WO2015123721A1 - A roof - Google Patents
A roof Download PDFInfo
- Publication number
- WO2015123721A1 WO2015123721A1 PCT/AU2015/000088 AU2015000088W WO2015123721A1 WO 2015123721 A1 WO2015123721 A1 WO 2015123721A1 AU 2015000088 W AU2015000088 W AU 2015000088W WO 2015123721 A1 WO2015123721 A1 WO 2015123721A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roof
- sheets
- sheet
- cladding sheets
- frame
- Prior art date
Links
- 238000005253 cladding Methods 0.000 claims abstract description 177
- 230000015572 biosynthetic process Effects 0.000 claims description 40
- 238000005755 formation reaction Methods 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000007858 starting material Substances 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- 238000010276 construction Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000004078 waterproofing Methods 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000002648 laminated material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013086 organic photovoltaic Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
- E04D3/30—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/15—Trimming strips; Edge strips; Fascias; Expansion joints for roofs
- E04D13/158—Trimming strips; Edge strips; Fascias; Expansion joints for roofs covering the overhang at the eave side, e.g. soffits, or the verge of saddle roofs
- E04D13/1585—Trimming strips; Edge strips; Fascias; Expansion joints for roofs covering the overhang at the eave side, e.g. soffits, or the verge of saddle roofs covering the verge of saddle roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/365—Connecting; Fastening by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/40—Slabs or sheets locally modified for auxiliary purposes, e.g. for resting on walls, for serving as guttering; Elements for particular purposes, e.g. ridge elements, specially designed for use in conjunction with slabs or sheets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0445—Drainage channels
- E04D2013/045—Drainage channels on inclined roofs
- E04D2013/0454—Drainage channels on inclined roofs at the intersection of roof surfaces, e.g. roof valleys
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0459—Drainage borders, e.g. dripping edges, gravel stops or dispersers
- E04D2013/0468—Drip edges
Definitions
- the present invention relates to a roof for a building that includes a plurality of roof cladding sheets, typically metal roof cladding sheets, and a roof frame that supports the roof cladding sheets.
- the present invention also relates to a roof cladding sheet for a building.
- the present invention also relates to an under flashing sheet and other elements o that contribute to waterproofing a building
- the present invention also relates to a method of installing a roof on a building.
- the present invention also relates to a solar roof panel assembly that includes a roof cladding sheet and a solar roof panel, which may be a solar (PV) roof panel, for converting solar energy into another form of energy, such as electrical energy, mounted5 on the roof cladding sheet.
- a solar roof panel assembly that includes a roof cladding sheet and a solar roof panel, which may be a solar (PV) roof panel, for converting solar energy into another form of energy, such as electrical energy, mounted5 on the roof cladding sheet.
- PV solar
- the roofing market in Australia is dominated by roof tiles made from terracotta 0 or concrete materials and metal roof cladding sheets that are roll-formed or pressed from steel strip.
- the roofing market is extremely cost sensitive.
- metal roof cladding sheets for a residential building are custom- cut to a length required to cover a distance from an eave to a ridge of a roof of the building.
- This arrangement is often described as a "vertical" arrangement of roof cladding sheets on a roof.
- This arrangement eliminates a number of joins in the metal roof cladding sheets, particularly along the sheet length. This is important from installation and weatherproofing perspectives.
- custom-cutting sheets to length can have an impact on cost.
- the present invention provides a roof for a building that includes a roof frame having a plurality of spaced-apart roof trusses extending between a ridge and a gutter of the roof and a plurality of roof cladding sheets, typically metal roof cladding sheets, fixed directly from a structural viewpoint to the trusses so that there is a direct structural connection between the roof cladding sheets and the roof frame, with the roof cladding sheets extending horizontally across the roof frame, and with the roof being a structural roof cladding as described herein.
- the roof may be of any shape.
- the roof may include one or more than one valley, hip and barge board section.
- trusses as used herein is understood to include structures described as truss frames, rafters or other construction elements that extend between the ridge and the gutter of the roof.
- the above-described roof includes a direct structural connection between the roof cladding sheets and the roof frame. This means that there are no structural elements between the roof cladding sheets and the trusses.
- the roof frame does not include (and does not need) horizontally extending battens secured to the trusses and on which the roof cladding sheets are secured that are often required for typical roof construction.
- the roof frame does not include (and does not need) plywood or other sheet material secured to the trusses and on which the roof cladding sheets are secured that are often required for typical roof construction. 5 Roof installation is a significant component of the cost of roofs. Securing
- roof cladding sheets directly to roof trusses provides an opportunity to significantly simplify installation cost (and installation time) of roof cladding sheets on roof frames.
- the invention is not confined to roofs having solar roof panels and extends to roofing generally.
- the invention also makes it possible to manufacture metal 0 roof cladding sheets as "modular" lengths, which can be packed in bundles of any
- the roof of the invention may include structural flashings so that it is not necessary to use supporting battens or valley boards when the roof includes valleys.
- the roof of the invention may also include structural ridge and barge board 5 section flashings when the roof includes ridge and barge board sections.
- structural roof cladding is understood herein to mean that the roof cladding formed from the roof frame and the roof cladding sheets secured directly to roof trusses at a given truss spacing can support the weight of a person walking on the roof without the roof cladding being damaged. It is also understood to mean that the o roof cladding will also withstand wind and other structural loading conditions imposed on the roof structure. There are a number of different factors that may contribute to forming a structural roof cladding.
- these factors include, by way of example only, the spacing of the trusses, forming the roof cladding sheet from a structural sheet material, appropriate gauge selection for the sheet, appropriate tensile strength selection for the steel or other material of the sheet, selection of the width and length of the sheet, and forming the sheet with reinforcing ribs and other formations that strengthen the sheet.
- the roof cladding sheets may be made from a structural sheet as defined in Australian Standard AS 1562 Part 1 or 2.
- the roof cladding sheets may be 1-9 m long.
- the roof cladding sheets may be 0.3-1.0 m wide.
- the roof cladding sheets may include at least two pans and reinforcing formations that separate the pans.
- the pans may be at an angle of 2-15 degrees to a horizontal axis.
- the width of the pans may be 10-25 cm.
- the pans may have intermediate stiffening ribs to improve the aesthetics, increase structural rigidity or hide defects introduced in the forming such as oil- canning.
- the reinforcing formations may be ribs.
- the reinforcing formations may be angled sections (transitions) that separate the pans.
- the reinforcing formations may be angled steps that separate the pans.
- the steps are perpendicular or angled steps in relation to the pans.
- the roof cladding sheets may be made (for example roll-formed or pressed) from steel sheet.
- the tensile strength of the steel may be 300-900 MPa.
- the gauge of the roof cladding sheets may be 0.3 -0.8 mm.
- the roof cladding sheet may include a solar assembly mounted to the cladding sheet.
- the roof cladding sheets may include an acoustic laminate mounted to the cladding sheet.
- the roof cladding sheets may include a fire resistant laminate mounted to the cladding sheet.
- the roof cladding sheets may include side edge formations that enable a plurality of the sheets to be positioned side by side in abutting or overlapping relationship.
- the roof cladding sheets may include a pair of parallel sides and an upturned side formation extending along one side and a downturned side formation extending along the other side.
- the upturned side formation and the downturned side formation may be formed to enable a plurality of the sheets to be positioned horizontally side by side in overlapping relationship.
- the upturned side formation and the downturned side formation are identical.
- the first roof cladding sheets that are installed on the roof frame are the sheets adjacent a gutter of the roof, with the downturned side formation of each roof cladding sheet in a first line of sheets being positioned adjacent the gutter and the upturned side formation of each sheet being positioned on the roof frame away from the gutter.
- the upturned side formations of the sheets in this first line provide effective reference points for locating the next line of roof cladding sheets on the roof frame.
- the downturned side formation of each roof cladding sheet in the next line of sheets is positioned to overlie the upturned side formations of the roof cladding sheets in the first line of sheets and thereby provide continuous coverage at the overlap.
- the upturned side formations of the roof cladding sheets in the first line of sheets cooperate with the downturned side formations of the roof cladding sheets in the next line of sheets to locate the next line of sheets on the roof frame.
- the upturned side formations and the downturned side formations are also advantageous because installing roof cladding sheets on the roof frame with the downturned side formations of the sheets on the gutter line provides an opportunity, optionally in conjunction with suitable flashing (described herein as stater sheets), to close the roof at the gutter line and minimise the risk of ember entry into a roof space at the gutter line.
- the roof cladding sheets may be a quadrilateral sheet.
- the roof cladding sheets may be a quadrilateral sheet with a pair of parallel sides and a pair of parallel ends.
- the roof cladding sheets may be mounted directly to the roof frame by any suitable fastener systems.
- waterproofing is a particularly significant technical issue for horizontally extending roof cladding sheets at the ends of the sheets at hips, valleys, and barge board sections of roofs, particularly in situations where rain sheets across roofs.
- the roof of the invention may include weatherproofing in the form of an under o flashing sheet on any one of a hip, valley or barge board section of the roof that is
- roof frame secured directly to the roof frame and is positioned so that ends of the roof cladding sheets that extend to the hip, valley or barge board section at least partially overlie the under flashing sheet.
- the under flashing sheet may include an elongate channel or a plurality of
- roof cladding sheets horizontally-extending roof cladding sheets and discharges from the ends of the roof cladding sheets, with the channel or channels directing the water downwardly from the roof so that the water does not flow into a roof space between the building and the roof.
- the under flashing sheet may include elongate ribs and troughs that define the o channel or channels.
- the use of ribs and troughs is advantageous in terms of making the under flashing sheet a structural element.
- the under-flashing sheet may include a plurality of elongate ribs and troughs that define a plurality of parallel channels.
- the under flashing sheet may include ends having a 45 degree angle for hip and valley applications to avoid the need for on-site cutting of the sheet.
- the under flashing sheet may be adapted for hip or valley sections of the roof.
- the under flashing sheet may be arcuate in transverse cross- section to fit the profile of the hip or valley sections of the roof.
- the under flashing sheet may be adapted for a barge board section of the roof.
- the under flashing sheet may include a downturned leg that is adapted to be positioned against the barge board section.
- the design of the under flashing sheet may be such that one suitably-formed member may be used or adapted to fulfil the role of the hip and valley section under flashings.
- the roof may include weatherproofing in the form of an over flashing sheet that is secured direcly to the roof frame and is positioned over an under flashing sheet and is formed to cover the ends of adjacent roof cladding sheets.
- the over flashing sheet provides a first stage waterproofing and the under flashing sheet provides a second stage wate roof ⁇ ng at the hips, valleys, and barge board sections of the roof.
- the roof may include a flashing sheet, referred herein as a roof starter sheet, that is secured directly to the roof frame and is positioned between the gutter of the roof and a first line of roof cladding sheets adjacent the gutter line.
- the roof starter sheet provides a transition between the gutter and the first line of roof cladding sheets that may be an advantage in terms of the roof construction at the gutter of the roof.
- the roof starter sheet may also be an advantage in terms of water flow from the roof into the gutter.
- the roof starter sheet may also be an advantage in terms of minimising the risk of ember entry to the roof space.
- the roof starter sheet may include a reinforcing rib extending along one side of the sheet.
- This reinforcing rib can also provide a means of weather proofing to restrict any water that is carried under the first line of roof cladding sheets from entering the roof space.
- the roof starter sheet may form an attachment location for the roof cladding sheets in the first line of roof cladding sheets.
- the attachment location may be the reinforcing rib.
- the roof may include non-structural elements, such as sarking, between the roof cladding sheets and the roof trusses.
- the roof may have a pitch of 15-35 degrees.
- the roof pitch may be 20-25 degrees.
- the centre-centre spacing of the trusses of the roof frame may be 400-1300 mm. Typically, the centre-centre spacing of the trusses of the roof frame is 450-750 mm.
- the average centre-centre spacing of the trusses of the roof frame is 600 mm.
- the centre-centre spacing of the trusses of the roof frame is 550-650 mm.
- the present invention also provides a roof for a building that includes a roof frame having a plurality of spaced-apart roof trusses extending between a ridge and a gutter of the roof and a plurality of horizontally-extending roof cladding sheets fixed directly from a structural viewpoint to the trusses so that there is a direct structural connection between the roof cladding sheets and the roof frame, and weathe roofing in the form of an under flashing sheet on any one of a hip, valley or barge board section of the roof that is secured directly to the roof frame and is positioned so that ends of the roof cladding sheets that extend to the hip, valley or barge board section at least partially overlie the under flashing sheet.
- the under flashing sheet may include an elongate channel or a plurality of elongate channels extending along the sheet that receive water that flows along the horizontally-extending roof cladding sheets and discharges from the ends of the roof cladding sheets, with the channel or channels directing the water downwardly from the roof so that the water does not flow into a roof space between the building and the roof.
- the present invention also provides a method of installing the above-described roof that includes the following steps:
- step (d) repeating step (c) for each successive line of the above-described roof cladding sheets.
- the method may also include positioning over-flashing sheets to cover the under flashing sheets.
- the present invention also provides a roof cladding sheet, typically a metal roof cladding sheet, as described above.
- the present invention also provides a roof cladding sheet, typically a metal roof cladding sheet, that can form a structural roof cladding as described herein when directly mounted to roof trusses at centre-centre truss spacing of 400-1300 mm, typically 450-750 mm, and more typically an average of 600 mm.
- a roof cladding sheet typically a metal roof cladding sheet
- the present invention also provides an under flashing sheet, typically a metal under flashing sheet, as described above.
- the present invention also provides a roof starter sheet, typically a metal roof stater sheet, as described above.
- the present invention also provides a solar roof panel assembly that includes the above-described roof cladding sheet and a solar roof panel, which may be a solar (PV) roof panel, for converting solar energy into another form of energy, such as electrical energy, mounted on the roof cladding sheet.
- a solar roof panel assembly that includes the above-described roof cladding sheet and a solar roof panel, which may be a solar (PV) roof panel, for converting solar energy into another form of energy, such as electrical energy, mounted on the roof cladding sheet.
- PV solar
- solar roof panel is understood herein to mean a panel that can convert solar energy into another form of energy, such as electrical or thermal energy, and can be mounted to a roof of a building.
- one type of solar roof panel of interest to the applicant includes a photovoltaic cell module for converting solar energy into electrical energy.
- the solar roof panel may include (a) a photovoltaic cell module for converting solar energy into electrical energy and (b) electrical components, such as a wiring junction box and electrical cables and other devices for transferring electrical energy from the solar roof panel for use in an electrical system of the building or a local electrical network.
- the solar roof panel may be in the form of a flexible film.
- the photovoltaic cell module may include a semi-conductor material electro- deposited or otherwise deposited on an electrically-conductive, such as stainless steel, flexible substrate and encapsulated in a moisture barrier laminate material.
- the photovoltaic cell module may include organic photovoltaic material encapsulated in a moisture barrier laminate material.
- the photovoltaic cell module may include organic or semi-conductor material directly applied/deposited on the sheet and encapsulated in a moisture barrier laminate material.
- the present invention also provides a system for generating electrical energy from solar energy using the solar roof panel mounted on the above-described roof cladding sheet.
- the present invention addresses a number of the technical hurdles associated with horizontal roof cladding sheet systems, typically metal roof cladding systems, described in the patent and non-patent literature.
- these technical hurdles include, by way of example, forming a roof that meets structural requirements and is waterproof.
- Figure 1 is a top plan view of a roof of a building in accordance with one embodiment of the invention having a plurality of structural metal roof cladding sheets in accordance with one embodiment of the invention mounted to the roof frame, and with a section of the roof uncovered to show the roof frame in that section;
- FIGS 2 to 4 are perspective views of sections of the roof shown in Figure 1 at different locations and stages of the construction of the roof, illustrating how the roof cladding sheets and other roof components, such as starter sheets and under flashing sheets, and over flashing sheets, are positioned during roof construction;
- Figure 5 is a perspective view of the embodiment of the structural metal roof cladding sheet of the roof of Figures 1 to 4;
- Figure 6 is a transverse cross-section of the roof cladding sheet shown in Figure
- Figure 7 is a perspective view of an embodiment of a flashing sheet that can be used as an under flashing element for a section of a hip of the roof of Figures 1 to 4 or as an under flashing element for a section of a valley of the roof of Figures 1 to 4,
- Figure 8 is a transverse cross-section of the flashing sheet shown in Figure 7;
- Figure 9 is a perspective view of an embodiment of a flashing sheet that can be used as an under flashing element of the barge board at the gable section of the roof of Figures 1 to 4;
- Figure 10 is a transverse cross-section of the flashing sheet shown in Figure 9;
- Figure 11 is a perspective view of an embodiment of a flashing sheet that can be used as a starter element at the gutter of the roof of Figures 1 to 4;
- Figure 12 is a transverse cross-section of the flashing sheet shown in Figure 11;
- Figure 13 is a perspective view that illustrates the position of one of the roof cladding sheets on one of the under flashing element for a section of a hip of the roof shown in Figures 1 to 4 during the construction of the roof;
- Figure 14 is a vertical sectional view at the gutter line of the roof of Figures 1 to 4 that illustrates another embodiment of a flashing sheet that can be used as a starter element of the roof of Figures 1 to 4.
- the roof in accordance with one embodiment of the invention includes:
- the roof also includes a plurality of under flashing sheets 69, 71 for the hips, valley, and barge board sections of the roof that are not shown in Figures 1 to 4 but are shown in Figures 7 to 10 and 13 and described further below.
- the roof is an L-shaped hip roof with one gable end 31.
- the roof has an reshaped ridge rafter 61, hip rafters 63, and a valley rafter 65.
- the invention is not limited to the specific roof shape shown in the Figures and extends to any roof design.
- the roof frame includes a plurality of parallel upright A-frame assemblies.
- the A-frame assemblies include downwardly inclined spaced-apart trusses 17 extending between the ridge 61 and the gutter 7 of the roof.
- the trusses 17 are the structural connection points for the roof cladding sheets 9.
- the partial roof construction shown in Figure 1 reveals the location of the roof trusses 17.
- the roof trusses are an average of 600 mm centre-centre spacing.
- roof truss also includes structures described as roof truss frames, rafters or other construction elements that extend between the ridge and the gutter of the roof.
- the roof cladding sheets 9 are mounted (from a structural perspective) directly to the trusses 17 by any suitable fastening means, such as fasteners, adhesives and concealed clips.
- the roof cladding sheets 9 are made from a structural sheet as defined in Australian Standard AS 1562 Part 1 or 2. The disclosures in these parts of the
- the roof cladding sheets 9 are arranged to run horizontally across the roof.
- the lengths of the roof cladding sheets 9 may be selected so that the sheets 9 run horizontally across the whole length of the roof sections between hips, valleys and barge board sections of the roof.
- the lengths of the sheets 9 may be selected so that multiple lengths of the sheets 9 are required to cover a given span length or so that a modular section length is chosen to reduce stock holding.
- each roof cladding sheet 9 is roll-formed or pressed from steel strip and is generally quadrilateral in shape and of any suitable length and width and includes:
- step 35 that separates the pan sections 29, 33 and acts as a reinforcing element.
- the pan sections 29, 33 are formed as planar pan sections and do not include any ribs or other formations that inhibit water flow across the pans.
- the invention is not limited to this arrangement and the pan sections 29, 33 may include ribs or other formations that strengthen the roof cladding sheets 9. These ribs or other formations may be positioned to have a secondary effect of inhibiting water flow.
- the side formations 25, 27 also act as reinforcing elements and contribute to the overall structural properties of the roof cladding sheet 9.
- the side formations 25, 27 are formed to facilitate positioning successive roof cladding sheets 9 in overlapping relationship while minimising back flow of water into the roof space. More specifically, the design of the side formations 25, 27 is such that an anti-capillary lap is formed to limit the ingress of water into the roof space.
- the roof cladding formed from the roof cladding sheets 9 mounted to the roof trusses 17 provides a "structural" roof cladding on the roof at the spacing of the trusses 17.
- the roof cladding formed from the roof cladding sheets 9 secured directly to roof trusses 17 at the truss spacing can support the weight of persons walking on the roof without the roof cladding being damaged.
- the roof cladding sheets 9 can also withstand wind and other structural loads typically encounter by a roof.
- roof cladding sheet 9 from a structural sheet material, appropriate gauge selection for the sheet, appropriate tensile strength selection for the steel, selection of the width and length of the sheet, and forming the sheet with reinforcing ribs and other formations that strengthen the sheet.
- the over flashing sheets 67 are formed from pressed strip and are provided as a first stage waterproofing on the hips of the roof. As is described further below, the under flashing sheets 69 which are positioned beneath and covered by the over flashing sheets 67 provide a second stage waterproofing on the roof hips. The over flashing sheets 67 may also be formed to contribute to the aesthetic appeal of the roof. As can be seen in Figure 4, the lower arrow-head end of each over flashing sheets 67 includes an end section that has a plurality of openings 107 that allow the discharge of water flowing downwardly along the under flashing sheets 69.
- the roof starter sheets 11 are provided as a transition between the gutter 7 and the first line of roof cladding sheets adjacent the gutter 7.
- each starter sheet 1 1 is an elongate element that is roll-formed or press-formed from steel strip and includes parallel sides 45 and parallel ends 47.
- the starter sheet 11 may be any suitable length and any suitable width.
- the starter sheet 1 1 includes a wide, flat central pan section 97, a slightly inclined lip 99 on the gutter-side, and an upwardly and inwardly curved lip 101 on the roof side.
- the lip 101 is formed as a barrier to water flow up the roof into the roof space.
- the roof starter sheets 11 and the under flashing sheets 69, 71 for the hips, valley, and barge board sections of the roof that are shown in Figures 7 to 10 and 13 are also important structural elements of the invention that contribute to the "structural" roof cladding on the roof.
- the under flashing sheets 69, 71 and the starter sheets 1 1 are also important waterproofing elements of the invention.
- waterproofing is a significant technical issue for horizontally extending roof cladding sheets at the ends of the sheets at hips, valleys, and barge board sections of roofs, particularly in situations where rain sheets across roofs.
- the under flashing sheet 69 shown in Figures 7 and 8 is formed to be used as an under flashing element for a section of a hip of the roof of Figures 1 to 4 or as an under flashing element for a section of a valley of the roof of Figures 1 to 4.
- FIGs 7 and 8 illustrate the under flashing sheet 69 in an orientation for use as an under flashing element for a section of a hip of the roof. This use of the flashing element 69 is further illustrated in Figure 13.
- the flashing sheet 69 is a structural element that contributes to the "structural" roof cladding of the roof. In this regard, the flashing element 69 is fastened directly to the roof frame, and the ends of the roof cladding sheets 9 are positioned on and secured directly to the flashing element 69 - see Figure 13.
- the under flashing element 69 is an elongate element that is roll-formed or press-formed from steel strip and is curved in transverse section and includes parallel sides 75 and parallel ends 77.
- the flashing element 69 may be any suitable length and any suitable width.
- the flashing element 69 includes a central convex top wall section 85 and a plurality of parallel ribs 81 and troughs 83 extending along the length of the element 69. There are two troughs 83 on each side of the central top wall 85. There may be any suitable number of troughs 83.
- the combination of the ribs 81, troughs 83 and curved transverse section contribute to making the flashing element 69 a structural element to take the structural loads associated with walking on the flashing element 69 as well as the nearby roof sheets 9.
- the troughs 83 of the flashing element 69 define channels for water flow.
- the arrangement is such that, when positioned as part of the roof, water that flows horizontally along the roof cladding sheets 9 will flow into the troughs 83 and then downwardly to the gutter 7. Having multiple troughs 83 provides a higher level of assurance that all water flowing onto the flashing element 69 will be captured and directed downwardly in the troughs 83 to the gutter 7.
- the flashing element 69 when used as an under flashing element for a section of a valley of the roof, the flashing element 69 will be used in the reverse orientation to that shown in Figures 7 and 8 as a concave element.
- the ribs 81 shown in Figures 7 and 8 define troughs and the troughs 83 shown in Figures 7 and 8 define ribs.
- the under flashing sheet 71 shown in Figures 9 and 10 is formed to be used as an as under flashing element for the barge board section of the roof.
- the under flashing sheet 71 is a structural element that contributes to the "structural" roof cladding of the roof.
- the under flashing element 71 is fastened directly to the roof frame, and the ends of the roof cladding sheets 9 are positioned on and secured directly to the flashing element 71 - in a similar way to that shown in Figure 13 for the under flashing element 69.
- the under flashing sheet 71 is an elongate element that is roll-formed or press- formed from steel strip and includes parallel sides 87 and parallel ends 89.
- the under flashing element 71 may be any suitable length and any suitable width.
- the flashing element 71 includes two parallel ribs 91 and two troughs 93 extending along the length of the element 71.
- the flashing element 71 also includes a downturned lip 95 that, in use is positioned against the barge board of the gable end of the roof.
- the combination of the ribs 91, the troughs 93 and the lip 95 contribute to making the flashing element 71 a structural element to take the structural loads associated with walking on the flashing element 71 as well as the nearby roof sheets 9.
- the troughs 93 of the under flashing element 71 define channels for water flow.
- the arrangement is such that, when positioned as part of the roof, water that flows horizontally along the roof cladding sheets 9 will flow into the troughs 93 and then downwardly to the gutter 7. Having multiple troughs 93 provides a higher level of assurance that all water flowing onto the flashing element 71 will be captured and directed downwardly in the troughs 93 to the gutter 7.
- the roof starter sheet 1 1 between the gutter 7 of the roof and the first line of roof cladding sheets 9 adjacent the gutter 7 includes a reinforcing rib 37 extending along one side of the sheet and a flat section 41.
- the downturned lip 27 of each roof cladding sheet 9 in the first line of roof cladding sheets overlies the reinforcing rib 37 of the flashing sheet 1 1 and the flat section 41 of the flashing sheet 11 extends over the channel defined by the gutter 7.
- the reinforcing rib 37 of the flashing sheet 1 1 forms a convenient attachment location for the roof cladding sheets 9 in the first line of roof cladding sheets.
- the reinforcing rib 37 also prevents any water that is blown under the first line of roof cladding sheets from entering the roof cavity.
- the roof starter sheets 11 are positioned on the roof frame so that the slightly inclined lip 99 extends over the channel defined by the gutter 7.
- the starter sheets 11 are secured directly to the roof frame via suitable fasteners (not shown).
- the flashing sheets 69, 71 are positioned as required on the hips, valleys and barge boards of the roof frame and are secured directly to the roof frame via suitable fasteners (not shown) to the hip rafters 63 and the valley rafter 65.
- a first line of roof cladding sheets 9 is positioned so that the downturned side formation 27 of each sheet overlies the upwardly and inwardly curved lip 101 of the roof starter sheets 1 1.
- the roof cladding sheets 9 in the first line partially cover the roof frame, with the sheets 9 contacting and being supported structurally directly by the trusses 17 of the roof frame.
- Fasteners 103 secure the sheets 9 directly to the trusses 17.
- the lengths of the sheets 9 is selected so that the ends of the sheets 9 extend at least partially across and thereby overlie the flashing sheets 69, 71.
- the overlap ensures that water flowing horizontally across the roof is discharged into the troughs 83, 93 of the flashing sheets 69, 71.
- the upturned side formations 25 of the roof cladding sheets 9 in this first line provide effective reference points for locating the next line of roof cladding sheets 9 on the roof frame.
- a second line of roof cladding sheets 9 is positioned on the roof frame.
- the downturned side formation 27 of each roof cladding sheet 9 in the second line of sheets is positioned to overlie the upturned side formations 25 of the roof cladding sheets 9 in the first line of sheets and thereby provide continuous coverage at the overlap.
- the upturned side formations 25 of the roof cladding sheets 9 in the first line of sheets cooperate with the downturned side formations 27 of the roof cladding sheets 9 in the next line of sheets to locate the next line of sheets 9 on the roof frame.
- Each successive line of roof cladding sheets 9 is installed in the same way up the roof frame to the ridge rafter 61 of the roof.
- roof cladding sheets 9 are installed on both sides of the ridge rafters 61 shown in Figure 1, ridge caps (not shown) are positioned on the ridge rafters 61 to complete the installation of these sections of the roof.
- roof cladding sheets 9 are installed on both sides of the valley section shown in Figure 1, optional over-flashing sheets (not shown) are positioned on the flashing sheets 69 on the roof valley to complete the installation of this section of the roof.
- roof cladding sheets 9 that are made from a structural sheet as defined in Australian Standard AS 1562 Part 1 or 2, it can readily be appreciated that the invention is not limited to this sheet material.
- the cladding sheets 9 may be made from any suitable material in terms of material selection and structural capability.
- a flashing sheet 69 that is formed to be used as an under flashing element for a section of a hip of a roof or as an under flashing element for a section of a valley of the roof, it can readily be appreciated that the invention is not limited to interchangeable elements and extend to different profiles for the hip and valley applications.
- the embodiments of the invention described in relation to the Figures may include solar roof panels and to arrangements that provide alternative functionality (acoustics, thermal storage, fire solutions) with or without solar functionality.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Seal Device For Vehicle (AREA)
- Paper (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ723398A NZ723398A (en) | 2014-02-18 | 2015-02-18 | A roof |
AU2015221413A AU2015221413A1 (en) | 2014-02-18 | 2015-02-18 | A roof |
AU2019204459A AU2019204459B2 (en) | 2014-02-18 | 2019-06-25 | A Roof |
AU2021261963A AU2021261963B2 (en) | 2014-02-18 | 2021-11-05 | A Roof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2014900513 | 2014-02-18 | ||
AU2014900513A AU2014900513A0 (en) | 2014-02-18 | A Roof |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015123721A1 true WO2015123721A1 (en) | 2015-08-27 |
Family
ID=53877432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2015/000088 WO2015123721A1 (en) | 2014-02-18 | 2015-02-18 | A roof |
Country Status (3)
Country | Link |
---|---|
AU (3) | AU2015221413A1 (en) |
NZ (1) | NZ723398A (en) |
WO (1) | WO2015123721A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2258078A (en) * | 1940-01-22 | 1941-10-07 | James D Tennison | Roof valley |
US3225726A (en) * | 1962-03-01 | 1965-12-28 | Jr Alfred A Tennison | Anti-splash roof valley |
US3264790A (en) * | 1964-01-30 | 1966-08-09 | American Metal Climax Inc | Two-piece valley flashing |
WO1981003196A1 (en) * | 1980-04-28 | 1981-11-12 | Plannja Ab | Roofing sheet and foof construction comprising of such sheets |
EP0115968B1 (en) * | 1983-02-10 | 1987-06-03 | Australian Design Marketing Pty. Ltd. | Cladding element |
WO1988001328A1 (en) * | 1986-08-22 | 1988-02-25 | Brothers, Sarah, Agnes | Cladding system |
US5295338A (en) * | 1992-01-08 | 1994-03-22 | Alcan Aluminum Corporation | Building panel assembly |
GB2334980A (en) * | 1995-11-23 | 1999-09-08 | Hambleside Danelaw Ltd | Roof valley strip |
DE19912134A1 (en) * | 1999-03-18 | 2000-09-21 | Kurt Schade Gmbh & Co Ing | Covering for groove channel between two abutting inclined surfaces of roof which in area of groove has sub-structure comprising roof rafter in which is groove |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4301628A (en) * | 1978-12-14 | 1981-11-24 | Lowe Colin F | Frameless metal building and building components |
DE4339800C2 (en) * | 1993-11-23 | 1996-04-18 | Otto Breitenbach | Ventilated aluminum roof made of aluminum slat profiles on aluminum lens supports with rubber piping |
-
2015
- 2015-02-18 NZ NZ723398A patent/NZ723398A/en unknown
- 2015-02-18 WO PCT/AU2015/000088 patent/WO2015123721A1/en active Application Filing
- 2015-02-18 AU AU2015221413A patent/AU2015221413A1/en not_active Abandoned
-
2019
- 2019-06-25 AU AU2019204459A patent/AU2019204459B2/en active Active
-
2021
- 2021-11-05 AU AU2021261963A patent/AU2021261963B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2258078A (en) * | 1940-01-22 | 1941-10-07 | James D Tennison | Roof valley |
US3225726A (en) * | 1962-03-01 | 1965-12-28 | Jr Alfred A Tennison | Anti-splash roof valley |
US3264790A (en) * | 1964-01-30 | 1966-08-09 | American Metal Climax Inc | Two-piece valley flashing |
WO1981003196A1 (en) * | 1980-04-28 | 1981-11-12 | Plannja Ab | Roofing sheet and foof construction comprising of such sheets |
EP0115968B1 (en) * | 1983-02-10 | 1987-06-03 | Australian Design Marketing Pty. Ltd. | Cladding element |
WO1988001328A1 (en) * | 1986-08-22 | 1988-02-25 | Brothers, Sarah, Agnes | Cladding system |
US5295338A (en) * | 1992-01-08 | 1994-03-22 | Alcan Aluminum Corporation | Building panel assembly |
GB2334980A (en) * | 1995-11-23 | 1999-09-08 | Hambleside Danelaw Ltd | Roof valley strip |
DE19912134A1 (en) * | 1999-03-18 | 2000-09-21 | Kurt Schade Gmbh & Co Ing | Covering for groove channel between two abutting inclined surfaces of roof which in area of groove has sub-structure comprising roof rafter in which is groove |
Also Published As
Publication number | Publication date |
---|---|
AU2019204459B2 (en) | 2021-08-05 |
AU2021261963B2 (en) | 2023-08-10 |
AU2015221413A1 (en) | 2016-09-08 |
AU2019204459A1 (en) | 2019-07-11 |
AU2021261963A1 (en) | 2021-12-02 |
NZ723398A (en) | 2022-02-25 |
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