INSULATION DEVICE FOR A LOFT OPENING

Description

Field of the Invention

[0001] The present invention relates to an insulation device and in particular, but not exclusively, to an insulation device for a loft opening.

Background of the Invention

[0002] Many buildings are provided with a pitched roof to allow water to flow off the roof. The pitched roof often creates a relatively large space between a ceiling of the uppermost floor of the building and the roof itself; such a space is commonly referred to as an attic or loft, and is often used as a storage area. Access to a loft is normally provided via an opening in the ceiling of the uppermost floor of a building and the opening is usually closable by means of a movable access door that is typically made of plywood or medium-density fibreboard (MDF).

[0003] Loft space in most buildings is provided with thermal insulation to prevent heat loss from the building through the roof. Insulating the loft reduces the amount of energy required to keep a building warm.

[0004] US2004/0050507A1 relates to an inexpensive lightweight reusable detachable insulating cover device for residential and commercial dwellings and similar heated structures. The inner-portion of the insulating pad fits inside of a typical entrance or window unit framing. The outer-portion of the insulating pad overlaps the window unit or entrance framing. The outer portion of the insulating pad is secured to the building wall structure surrounding the window or entrance framing by using Velcro Fasteners.

[0005] US2009/0277099A1 relates to an attic access apparatus comprising an access frame with sidewalls extending upward from a flange member and configured to extend upward into an attic opening between structural members forming the attic opening. An insulated lid drops into the access opening formed by the inner surfaces of the sidewalls and rests on the support flange. A seal member provides a seal between the lid and the access frame to prevent air movement between the lid and access frame.

[0006] WO02/36207A1 relates to a fire stopping device. The device includes a containment shell with a heat rupturable element and intumescent filler material arranged in the containment shell. When the intumescent filler material reaches its activation temperature, it expands with a force greater than the strength of the rupture element, thereby causing the rupture element to fail.

[0007] Whilst there are many products that can be used to insulate the main area of a loft space, loft openings are commonly left un-insulated allowing heat to escape from the interior of buildings through the loft openings. When heat escapes from the interior of a building in this manner, additional energy is required to compensate for the heat loss and maintain the interior of the building at a constant temperature.

Summary of the Invention

[0008] In accordance with one aspect of the present invention, there is provided an insulation device for a loft opening, the device comprising an insulating body portion adapted to fit within the loft opening and a skirt portion extending around at least a part of a periphery of the insulating body portion, wherein the skirt portion is adapted to be moveable relative to the insulating body portion, wherein the insulating body portion and the skirt portion are joined to one another by means of a stiffened seam which provides an axis about which the skirt portion may move relative to the insulating body portion and wherein the skirt portion has a pillow-like structure that is filled with an insulating material.

[0009] The insulation device of the present invention can be fitted into a loft opening to insulate the opening and the skirt portion can additionally exclude draughts that may arise around the periphery of the opening. The insulation of the opening substantially reduces heat transfer through the opening, whilst the exclusion of draughts serves to reduce heat transfer around- the periphery of the opening. The fact that the skirt portion is movable relative to the insulating body portion of the insulation device means that movement of the insulation device within the loft opening is permitted. If, for example, the loft opening is equipped with a closure, such as an access door, and the insulation device is attached to the closure, the ability of the skirt portion of the insulation device to move relative to the insulating body portion allows the insulation device to move with the closure as it is opened and closed.

[0010] The insulating body of the insulation device may be made of an insulating material; alternatively, in a preferred embodiment of the present invention, the insulating body has a pillow-like structure that is filled with an insulating material. The pillow-like structure of the insulating body provides flexibility in the arrangement of the insulation device within a loft opening. Since the pillow-like structure is deformable, the insulation device can take up the shape of the loft opening in such a way that gaps are avoided between the insulation device and the periphery of the loft opening. In other words, where the shape of a loft opening is not perfectly regular, any irregularities can be compensated by the pillow-like structure of the insulation device. A further benefit of a pillow-like structure is that the insulation device is not particularly dense, which makes it easy to handle and transport. A pillow-like structure is also less likely to cause damage to areas of the loft or ceiling in the vicinity of the loft opening during installation due to a lack of rigidity.

[0011] The advantage of a skirt portion with a pillow-like structure filled with insulating material is that the skirt portion has thermal insulation properties in addition to draught exclusion properties

[0012] Preferably, the skirt portion extends around the entire periphery of the insulating body portion. A skirt portion that extends around the entire periphery of the insulating body portion of the insulation device, rather than just around a part thereof, achieves more effective draught exclusion.

[0013] In a further preferred embodiment of the invention, the insulation device includes a fire retardant additive or a flame retardant additive, each of which enhances the fire safety characteristics of the insulation device by serving to prevent the spread of fire from a loft space into the interior of a building or from the interior of a building to the loft space.

[0014] The insulation device may be provided with a liner having thermal and/or fire retardant properties. Preferably, the liner has at least one perforation. The presence of at least one perforation in the liner reduces the weight of the liner; in some cases the inclusion of at least one perforation can also reduce the manufacturing cost of the liner. The liner may be a metal foil, for example. The liner preferably has a thickness in the range of 10µm to 5mm. This range provides a liner of sufficient thickness to achieve an acceptable level of thermal insulation and fire retardant capability whilst avoiding an excessive contribution to the overall weight of the insulation device.

[0015] The insulation material may be selected from any of cellulose, cellulose acetate, fibreglass, paper, cardboard, carpet, wool, polyester, mineral wool, shredded bank notes, foam, cotton, recycled clothing, polystyrene, or any combination thereof. A benefit of using all of these materials, either alone or in combination, is that they have good thermal insulation properties.

[0016] In a further preferred embodiment of the invention, the insulation device is provided with means for attaching the device to a closure for the loft opening. This enables the insulation device to be moved with a closure for the loft opening. It also ensures that the insulation device remains in a fixed position relative to the loft opening, which avoids the insulation device impeding the opening and closing of the closure, and achieves effective insulation of the opening and exclusion of draughts.

[0017] Further features and advantages of the invention will become apparent from the following description of preferred embodiments of the invention, given by way of example only, which is made with reference to the accompanying drawings.

Brief Description of the Drawings

[0018] 

Figure 1 shows a side view of an insulation device in accordance with a first embodiment of the present invention arranged in a loft opening;

Figure 2 shows a side view of an insulation device in accordance with a second embodiment of the present invention arranged in a loft opening;

Figure 3 shows a plan view of the insulation device of Figure 2;

Figure 4 shows a side view of the insulation device of Figure 2 arranged in a loft opening; and

Figure 5 shows a side view of an alternative insulation device.

Detailed Description of the Invention

[0019] Referring to Figure 1, there is shown an insulation device 10 having an insulating body portion 11 and a skirt portion 12 that extends around a periphery of the insulating body portion 11.

[0020] The insulation device 10 is shown arranged in a loft opening 13 that is defined by a frame 14, and is attached to a loft opening closure 15 in the form of an access door by attachment means 16. The attachment means 16 can include glue, sticky-backed plastic, double-sided adhesive tape, hook and loop fasteners, adhesive paste, staples, nails, screws or any other suitable form of attachment. The attachment means 16 can be temporary or permanent and are arranged approximately 1cm inside the periphery of the insulating body portion 11 but could be placed at any point on the insulating body portion 11 that provides a satisfactory attachment. By virtue of the attachment of the insulating device 10 to the access door 15, the insulating device can move with the access door 15 when it is opened and closed. In order to facilitate movement of the access door 15 in the loft opening 13 and allow insertion of the insulation device 10 into the loft, the insulation device 10 preferably has a slightly smaller top surface area than the area of the loft opening 13. For example, the length and width of the insulating body portion 11 could be between 0.5mm and 40mm less than the length and width of the loft opening 13.

[0021] It can be seen that the skirt portion 12 overlaps the periphery of the loft opening 13, so that it acts as a draught excluder and can block any gaps between the insulating body portion 11 and the periphery of the loft opening 13. The extension of the skirt portion 12 beyond the periphery of the loft opening 13 can be in the range of 1cm to 40cm. The skirt portion 12 is made of an insulating material so that, in addition to draught exclusion, it also provides some degree of thermal insulation. Tue skirt portion 12 is movable relative to the insulating body portion 11, so that the skirt portion 12 does not impede movement of the access door 15. As the access door 15 is moved upwards, for example, the skirt portion 12 is folded inwards towards the centre of the loft opening 13 so that it does not block the path of the access door 15. The skirt
portion 12 is joined to the insulating body portion 11 by means of a stiffened seam 17 that allows the skirt portion 12 to be moved easily relative to the insulating body portion 11.

[0022] The insulating body portion 11 has a pillow-like structure that is filled with an insulating material, such as cellulose, cellulose acetate, fibreglass, paper, cardboard, carpet (including recycled factory carpet waste and cleansed and recycled carpets), sheep or any other animal wool, polyester, mineral wool, shredded bank notes, foam, cotton, wool, recycled clothing or polystyrene (including expanded polystyrene), or any combination of these materials. The materials can be processed and sized according to specific insulation requirements. However, a density of filling in the range of 5 to 100 kg/m³ is generally required. In addition to a filling of insulating material, the insulating body portion 11 can contain fire and/or flame retardant additives or components. For example, the insulating body portion 11 can include a fire retardant liner (not shown) made of metal foil, or of any other suitable material. The thickness of the liner can be determined according to the required level of fire safety required. For example, a thickness in the ran e of 10µm to 5mm would be suitable for most applications. The liner can also include at least one perforation.

[0023] An outer layer or casing 18 of the pillow-like structure may be made of any suitable material, including cotton, polyester or other synthetic fibres. The casing 18 could additionally or alternatively be made of a waterproof material or treated with a waterproofing agent. Similarly, the casing could be treated with a fire retardant additive and/or a flame retardant additive. The casing could additionally have a pattern or show branding or other corporate marketing material to improve the appearance of the insulation device 10.

[0024] The pillow-like structure of the insulating body portion 11 provides some flexibility in the arrangement of the insulation device 10 in the loft opening 13 because the deformability of the pillow-like structure allows the insulation device 10 to take up, at least to some extent, the shape of the loft opening 13, even if that loft opening 13 has an irregular configuration. The pillow-like structure also provides an insulating body portion 11 that is relatively lightweight and easy to handle.

[0025] In Figure 1, the pillow-like structure is in the form of a box with upright side walls. However, any configuration of pillow-like structure can be used (as described below with reference to Figure 2, for example).

[0026] Furthermore, as an alternative to comprising a pillow-like structure, the insulating body portion 11 can be made of an insulating material and may be more rigid than a pillow-like structure. For example, the insulating body portion 11 could be made of a block of foam, such as a polyisocyanurate foam, polystyrene (including expanded polystyrene), mineral wool, wood, or polyurethane.

[0027] The size of the insulation device 10 will depend on the type of loft opening in which it is intended to be arranged; in particular, it will be appreciated that the width and length of the insulation device 10 will vary to take different loft openings into account. The thickness of the insulation device will also vary depending on insulation and/or fire safety requirements. For example, an insulation device 10 with a thickness in the range of 10cm to 350cm should suffice for most applications. It will be appreciated that, due to a large variation in the dimensions of loft openings, the size of the insulation device 10 will not always correspond exactly to a loft opening in which it is intended to be used. However, the skirt portion 12 of the insulation device 10 will serve to cover any gaps that arise due to a less than ideal fit of the insulation device 10 in the loft opening.

[0028] The insulation device 10 can be supplied as a complete article that simply needs to be inserted in a loft opening 13, and if desired, attached to a closure 15 for the loft opening 13. Alternatively, the insulation device 10 can be supplied as a kit of parts in which the insulating body portion 11 and the skirt portion 12 are provided separately and need to be attached to one another for use, for example by fasteners, such as buttons. In the case of a pillow-like structure, the casing 18 and filling for the pillow-like structure may be supplied separately so that a user can select how much filling to insert into the casing 18; the casing 18 could have an opening through which the filling could be inserted and that opening could be closable, either temporarily or permanently, by the user. The casing 18, which as mentioned above can be fire and/or flame retardant, could be provided alone for a user to fill with their own selected filling. For example, the casing 18 could be in the form of a fire and/or flame retardant bag.

[0029] It will be understood that the terms "fill", "filled" and "filling" include partial filling of the insulating body portion 10; a certain degree of compressibility of the insulating body portion 10 is required for effective insulation and draught exclusion.

[0030] Referring now to Figure 2, in an alternative embodiment of the present invention, there is provided an insulation device 20 in which the pillow-like structure of the insulating body portion 21 does not have a box configuration. The skirt portion 22 of the insulation device 20 has a pillow-like structure that is similar to the pillow-like structure of the insulating body portion 21, which improves the thermal insulation properties of the skirt portion 22.

[0031] Figure 3 shows a plan view of the insulation device 20 and in particular, the stiffened seam 27 about which the skirt portion 22 can move relative to the insulating body portion 21.

[0032] Figure 4 shows a side view of the insulation device 20 arranged in a loft opening 23 and attached to a closure 25 by means of attachment means 26. It can be seen that when the loft opening 23 is closed by means of the closure 25, the skirt portion 22 of the insulation device 20 blocks off gaps around the periphery of the loft opening 23 that are not totally covered by the insulating body portion 21 of the insulation device 20.

[0033] Figure 5 shows a side view of an insulation device 30 arranged in a loft opening 33 and attached to a closure 35. Although the insulation device 30 has a pillow-like structure, the skirt portion 32 of the insulation device 30 is not movable relative to the insulating body portion 31 of the insulation device 30. However, the skirt portion 32 still serves to block off gaps in the loft opening 33 that are not covered by the insulating body portion 31.

[0034] It will be appreciated that for all of the embodiments of insulation device 10, 20, 30 described above, the device 10, 20, 30 can be installed simply by placing it on top of a respective closure 15, 25, 35 for the loft opening. If necessary, the insulation device 10, 20, 30 can be attached, either temporarily or permanently, to the closure 15, 25, 35: Following installation, the presence of the loft insulation device 10, 20, 30 should not impede the opening and closing of the closure 15, 25, 35.

[0035] The above embodiments are to be understood as illustrative examples of the invention. Further embodiments of the invention are envisaged. For example, it has been described above that the insulation device 10, 20, 30 is installed in combination with a closure 15, 25, 35 for a loft opening 13, 23, .33. However, it is not necessary for the loft opening 12, 23, 33 to have a closure 15, 25, 35; instead the insulation device 10, 20, 30 could be installed directly in a loft opening 13, 23, 33.

[0036] It will be appreciated that a fire and/or flame retardant bag could simply be filled with an insulating material and if the filled bag were sufficiently large and compressible, it could cover a loft opening and also any gaps around the periphery of the opening without impeding movement of the closure of the loft opening.

[0037] A further alternative to the embodiments of the invention described above is an insulation device in the form of a bung with tapered sides. The bung could be inserted into a loft opening so that the tapered sides would seal the periphery of the loft opening. The bung could be made of rubber, foam or any other suitable material, or it could take the form of a bag with tapered sides filled with an insulating material.

[0038] It is to be understood that any feature described in relation to any one embodiment may be used alone, or in combination with other features described and may also be used in combination with one or more features of any other of the embodiments, or any combination of any other of the embodiments. Furthermore, equivalents and modifications not described above may also be employed without departing from the scope of the invention, which is defined in the accompanying claims.

Claims

1. An insulation device (10, 20) for a loft opening (13, 23), the device (10, 20) comprising an insulating body portion (11, 21) adapted to fit within the loft opening (13, 23) and a skirt portion (12, 22) extending around at least a part of a periphery of the insulating body portion (11, 21), wherein the skirt portion (12, 22) is adapted to be moveable relative to the insulating body portion (11, 21), wherein the insulating body portion (11, 21) and the skirt portion (12, 22) are joined to one another by means of a stiffened seam which provides an axis about which the skirt portion (12, 22) may move relative to the insulating body portion (11, 21), characterised in that the skirt portion (12, 22) has a pillow-like structure that is filled with an insulating material.

2. The insulation device (10, 20) of claim 1, wherein the insulating body portion (11, 21) is made of an insulating material.

3. The insulation device (10, 20) of claim 1, wherein the insulating body portion (11, 21) has a pillow-like structure that is filled with an insulating material.

4. The insulation device (10, 20) of claims 1 to 3, wherein the insulating material is selected from any of cellulose, cellulose acetate, fibreglass, paper, cardboard, carpet, wool, polyester, mineral wool, shredded bank notes, foam, cotton, recycled clothing, polystyrene or any combination thereof.

5. The insulation device (10, 20) of any preceding claim, wherein the skirt portion (12, 22) extends around the entire periphery of the insulating body portion (11, 21).

6. The insulation device (10, 20) of any preceding claim, further including a fire retardant additive.

7. The insulation device (10, 20) of any preceding claim, further comprising a fire retardant liner.

8. The insulation device (10, 20) of claim 7, wherein the liner includes at least one perforation.

9. The insulation device (10, 20) of claim 7 or 8, wherein the liner is made of metal foil.

10. The insulation device (10, 20) of claim 7, 8 or 9, wherein the liner has a thickness in the range of 10 micrometres to 5 millimetres.

11. The insulation device (10, 20) of any preceding claim, further including a flame retardant additive.

12. The insulation device (10, 20) of any preceding claim, further comprising means for attaching the device to a closure for a loft opening (13, 23).

Ansprüche

1. Isoliervorrichtung (10, 20) für eine Dachbodenöffnung (13, 23), wobei die Vorrichtung (10, 20) einen isolierenden Körperabschnitt (11, 21) umfasst, der dazu angepasst ist, in die Dachbodenöffnung (13, 23) und einen Schürzenabschnitt (12, 22) zu passen, der sich um mindestens einen Teil eines Umfangs des isolierenden Körperabschnitts (11, 21) erstreckt, wobei der Schürzenabschnitt (12, 22) dazu angepasst ist, relativ zu dem isolierenden Körperabschnitt (11, 21) beweglich zu sein, wobei der Isolierkörperabschnitt (11, 21) und der Schürzenabschnitt (12, 22) mittels einer versteiften Naht miteinander verbunden sind, die eine Achse bereitstellt, um die sich der Schürzenabschnitt (12, 22) relativ zu dem Isolierkörperabschnitt (11, 21) bewegen kann, dadurch gekennzeichnet, dass der Schürzenabschnitt (12, 22) eine kissenartige Struktur aufweist, die mit einem Isoliermaterial gefüllt ist.

2. Isoliervorrichtung (10, 20) nach Anspruch 1, wobei der Isolierkörperabschnitt (11, 21) aus einem Isoliermaterial hergestellt ist.

3. Isoliervorrichtung (10, 20) nach Anspruch 1, wobei der Isolierkörperabschnitt (11, 21) eine kissenartige Struktur aufweist, die mit einem Isoliermaterial gefüllt ist.

4. Isoliervorrichtung (10, 20) nach den Ansprüchen 1 bis 3, wobei das Isoliermaterial ausgewählt ist aus Cellulose, Cellulosecetat, Glasfaser, Papier, Pappe, Teppich, Wolle, Polyester, Mineralwolle, zerkleinerten Banknoten, Schaum, Baumwolle, recycelter Kleidung, Polystyrol oder einer beliebigen Kombination davon.

5. Isoliervorrichtung (10, 20) nach einem der vorstehenden Ansprüche, wobei die sich der Schürzenabschnitt (12, 22) um den gesamten Umfang des Isolierkörperabschnitts (11, 21) erstreckt.

6. Isoliervorrichtung (10, 20) nach einem der vorstehenden Ansprüche, ferner einschließend einen feuerhemmenden Zusatz.

7. Isoliervorrichtung (10, 20) nach einem der vorstehenden Ansprüche, ferner umfassend eine feuerhemmende Auskleidung.

8. Isoliervorrichtung (10, 20) nach Anspruch 7, wobei die Auskleidung mindestens eine Perforation einschließt.

9. Isoliervorrichtung (10, 20) nach Anspruch 7 oder 8, wobei die Auskleidung aus Metallfolie ist.

10. Isoliervorrichtung (10, 20) nach Anspruch 7, 8 oder 9, wobei die Auskleidung eine Dicke im Bereich von 10 Mikrometern bis 5 Millimetern aufweist.

11. Isoliervorrichtung (10, 20) nach einem der vorstehenden Ansprüche, ferner einschließend einen feuerhemmenden Zusatz.

12. Isoliervorrichtung (10, 20) nach einem der vorstehenden Ansprüche, ferner umfassend Mittel zum Befestigen der Vorrichtung an einem Verschluss für eine Dachbodenöffnung (13, 23).

Revendications

1. Dispositif d'isolation (10, 20) pour ouverture d'accès au grenier (13, 23), le dispositif (10, 20) comprenant une partie corps isolant (11, 21) conçue pour s'ajuster à l'ouverture d'accès au grenier (13, 23) et une partie jupe (12, 22) s'étendant autour d'au moins une partie d'une périphérie de la partie corps isolant (11, 21), dans lequel la partie jupe (12, 22) est conçue pour être mobile par rapport à la partie corps isolant (11, 21), dans lequel la partie corps isolant (12, 22) et la partie jupe (12, 22) sont jointes l'une à l'autre au moyen d'une couture raidie qui crée un axe autour duquel la partie jupe (12, 22) peut se déplacer par rapport à la partie corps isolant (11, 21), caractérisé en ce que la partie jupe (12, 22) a une structure en forme d'oreiller qui est remplie avec un matériau isolant.

2. Dispositif d'isolation (10, 20) selon la revendication 1, dans lequel la partie corps isolant (11, 21) est constituée d'un matériau isolant.

3. Dispositif d'isolation (10, 20) selon la revendication 1, dans lequel la partie corps isolant (11, 21) a une structure en forme d'oreiller qui est remplie avec un matériau isolant.

4. Dispositif d'isolation (10, 20) selon les revendications 1 à 3, dans lequel le matériau isolant est choisi parmi l'un quelconque de la cellulose, l'acétocellulose, la fibre de verre, le papier, le carton, la moquette, la laine, le polyester, la laine minérale, les billets de banque déchiquetés, la mousse, le coton, les vêtements recyclés, le polystyrène ou une combinaison quelconque de ceux-ci.

5. Dispositif d'isolation (10, 20) selon l'une quelconque des revendications précédentes, dans lequel la partie jupe (12, 22) s'étend autour de toute la périphérie de la partie corps isolant (11, 21).

6. Dispositif d'isolation (10, 20) selon l'une quelconque des revendications précédentes, comprenant en outre un additif ignifuge.

7. Dispositif d'isolation (10, 20) selon l'une quelconque des revendications précédentes, comprenant en outre une doublure ignifuge.

8. Dispositif d'isolation (10, 20) selon la revendication 7, dans lequel la doublure comporte au moins une perforation.

9. Dispositif d'isolation (10, 20) selon la revendication 7 ou 8, dans lequel la doublure est constituée d'une feuille métallique.

10. Dispositif d'isolation (10, 20) selon la revendication 7, 8 ou 9, dans lequel la doublure a une épaisseur dans la plage de 10 micromètres à 5 millimètres.

11. Dispositif d'isolation (10, 20) selon l'une quelconque des revendications précédentes, comprenant en outre un additif retardateur de flamme.

12. Dispositif d'isolation (10, 20) selon l'une quelconque des revendications précédentes, comprenant en outre un moyen pour fixer le dispositif à une fermeture pour ouverture d'accès au grenier (13,23).

Drawing