AU7243800A

AU7243800A - Wall cladding guide, support and/or seal

Info

Publication number: AU7243800A
Application number: AU72438/00A
Authority: AU
Inventors: Michael Harkins
Original assignee: James Hardie Technology Ltd
Current assignee: James Hardie Technology Ltd
Priority date: 1999-12-21
Filing date: 2000-12-20
Publication date: 2001-06-28
Anticipated expiration: 2020-12-20
Also published as: NZ502004A; AU783430B2

Description

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AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT

ORIGINAL

Name of Applicants Actual Inventor: Address for Service: Invention Title: JAMES HARDIE NEW ZEALAND LIMITED Michael HARKINS BALDWIN SHELSTON WATERS Margaret Street SYDNEY NSW 2000 WALL CLADDING, GUIDE, SUPPORT AND/OR SEAL The following statement is a full description of this invention, including the best method of performing it known to me/us:- File: 502782-004 JM:SO:AUP1759392 WALL CLADDING GUIDE, SUPPORT AND/OR SEAL TECHNICAL FIELD This invention relates to a guide and/or support and/or sealing system for wall cladding.

BACKGROUND

A commonly used practice in the construction industry, particularly in commercial construction, is the use of cladding to produce a secure surface for painting or applying a textured coating, to produce facades or to produce innovative architectural design features. For example, fibre cement board is a commonly used material for cladding.

In general, manufacturers of cladding, of whatever type, produce their products in easily manageable panels and may provide guidance on how the panel should be installed, particularly having regard to building regulations. However, the builder or construction company is left largely to 20 their own devices in terms of how the panels are in fact installed.

CO°DO

•co• It is important that exterior cladding is secured in a manner which !•"•"minimises the risk of moisture getting in behind the panel and causing damage to the building structure or the panels themselves.

The alignment of panels, spacing between panels, and the means of securing panels with appropriate seals can be time consuming operations and can be prone to error, wasting both time and materials.

Another problem of traditional methods of securing wall cladding to D: a structure is that the seals may be crushed by the cladding being secured firmly to the building frame/structure. Therefore, the effectiveness of the seal may be reduced and water may ingress into the structure, thereby resulting in damage to the structure or cladding.

It is an object of the present invention to provide a guide and/or support and/or sealing means for wall cladding, and a method of guiding, supporting and/or sealing wall cladding, which reduces or overcomes the above mentioned problems, or which at least provides the public with a useful alternative.

Other objects of the invention may become apparent from the following description, which is given by way of example only.

SUMMARY OF THE INVENTION According to one aspect of the present invention is there is provided a cladding support suitable for orienting and/or supporting and/or sealing cladding, the cladding support including a member of substantially rigid material having opposing first and a second faces, the member including on the first face: 0 a ribbed section including at least one longitudinal rib located in a mid region of the first face; and e .at least one longitudinal recess on either side of the ribbed section; wherein the or each longitudinal rib is located and oriented so as to provide an abutment against which an edge of cladding is locatable so as i•.o•to orient the cladding in a particular orientation relative to the cladding support.

Preferably, the ribbed section may include two parallel and spacedapart ribs.

Preferably, the cladding support may include a single recess on both sides of the ribbed section.

S"Preferably, at least one end of the cladding support may include at least one flattened portion, whereby the second face is substantially planar in the flattened portion.

Preferably, a the cladding support may include a flattened portion at each end of the member.

Preferably, the corners of at least one longitudinal side of the cladding support may be removed or omitted.

Preferably, the corners may be removed or omitted from the edge of a recess proximate the ribbed section outwards to-a longitudinal edge of the cladding.

Preferably, the member may be formed from substantially 1mm gauge aluminium.

Preferably, at least one recess on either side of the ribbed portion may include a sealing means located therein, the sealing means adapted in use to form seal between the cladding support and the cladding.

Preferably, a sealing means located in a recess on the lower side of the ribbed portion may include one or more adhesive sealants and the •0020 sealing means located in a recess on the upper side of the ribbed portion may include one or more non-adhesive sealants and not include an adhesive sealant.

Preferably, at least one of the sealing means may extend beyond the ends of the cladding support in use.

According to another aspect of the present invention there is provided an interconnectable wall cladding unit, the unit including a wall cladding panel and a cladding support, the cladding support including a member of substantially rigid material having opposing first and second faces, the member including on the first face: a ribbed section including at least one longitudinal rib located in a mid region of the first face; and at least one longitudinal recess on either side of the ribbed section; wherein an adhesive sealant is provided in one said recess to secure the panel to the cladding support with an edge of the panel abutting the rib, or one of the ribs, or a plurality longitudinally aligned of ribs.

Preferably, a sealing means may be located within a recess on the opposite side of the ribbed section from the adhesive sealant.

Preferably, the sealing means may be a non-adhesive sealant.

According to another aspect of the present invention there is provided a cladding support substantially as herein described with reference to the accompanying drawings.

According to a further aspect of the invention there is provided an interconnectable wall cladding unit substantially as herein described with reference to the accompanying drawings.

Further aspects of the invention may become apparent from the following description, given by way of example only and with reference to the accompanying drawings.

SUMMARY OF THE FIGURES o. *o: •g.o Figures 1A, B: Show a top and bottom view respectively of a portion of a cladding support according to o 25 one aspect of the present invention; Figure 2: Shows a cross-section of the cladding support of Figure 1; Figure 3: Shows a perspective view of the cladding support of Figure 1; and Figure 4: Shows an interconnectable wall cladding unit positioned on a frame, the wall cladding cut away to show a cladding support member.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring to Figures 1A, B, Figure 2 and Figure 3 of the accompanying drawings, a cladding support of the invention which may be used for supporting, sealing and/or positioning or guiding a wall cladding is generally referenced by arrow 1. In the preferred embodiment, the cladding support 1 includes two longitudinal ribs 2, an upper recess 3 and a lower recess 4. However, the number of ribs 2 and upper and lower recess 3, 4 may be varied without departing from the scope of the present invention.

The ribs 2 extend substantially perpendicularly from the surface of the cladding support 1 and extend to a sufficient extent to guide and/or support the cladding support 1 relative to the edge of a sheet of wall cladding 6 (see Figure Each rib 2 extends substantially along the longitudinal length of the cladding support 1.

It will be appreciated that the pair of ribs 2 may be replaced by a single rib. The width of a single rib, or alternatively the spacing between a 20 pair of ribs 2 determined by the required distance between the edges of *0 o the sheets of wall cladding 6. This distance may be dictated by aesthetic ~considerations, although the spacing may also influence the ease of o° oaccessing individual panels for fixing and/or removing. Three or more ribs may be included in the mid section of the. cladding support 1 for aesthetic or structural reasons if required. Furthermore, the ribs may optionally be split into a plurality of longitudinally aligned sections, with a single rib extending substantially along the entire length of the cladding support 1 being the preferred embodiment. The wall cladding 6 would then abut a ~plurality of ribs 2 which are aligned along the longitudinal axis of the cladding support 1.

The ribs 2 provide both a support and guide for the positioning of panels of wall cladding 6. Therefore, a builder can quickly and relatively easily secure the wall cladding 6 to a structure or frame using the ribs 2 as guides and supports. This may save significant time and effort and allow easier alignment of the wall cladding 6.

The or each lower recess 4 is adapted to receive a sealing means 9A (see Figure An adhesive sealant strip located in lower recess 4 is used to secure and seal the wall cladding 6 to one side of the cladding support 1, the edge of the wall cladding abutting a rib 2. In the preferred embodiment, the cladding support 1 is supplied secured to a panel of wall cladding 6, thereby creating an interconnectable wall cladding unit. It will beappreciated that while any sealing means may be used, it is preferable that an adhesive sealant is used in recess 4 to ensure a robust attachment of the wall cladding 6 to the cladding support 1. Where multiple recesses 4 are provided on one side of the ribs 2, multiple types of sealing means may be used, one in each recess 4. Inclusion of the lower recess 4 allows more secure bonding of the adhesive between the wall cladding 6 and the cladding support 1.

The sealing means 9B is a compressible seal, such as a foam or butynol strip and is located within upper recess 3 so as to protrude out from recess 3 to abut wall cladding 6. The sealing means 9B is compressed slightly when the wall cladding 6 is positioned on the cladding o. support 1. By providing a recess 3, rather than applying the sealing oo. means 9B to a planar surface, the sealing means 9B is not crushed by the 0° ~wall cladding 6 in use and a larger volume of elastically resilient material is present, allowing for a larger compression range. It will be appreciated 25 that similarly to lower recess 4, any sealing means may be used and if there are multiple upper recesses 3, then multiple types of sealing means may be used. However, it is preferable that a non-adhesive sealant is used in the or each upper recess 3 to allow for easier application of wall cladding 6.

It will be appreciated by those skilled in the art that by avoiding ol crushing the sealing means 9B and providing a larger volume of sealing means 9 in upper and lower recesses 3 and 4, a more effective and reliable seal is obtained. Furthermore, breaking of the seal due to small movements of the wall cladding, for example due to expansion and contraction with temperature may be prevented.

The recesses 3 and 4 have a depth at least equivalent to the thickness of the material from which the cladding support is constructed.

The cladding support 1 may be constructed from any suitable material known in the art. In the preferred embodiment the cladding support 1 is constructed from aluminium and extruded into the required shape, having a 1 mm gauge.

Referring now to Figure 4, the cladding support 1 is shown secured to two panels of wall cladding 6, which have been diagonally cut away to reveal the cladding support 1 for clarity. The cladding support 1 overlays a vertical sealing member 7 which is secured to a stud 10. Vertical sealing member 7 includes a pair of sealing means 8 extending substantially parallel to the longitudinal axis of strip 7. The sealing means 8 seals the ends of the wall cladding 6 and the end of cladding support 1 and may comprise a butynol strip or other appropriate sealing means known in the art.

To avoid crushing sealing means 8, the end of cladding support 1 may be flattened (not shown) to provide a substantially planar contact surface with the sealing means 8. Crushing may result from the pressure required to adequately seal all surfaces of the cladding support 1, which o :*are at different heights due to the inclusion of one or more recesses 3. By flattening cladding support 1 at its ends, the difficulties of attempting to reliably seal the transition between the recesses and upper surfaces of cladding support 1 are avoided.

In a preferred embodiment, the corners of the upper longitudinal 30 side of cladding support 1 are removed or omitted. It will be appreciated that the lower corner of cladding support 1 may also be removed or omitted, particularly if a non-adhesive sealant is used in recess 4. The removed portion may, for example, be a triangular portion removed from the central side of recess 3 and/or 4 to the upper and lower edges of the cladding support 1. The removed portion allows the sealing means 9A,B to extend past the end of cladding support 1 (not shown) and contact sealing means 8 therefore assisting in preventing water ingress behind the cladding support 1. The corner 11 of cladding support 1 is aligned with the edge of sealing means 8 as shown in Figure 4.

In the preferred embodiment, the cladding support 1 extends substantially along the entire length of the beam or other structure. This provides the advantages of simpler and quicker alignment and securing of one or more panels of wall cladding. However, where required a plurality of cladding supports 1 may be located adjacent to each other. It will be appreciated by those skilled in the art that where a plurality of adjacent cladding supports 1 are used, particular care would be required to ensure adequate sealing between the cladding supports 1.

The wall cladding 6 is secured to the structure or frame in the normal manner, by screws or other fixing means (not shown). The screws may extend through the cladding support 1, but for simplicity and economy, the screws preferably are placed above, below or beside the cladding support 1. Building paper or other liners may be applied in the normal manner prior to securing the wall cladding 6.

Thus there is provided a means and method of guiding, supporting sealing wall cladding that is efficient and simple, saving time and effort on the part of the builders. Furthermore, the provision of recesses in the cladding supports avoids the problem of crushing the sealing means, thereby providing an improved seal.

Where in the foregoing description reference has been made to 30 specific components or integers having known equivalents then those equivalents are herein incorporated as if they were individually set forth.

S Although this invention has been given by way of example with reference to possible embodiments thereof, it is to be understood that modifications or improvements thereof may be made thereto without departing from the scope of the invention as defined in the appended claims.

o• o• oo

Claims

2. A cladding support as claimed in claim 1, wherein the ribbed section includes two parallel and spaced-apart ribs.
3. A cladding support as claimed in either claim 1 or claim 2, wherein the cladding support includes a single recess on both sides of the ribbed section.
4. A cladding support as claimed in any one of claims 1 to 3, wherein, at least one end of the cladding support includes at least one flattened :portion whereby the second face is substantially planar in the flattened portion. A cladding support as claimed in claim 4, wherein the cladding support includes a flattened portion at each end of the member. 30 6. A cladding support as claimed in any one of the preceding claims with the corners of at least one longitudinal side of the cladding support removed or omitted. S7. A cladding support as claimed in claim 6, wherein the corners are removed or omitted from the edge of a recess proximate the ribbed section outwards to a longitudinal edge of the cladding.
8. A cladding support as claimed in any one of the preceding claims, wherein the member is formed from substantially 1mm gauge aluminium.
9. A cladding support as claimed in any one of the preceding claims, wherein at least one recess on either side of the ribbed portion includes a sealing means located therein, the sealing means adapted in use to form seal between the cladding support and the cladding. A cladding support as claimed in any one of the preceding claims, wherein a sealing means located in a recess on the lower side of the ribbed portion includes one or more adhesive sealants and the sealing means located in a recess on the upper side of the ribbed portion includes one or more non-adhesive sealants and does not include an adhesive sealant.
11. A cladding support as claimed in either claim 9 or claim 10, wherein at least one of the sealing means extends beyond the ends of the cladding support in use.
12. According to another aspect of the present invention there is provided gig an interconnectable wall cladding unit, the unit including a wall cladding panel and a cladding support, the cladding support including a member of substantially rigid material having opposing first and second faces, the member including on the first face: a ribbed section including at least one longitudinal rib located in a mid region of the first face; and 30 at least one longitudinal recess on either side of the ribbed section; wherein an adhesive sealant is provided in one said recess to secure the panel to the cladding support with an edge of the panel abutting the rib, or one of the ribs, or a plurality longitudinally aligned of ribs. goi
13. An interconnectable wall cladding unit as claimed in claim 12, wherein a sealing means is located within a recess on the opposite side of the ribbed section from the adhesive sealant.
14. An interconnectable wall cladding unit as claimed in claim 13, wherein the sealing means is a non-adhesive sealant. A cladding support substantially as herein described with reference to the accompanying drawings.
16. An interconnectable wall cladding unit substantially as herein described with reference to the accompanying drawings. DATED this 20th Day of December, 2000 JAMES HARDIE NEW ZEALAND LIMITED Attorney: PAUL G. HARRISON Fellow Institute of Patent and Trade Mark Attorneys of Australia of BALDWIN SHELSTON WATERS *o o