternative is often to exclude entirely the insulating frame and since the cleft It is not harmful if not used, this embodiment is considered advantageous in any case.

In another embodiment, the insulating frame includes a protrusion on its inner side, which projects below the roof window frame in the assembled state. In this way, it wraps the outer inner corners of the window frame and complements the insulating material, which is traditionally arranged between the inner side of the opening in the roof structure and a cover panel. The protrusion defines an imaginary division of the insulating frame into an outer part, which extends along the outer side of the window frame in the mounted state, and an inner part, which is below the window frame in the mounted state. In other words, an outer part in which the length and width of the internal opening substantially corresponds to the corresponding external dimensions of the roof window and an inner part in which the length and / or width of the internal opening is / they are smaller than the corresponding external dimensions of the roof window, the transition between the outer part and the inner part being abrupt so that a protrusion is formed on the inner side of the insulating frame. It is also possible, however, to make at least part of the insulating members with an oblique internal surface such that, when the window is mounted, it slides as much as possible into the insulating frame opening, under the influence of gravity and, depending on the nature of the insulating material, possibly compresses the insulating member in such a way that it comes to surround the corner of the insulating frame.

Many roof windows are provided with a longitudinal groove in the inner surface of the roof window, to receive and retain an edge of a cover panel. To improve the insulating properties of the finished structure even more, and to help keep the insulating frame in position relative to the window frame, the projection of the insulating frame may be provided with a projection projecting towards the outer side of the insulating frame and that is adapted to project into a groove on the inner side of the roof window. Since the groove is often inclined towards the outer side of the window frame, the projection is preferably wedge-shaped and is located on the inner side of the shoulder, its base preferably occupying approximately half of the width of the shoulder. The wedge shape also minimizes the risk that the projection obstructs the subsequent insertion of the cover panel and this insert can also be aided by making at least a section of the inner side of the insulating frame members closest to the oblique inner side so such that the internal opening gradually becomes smaller as the distance from the inner side increases, preferably the section of the internal side extending obliquely the entire length from the shoulder to the inner side.

The insertion of the cover panel will often result in the inner part of the insulating members being pushed out, away from the internal opening and, when simple sized brooches or brackets are used as the second set of connecting brackets, this it can result in the corner joints between frame members being forced to open. To avoid this, the end or ends of at least part of the insulating members can be made oblique, such that the inner side of the insulating member is longer than its outer side, thereby providing additional material that compensates for movement towards outside an adjacent insulating member. This can be achieved simply by making the insulating member with additional length and allowing the oblique part to project in the delivery state, but it is also possible to use a compressible material, such as the soft foam described above. The oblique end section preferably extends from the shoulder to the inner side.

Embodiments of the invention will be explained in more detail below, with reference to the schematic drawings, in which:

Figure 1 is a perspective and partially sectioned view of a roof structure with a frame for a conventionally mounted roof window;

Figure 2 is a perspective and partially sectioned view of a roof structure with a frame for a roof window mounted according to the invention;

Figure 3 is a cross-sectional view along line III-III of Figure 2;

Figure 4 is a cross-sectional view along line IV-IV of Figure 2;

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Figure 5 is a cross-sectional view along the line V-V of Figure 2;

Figure 6 is a perspective view of an insulating frame according to the invention;

Figure 7 is an enlarged view of the detail marked with VII in Figure 6;

Figure 8 shows the connection between a connector support of the second set and two connector supports of the first set in a perspective view with the insulating members removed;

Figure 9 is a perspective view of a connector support of the second set;

Figure 10 is a perspective and partially sectioned view of a roof structure with a frame for a roof window mounted according to another embodiment of the invention;

Figure 11 is a cross-sectional view along line XI-XI of Figure 10;

Figure 12 is a cross-sectional view along line XII-XII of Figure 10;

Figure 13 is a cross-sectional view along line XIII-XIII of Figure 10;

Figure 14 is a perspective view of an insulating frame according to another embodiment of the invention;

Figure 15 is an enlarged view of the detail marked with XV in Figure 14;

Figure 16 is a perspective drawing of a roof window mounted on a roof structure illustrating the connection of an indoor collar according to the prior art;

Figure 17 shows the lower end of the left lateral limb of an indoor collar seen from the inner side;

Figure 18 is a photo of the lower right side of a roof window during the assembly of an indoor collar; Y

Figure 19 is an enlarged view of the detail marked with XIX in Figure 6.

An example of a roof structure 1 with beams 11 and slats 12 is shown in Figure 1, which are perpendicular to the beams and are intended to support a roofing material (not shown), such as shingles or slates. Counter-slats 13 extending in parallel with the beams provide a distance between the slats and the beams.

Below the slat structure 12, 13, an impermeable membrane 14 serves as the outer side of a low ceiling. The waterproof membrane can consist of a felt of roofing material, a reinforced plastic laminate or an aluminum film, and can be both diffusion-tight, in which case suitable ventilation devices can be mounted on the membrane to ventilate the low ceiling , as open for steam diffusion. The impermeable membrane 14 is supported here on a layer 15 of boards or sheets of wood, but it is possible to use only one membrane.

Between the beams 11 there is an insulating layer 16 that can be soft or hard, typically consisting of mineral wool, glass wool, wood chipboard, plastic foam, or other similar materials and, on the inner side, the roof is finished by a steam seal 17, such as a laminate of plastic or aluminum sheets, and an inner cover 18, which may consist of boards, plasterboards, or other similar materials.

A frame 2 for a roof window has been mounted in an opening 3 cut out in the low ceiling, removing part of one of the beams 11 'as well as sections of slats and counter-slats. The window frame 2 is attached to the roof structure 1 in a conventional manner, being connected here to two counter slats 13 and auxiliary slats 19 (only one visible) by means of traditional angle fittings 21.

Next, the elements that have the same or analogous function as those described in Figure 1 will be given the same reference numbers even though they may not be identical to those shown in Figure 1.

In Figure 2 a window frame 2 is installed in an insulating frame 4 according to the invention, the roof structure 1 being illustrated here only by a simple beam 11, a simple counter-slat 13, a waterproof membrane section 14 and short sections of slats 12.

The insulating frame 14 is supported on the slats 12 by connecting brackets 41a, 41b as will be described in detail below, and window mounting brackets 21, 21 'are projected on the outer side of the insulating frame, which is substantially level with the outer side of the slats. In this case, two different types of window mounting brackets are used, in particular, a set of traditional angular brackets 21 such as that of Figure 1, and a set of more complex brackets 21 'in the upper and lower members of the frame of window.

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Throughout this text, the terms "upper", "lower" and "lateral" are used to indicate the intended position of different parts in the mounted position, even though those parts may be located differently during, for example, the storage and transport, or before mounting the insulating frame. Similarly, the terms "interior" and "exterior" are used to indicate that something is intended to be oriented towards the interior or exterior of the building in which the insulating frame and the roof window are mounted, respectively, and the terms "Internal" and "external", that something is intended to be oriented towards or away from the inner opening of the insulating frame, respectively, in the assembled state.

Changing now to Figure 3, a side member of the insulating frame 4 and of the window frame 2 are shown in cross section along the line III-III of Figure 2. As can be seen, the insulating frame has a height H which allows it to extend from the outer side of the slats 13 to a level below the outer side of the beams 11, thereby effectively preventing heat loss in the gap between the window frame 2 and beam 11.

The insulating member 43, which constitutes the bulk of the frame member, is made of a material of a dimensionally stable nature, which has good insulating properties, preferably of polymer foam, such as extruded polyethylene (PE) with a density of approximately 30 kg / m3 and a thermal conductivity of 0.040 W / mºK. However, mineral wool and other insulating materials such as polypropylene (PP) foam, polyurethane (PU), polyvinyl chloride (PVC), expanded polystyrene (EPS) or extruded polystyrene (XPS) can also be used. The material chosen should preferably be resistant to fire and moisture, and the choice of a material with a certain elasticity will facilitate installation. The insulating frame members may be made by molding, extrusion or cutting, and possibly assembled from two or more pieces by means of adhesives, gluing or welding, or by mechanical means.

In this embodiment, the cross-sectional shape of the insulating member 43 is such that a shoulder 44 is formed on the inner side that is oriented towards the opening 3. In the assembled state, the inner side of the window frame 2 borders the shoulder , such that the insulating material surrounds the corner of the window frame. This not only helps the insulating properties of the total structure, but also helps to ensure that the window frame 2 and the insulating frame are correctly positioned relative to each other. Here, this effect is further enhanced even by providing a projection 45 on the projection 44 that projects into a groove 23 on the inner side of the window frame 2. In addition to insulating, the projection 45 also helps guide a panel of covering (not shown), which must then be inserted into the groove 23, instead, and for the same purpose the inner side of the insulating frame member below the shoulder 44 is slightly oblique.

It is emphasized that even when the shoulder 44, the projection 45 and the oblique internal lateral surface are shown and described here in relation to an embodiment of the invention, these features are not dependent on each other and that one or more of these can be used without the others.

As can be seen in Figures 4 and 5, the upper and lower members of this insulating frame are substantially identical to the lateral members and will therefore not be described in greater detail.

In the embodiment shown, the connector supports 41a, 41b used to secure the insulating frame 4 to the roof structure 1 extends over most of the length of the respective frame members. This means that the insulating frame is not only supported locally, but over most of its length and that it can be connected to the roof structure in different places. In Figure 2, the side member of the insulating frame is connected to four different slats 12, which not only supposes a good support but also that the insulating side frame member is kept straight, while it is known that the insulating frames of the prior art are twisting or bending, which makes mounting the window frame difficult.

In this embodiment, the connector supports of the first set 41a, 41b have flanges 410 that extend over their entire length and project outwardly from the opening 3. This means that it is not necessary to have the connector supports and slats in exact positions about in relation to others to achieve adequate support for the insulating frame. It should be noted that the insulating frame does not need to be attached to the slats or other parts of the roof structure but can simply be supported on the top of these, since the subsequent fastening of the roof window will also secure the insulating frame. However, in order to keep the insulating frame in position before and during the installation of the window frame there, it may be advantageous to connect at least part of the first set connector supports to the roof structure. To this end, and to facilitate the subsequent fastening of the window mounting brackets, a series of holes 411 are provided along the length of the flanges that allow a clamp, nail or screw to pass.

Continuous flanges also increase the rigidity of the connector supports and, thus, of the insulating frame as such.

The connector supports 41a, 41b of the first set can be simply cut from a rolled metal and bent to form the flange 410, but to reduce the risk that the person assembling the insulating frame will cut with sharp edges, at least the outer edge of flange 410 is preferably made as a folded edge. This has the added advantage of contributing further to the strength and stability of the connector support.

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The flanges 410 of the connector supports of the first set 41a, 41b here stop at a distance D from the corners of the frame, as can be seen more clearly in Figures 6 and 7. This has several purposes. First, the amount of material, which can potentially function as a thermal bridge in the corners, is minimized. Secondly, the connection of the insulating frame members for the formation of the insulating frame is not hindered by the connecting brackets of the first set. Third, when the roof window is mounted by means of the mounting brackets attached to the corners of the window frame 2, the connector brackets do not interfere. For the latter purpose, however, it may be sufficient to simply provide openings and / or cavities 413 in the connector brackets, which allow the flanges of the window mounting brackets or adjustment means such as nails, screws or pins to pass, such as It is shown on the connector bracket used at the bottom of the insulating frame in Figure 7.

As best seen in Figures 3-5, the first set connector support is, in this embodiment, provided with a second flange 412 which is also projected in parallel with the plane of the insulating frame, but towards the insulating member 43. This Flange is intended to provide strength and rigidity to the frame member and to reinforce the connection between the insulating member and the connector support, but is also used for interconnection with the connector supports of the second set, as will be explained later.

It is usually preferred to insert the second flange 412 into a slot previously cut in the insulating member and to connect the connector support to the insulating member by means of an adhesive disposed on the inner side of the connector support. If the insulating member is made by molding, the connector support can be attached embedded in the insulating material during the molding process.

When the connector supports of the first set are made as described with reference to Figures 1-8 and made of stainless steel and the insulating members are made of extruded polyethylene (PE) with a density of approximately 30 kg / m3 there is no need of providing additional members. The supports and the insulating member are themselves strong and rigid enough to give the insulating frame the required properties. In other cases, however, it may be convenient to add stiff members to one or more frame members. Moreover, it may be convenient to apply a surface cover or coating to one or more members if any of these are made of materials that are not weather resistant in a roof structure, or are not fire resistant.

Thermal conductivity is a topic that must be considered in the design of all parts of the insulating frame and when the first set connector supports are made of metal, as is the intention with the support shown in the drawing, special care must be taken to avoid the formation of thermal bridges. The part 414 of the connector supports of the first set, which is parallel to the outer surface of the frame member 43, is therefore provided with a series of holes 415 as seen in Figure 7, which minimize thermal conductivity, but that have virtually no influence on the strength and stiffness of the support. The support, however, could also have been provided with inlays of a different material with more advantageous thermal properties or had been made entirely of a different material, such as a polymer. Holes or similar structures may be provided to minimize thermal conductivity in flanges 410, 412.

In the embodiments shown, the connector supports of the first set 41a, 41b are used as junction points for the second set of connector supports 42 used for interconnecting the frame members. Figure 8 shows two connector supports 41a, 41b of the first set from the inner side, that is, in the direction of arrow VIII of Figure 7, in which the insulating members have been removed. As can also be seen in Figure 9, the connector support 42 of the second set is double angular in shape, with two legs each projecting in the direction of one of the connector supports of the first set, that is, here in the direction of the side and bottom of the frame, respectively. Each of these legs are, again, of an angular shape, with a part 421 arranged in parallel with the outer side of the corresponding insulating member 43, that is, perpendicular to the plane of the frame, and another 422 corresponding to the second flange 412 on the connector supports of the first set 41a, 41b, that is, projecting in parallel with the plane of the frame towards the internal opening 3.

The connector support 42 of the second set is inserted into grooves formed in the connector supports 41a, 41b of the first set, those grooves being formed by folded parts above 416, 417. As can be seen in Figure 8, one of those folded parts 416 it is located at the end of the connector support 41a, 41b of the first set and is used only for connection with the connector support 42 of the second set, while the other 417 extends almost over the total length of the connector support of the first set and constitutes the second flange 412 mentioned above. Other ways of achieving a precise positioning of the two types of support can easily be imagined by the skilled persons and it should also be understood that the connector supports of the second set can be similarly clamped on separate locking members (not shown) provided on the insulating member 43, independently of the first set of connector supports 41a, 41b.

On the part 421 of the connector support of the second set arranged perpendicular to the plane of the insulating frame, two small lugs 423 have been cut and pressed slightly upwards, one on each leg, as seen in Figure 9. Each of those lugs 423 it is adapted to engage with an opening 418 in a connector support 41a, 41b of the first set, such that two types of connector supports are snapped together with one

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the other when the connector support of the second set is inserted into the connector supports of the first set as shown in Figure 8. In Figure 7, one of those lugs 423 is visible through the opening 418 on the right-hand end of the lower limb.

On the edge of each lug 423 facing outwardly from its attachment to the connector support 42, there is a small deformation 427. This deformation serves three purposes. First, it prevents the lug 423 from going too far out of the opening 418 in the connector support 41a, 41b of the first set, (given) which comes to rest on the outer side thereof in the assembled state, in which in case the two connector supports 41a, 41b, 42 could slide relative to each other. Second, it reduces the width of the lug sufficiently to allow it to be pressed back into the opening that formed when the lug was cut, without substantial friction. Third, it helps improve the elasticity of the lug.

Oblique end surfaces 424 on the legs of the connector support 42, shown in Figure 9, help guide the support during insertion into the connector supports 41a, 41b of the first set and there are projections 425 on the side surfaces adapted to engage with the ends of the folded edges 416, 417 to stop insertion at the desired depth. The lugs preserve the connector support of the second set from being drawn out involuntarily and the projections preserve it from being inserted too deeply.

It should be understood that the embodiment described above and shown in the drawings is only one of the many embodiments of the invention that fall within the scope of the claims and that, for example, the connecting brackets of the second set need not be in direct contact with those of the first game.

Similarly, it is noted that even though the lugs 423 and the projections 425 on the connector support of the second set 42 have been shown and described here in relation to a simple embodiment of the invention and in combination with the folded parts above 416, 417 and the openings 418 on the connector support of the first set 41a, 41b, these characteristics are not dependent on each other and can be used one or more without the others.

The connector supports 41a, 41b, 42 shown in the drawings are all intended to be made from rolled metal by cutting and folding, with steel being the preferred material due to its strength and rigidity. However, it should be understood that both one and both sets of supports can be made in other ways such as by molding, and / or from other materials such as aluminum, stainless steel, polymers or composite materials, and can have different zones made of different materials. In the same way, it should be understood that all the connector supports of a set do not need to be identical, but can have different shapes and / or be made of different materials.

In the embodiment shown in Figures 1-3, the internal sides of the opening 3 in the roof structure are defined by the lateral surface of the beam 11 and the cut made in the slat 12, when the opening is made. However, if the distance between beams 11 or the width of the window frame 2 is different, the inner side of the opening 3 may be defined by the side surface of one or more trimmed beams (not shown) arranged in parallel with the beams .

When opening 3 is made in the ceiling, it is not always possible to reach the dimensions that correspond exactly to the external dimensions of the insulating frame 4, and a common standard tolerance when mounting roof windows is 20 mm. To be able to compensate for such variations, the insulating frame 4 is provided with a soft foam layer 48 on the outer sides of the side members. If the opening 3 becomes slightly smaller than prescribed, this soft foam layer 48 can simply be compressed during the assembly of the insulating frame. In the embodiment shown, the soft foam layer 48 has a width of approximately 10 mm, but if it is desired to leave a margin for tolerances greater than the common standard, the soft foam layer can be made wider. The compressible layer or member 48 is provided here on the outer side of the connector support 41a, 41b of the first set to allow optimum compression and secure attachment of the support to the insulating frame.

Here, compressible foam members 48 are provided only on the side members of the insulating frame, which are in contact with the beams and trimmed ends of the slats, where the risk of inaccurate cutting is greater, but it should be understood that the members can be made upper and lower in a similar way.

The soft foam layer is preferably made of polyurethane with a density of 15 kg / m3 and a thermal conductivity of 0.040 W / mK, but other materials, particularly other polymer or mineral wool foams, can also be used. The chosen material should preferably be resistant to fire and moisture.

An additional independent possibility to adapt the insulating frame is provided by the groove 49 formed on its inner side. This slit allows the removal of the material on the outer side of the slit (the left side in Figure 3) thus allowing the insulating frame to fit between beams that are a little closer to each other. In the embodiment shown in Figures 2 and 3, this leaves a margin for an additional tolerance of approximately 15 mm in addition to the 20 mm allowed by the soft foam.

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Once the insulating frame 4 and the roof window have been assembled, the connection between the window and the roof construction must be made waterproof on the outer sides. This is achieved by means of protective and cladding members, as is well known to skilled persons, and it is also preferred to apply an indoor collar such as that described, for example, in WO2006002629A1, which is then coupled to the 14 waterproof roof membrane.

On the inner side the joint is normally terminated by providing a vapor barrier (not shown), which prevents steam from entering the roof structure, and, when the window is mounted where it is visible to the users of the building, of a cover in the form of a cover panel (not shown). The vapor barrier may be a collar similar to the roof collar described above and connected to the steam seal 17 of the low ceiling, while the cover panel normally consists of veneer or plasterboard inserted in the groove 23 in the inner side of the window frame member, on one side, and connected with the inner cover 18, on the other.

Termination work on the inner side, particularly the insertion of the cover panel into the window frame cavity, can cause the insulating members 43 of the insulating frame to be forced out, away from the opening 3. When the frame is assembled Insulator 4 only by means of supports 42 such as that shown in Figure 9, the inner parts of the insulating members are free to move relative to each other, and therefore will be forced to move away when they move outwardly through the opening . To avoid this, the ends 431 of the side frame members are made slightly oversized with an oblique surface corresponding at an angle to the outer surface of the inner part of the lower insulating frame member when forced outward.

In the embodiments shown, the insulating material of the upper member of the insulating frame is further provided with a small cavity 432, as can be seen in Figures 6, 14 and 19. This cavity is adapted to accommodate electronic components (not shown) used to control the operation of a motor-driven window, and it should be understood that the shape, size and position of the cavity may vary and that there may be more than one cavity. A groove 433 in the insulating material, which extends from the cavity towards the inner side of the insulating frame perpendicular to the longitudinal direction of the upper frame member, is adapted to accommodate cables, wires, etc., necessary to supply power, signals from control, etc., to and from the electronic components that are in the cavity.

The insulating frame described above is adapted for mounting roof windows on a traditional level, but in some buildings the windows are mounted lower on the roof, so that its outer surface is substantially at the roof level, also known as recessed installation. An insulating frame 5 adapted for this purpose is shown in Figures 10-15, which correspond to Figures 1-7. Only differences with respect to the insulating and mounting frame described above will be explained in detail, while features that have the same function in both embodiments will have the same reference number and will not be described again.

As can be seen by comparing Figures 11-13 and Figures 3-5, the cross-sectional shape of the frame members of the insulating frame 5 intended for recessed installation, from now on, the recessed insulating frame, is different from that of the standard insulating frame in which the boss 54 is located closer to the inner side. This allows the window to be located deeper in the ceiling, and the loss of insulation on the inner side of the window is assumed for a larger portion of the window frame that is surrounded in the insulating frame, seen in the direction of the height. The common difference in depth between the standard and recessed mounting is 40 mm, but in the embodiments shown in the drawing, a part of this difference is compensated by the recessed insulating frame, which has a greater height.

Another difference in the side member of the insulating frame is seen in Figures 14 and 15, which describe a curved cavity 50 on the inner outer side of the side member of the insulating frame, opposite the lower member. The purpose of this cavity is to provide space for the protection component (not shown) used on the outside of the window to drain water out of the window and on the roof under the window. Since the window is installed relatively deep in the ceiling, the protection member used in the lower member of the window has to "raise" the water to the ceiling level, which, as is known to skilled persons, It is achieved by giving it a smaller slope than the slope of the roof. Since the slope may, of course, not be negative, the channel-shaped protection component used for this purpose occupies a space that has to be provided in the insulating frame. Consequently, the lower member 55 of the insulating frame is also provided with a channel-shaped cavity 56 corresponding to the shape of the protective member. In this case, the angle of the cavity 56 is not sufficient for it to reach the level of the roof and, therefore, an additional block of insulating material 6 with an oblique outer surface must then be provided with the cavity. However, it should be understood that some protection members will be able to cover a space between the lower member 55 of the insulating frame and the first slat 12 carrying the roof, in which case the additional block 6 can be dispensed with, and / or could be replaced the additional block with an auxiliary ribbon.

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In the embodiment shown, the side members of the insulating frame are made with curved cavities 50 at both ends, such that the right and left side members are identical and the risk of incorrect assembly is reduced. In normal use, the cavities in the upper part are superfluous and the upper member 57 is therefore provided with projections 571 at both ends on the outer side, these projections filling the cavities 50 completely or partially in the assembled state, as can be seen in Figure 14.

A further consequence of the deep position of the window and, therefore, of the lower member 55 of the insulating frame, is that a connector support on the lower member of the insulating frame will not reach the slats. As can be seen in Figures 13-15, the lower member is therefore provided with only one stiffening member 51, corresponding in design to the connector support 41b used in the upper and lower part of the standard insulating frame, but lacking the flange. 410 used for the interconnection of the roof structure.

The upper member 57 of the recessed insulating frame could, in principle, be provided with a connector support, but in this embodiment, it has been chosen to use a frame member that is identical to that of the lower part 55 except for the channel-shaped cavity , which means that these can be made from the same basic components. This also means that the first sets of connector brackets here include only two brackets 41a arranged on opposite sides of the insulating frame, while the standard insulating frame includes four brackets, one on each frame member.

Yet another consequence of the recessed installation is that the mounting brackets used to mount the roof window will also get in the way if they are placed on the top and bottom of the window, as in Figure 2. In Figure 10 they have moved, by therefore, those supports 21 'to the side member of the window frame. This means, in turn, that the connector support of the first set in the side member of the recessed insulating frame has to be provided with openings 513 corresponding to those 413 provided in the connector support of the first set in the lower member of the standard insulating frame. , as seen in Figure 15.

When the insulating frame 4 and the window frame 2, or possibly the entire window, have been mounted on the roof structure, it is common practice to install an under-roof collar 7 to make the joint between them and the roof structure waterproof, as shown in Figure 16. The collar includes a skirt portion 71 intended to extend against the under roof and an internal trim 72 surrounding an opening corresponding in size to the external dimensions of the window frame. The joints between the roof structure and the insulating frame, and between the insulating frame and the window frame are both covered and, therefore, sealed by the collar, and the insulating frame is thus hidden in the Figure 16.

Here, the inner edging 72 of the roof collar is attached to the window frame 2 and the skirt portion 71 is attached to the slats 12 and counter-slats 13 by means of staples, but it is also possible to use an adhesive. As can also be seen, the upper and lower members 73, 74 of the collar are made of a flat material, while the side members 75 of the skirt are made with an excess of material to allow following the contour of the slats 12 and filling the entire I walk down the membrane 14 between slats. This excess material is normally provided by making the side members of the collar under a roof of a folded material, but it is also possible, of course, to use a material that can be stretched, being of an elastic or plastic nature.

An embodiment of the lower part of a side member of an indoor collar according to the invention is shown in Figure 17, and the assembly of a collar as such is shown in Figure 18. As can be seen, the skirt here is composed of Two parts; an outer part 714 of a folded material, such as the prior art collars, and an inner part 715 of a straight material, which includes the inner edging 72. In this embodiment, the inner part has a width measured perpendicular to the inner edging of approximately 10 cm and the outer part has a width of approximately 15 cm; Both respective widths can be varied, for example for adaptation to different installation situations, different window sizes and differences in the roof structure.

The internal and external parts are here connected to each other by means of an adhesive, but depending on the material used for the indoor collar they can also be interconnected by sewing or welding,

or by means of adhesive tape.

On the inner edging 72, the roof collar 7 is preferably provided with an adhesive suitable for attaching the collar to the window frame 2. As shown in Figure 17, this adhesive is preferably protected by a cover strip 76 in the state of delivery, Figure 17 showing the inner side of the side member intended for use on the left hand side of the window.

When the collar is mounted under a roof 7, the cover strip is first removed from the upper member 74, which is then attached to the lower member of the window frame 2. As can be seen in Figure 18, the lower member includes a tongue 721 which is projected on the inner edge 72 and that is adapted to be folded around the corner of the window frame. The internal trim of the side member 75 is preferably folded slightly backwards or downwards to allow the tongue to be attached to the window frame.

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The side member, which is provided with a similar tongue 722, as seen in Figure 17, is then attached to the side member of the window frame in a similar manner. This results in the two tabs overlapping each other, which provides excellent water and wind tightness in the corner of the window.

The upper member 73 of the ceiling collar is preferably made in the same manner as the lower member 74 and subsequently attached to the lateral member such that the tongues thereon overlap the lateral members. Consequently, the only difference between the top and bottom of the collar is the direction of folding, which should be arranged with the fold openings facing down in the assembled state to allow optimal drainage. To ensure that the collar is oriented correctly, it may be provided with an indication that shows, for example, the intended direction of drainage or which end must be arranged at the top of the window.

In this regard, it should be noted that, even when a satisfactory tightness of the structure could be achieved with a different order of attachment, the order described above ensures that the overlays are consistent with the natural flow direction of the water that runs over the surface of the under roof. and, therefore, provides optimum sealing.

In the embodiment shown in Figures 17 and 18, the side members 75 of the collar 7 are made with a strip 77 that extends in the direction of the side member length a short distance from the inner edging. This strip is intended to make the collar material bend more easily and / or more precisely. Thus, the strips facilitate the application of the collar, wherein the outer part 714 should preferably extend substantially flat against the under roof, while the inner edging 72 should abut the outer side of the window frame 2 and, therefore, , be arranged substantially perpendicular to the outer part in the assembled state. The strip 77 is preferably provided in the form of a relief in the collar material, but it could also be a weakened section or a strip of material added to the collar material. Similar strips could be used on / on the upper and / or lower members of the indoor collar.

As is known from the prior art, the folding of the outer part 714 of the lateral members 75 could be fixed with a strip or tape running in the longitudinal direction of the lateral member, but the connection to the straight internal part 715 a It will often be enough to hold it in place during attachment to the window frame.

A fixation of the folding at the outer edge can be advantageous to ensure that the outer part of the collar does not move. This could be done, for example, by providing a spot weld 78 on each of the folded sections of the fold, as indicated in Figure 17, or at least some of these. When the excess material provided by the folding must be used, these connections can simply be broken one by one, and the individual connection should preferably be made such that it can be torn by hand without causing substantial damage to the collar material. The use of individual connections has the additional advantage that excess material can be provided only where it is really required. Where excess material is not needed, the connections are simply left intact. This means that the finished construction is more organized and that the risk of noise caused by vibration is minimized and that the collar is lost due to wind breakage. Alternatives to spot welding are drops of adhesive or glue, staples, stitches, rivets, or similar elements.

It is emphasized that, even when only a simple embodiment of the collar is shown and described here, the characteristics thereof are not necessarily dependent on each other and, therefore, can be used independently, being an example of spot welding 78, which they can be used on any folded collar, and the overlapping tongues 721, 722, which can also be used on an unfolded collar.

Claims (16)

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one.

An insulating frame (4, 5) for a roof window mounted on an inclined roof structure of a building, comprising upper, lower and lateral members, each including an insulating member (43, 55, 57), and a plurality of connector supports (41a, 41b, 42), said insulating frame defining an internal opening adapted to surround the frame (2) of the roof window and said insulating frame having an inner side intended to be oriented towards the interior of the building and an outer side intended to be oriented outwardly, and each frame member having an inner side facing the inner opening and an outer side facing outward from the inner opening, in which the length and / or width of the inner opening they vary on the height of the insulating frame perpendicular to the plane defined by the frame members, such that, on the outer side, the length and width of the internal opening correspond substantially to the corr spontaneous external dimensions of the roof window, while on the inner side, the length and / or width of the internal opening is / are smaller than the corresponding external dimensions of the roof window, characterized in that:

This comprises a first set of connector supports (41a, 41b) and a second set of connector supports (42), said first set of connector supports being adapted to connect the insulating frame (4, 5) to the roof structure and extend over at least half of the length of at least two frame members forming opposite sides of the insulating frame, and said second set of connecting brackets connecting the side members to the upper and lower members of the insulating frame.

2.

An insulating frame according to claim 1, wherein each of the connecting supports (41a, 41b) of the first set comprises a flange portion (410) projecting outwardly from the internal opening on the outer side of the insulating frame and which is adapted to be connected to the roof structure.

3.

An insulating frame according to any of the preceding claims, in which the connecting supports (41a, 41b) of the first set are connected to the external sides of the insulating members (43).

Four.

An insulating frame according to claim 2 or 3, wherein the flange portion (410) is adapted to be connected to slats (12) of the roof structure, preferably having openings (413, 513) or weakened areas through which can drive a nail or screw, and / or being completely or partially interrupted in the positions intended for mounting brackets used to secure the roof window to the roof structure.

5.

An insulating frame according to any one of the preceding claims, in which the connecting brackets (42) of the second set are pressurized to the insulating members (43, 55, 57) or members attached thereto, preferably to the connecting brackets ( 41a, 41b) of the first game, even more preferred to at least one lug

(423) projecting from a connector support (42) of the second set, being in engagement with an opening (418) provided on a connector support (41a, 41b) of the first set.

6.

An insulating frame according to any of the preceding claims, in which the connecting supports (42) of the second set are preferably made as an angular support, in which each leg is, in turn, of an angular shape in cross section.

7.

An insulating frame according to any of the preceding claims, in which at least one frame member (43) is provided with a compressible layer or member (48) on its outer side, said layer or member being preferably elastic.

8.

An insulating frame according to any of the preceding claims, comprising an outer part in which the length and width of the internal opening correspond substantially to the corresponding external dimensions of the roof window, and an inner part in which the length and / or width of the internal opening is / are smaller than the corresponding external dimensions of the roof window, the transition between the outer part and the inner part being abrupt such that a projection (44, 54) is formed on the side internal frame.

9.

An insulating frame according to claim 8, characterized in that said projection (44, 54) is provided with a projection (45) projecting towards the outer side of the insulating frame and which is adapted to project into a groove (23) in the inner side of the frame (2) of the roof window, said projection being preferably wedge-shaped and being located on the inner side of the shoulder (44, 54), its base preferably occupying approximately half of the width of the shoulder.

10.

An insulating frame according to any of the preceding claims, in which at least one section

(431) of at least one end of at least part of the insulating members (43, 55, 57) is oblique, such that the inner side of the insulating member is longer than its outer side.

eleven.

An insulating frame according to any of the preceding claims, in which at least part of the frame members are provided with a longitudinal groove (49) extending from the inner side to the outer side.

12.

An insulating frame according to any of the preceding claims, in which the connecting supports (41a, 41b, 42) of the first and / or second set are made of a material selected from the group consisting of:

12 steel, stainless steel, elastic steel, aluminum, other metals, plastic, ceramics, fiberglass, composites and combinations thereof. 13. An insulating frame according to any of the preceding claims, wherein the insulating members (43, 55, 57) are made of a dimensionally stable material, the material being preferably selected from the 5 group consisting of: extruded polyethylene, other polymeric foams, mineral wool, wood fibers bonded with glue, composite materials and combinations thereof. 14. An equipment for constructing an insulating frame according to any of claims 1-13, which includes a plurality of insulating members (43, 55, 57), a first set of connecting brackets (41a, 41b) and a second set of brackets connectors (42), said first set of connector supports being adapted to connect the frame to 10 the roof structure and extend over at least half the length of at least two frame members that form opposite sides of the insulating frame, and said second set of connecting brackets connecting the side members to the upper and lower members of the insulating frame 15. Equipment according to claim 14, which further includes at least one compressible member (48) adapted to be attached to an outer surface of an insulating member and / or at least one stiffening member 15 (51) adapted to be attached to an insulating member. 16. A method of mounting a roof window on an inclined roof structure of a building comprising a roofing material, a slat structure, a beam support arrangement and a low ceiling, said method including the steps of: A) provision of an insulating frame according to any of claims 1-13, 20 B) realization of an opening in the roof structure with a length and width corresponding substantially to the external dimensions of the insulating frame, C) placement of the insulating frame in the opening of the roof structure, D) placement of the roof window frame in the internal opening of the insulating frame, and E) fastening the roof window to the roof structure. 25 13