AU2013100157A4 - Insulation system for a building - Google Patents

Insulation system for a building Download PDF

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Publication number
AU2013100157A4
AU2013100157A4 AU2013100157A AU2013100157A AU2013100157A4 AU 2013100157 A4 AU2013100157 A4 AU 2013100157A4 AU 2013100157 A AU2013100157 A AU 2013100157A AU 2013100157 A AU2013100157 A AU 2013100157A AU 2013100157 A4 AU2013100157 A4 AU 2013100157A4
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Australia
Prior art keywords
insulation
reflective
products
insulation product
product
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Ceased
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AU2013100157A
Inventor
Silvia Hall
Jason Hawley
Michael Stoopman
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GREEN INSULATION Pty Ltd
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GREEN INSULATION Pty Ltd
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Priority to AU2013100157A priority Critical patent/AU2013100157A4/en
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Abstract

- 1 The present invention is a system for insulating the roof, walls and floor of a building. The system includes a first insulation product having at least one reflective surface 5 spaced apart from a second insulation product having at least one reflective surface wherein in use the two products are positioned to substantially overlap and are spaced from each other between 10mm and 400mm. The at least one reflective surface of the products oppose each other and border the space between the products. The insulation system increases the thermal resistance and improves the 0 insulation in the building. - 21

Description

- 1 INSULATION SYSTEM FOR A BUILDING FIELD OF INVENTION 5 The present invention relates to insulation of a building and in particular in roofs, walls and floors. BACKGROUND OF THE INVENTION Insulation is installed in roofs and walls of houses, offices, warehouses and 0 other buildings to minimize heat exchange between the internal living space and outside of the building. In cold or hot climates, the transfer of radiant heat (and convective and conductive heat) is reduced with insulation positioned on or between the joists in the roof space and between the inner and outer walls. Reducing heat transfer reduces the need to use energy to cool or heat the living space within a 5 building. The types of materials used to provide insulation in roofs and walls includes bulk insulation such as batts and blankets made of fiberglass, rockwool, polyester and natural wool; loose-fill insulation such as cellulose fibers, natural wool, and granulated rockwool; boards such as extruded polystyrene boards; reflective 0 insulation such as foil with a closed air bubble layer and expandable concertina-style foil. Different insulation materials have different thermal resistance or how much the material inhibits heat transfer. The thermal resistance of a material is termed their R value. There are two types of R values. System R value is the thermal 25 resistance value of the installed insulation material working in conjunction with the building materials and air spaces. Product R value is the R value of the product on its own. To improve the insulation within a building and maximize the benefits of insulation, a current trend is to use a bulk insulation material such as fiberglass batts 30 and increase the thickness of the insulation material. Increasing the thickness of the insulation material is applicable to only some types of insulation materials to provide an effective increase in the R value. An alternative approach has been to develop new insulation materials that provide improved R values. These approaches have met with limited success.
-2 OBJECT OF THE INVENTION It is an object of the present invention to provide an alternative solution to overcome at least in part one or more of the above mentioned disadvantages. 5 SUMMARY OF THE INVENTION The present invention arises from an alternative approach to increasing the effective R value by considering using two separate insulation products, designing each of the insulation products and arranging them relative to each other to provide 0 a cooperative insulation effect. In one aspect the present invention broadly resides in an insulation system for a building including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the two products are positioned to substantially overlap and are spaced from each 5 other, the at least one reflective surface of the products oppose each other and border the space between the products. Preferably the at least one reflective surface is a foil surface. The first and or second insulation products preferably have a second reflective side surface. O The first and second insulation products can be any suitable product including a bulk insulation product, a board insulation product and a reflective cell insulation product. More preferably the first insulation product is reflective cell insulation. With a roof insulation system the first insulation product is adjacent the roof and the first insulation product is preferably reflective cell insulation. 25 The insulation system can preferably be used to insulate roofs, walls and floors of commercial, residential and other buildings. In another aspect the invention broadly resides in an insulation system for a roof, including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the 30 first insulation product is positioned beneath the roof and the second insulation product is positioned above a ceiling; the two products substantially overlap and are spaced from each other, the at least one reflective surface of the products oppose each other and border the space between the products.
-3 In a further aspect the invention broadly resides in an insulation system for a wall, including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the first insulation product is positioned adjacent an external wall and the second 5 insulation product is positioned adjacent an internal wall; the two products substantially overlap and are spaced from each other, the at least one reflective surface of the products oppose each other and border the space between the products. In a further aspect the invention broadly resides in an insulation system for a 0 floor, including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the first insulation product is positioned beneath the floor and the second insulation product is positioned on top of the bearer; the two products substantially overlap and are spaced from each other, the at least one reflective surface of the products 5 oppose each other and border the space between the products. In one embodiment the second insulation product can extend between the floor joists and pass over the floor joists. In another embodiment the second insulation product can extend between the floor joists and pass under the floor joists In another aspect the insulation system for a building including a first 0 insulation product having at least one reflective surface and a second insulation product having at least one reflective surface, wherein in use the two products are positioned to substantially overlap and are spaced from each other between 10mm and 400mm, the at least one reflective surface of the products oppose each other and border the space between the products. 25 With a roof insulation system, the spacing between the first insulation product and the roof is preferably between 1mm and 150mm and more preferably approximately 40mm. The spacing between the first insulation product and the second insulation product is preferably between 10mm and 400mm and more preferably between 70mm and 250mm depending on the construction. The spacing 30 between the second insulation product and a ceiling is preferably between 10mm and 3000mm and more preferably between 800mm and 2000mm depending on the construction. With a wall insulation system, the spacing between the first insulation product and an external wall is preferably between Omm (abutting) and 100mm and more -4 preferably approximately 10mm. The spacing between the first insulation product and the second insulation product is preferably between 10mm and 100mm and more preferably approximately 50mm. The spacing between the second insulation product and an internal wall is preferably between Omm (abutting) and 100mm and 5 more preferably approximately 10mm. The first and second insulation products can be the same or different insulation material type. The insulation system can include additional insulation products wherein adjacent insulation products are spaced from each other and have opposing 0 reflective surfaces. The insulation system can include three or more insulation layers wherein the insulation product in each layer is spaced from each other and have opposing reflective surfaces. The insulation products in each layer can be the same or a different insulation 5 material type. The insulation products are preferably selected from reflective air bubble insulation sheeting, foil faced bulk insulation, reflective foam board and reflective sarking sheeting. Reflective air bubble insulation sheeting preferably includes a multi-layered product having at least one reflective foil outer layer and one or more 0 air bubble layers such as the insulation products sold under the trade mark REFLECTA-CELL, REFLECTA GUARD, REFLECTA SHED and REFLECTA BREAK. In another aspect the invention broadly resides in a method of installing an insulation system as described above in a roof, including 25 positioning a first insulation product between 1mm and 150mm from the roof; positioning a second insulation product between 10mm and 400mm below the first insulation product and between 10mm and 3000mm above a ceiling; wherein the at least one reflective surface of the first insulation product faces downward and towards the second insulation product and the at least one reflective surface of the 30 second insulation product faces upward and towards the first insulation product. In another aspect the invention broadly resides in a method of installing an insulation system as described above in a wall, including positioning a first insulation product between Omm and 100mm from an external wall; -5 positioning a second insulation product between 10mm and 100mm from the first insulation product and between Omm and 100mm from an internal wall; wherein the at least one reflective surface of the first insulation product faces towards the second insulation product and the at least one reflective surface of the second 5 insulation product faces towards the first insulation product. Preferably the positioning of the first and second insulation products provides a cooperative insulation effect in reducing heat transfer. More preferably the positioning of the first and second insulation products provides a synergistic insulation effect in reducing heat transfer to a level that is more than the combined 0 effect of the first and second insulation products when they are used separately. In another aspect the invention broadly resides in an insulation assembly for a building, including two or more insulation products as described above and positioned relative to each other so that each insulation product has a reflective surface that faces an adjacent insulation product and spaced apart by an air gap. 5 The insulation products are preferably arranged to form a multipart and in-situ formed insulation assembly. Apart from the insulation provided individually by each of the products, the arrangement of the products to form the assembly preferably provides additional insulation. In relation to all aspects, the opposing reflective surfaces of the first and 0 second insulation products border the space between the first and second insulation products. The features described with reference to one aspect of the invention apply to other aspects of the invention. 25 BRIEF DESCRIPTION OF THE DRAWINGS In order that the present invention can be more readily understood reference will now be made to the accompanying drawings which illustrate a preferred embodiment of the invention and wherein: Figure 1 is a diagrammatic view of two reflective air bubble layers positioned 30 between the roof and ceiling; Figure 2 is a diagrammatic view of reflective air bubble layer and reflective sarking sheeting positioned between the roof and ceiling; Figure 3 is a diagrammatic view of reflective air bubble layer and reflective foam board positioned between the roof and ceiling; -6 Figure 4 is a diagrammatic view of reflective air bubble layer and reflective bulk insulation positioned between the roof and ceiling; Figure 5 is a diagrammatic view of two reflective air bubble layers positioned between the roof and a suspended ceiling; 5 Figure 6 is a diagrammatic view of two reflective air bubble layers and a reflective bulk insulation positioned between the roof and a suspended ceiling; Figure 7 is a diagrammatic view of two reflective air bubble layers and a reflective foam board positioned between the roof and a suspended ceiling; Figure 8 is a diagrammatic view of two reflective air bubble layers and a 0 reflective coating positioned between the roof and a suspended ceiling; Figure 9 is a diagrammatic view of a reflective air bubble layer and two reflective bulk insulations positioned between the roof and a suspended ceiling; Figure 10 is a diagrammatic view of two reflective air bubble layers positioned between an external wall and an internal wall; 5 Figure 11 is a diagrammatic view of a reflective air bubble layer and bulk insulation positioned between an external wall and an internal wall; Figure 12 is a diagrammatic view of two reflective sarking sheeting positioned between an internal wall and an external wall; Figure 13 is a diagrammatic view of a reflective bulk insulation and reflective 0 sarking sheeting positioned between an internal wall and an external wall; Figure 14 is a diagrammatic view of two reflective bulk insulations positioned between an internal wall and an external wall; and Figure 15 is a diagrammatic view of two reflective air bubble layers positioned between a floor and floor bearers. 25 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A number of preferred embodiments will now be described with reference to the figures. The described preferred embodiments are not an exhaustive example of the invention and are described to illustrate the different types of embodiments. 30 The insulation system described as the preferred embodiment includes an arrangement of at least two reflective insulation products that are spaced apart from each other and have their respective reflective surface face each other. In this arrangement, an air gap is formed between the two reflective surfaces of the adjacent reflective insulation products and the arrangement provides a cooperative -7 (and synergistic) effect with respect to the reflective insulation products in increasing thermal resistance and inhibiting heat transfer. With reference to Figure 1, there is shown a roof section with a roof 10, a ceiling 11 and roof purlins 12. Between the top of the roof purlins 12 and the roof 10, 5 there is positioned a reflective air bubble sheeting 13. The reflective air sheeting 13 is held in position by the purlins 12. Between the bottom of the roof purlins 12 and the ceiling 11 there is positioned a second reflective air bubble sheeting 14. The reflective air bubble sheeting 13, 14 have a reflective foil layer on each side. The spacing between the roof and reflective air bubble sheeting 13 is approximately 0 40mm. Where the reflective air bubble sheeting 13 abuts the roof purlins 12 and the roof 10, there is a minimum gap and where the reflective air bubble sheeting 13 is between the roof purlins 12 there is a larger gap. The spacing between the reflective air bubble sheeting 13 and the reflective air bubble sheeting 14, is approximately 110mm or greater depending on the height of the roof 10 above the ceiling 11. The 5 reflective air bubble sheeting 14 substantially abuts or lies on top of the ceiling 11. The sheeting 14 can act as a ceiling or sit on the ceiling. The reflective air bubble sheeting 13,14 have a reflective foil surface on both sides with an air bubble plastic layer separating the two foil layers. Both reflective air bubble sheeting 13 and 14 have a reflective foil surface that faces each other. In 0 other words, the lower surface of reflective air bubble sheeting 13 is made of reflective foil and faces the upper reflective foil surface of reflective air bubble sheeting 14. In this way reflective air bubble sheeting 13 substantially overlaps air bubble sheeting 14. With this arrangement, an air gap between reflective air bubble sheeting 13 and reflective air bubble sheeting 14 is formed. Consequently, there are 25 a number of air gaps arranged in the insulation system including an air gap between the roof and reflective air bubble sheeting 13, an air gap within reflective air bubble sheeting 13, an air gap between reflective air bubble sheeting 13 and air bubble sheeting 14 and an air gap within reflective air bubble sheeting 14. The layered effect of the two reflective air bubble insulation sheeting 13, 14 provides an 30 enhanced thermal resistance and increased insulation. Reflective air bubble sheeting 13, 14 cooperate to provide the enhanced thermal resistance and increased insulation and acts like a multipart and in-situ formed insulation assembly. The reflective air bubble sheeting 13, 14 that is the insulation products sold under the -8 trademarks REFLECTA-CELL, REFLECTA GUARD, REFLECTA SHED and REFLECTA BREAK. While the thermal resistance factor or R value for a metal or tiled roof is approximately 0.2, the R value after the installation of a layer of reflective air bubble 5 insulation sheeting is between 2.4 and 3.00 and the R value of the insulation assembly using two arranged layers of reflective air bubble insulation sheeting is around 6.5 to 7.0. The R value for the insulation assembly is more than twice the value for the single layer of reflective air bubble insulation sheeting. The R values vary as a result of the size of the roof space and the distance between the roof, 0 insulation layers and the ceiling. With reference to Figure 2, there is shown a similar arrangement as was shown in Figure 1, except that reflective sarking sheeting 21 is used as the reflective insulation product adjacent the ceiling and below the reflective air bubble insulation sheeting 22. The spacings are approximately the same as in the assembly shown in 5 Figure 1. With reference to Figure 3, there is shown an insulation assembly 30 formed in the roof space. The insulation assembly 30 comprises an upper reflective air bubble insulation sheeting 31 held in place by the roof purlins 32. The lower insulation product is a foam board 33 with a foil upper surface. The foiled foam 0 board 33 rests on the ceiling. With reference to Figure 4, there is shown an alternative insulation assembly 40 comprising an upper fibrous insulation layer 41 having a lower foiled surface. There is also a lower reflective air bubble insulation sheeting 42 adjacent the ceiling 43. 25 With reference to Figure 5, there is shown an insulation assembly 50 that is very similar to the insulation assembly shown in Figure 1. The major difference is that the two reflective air bubble insulation sheeting 51, 52 are located within a suspended ceiling and the lower reflective air bubble insulation sheeting 52 is spaced apart from the suspended ceiling 53. The spacing between the lower 30 reflective air bubble insulation sheeting 52 and the suspended ceiling 53 is approximately 600mm. Because there is an air space formed within the suspended ceiling, a further insulation layer can be positioned so that the insulation assembly consists of the combination of three separate insulation products.
-9 In Figure 6, the insulation assembly is similar to that disclosed in Figure 5 except that a foil sided fibrous batt 61 lays on the ceiling. Similarly, in Figure 7, the insulation assembly 70 has two reflective air bubble insulation sheetings 71, 72 and a foam insulation board 73 having an upper foiled 5 surface and lying on top of the ceiling. In Figure 8, there is again a similar arrangement with the two reflective air bubble insulation sheetings 81,82 positioned below the roof 80 and above the ceiling 84 and a further reflective coating 83 placed on the ceiling 84. Figure 9 shows another alternative to the insulation assembly 90 by having a 0 reflective air bubble insulation sheeting 91 adjacent the roof 92. There is also a fibrous batt insulation 93 with a lower foil face located below the reflective air bubble insulation sheeting 91. There is a further fibrous batt 94 with an upper foil faced surface located on the suspended ceiling 95. With reference to Figures 10 to 15, there is shown an insulation assembly 5 positioned between external and internal walls. In Figure 10, there is an insulation assembly 100 comprising a reflective air bubble insulation sheeting 101 adjacent the internal surface of the external wall 103 and another reflective air bubble insulation sheeting 102 adjacent the internal surface of the internal wall 104. The spacing between the external wall and the 0 reflective air bubble insulation sheeting 101 is approximately 10mm. The spacing between the reflective air bubble insulation sheeting 101 and the reflective air bubble insulation sheeting 102 is approximately 50mm. The spacing between the reflective air bubble insulation sheeting 102 and the internal wall 104 is approximately 10mm. With reference to Figure 11, there is a similar arrangement where the 25 insulation assembly 110 has a reflective air bubble insulation sheeting 111 adjacent the internal surface of the internal wall 113 and on the internal surface of the external wall 114 there is a fibrous batt 112 with a foil outer surface. Figure 12 is very similar to Figure 10 and instead of reflective air bubble insulation sheeting, there is reflective sarking sheeting 121,122 positioned against 30 the internal side of the external wall 123 and the internal side of the internal wall 124 respectively. With reference to Figure 13, there is a foil faced fibrous batt 131 positioned on the internal surface on an external wall 132 and a reflective sarking sheeting 133 positioned on the internal surface of the internal wall 134.
-10 With reference to Figure 14, there is a further embodiment where there are two foil faced fibrous batts 141,142 located on the internal surface on the external wall 143 and the internal surface of the internal wall 144 respectively. The foiled surfaces of the fibrous batts 141,142 face each other. 5 With reference to Figure 15, there is shown an insulation assembly 150 between the floor 151 and the floor bearer 152. The insulation assembly 150 includes a reflective air bubble insulation sheeting 153 above the floor joists 154 and below the floor 151. There is a second reflective air bubble insulation sheeting 155 positioned below the floor joists 154 and above the bearer 152. In this arrangement 0 there is formed an air gap between the two insulation sheetings 153,155. Each of the insulation sheetings 153,155 has a foiled outer surface that faces each other when they are arranged in position. In another embodiment, the second or lower insulation sheeting is positioned over the joists and then along the bearers. This embodiment occurs where the floor 5 joists are already in position such as in an existing house. In each of the embodiments where there is described a reflective air bubble insulation sheeting, the reflective air bubble insulation sheeting is the product sold under the trade mark REFLECTA-CELL. In each of the embodiments there is a reflective lower surface in the upper 0 insulation product and a reflective upper surface in the lower insulation product. ADVANTAGES The preferred embodiments of the present invention have the advantage that they can increase insulation to a structure by arranging separate insulation products 25 in a particular manner relative to each other. In these arrangements different insulation material types can be used to obtain a cooperative effect. VARIATIONS It will of course be realised that while the foregoing has been given by way of 30 illustrative example of this invention, all such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is herein set forth.
- 11 Throughout the description and claims of this specification the word "comprise" and variations of that word such as "comprises" and "comprising", are not intended to exclude other additives, components, integers or steps.

Claims (5)

1. An insulation system for a building including a first insulation product having at least one reflective surface and a second insulation product having at least one 5 reflective surface wherein in use the two products are positioned to substantially overlap and are spaced from each other between 10mm and 400mm, the at least one reflective surface of the products oppose each other and border the space between the products. 0
2. An insulation system for a roof, including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the first insulation product is positioned beneath the roof and the second insulation product is positioned above a ceiling; the two products substantially overlap and are spaced from each other, the at least one 5 reflective surface of the products oppose each other and border the space between the products; wherein the spacing between the first insulation product and the roof is between 1mm and 150mm, the spacing between the first insulation product and the second insulation product is between 10mm and 400mm, and the spacing between the second insulation product and a ceiling is between 10mm and 3000mm. 0
3. An insulation system for a wall, including a first insulation product having at least one reflective surface and a second insulation product having at least one reflective surface wherein in use the first insulation product is positioned adjacent an external wall and the second insulation product is positioned adjacent an internal 25 wall; the two products substantially overlap and are spaced from each other, the at least one reflective surface of the products oppose each other and border the space between the products; wherein the spacing between the first insulation product and an external wall is between Omm (abutting) and 100mm, the spacing between the first insulation product and the second insulation product is between 10mm and 30 100mm, the spacing between the second insulation product and an internal wall is between Omm (abutting) and 100mm. .
4. An insulation system for a floor, including a first insulation product having at least one reflective surface and a second insulation product having at least one -2 reflective surface wherein in use the first insulation product is positioned beneath the floor and the second insulation product is positioned on top of the bearer; the two products substantially overlap and are spaced from each other, the at least one reflective surface of the products oppose each other and border the space between 5 the products.
5. An insulation system as claimed in any one of claims 1 to 4, wherein the first and second insulation products are the same or different insulation material type selected from reflective air bubble insulation sheeting, foil faced bulk insulation, 0 reflective foam board and reflective sarking sheeting.
AU2013100157A 2013-02-15 2013-02-15 Insulation system for a building Ceased AU2013100157A4 (en)

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AU2013100157A AU2013100157A4 (en) 2013-02-15 2013-02-15 Insulation system for a building

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