AU2017219035B2 - A roof spacer - Google Patents

Abstract

A ROOF SPACER ABSTRACT A roof spacer having a combination of an elongated spacer body with legs to space and allow insulation and with heads to mount a roofing material. The roof spacer can have the legs formed by a continuous but shaped elongated spacer body and the spacer heads attached at spaced locations across the crevices of the elongated spacer body formed by the continuous but shaped elongated spacer body and with a bridge section for overlying the crevices and an offset head portion forming a roof mounting peak. w w w w r~J '1 C / ~1 S r~J I 00 S, / *1 / 7 U, 0 '1 NM C m U, w w r~J U.' 00 U,

Description

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Field of the Invention

[001]The present invention relates to roof spacer and in particular to roof spacer that allows inclusion of insulation in a roof cavity below a roofing material.

[002] The invention has been developed primarily for use in/with a method and system for providing roof insulation in an improved and novel manner and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.

Background of the Invention

[003] The insulation business in Australia and overseas is seen as a huge potential growth area with room for development for more cost effective and innovative systems. This market is clearly driven globally by the threat of global warming and the overwhelming need to become energy efficient. The Australian and State Governments have instigated various guidelines and requirements for new domestic and commercial buildings providing opportunity for new products.

[004] Commercial requirements for use of insulation in commercial buildings has seen the introduction of the Section 'J" program by the Federal Government and adopted by State Governments. In the past no requirement existed to insulate the roof of commercial buildings it was a matter of choice by various Engineers, Architects and occupiers of the finished product.

[005]lnsulation is made from various fibres, (such as fibreglass, polyester or recycled cotton) and is used usually when laminated to an aluminum foil to provide an insulation product. Generally, the layering and inclusion of spaced air pockets also aid the heat insulation effect.

[006] This insulation product is placed under the roof at the time of installation of the roof. Other variations exist using predominately aluminum foil on its own or laminated to bubble wrap or foam. The fundamental problem for these products has been the claims of the R-value (the heat insulation factor) were not realistic, as the basic installation method employed resulted in the insulation being crushed and negating the claimed performance of the insulation as measured in the uncrushed condition.

[007] The Section" J" program has meant the minimum standard required for the future is R-3.2 in commercial roofs for most parts of Australia for summer. This requirement means design of the roof has to demonstrate that R-3.2 or greater has been achieved.

[008]In order to achieve the requirement various methods involving a number of spacer apparatuses have been put forward. Basically, the methods have increased the cost considerably and have made life very difficult for the roof installers, as the required methods are time consuming and difficult to carry out.

[009]Generally, the process undertaken to date is that the installers have to mount spacers on the purlins at spaced distances and providing a plurality of raised rails below which the insulation can be mounted with minimal crush. Any further foil layer can then be laid over such base. However, the spacers have legs that must have a fastener connected at an angle in order to get to the bottom of the leg and drill a screw at an angle due to the body structure above preventing any other approach. This results in the chance of missing the purlin or of being at too great an angle that the fastener bounces off the purlin and does not grab and does not fasten. The installers progress the job after the insulation is installed and need to mount roof supports onto the base so that the roofing material can be fixed to the rails and thereby fixed to the purlins.

[0010] The current method to fix a roof sheet to the battens or purlins has two basic choices.

• One is the roof sheet deck type where a screw is driven thru the sheet into the Batten or Purlin.

• The other is to use the roof sheet lock type whereby a clip bracket is screwed to the Batten or Purlin. The roof sheet is then pressed onto the clip locking the sheet in place. The advantage of the lock type there are no holes in the roof avoiding the possibility of leaks or corrosion of the roof screws. The lock method is predominately used in the commercial roof environment.

[0011] The inefficiency of the current system of roof fixing becomes apparent when in order to achieve the now required R-Ratings under Section J a spacer is required to avoid the crushing of the insulation.

[0012] This has the effect of putting the roof on twice as the requirement on a commercial install the roofer would roll out the safety mesh and fix the ends to the end purlins, roll out the foil faced insulation blanket on top of the mesh, screw the spacer to the purlin thru the insulation, and then lay and screw the roof sheet to the spacer. If the roof sheet lock system is being used the clip is screwed to the top of the spacer and then press the sheet on to the clip.

[0013] There are a number of current roof spacers on the market and vary in size from 65mm depth to 130 mm depth and lengths from 700mm to 1200 mm. None of the spacers incorporate a clip for the sheet lock method system, this could be due to the variation in the various roof profiles.

[0014] It can be seen that known prior art roof spacer has the problems of:

a) Putting roof on twice

b) Readiness of crushing insulation

c) Excessive labour

d) Extra components on the roof

e) Need to connect at an angle to purlin often resulting in missing purlin or deflection off purlin and non-attachment;

f) increased handling for insulation or roofing material

g) inefficiency and awkwardness in mounting roofing spacers over insulation base in that insulation blanket being 1200 mm wide and roof sheets being 700mm wide

[0015] The present invention seeks to provide roof spacer, which will overcome or substantially ameliorate at least one or more of the deficiencies of the prior art, or to at least provide an alternative.

[0016] It is to be understood that, if any prior art information is referred to herein, such reference does not constitute an admission that the information forms part of the common general knowledge in the art, in Australia or any other country.

Summary of the Invention

[0017] According to a first aspect of the present invention, roof spacer is provided by a roof spacer having a combination of an elongated spacer body with legs to space and allow insulation and with heads to mount a roofing material.

[0018] It can be seen that the invention of roof spacer provides the benefit of allowing ready inclusion of insulation and roofing material without double handling.

[0019] According to a second aspect of the present invention, roof spacer is provided by a roof spacer having the legs formed by a continuous but shaped elongated spacer body.

[0020] A roof spacer has the spacer heads attached at spaced locations across the crevices of the elongated spacer body formed by a continuous but shaped elongated spacer body and with a bridge section for overlying the crevices and an offset head portion forming a roof mounting peak.

[0021] It can be seen that the invention of roof spacer provides the benefit of providing a roofing spacer that can be readily altered before installation to provide a predetermined sized and spaced roof spacer that can match the location and insulation and roofing being used. It also means that the particular combination allows for a strong roof spacer while saving time, material and effort in construction.

[0022] According to a third aspect of the present invention, roof spacer is provided by a roof spacer having the heads shaped and spaced along a top surface of the body

[0023] It can be seen that the invention of roof spacer provides the benefit of providing a roofing spacer that matches profiles of different corrugated roofing materials.

[0024] In a particular form of the invention there is provided a roof spacer comprising an elongated spacer body having a combination of a plurality of spaced legs extending to a common plane as a lower part of the roof spacer and a plurality of spacer heads extending in opposite direction to the legs to a common plane as an upper part of the roof spacer, wherein a plurality of spaced roof spacers having a combination of an elongated spacer body with legs to space allow insulation to be extended therebetween with minimised crushing and with spacer heads of the plurality of spaced roof spacers spacing and allowing mounting of a roofing material thereto.

[0025] The invention also provides a method of mounting insulation and roofing including the steps of:

• Providing a plurality of preformed roof spacers each having a combination of an elongated spacer body with legs to space allow insulation to be extended therebetween with minimised crushing and with spacer heads of the plurality of spaced roof spacers spacing and allowing mounting of a roofing material thereto

* Mounting the insulation

* Fixing a plurality of roof spacers in parallel spaced arrangement over the insulation

• Layering the roofing material over the roof spacer

• Fixing the roofing material to the plurality of roof spacers.

[0026] Also the invention can provide an improved method of forming a roof spacer particular to a defined use including the steps of:

* Determining a roofing structure and thickness of insulation material required to determine leg spacing and a leg height;

• Determining a roofing profile to determine a spacer head profile, height and spacing;

• Providing a continuous strap of press shapeable metal

* Forming a spacer elongated body by shaping the metal strap to form open top legs of the predetermined leg height and leg spacing;

• Forming a plurality of shaped spacer heads each having a bridge section and a head portion having a height related to the determined profile and height;

• Mounting the shaped spacer heads to the shaped elongated spacer body with the bridge section overlying the crevices formed by the open top of the legs and fixing at spaced locations to provide the determined spacing between spacer heads.

[0027] Other aspects of the invention are also disclosed.

Brief Description of the Drawings

[0028] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which: Fig. 1 is a diagrammatic representation of a roof spacer for use in a method and system for providing roof insulation in an improved and novel manner in accordance with a preferred embodiment of the present invention; Fig. 2 is a perspective diagrammatic view of an elongated spacer body having legs forming a first part of a roof spacer in accordance with another preferred embodiment of the present invention; Fig. 3 is a perspective diagrammatic view of a spacer head forming a second part of the roof spacer in accordance with the preferred embodiment of Fig.2; Fig. 4 a diagrammatic representation of a roof spacer for use in a method and system for providing roof insulation in an improved and novel manner in accordance with a preferred embodiment of the present invention formed by the combination of the elongated spacer body of Fig 2 with the spacer head of Fig. 3 to provide a roof spacer matching a predetermined spacing P of the head portions and predetermined leg spacing 24; Fig. 5 is a diagrammatic in use illustration showing the use of the roof spacer of an embodiment of the invention in an improved and novel manner in accordance with a preferred embodiment of the present invention; Fig. 6 is a detail showing the alignment of the spacer heads with the crevices forming the leg of the elongated spacer body of Figs 2 and 3; Fig. 7 is a detail showing the mounting of the spacer heads on the elongated spacer body over the crevices forming the leg of Figs 4; Fig. 8 shows a detail of the spacer body of Fig 6 in an in-use position of Fig.4; Fig 9 is a block flow diagram of a method of forming a roof spacer in accordance with a preferred embodiment of the invention.

Description of Preferred Embodiments

[0029] It should be noted in the following description that like or the same reference numerals in different embodiments denote the same or similar features.

[0030] Referring to the drawings there is shown in general in Fig. 1 a method and system for providing roof insulation in an improved and novel manner.

[0031] In one form as shown in Figs 2, 3 and 4, the invention provides a roof spacer 11 having a combination of an elongated spacer body 12 with legs 24 to space and allow insulation 53 and with spacer heads 13 to mount a roofing material 54.

[0032] The roof spacer in one form is made by two bodies 12, 13 joined together offsite so as to provide an elongated roof spacer 11 that can be readily used on site having the heads shaped and spaced along a top surface of the body to allow roofing material 54 with spaced corrugations to be mounted and having a height due to the legs mounted on the roof structure to allow insulation of required thickness to be installed in a substantially non-crushed format.

[0033] The elongated spacer body 11 can be formed by a first part as a metal strap that is press formed into shape. That shape comprises a series of platforms 22 along the length spaced by crevices 23 formed by deformation or pressing of the strap to form substantially U-shaped legs. The spacing F of the legs is predetermined to match the required roofing corrugation when fixed on standard roof purlin spacing or if fixing along the purlin the spacing is determined to give strong base and holding of the insulation while minimizing crushing. The legs have inwardly pressouts 29 holding prelocated screws (not shown) in a vertical orientation within the leg 24 below the hole 35 of the bridge flange 32. The depth of the legs 24 are to allow different thicknesses of insulation.

[0034] The second part of the elongated spacer body 11 can be formed by shaped spacer heads 13 having a substantially Omega shaped body that can also be formed by press shaping strip of metal. The Omega shaped body can have an elevated head portion 33 with flanges 32, 34 extending from its base on opposite sides but with one flange 34 being extended to form a bridge 32. This bridge flange 32 includes a hole 35 for providing access for in use fixing (to be described further).

[0035] The spacing P of the elevated head portions 33 is predetermined to match the standard roof material corrugations. Generally roofing material is primarily flat but has spaced parallel corrugations to provide water flow channels. The height and shaping of the elevated head portion 33 are to allow different heights and shaping of corrugations and to allow ready clipping or connection at that point.

[0036] Also, the head portion 33 of the roof spacer 11 includes a clip 37 for engaging the shaping of corrugations of the roofing material. The shaping of spacer heads 33 includes a shaped flange 37 which provides a clipping action of the shaping of corrugations of the roofing material 54 to form the fixing of the roofing material to the roof spacer.

[0037] Referring to Figs. 5 there is shown a roof structure 50 of parallel roof beams 51. This forms the integral building structure with the walls and provides a support for the internal ceilings. On the roof structure running at right angles are a set of parallel spaced purlins 52. These are provided to provide the necessary smaller spacing for supporting and fixing the roofing material and related roof insulation. Clearly if metal roofing material 54 was simply fixed to the purlins then only a thin metal material separates the internal building volume to the outside environment. Over the great expanse of a commercial roof on a commercial building this results in a dramatic change of internal environment by small variations in external environment. It also allows extremes of heat and cold and extremes of condensation and humidity. Therefore, it is critical to have a roof volume filled with insulation. This insulation is most effective if it includes air gaps and provides a layering insulation effect. Further it is more effective if surrounded by reflective foil on top and bottom to reflect the outside environment and to retain and stabilize internal environment with a thermal insulation therebetween.

[0038] To the I-beams forming the roof purlins 52 is mounted a wire mesh 55 on which is placed the insulation layer 53. It is then that there is connected a roof spacer 11 over the insulation layer 53 that can have foil on top and bottom surfaces. The legs 24 of the roof spacer 11 is attached to the roof purlins by screwing prelocated screws (not shown) held by inwardly pressouts 29 directly vertically down through the hole 35 in the bridge 32 passing over the top of the leg 24 and into the purlin 52. In this way, there is maximum connection strength as at directly into the purlin and zero chance of miss connecting. The corrugated roof 54 having matching spacings of corrugations to the spacing P of the head portions 33 allows ready alignment and by clips 37 into receiving portions in the underside of the corrugations of the corrugated roof material 54.

[0039] Referring to Figs 6 to 8 there is shown the details of the connection of the two bodies 11, 12 to form the elongated spacer body 11. In particular the elevated head portion 33 is offset to the crevice 23. Also to return strength to the folded metal of the elongated spacer body 12 with folded legs 24 the bridge portion 32 having a diameter C is able to fully straddle the crevice 23 having width at the top of Y. The bridge fits into deformations 26, 27 of the continuous platform 22 on the elongated body 12 and the deformations 26, 27 are on either side of the crevice 23. A flange 34 on the other side of the elevated head portion 33 of the spacer head 13 fits into a spaced deformation 28 further along the continuous platform 22. It can be seen that by fixing the bridge 32 into the deformation 26 and fixing the flange 34 at the other end of the spacer head 13 to the deformation 28 then there is a strengthening of the leg 24 and both sides of the elevated spacer head 33 is fully supported on the platform 22. Therefore strength, rigidity and integrity is ensured. Still further the hole 35 allows ready application directly vertically through to base of leg 24 of a fastening means comprising prelocated screws (not shown) held by inwardly pressouts 29. And still further the clip 37 on the elevated head portion 33 allows ready connection to the corrugated roofing material 54.

[0040] Another substantial advantage is that due to the manufacturing method of this embodiment there can be predetermined thickness of insulation 53, predetermined spacings P of the corrugations P of the corrugated roof material 54 and predetermined fixing spacings F of the legs. As a response and offsite the roof spacer 11 can be formed with required depth of legs 24, appropriate dimensions of crevice 23 with dimensions Y. To match the required spacing of elevated spacer heads 33 there are variabilities of spacer head dimensions B and C to interfit with selected dimensions X, Y and Z of the elongated spacer body 12 to form the required roof spacer to fit the insulation need and the particular roofing structure and corrugated roofing material 54 while substantially reducing amount of material needed and maintaining strength.

[0041] Referring to Fig. 9 there is shown block flow diagram of a method of forming a roof spacer particular to a defined use. Firstly, it is required to determine a roofing structure and thickness of insulation material required to determine leg spacing and a leg height and in step 151 there is the need to determine a roofing profile to determine a spacer head profile, height and spacing.

[0042] In the manufacturing step of step 152 there is provided a continuous strap of press shapeable metal and there is forming a spacer elongated body by shaping the metal strap to form open top legs of the predetermined leg height and leg spacing. It can be seen that this step is readily alterable to change the depth of the feet 24, to change the spacing of the feet 24 and the opening of the crevice 23 to match the bridge Therefore this step substantially improves the versatility for use in different roofing profile structures, different thicknesses of insulation and still making it readily useable.

[0043] In step 153 there is forming a plurality of shaped spacer heads each having a bridge section and a head portion having a height related to the determined profile and height.

[0044] Step 154 comprises mounting the shaped spacer heads to the shaped elongated spacer body with the bridge section overlying the crevices formed by the open top of the legs and fixing at spaced locations to provide the determined spacing between spacer heads. In the form of the roof spacer 11 having a combination of an elongated spacer body 12 with legs 24 formed from shaping of the legs 24 from single strap material, there is added strength by use of the fixing of the bridges 32 of the spacer heads 13 over the crevice 23 of the spacer body 12.

[0045] In step 155 there is the combination of an elongated spacer body with legs to space allow insulation to be extended therebetween with minimised crushing and with spacer heads of the plurality of spaced roof spacers spacing and allowing mounting of a roofing material thereto. It can be seen that the complex structure of the combined integral roof spacer 11 when overlaying the insulation 53 and to be fitted to the purlins 52 has a long multiple edged structure. However, this is substantially beneficial and versatile and dramatically increases the effective mounting of insulated roof structure by having fully useable long elongated roof spacers11 that can be readily handled as they are all in one and readily used. They even have the further benefit in one preferred form that the roof spacer includes openings over each of the spaced legs for screwing the mounted screws with fastening tools and fastening tools in a substantially vertical manner to fasten the spaced legs to the centre of the supporting roof structure.

[0046] The new invention also provides a method for the application of roof installation coupled with the advantage of the double-sided insulation and which together also form a unique insulation system.

[0047] It can be seen that the invention makes use of the roof lock system and has two parts.

a) A base to act as a spacer in a variation of heights.

b) A clip spot-welded to the top of base in the required position.

[0048] The base is designed to match the variations of different roof sheet width from various manufacturers as well as a variation in height to accommodate the various required R- Ratings. The required strength in the design comes from folded support edges and spot-welded clip forming a mini box section as the leg for the spacer.

[0049] Roof screws are pre-mounted in the base of the leg 24 below the hole 35 allowing easy install for the roofer with a conventional hand tool drill using an extension thru the precut hole 35 in the Clip13. The length of the base varies up to 1200mm with slight variations so as to align with different sheet sizes with the width if the insulation.

[0050] The Clip is designed also with different options and sizes so as to also match the variations of different roof sheet profiles from various manufacturers and is spot welded to the top of the base in 6 positions providing maximum strength and creating the top of the leg box section.

[0051] Part of this invention takes also into consideration the problem currently where a high R value has been specified and the thickness of the single sided foil blanket to achieve such R value means the length of rolls are shorter. i.e. the thicker the blanket the shorter the roll and as such that is more labour intensive.

[0052] The invention provides firstly means where the requirement for a genuine R value is required the roof is now put on once as the invention has the spacer incorporated in the clip unit. This means that in future a deck type roof when a genuine R- value is required will not compete with the invention forcing the existing spacer units to become obsolete and more use of the system.

[0053] Secondly the invention can be coupled with a double-sided foil blanket which adds further efficiency as the required R-Value is obtained with less thickness of blanket, which equates to longer rolls on the roof.

[0054] In a particular preferred form, there is provided Product that resulted from research overthe past 10 years which has provided information on future design and fibre possibilities and combinations for the make up of insulation. Two major factors came through, the use of air space and the use of aluminum foil laminated to a fibre product both sides produced the best combination for price and R value.

[0055] As a result, a range of double-sided laminated products of fibre and foil have been developed for commercial and domestic applications. The advantages of the structure of the products is the increased R-value, with less material, the strength allowing it to be laid in twice the breeze factor as normal and passes the required drop test in domestic without safety mesh.

[0056] Product development led to the design and building of a unique laminating machine. The machine is believed to be one of a kind in the world and has the ability to produce a range of double-sided laminated product using any combination of fibre in various thicknesses. The machine is controlled by a PLC requiring one or two persons for operation.

Interpretation Embodiments:

[0057] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments.

[0058] Similarly, it should be appreciated that in the above description of example embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description of Specific Embodiments are hereby expressly incorporated into this Detailed Description of Specific Embodiments, with each claim standing on its own as a separate embodiment of this invention.

[0059] Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form different embodiments, as would be understood by those in the art. For example, in the following claims, any of the claimed embodiments can be used in any combination.

Different Instances of Objects

[0060] As used herein, unless otherwise specified the use of the ordinal adjectives "first", "second", "third", etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

Specific Details

[0061] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Terminology

[0062] In describing the preferred embodiment of the invention illustrated in the drawings, specific terminology will be resorted to for the sake of clarity. However, the invention is not intended to be limited to the specific terms so selected, and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar technical purpose. Terms such as "forward", "rearward", "radially", "peripherally", "upwardly", "downwardly", and the like are used as words of convenience to provide reference points and are not to be construed as limiting terms.

Comprising and Including

[0063] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" are used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

[0064] Any one of the terms: including or which includes or that includes as used herein is also an open term that also means including at least the elements/features that follow the term, but not excluding others. Thus, including is synonymous with and means comprising.

Scope of Invention

[0065] Thus, while there has been described what are believed to be the preferred embodiments of the invention, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the invention, and it is intended to claim all such changes and modifications as fall within the scope of the invention. For example, any formulas given above are merely representative of procedures that may be used. Functionality may be added or deleted from the block diagrams and operations may be interchanged among functional blocks. Steps may be added or deleted to methods described within the scope of the present invention.

[0066] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms.

Industrial Applicability

[0067] It is apparent from the above, that the arrangements described are applicable to commercial building, insulation and roofing industries and to a method and system for providing roof mounting with insulation in an improved and novel manner.

Claims (1)

1. Claims The claims defining the invention are as follows: 1. A roof spacer comprising an elongated spacer body having a combination of: a. a plurality of spaced legs extending to a common plane as a lower part of the roof spacer; and b. a plurality of spacer heads extending in opposite direction to the legs to a common plane as an upper part of the roof spacer; wherein in use a plurality of the spaced roof spacers having a combination of i. the elongated spacer bodies with legs provide space to allow required thickness of insulation to be extended therebetween; ii. and wherein the spacer heads of the plurality of spaced roof spacers substantially match roofing material and allow mounting thereto and wherein the roof spacer has the legs formed by a continuous material shaped and the head portions attached at spaced locations to form the continuous but shaped elongated spacerbody 2. A roof spacer according to claim 1 wherein the lower legs have a shape which is substantially U-shaped. 3. A roof spacer according to claim 1 or 2 wherein the lower legs have a shape which is substantially inverted top hat shaped. 4. A roof spacer according to any one of claims 1 to 3 wherein the shaping of the elongated spacer body is by bending of a substantially planar elongated strip body to form the legs having a shape which has an open top forming a crevice. 5. A roof spacer according to claim 4 wherein a roof spacer has the head portions attached at spaced locations formed by a continuous but shaped elongated spacer body. 6. A roof spacer according to any one of the preceding claims wherein a roof spacer has the spacer heads with a bridge section for overlying the crevices and an offset head portion forming a roof mounting peak. 7. A roof spacer according to claim 6 wherein a roof spacer has the spacer heads with a bridge section for overlying the crevices and a hole in the bridge overlying the crevice of the leg to allow for access for fixing of the leg to the roof framework. 8. A roof spacer according to any one of claims 1 to 7 wherein the spacer heads are shaped and spaced along a top surface of the elongated spacer body to provide a mounting section in corrugations of a corrugated roofing material. 9. A roof spacer according to claim 10 wherein the spacing of spacer heads along the elongated spacer body matches the spacing of corrugations of the roofing material. 10. A roof spacer according to any one of claims 1 to 9 wherein the shaping of spacer heads includes a clip for engaging the shaping of corrugations of the roofing material. 11. A roof spacer according to any one of claims 1 to 9 wherein the shaping of spacer heads includes a shaped flange along the elongated spacer body which provides a clipping action of the shaping of corrugations of the roofing material to form the fixing of the roofing material to the roof spacer. 12. A roof spacer according to any one of claims 1 to 11 wherein the roof spacer includes openings over each of the spaced legs for receiving fastening tools in a substantially vertical manner to fasten the spaced legs of to the supporting roof structure. 13. A roof spacer comprising an elongated spacer body having a combination of: a. a plurality of spaced legs extending to a common plane as a lower part of the roof spacer; and b. a plurality of spacer heads extending in opposite direction to the legs to a common plane as an upper part of the roof spacer; c. wherein the roof spacer includes openings over each of the spaced legs for receiving fastener and fastening tools in a substantially vertical manner to fasten the spaced legs to the supporting roof structure d. and wherein at least one bridge straddles each of the spaced legs and are fixed at either side of the leg and wherein the bridge includes the openings over each of the spaced legs. 14. A method of forming a roof spacer particular to a defined use including the steps of: a. Determining a roofing structure and thickness of insulation material required to determine leg spacing and a leg height; b. Determining a roofing profile to determine a spacer head profile, height and spacing; c. Providing a continuous strap of press shapeable metal d. Forming a spacer elongated body by shaping the metal strap to form open top legs of the predetermined leg height and leg spacing; e. Forming a plurality of shaped spacer heads each having a bridge section and a head portion having a height related to the determined profile and height; f. Mounting the shaped spacer heads to the shaped elongated spacer body with the bridge section overlying the crevices formed by the open top of the legs and fixing at spaced locations to provide the determined spacing between spacerheads wherein a roof spacer is formed comprising an elongated spacer body having a combination of: i. a plurality of spaced legs extending to a common plane as a lower part of the roof spacer; and ii. a plurality of spacer heads extending in opposite direction to the legs to a common plane as an upper part of the roof spacer; and wherein in use a plurality of spaced roof spacers having a combination of an elongated spacer body with legs to space allow insulation to be extended therebetween with minimised crushing; and wherein with spacer heads of the plurality of spaced roof spacers spacing and allow mounting of a roofing material thereto.

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   FIGURE 1 P

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