ROOF AND WALL COVER SYSTEM

Abstract

A method of providing covers over at least a portion of a roof of a storm damaged built structure that includes the steps of: applying a sheet of heat shrinkable film over the portion of the roof, the sheet having a leading edge and a trailing edge and being a film of low density polyethylene including shrinking resins; wrapping portions of the leading edge around a first batten and attaching the first batten to the underside of a first eave or to the facia of the built structure; wrapping portions of the trailing edge around a second batten and attaching the second batten to the underside of a second eave or to the facia of the built structure at a location different than the first batten; and heating the sheet of heat shrinkable film to bring the film into conformity with the portion of the roof, wherein the heating step shrinks the sheet of film tight against the built structure to cover over the portion of the roof.

Claims

1-17. (canceled)

18. A method of covering at least a portion of a roof of a storm damaged built structure comprising the steps of: applying a length of heat shrinkable film over the portion of the roof, the length of heat shrinkable film having a leading edge and a trailing edge; wrapping portions of the leading edge around a first batten and attaching the first batten to an underside of a first eave or to a facia of the built structure; wrapping portions of the trailing edge around a second batten and attaching the second batten to an underside of a second eave or to the facia of the built structure at a location different than the first batten; and heating the length of heat shrinkable film to bring the film into conformity with a surface of the roof, wherein said heating step shrinks the length of film tight against the roof surface.

19. The method of claim 18 further comprising the steps of: applying a successive length of heat shrinkable film over the portion of the roof adjacent to the applied length of heat shrinkable film, the applied length and the successive length each having first and second lateral edges, wherein adjacent lateral edges of the lengths of heat shrinkable film overlap; and heating the overlapping lateral edges to seal the lateral edges to each other and join the lengths of heat shrinkable film together, the joined lengths having a first lateral edge and a second lateral edge.

20. The method of claim 19 further comprising the step of attaching one of the first or second lateral edges of the joined lengths to an edge of the built structure, the edge of the built structure being at a location different than a location of the first and second eaves.

21. The method of claim 18, the heat shrinkable film being a film of low-density polyethylene.

22. The method of claim 18, the heat shrinkable film being a film of low-density polyethylene including shrinking resins.

23. A method of covering at least a damaged portion of a roof of a structure comprising the steps of: applying a length of heat shrinkable film over the roof to extend from a first edge to a second edge of the roof and to cover the damaged portion of the roof, wherein the length of heat shrinkable film includes a leading edge and a trailing edge; mechanically attaching the leading and trailing edges to the first and second edges, respectively; and heating the length of heat shrinkable film to cause the film to conform to a surface of the roof.

24. The method of claim 23, said mechanically attaching step comprising: wrapping portions of the leading edge around a first batten and attaching the first batten to an underside of a first eave or to a facia of the structure; and wrapping portions of the trailing edge around a second batten and attaching the second batten to an underside of a second eave or to the facia of the structure at a location different than the first batten.

25. The method of claim 24 further comprising the steps of: applying a successive length of heat shrinkable film over the roof adjacent to the applied length of heat shrinkable film, the applied and the successive lengths of heat shrinkable film each having first and second lateral edges, wherein adjacent lateral edges of the lengths of heat shrinkable film overlap; and heating the overlapping lateral edges to seal the lateral edges to each other and to join the lengths of heat shrinkable film together, the joined lengths of heat shrinkable film having a first lateral edge and a second lateral edge.

26. The method of claim 25 further comprising the step of attaching one of the first or second lateral edges of the joined lengths to an edge of the structure, the edge of the structure being at a location different than a location of the first and second edges.

27. The method of claim 23, the heat shrinkable film being a film of low-density polyethylene.

28. The method of claim 23, the heat shrinkable film being a film of low-density polyethylene including shrinking resins.

29. A roof cover system comprising: a roof of a structure, the roof having a damaged portion, a first roof edge and a second roof edge; and a length of heat shrinkable film applied over the roof, the length of heat shrinkable film extending from the first roof edge to the second roof edge and covering the damaged portion, the length of heat shrinkable film including a leading edge and a trailing edge, the leading edge and the trailing edge being mechanically attached to the first and second roof edges, respectively, the length of heat shrinkable film conforming to a surface of the roof due to application of heat.

30. The roof cover system according to claim 29, wherein: the first roof edge includes a first eave having an underside and the second roof edge includes a second eave having an underside; the leading edge is wrapped around a first batten, the first batten being mechanically attached to the underside of the first eave or to a facia of the structure; and the trailing edge is wrapped around a second batten, the second batten being mechanically attached to the underside of the second eave or to the facia of the structure at a location different than the first batten.

31. The roof cover system according to claim 29, further comprising a successive length of heat shrinkable film positioned on the roof adjacent to the applied length of heat shrinkable film, the applied and the successive lengths of heat shrinkable film each have first and second lateral edges, wherein adjacent lateral edges of the lengths of heat shrinkable film overlap and are heat sealed together to join the lengths together, the joined lengths have a first lateral edge and a second lateral edge.

32. The roof cover system according to claim 31, wherein one of the first or second lateral edges of the joined lengths is attached to an edge of the structure, the edge of the structure being at a location different than a location of the first and second roof edges.

33. The roof cover system according to claim 29, wherein the heat shrinkable film is a film of low-density polyethylene.

34. The roof cover system according to claim 29, wherein the heat shrinkable film is a film of low-density polyethylene including shrinking resins.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0155] Embodiments of the present invention will now be described with reference to the accompanying drawings wherein:

[0156] FIG. 1 is a perspective view of a portion of a building of which the roof has sustained damage,

[0157] FIG. 2 is a side sectioned view of a portion of a building and existing roof structure to which has been applied a roof cover system according to the invention,

[0158] FIG. 3 is a side sectioned view of a portion of a partly completed building showing the application of a roof cover system of the invention to unclad roof framing,

[0159] FIG. 4 is a further side sectioned view of the building of FIG. 3 showing the roof cover system of the invention functioning as a permanent sarking layer,

[0160] FIG. 5 is an illustration of the preparation of a sheet of heat shrinkable material prepared on a ground surface as an assembly of lengths of material taken from a roll of film,

[0161] FIG. 6 is a perspective view of a portion of heat shrinkable material in position over a section of roof in which the sheets of material were prior prepared with air vents,

[0162] FIG. 6a is a perspective view of one preferred embodiment of the air vents of FIG. 6,

[0163] FIG. 7 is a perspective view of a supporting element laid out on a ground surface in preparation of assembly of lengths of material according to a fourth embodiment of the invention,

[0164] FIG. 8 shows portions of two adjoining, overlapped lengths of material laid out so that a first portion of the overlap lies over the supporting element of FIG. 7,

[0165] FIG. 9 is a perspective view of a guide rail assembly for use with the supporting element of FIG. 7,

[0166] FIG. 10 is a cross section of the guide rail assembly of FIG. 9 showing a portion of a heat gun and the overlap of the two length of material supported on the supporting element of FIG. 7,

[0167] FIG. 11 is a further cross section view of a roof of a building showing an alternative method of securing a roof cover according to the invention to the roof,

[0168] FIG. 12 is a view of a preferred arrangement of folding the heat shrinkable material for winding onto a dispensing roll rotationally supported in kit box,

[0169] FIG. 13 is an extract from a laboratory test report on performance characteristics of the heat shrinkable material,

[0170] FIGS. 14 and 15 illustrate the use of an assembly of sheets of shrinkable material prepared according to the invention for application to the roof and wall structures of a building as a sarking layer,

[0171] FIG. 16 is a plan view of a roof of a house which has been covered by heat shrinkable material secured to the perimeter of the roof,

[0172] FIG. 17 is a partial cross section view of an edge of the roof of FIG. 16 and details of a method of securing the heat shrinkable material,

[0173] FIG. 18 is a further plan view of a roof of a house covered by lengths of heat shrinkable material joined mechanically,

[0174] FIG. 19 is a cross section of a preferred mechanical joint between the overlapping lengths of heat shrinkable material of FIG. 18.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0175] The roof cover system of the present invention provides for a system and method for covering a damaged or uncompleted roof of a building. The system uses a heat shrinkable film, preferably a low-density polyethylene containing shrinking resins, UV inhibitors, anti brittling compounds, fire retardant additives and strengtheners for tear resistance. The film is preferably between 100 and 500 microns in thickness, though most preferably 200 microns, and is provided in rolls of various widths and lengths. In at least one preferred form of the film, it is provided with a heat reflective surface. A preferred specification for the film is given at the end of the description.

First Preferred Embodiment

[0176] With reference now to FIG. 1, typical damage to a tiled roof 10 of a building 12 may include the loss of a number of tiles 12 due to a high wind shear event, leaving the building 14 open to the ingress of water. Water ingress may also occur if tiles are cracked for example from heavy hail impact or falling trees or branches. Emergency temporary repair is provided by the roof cover system of the invention by applying the above described film over that portion of the roof which has sustained damage.

[0177] If required, sharp edges protruding from the roof surface may first be covered with suitable wadding and adhesive tape to prevent possible tearing of the film during application.

[0178] The extent of roof to be covered is measured and the most suitable available width roll of the heat shrinkable film selected. Film is cut to one or more lengths sufficient to extend from one edge of the roof to an opposite edge. With reference to FIG. 2, a trailing edge of a length of film is mechanically attached at the first edge 16 of the roof 10. In one preferred method as shown in FIG. 2, the trailing edge 15 of the film 18 is wrapped once around a length of batten 18. In one preferred form the batten is as long as the width of the film. The batten 20 is mechanically fixed to the underside 22 of the eaves 24 at the first edge of the roof 10. In still another possible arrangement, the batten 20 can be fixed directly to an existing batten through the roof tiles, as shown in FIG. 11.

[0179] The leading edge of the film is now passed over the roof to the opposite edge (not shown) of the roof and the leading edge of the film secured to the opposite side eaves in similar manner to that already described. If the outer side edge of the length of film adjoins an edge of the roof, this may be similarly secured under the eaves along that side of the roof. Alternatively, the leading edge of the film may be secured to the barge or fascia boards.

[0180] In one form heat is now applied to the film at the underside of the eaves 24 with a heat gun (not shown) to cause the film 18 to shrink securely around the batten and the undersides of the eaves. The heat gun, now attached to an extension arm (not shown), is then used to apply heat to at least a region around the perimeter of the film 18 stretched over the roof surface, causing it to tightly conform to the surface and covering missing or cracked tiles 12.

[0181] If the extent of the damage requires, successive lengths of film can be applied side by side. In a preferred form the film can be applied side by side with an overlap of preferably 150 to 300 mm. In a preferred form heat is applied along these overlaps to seal the edges of the adjoining lengths together.

[0182] Valley areas and other discontinuities in the roof surface can be accommodated by cutting film to suit the area involved and heat sealing to adjoining film length edges. Vertical roof penetrations, such as chimney stacks ventilators and the like, are sealed by preferably a 300 mm rise of film. Edges of riser sections of film can be taped or cable-tied to the penetration.

[0183] By the above means, a damaged roof can be rapidly and securely covered to prevent water ingress and damage to the inside of the building. Unlike tarpaulins which are difficult to secure and remain liable to dislodgement in high winds, the heat shrinkable film by conforming closely to the roof surface, provides a secure seal over the damage until permanent repairs can be made.

Second Preferred Embodiment

[0184] In a second preferred embodiment of the invention, a damaged section of a roof to be temporarily protected prior to permanent repair, is again covered by a heat shrinkable film. In this embodiment however, the method of application is different.

[0185] Instead of attempting to apply individual lengths of film, attaching a length at a first end to the eaves at one side of the roof, stretching the length over the roof to be attached at the eaves at the opposite side, and taping the edges of adjoining lengths of film together, the method of this embodiment, with reference to FIG. 5 is as follows:

(a) the location of the damaged section 12 of roof 10 is assessed in relation to the nearest opposing edges of the roof,
(b) the length of film required to extend between the opposing roof edges is estimated, allowing for overhang and fixing requirements,
(c) the width of the damaged area is ascertained and the number of lengths of the available film required to cover and overlap the damaged area determined,
(d) the number of lengths of material 18 is then cut from a roll 40 of the film and laid out side by side on the ground,
(e) while on the ground, adjoining edges of the lengths of film are taped to form a waterproof assembled sheet of heat shrinkable film, sufficient to stretch from one roof edge to the opposite roof edges and of sufficient width to cover the damaged area.

[0186] This assembled sheet is now pulled up onto the roof, positioned so as to cover the damaged area and outer ends fastened in similar manner as previously described above.

[0187] An advantage of this method is that there is no need to lift a relatively heavy roll of heat shrinkable material onto the roof and unroll it one what may be quite steep surfaces. Moreover it has been found in practice that the arrangement described in the first preferred embodiment above of taping the edges of adjoining lengths of the material together on the roof is both difficult and dangerous. This is especially so if the damage to the roof is extensive and perhaps been rendered structurally unsafe. The method of the present described embodiment minimises activity on the roof surface, requiring only that one edge of the sheet of material be carried over the roof from a first edge to an opposite edge.

Third Preferred Embodiment

[0188] In a third preferred embodiment of the invention, a heat shrinkable film may be applied to the roof framing of an uncompleted building. In this embodiment as shown in FIG. 3, the heat shrinkable film 18 is applied after the roof framing is complete but preferably prior to the attachment of facia boards.

[0189] In this embodiment also, lengths of film are prepared from suitable width rolls sufficient to stretch from one side of the roof to an opposite side. In this case the trailing and leading edges of the length of film are preferably attached by means of battens 20 fixed to the underside of the outer ends 26 of rafters 28, that is between the outer ends of the rafters 28 and the wall frame 30.

[0190] The heat shrinkable film 18 in this embodiment, is provided with a heat reflecting inner surface 32 so that the film 18 forms a permanent sarking layer behind the wall cladding or under the roof cladding, either tiles 34, as shown in FIG. 4, or metal sheeting. Thus in this embodiment the heat shrinkable film of the invention act both to protect the timberwork of a building under construction and provides a replacement for conventional reflective sarking.

[0191] The weatherproof nature of the heat shrinkable material applied in this way provides for internal work on the building to continue in the event of inclement weather, thus increasing productivity and economy of construction.

[0192] It will be understood that the method of application described in the second preferred embodiment above is also, indeed perhaps even more so, applicable to the present embodiment. In this case manipulating a roll of material and taping edges of lengths of material together over the open framework of the roof of a building under construction is even more difficult so that assembly on the ground, perhaps into a number of sheets, prior to placement over the roof framing, is clearly advantageous.

[0193] In each of the above described embodiments, the sheet of material may be further prepared, as shown in FIG. 6, by adding a distribution of air vents 100 at various locations in each of the strips 18. Preferably, the vents 100, as shown in FIGS. 6 and 6A, take the form of one-way covers or flaps 110 which are affixed over an aperture 112 cut into the strips of film 18 at the desired location. The flaps 110 are so arranged as to prevent the ingress of rainwater while allowing the passage of air.

[0194] In one preferred form the vent 100 is pre-formed of low density polyethylene and provided with a self adhesive base 114. To apply the vent 100 after the aperture has been prepared, a protective cover 116 is peeled off the adhesive layer of base 114 and the vent 100 pressed into position.

[0195] These vents allow the exhalation of air from underneath the sheet of material, either as a result of higher air pressure arising within the roof space, for example through rising warm air or through the ingress of wind, or due to negative pressure above the sheet material.

Fourth Preferred Embodiment

[0196] In the above described embodiments, in those cases where two or more adjoining lengths of heat shrinkable material were described as assembled into a sheet on a ground surface, the lengths of material were secured together by adhesive tape. While this can be adequate for temporary cover of a storm damaged structure for example, a stronger and, where required, a far stronger and more permanent solution is the heat welding of adjoining lengths of material along an overlap.

[0197] Nevertheless, prior to welding, it is preferable to hold the edge of the uppermost sheet of the overlap in place by adhesive tape to prevent problems in windy conditions.

[0198] With reference now to FIGS. 7 to 10, in the present invention, in one preferred arrangement an elongate support element 200 is laid at a convenient location on the ground surface on which the sheet is to be assembled. The support element 200 may comprise a length of timber or other, substantially heat resistant material, preferably 200 mm wide and somewhat longer than the length of weld in a weld sequence. The support element is provided with an attached rope or cable 210 of sufficient length to extend the length of the lengths of heat shrinkable material to be joined together. This rope or cable 210 is stretched out in line with the support element 200 and along the intended join between two lengths of the material.

[0199] As shown in FIG. 8, two adjoining lengths of heat shrinkable material 212 and 214 are then laid out side by side with an overlap 216 of approximately 150 mm over the supporting element 200 and the rope or cable 210, and so that the supporting element 200 underlies a first portion 218 of the overlap. Adhesive tape is applied to the outer edge of the overlap, at least for the first portion 218 of the overlap 216, if required.

[0200] As shown in FIG. 10, a guide rail assembly 220 substantially coextensive with the supporting element, is then laid over and centrally along the first portion 218 of the overlap, with the guide rail assembly resting on the supporting element 200 so that the overlapping portions of the two lengths of material 212 and 214 are secured between the guide rail assembly 220 and the supporting element 200.

[0201] The guide rail assembly 220 comprises two, spaced apart, rigid rail elements 222 and 224, preferably 1 m in length but may be provided in various lengths, for example 300, 600 or 1200 mm. The rail elements 222 and 224 are interconnected at their outer ends by connection cross members 226 and 228. Preferably, the end profiles of the rail elements 222 and 224 are as shown in FIG. 10 with recessed inward facing edges 225 and 227 and are preferably spaced 20 mm apart. The recesses are so arranged to guide a heat source at a predetermined distance above the overlap. The rail elements 222 and 224 are formed of metal, steel or preferably aluminium. Finally, the rail assembly 220 is provided with at least one, preferably two grab handles 230 for manipulating the assembly in use.

[0202] A heat gun 232 (partly shown in FIG. 10) is provided with a heat directing shroud 234 sized in width to fit between the recessed edges 226 and 228 of the guide rail assembly 220 and a length sized to deliver a quantum of heat to an area of overlapping sheets of material between the rail assembly, sufficient to fuse that area together within a predetermined time duration.

[0203] The heat gun 232 with its attached shroud 234 in drawn along the guide rail assembly 220 at an even rate, thus fusing that length of overlap 216 covered by the rail assembly. In one preferred arrangement, the heat gun may be mounted on a trolley (not shown) which traverses the guide rail. The heat gun may be moved along the guide rail manually, or the trolley could be powered to give a controlled rate of movement.

[0204] The arrangement of the guide rail which controls the separation of the heat gun from the material, combined with a predefined rate of travel, assures the consistency and quality of the weld.

[0205] The supporting element 200 is then drawn with the rope or cable 210 into a next position along the sheet overlap and the guide rail assembly 220 repositioned accordingly. Heat is then applied to this next length of the overlap, and the process repeated until the required length of sheet assembly is reached.

[0206] In an alternative arrangement, the sheets of material may be laid out over a suitable ground surface such as for example a nearby car park or a suitably flat area of lawn. In this instance, the overlap portion is again secured prior to the welding process by the placement of the guide rail assembly over the overlap portion and the heat source applied as described above. After welding this first overlap portion, the guide rail assembly is positioned over a next overlap portion until a required length of sheet assembly is reached.

[0207] The air vents 100 referred to above and shown in FIG. 5, may be welded into the required locations in similar fashion. The cover piece of material forming the vent cover preferably overlaps three of the sides of the pre-cut aperture in the sheet of material sufficient for welding the overlap as described for the joining of the two lengths of material. These three sides of the piece of material forming the vent cover are welded to the length of material around the pre-cut aperture, with the fourth side of the material arranged to overlap the aperture by a minimum of 300 mm.

[0208] The arrangement of this preferred embodiment allows for very secure, watertight and relatively accurate joining of adjoining lengths of the heat shrinkable material. The portion of overlap to be joined is held securely by the weight of the guide rail assembly while the guide rail profiles both a guide and control of the application of fusing heat.

[0209] The assembly of sheets is prepared for fastening to the roof by adding securing battens at least along two opposing edges after pulling the assembly up onto the roof surface to cover the damaged areas. The battens are then mechanically secured either to the eaves of the roof, the facia boards or, if the damage is restricted to a relatively small area of the roof, to battens of the roof structure.

[0210] In this latter case and for a tiled roof as shown in FIG. 11, a masonry drill bit is used to drill holes through tiles coincident with the underlying roof batten and fasteners driven through the securing batten, the tiles and into the roof batten. Once in position, the heat source is applied to the assembly of sheets to tighten the heat shrinkable material into conformity with the roof surface.

[0211] The heat shrinkable material, guide rail assembly, heat gun, tape and associated tools may be provided in kit form. In a preferred arrangement shown in FIG. 12, a box 40 is provided in which at least one, preferably two rolls 42, of the heat shrinkable material 44 are rotationally supported so as to allow the material to be drawn from the box. The box 40 is provided with a stop 46 which allows the lid 48 to be propped open leaving a narrow slit for the material 44 to be drawn through while at the same time providing a cutting guide for cutting the material when drawn out to a required length. The box is further provided with a compartment 50 for storage of the heat source and ancillary equipment (not shown).

[0212] Preferably, the heat shrinkable material is wound onto the rolls 40 folded as shown in FIG. 12 so that when drawn from the box and opened out the sheet of material is approximately four times the width of the roll from which is was drawn.

[0213] It will be understood that the procedure of the assembly of lengths of the heat shrinkable material as described for this embodiment may equally be applied for the assembly of sheets of heat shrinkable material intended to form a sarking layer for the roof or walls of a building where the sarking layer is secured to the roof and wall framing before applying the roof and wall cladding.

Fifth Preferred Embodiment

[0214] With reference to FIG. 1, typical damage to a tiled roof 10 of a building 12 may include the loss of a number of tiles 12 due to a high wind shear event, leaving the building 14 open to the ingress of water. Water ingress may also occur if tiles are cracked for example from heavy hail impact or falling trees or branches. Emergency temporary repair is provided by the roof cover system of the invention by applying the above described film over that portion of the roof which has sustained damage.

[0215] If required, sharp edges protruding from the roof surface may first be covered with suitable wadding and adhesive tape to prevent possible tearing of the film during application.

[0216] The extent of roof to be covered is measured and the most suitable available width roll of the heat shrinkable film selected. Film is cut to one or more lengths sufficient to extend from one edge of the roof to an opposite edge. With reference to FIG. 2, a trailing edge of a length of film is mechanically attached at the first edge 16 of the roof 10. In one preferred method as shown in FIG. 2, the trailing edge 15 of the film 18 is wrapped once around a length of batten 18. In one preferred form the batten is as long as the width of the film. The batten 20 is mechanically fixed to the underside 22 of the eaves 24 at the first edge of the roof 10. In still another possible arrangement, the batten 20 can be fixed directly to an existing batten through the roof tiles, as shown in FIG. 11.

[0217] The leading edge of the film is now passed over the roof to the opposite edge (not shown) of the roof and the leading edge of the film secured to the opposite side eaves in similar manner to that already described. If the outer side edge of the length of film adjoins an edge of the roof, this may be similarly secured under the eaves along that side of the roof. Alternatively, the leading edge of the film may be secured to the barge or fascia boards.

[0218] In a preferred form no heat is applied to the film. The film is secured around the batten and the undersides of the eaves to tightly conform to the surface and covering missing or cracked tiles 12.

[0219] If the extent of the damage requires, successive lengths of film can be applied side by side. In a preferred form the film can be applied side by side with an overlap of preferably 150 to 300 mm. In a preferred form no heat is applied along these overlaps.

[0220] Valley areas and other discontinuities in the roof surface can be accommodated by cutting film to suit the area involved and mechanically fixed to adjoining film length edges. Vertical roof penetrations, such as chimney stacks ventilators and the like, are sealed by preferably a 300 mm rise of film. Edges of riser sections of film can be taped or cable-tied to the penetration.

Sixth Preferred Embodiment

[0221] With reference now to FIGS. 16 and 17, in this preferred embodiment, heat shrinkable material 300 is used to cover a roof 302 in its entirety. The heat shrinkable material may be formed from lengths of material, combined into a sufficiently large assembly of lengths (not shown) by any of the methods described above, to completely cover the roof with some overhang.

[0222] In this preferred arrangement, the material 300 is drawn over the perimeter guttering 304, before edges of the overhang being wrapped at least partially, but more preferably at least twice, around a batten or furring strips 306, which is then secured to the facia or barge board 308.

[0223] Although the embodiment has been described in FIGS. 16 and 18 with reference to a simple rectangular or square roof, it will be understood that the method of attachment of a film of heat shrinkable material may be applied to any roof with conventional guttering and/or facia boarding below the overhanging edge of the roof cladding.

[0224] Turning now to FIGS. 18 and 19, in this instance also the entire roof 302 is covered by heat shrinkable material 300, and is again secured in the manner described above, that is by battens or furring strips 306 attached to facias or barge boards. In this case however, adjoining lengths 310A and 310B of heat shrinkable material making up the area of material required, are mechanically joined along overlapping edges 312 and 314 by side-by-side battens or furring strips 316 and 318 and secured to the roof.

[0225] As shown in FIG. 19, the edge 312 of a first of the overlapping edges of length 310A is wrapped at least partially, but more preferably at least twice, around a first batten or furring strip 316. The first batten of furring strip 316 is then placed on the roof surface and secured to a substructure element (not shown) of the roof by a screw 320 driven through the wrapped polymer, the batten of furring strip, and the roof cladding.

[0226] The edge 314 of the second of the overlapping edges of length 310B is then similarly wrapped around the second batten or furring strip 318, and this second batten or furring strip placed beside the first, lying over the polymer material of the first length 310A. This batten or furring strip 318 is then similarly secured either by driving a screw 322 through the wrapped material, batten and roof cladding into the substructure element. Alternatively, the second batten may be secured to the first.

In Use

[0227] In use, one or more kits are transported to a site where damage to a roof has occurred. The damaged area is measured and the number of lengths to cover the width and the length of the lengths of material determined. These lengths are drawn from the kit box and an initial two lengths placed side by side on the supporting surface, which may be directly on the ground or on a supporting element, with the required overlap, and the overlap welded as described above.

[0228] The welding process described in this embodiment of the invention has been proven to provide extremely strong welds, well able to withstand any conceivable wind load when applied to a roof or to the structure of a building under construction, as attested by the extract from a laboratory test report shown in FIG. 13. As well, wind tunnel testing has shown the welding process of the invention will withstand wind speeds of up to at least 160 Km/Hr.

Preferred Material Specification

[0229] A blend of LDPE resin & LLDPE resin (suitable resin examples Dowlex 2645 liner low density polyethylene (LLDPE) with a relative density of 0.918 & melt index of 0.85 mixed with Dow 303E low density polyethylene (LDPE) with a relative density 0.922 & melt index of 0.30. Best performance is a mixture of 65% LDPE & 35% LLDPE.

UV Screen Additive Minimum 1 Year

[0230] Non halogen Fire retardant additive (high quality that can be used on food grade manufacturing machines) Fire additive to meet the French M1 standard
200 micron in thickness (8 mil)
Roll length 131 ft (40 m)
Roll “lay-flat” width 16.4 feet (5 m)—Note roll to be concertina folded to an overall width of 1300 mm.
Film rolled onto heavy duty 3′ inch (76 mm) cardboard cores.
Each roll to weigh 83.67 pound (37.5 kg)
Stormseal logo to be printed on the film logo size—3 ft wide (1000 mm)×10 inches high (250 mm) printed in a repeat manner.
Film to have a minimum 40% shrink capability

High Edge Tear Resistance

Minimum Ultimate Tensile Strength 1000 Pound Per Yard (450 kg Per Meter)

[0231] In a preferred form, the material for the protective covering may be a blend of LDPE resin & LLDPE resin. The material may include additives to improve its UV stability and flame retardant properties.

[0232] One example of the material specification is listed as follows:

TABLE-US-00001 Property Specification Gauge 200 um Dart Drop 280 grams Tensile Yield - Machine Direction 10.5 MPa Tensile Yield - Transverse Direction 10.5 MPa Ultimate Tensile - Machine Direction 14.0 MPa Ultimate Tensile - Transverse Direction 13.0 MPa Shrink - Machine Direction 45% Shrink - Transverse Direction 40% Co-efficient of friction (COF) - Slip 0.25 UV stability 2500 kWh/m2 of solar exposure (Equivalent to 1 year of solar exposure at the equator) Flame Retardant Self-extinguishes within 5 seconds Colour Pantone 1655C Corona Treatment 38 Dyne Corona Treatment Area Strip treated to cover printed area only Resins Virgin resin only Minimum 10% LLDPE Cores 76 mm inside diameter

Application as Wall Sarking

[0233] Select the correct width roll as it is important to have the least amount of welds in the sealing process. [0234] Site measure the area which to be sealed. [0235] Ensure any sharp object are padded. [0236] Attach one side of the shrink wrap to the inside edge of perimeter stud work. Securely fix by a continuous batten. [0237] Take the leading edge of the said film across to the Opposite the structure. [0238] Securely fix off the opposite side by continuous batten. [0239] Apply heat to the film wrapped stud in a continuous even pattern with a similar motion of a spray paint gun. [0240] Allow time for the film to shrink on to itself. [0241] Repeat this process to all vertical wall surfaces. [0242] Now using the heat gun extension tool apply an even continuous heat to the entirety of the vertical wall surface allowing enough passes for the shrink wrap to contract. [0243] Continue this process with overlapped joints of 300 mm until the structure is covered entirely. [0244] For wall penetrations such as windows and doors cut the plastic as required. [0245] Allow to cut around alt wail penetrations allowing a minimum of 300 mm rise around all penetrations. Apply heat to ensure the film shrinks back onto the sub structure allowing a watertight seal. [0246] Ensure all edges are sealed. [0247] Continuously check for burn holes and patch as required. [0248] For vertical impact damaged areas a sub structure frame will be required for the shrink wrap to be applied over. This is a simple batten type frame with diagonal bracing securely fixed to the structure.

Uses Include

[0249] Wall insulation and draught elimination. [0250] Asbestos removal and disposal. [0251] All weather protection during construction to eliminate lost time. [0252] Cost effective weather seal for storm Impact damaged buildings and or structures on vertical surfaces. [0253] Replacement/substitution for Vertical tarpaulins installations. [0254] Vertical timber framework protection during construction.

Benefits

[0255] Cost effective replacement for wall sarking/insulation. Reflective surface provides excellent thermal qualities. [0256] Provides excellent thermal insulation on walls. [0257] Ensures kiln dried structural framework is not exposed to weather conditions eliminating structural movement. [0258] Provides a dust free environment when removing asbestos. [0259] Reduces residual cost and time during re construction of storm Impact damaged buildings and or structures. [0260] Eliminates inclement weather days after main structure is in place therefore assisting productivity. [0261] No ongoing hire cost as is for tarpaulins. [0262] Eliminates the need to re attend sites to secure tarpaulins during the reconstruction process.