AU675653B2 - A roofing system - Google Patents

Description

IY1 The present invention relates to roofing and, in particular, to a roofing system having a number of elongate roofing panels joined along their longitudinal edges with the panels traversing the slope of the roof.

There are many varied types and styles of roofing systems or roofing tiles. The choice between various styles of roofing systems and tiles to be installed is decided on price, aesthetic appeal, strength and its properties in relation to climatic conditions.

Taking into consideration the above requirements, it is desirable that a roofing system which is preferably made from metal be applicable to sloping roofs.

It is an object of the present invention to provide a rooilng system which is strong, lo easy to install and has aesthetic appeal.

According to one aspect of the present invention there is disclosed a roofing system comprising a plurality of elongate roofing panels, said panels being able to be positioned substantially perpendicular to the slope of the roof, said panels each have a folded inwardly facing flange projecting upwardly from the upper positioned one of said longitudinal edges with a slot being formed between said flange and said panel, and said panels each have a clip means projecting downwardly from the lower longitudinal edge, said clip means fitting over said flange and being at least partially receivable in said slot to clip together adjacent said panels along their longitudinal edges.

One embodiment of the present invention will now be described with reference to 20 the drawings in which Fig. 1 is a cross-sectional view of a roofing system of a preferred embodiment, Fig. 2 is a perspective view of a roofing panel of the roofing system of Fig. 1, o Fig. 3 is a side view of the roofing panel of Fig. 2, Fig. 4 is a perspective view of a hold down clip which is used in the roofing system of Fig. 2, and Fig. 5 is a detailed transverse cross-sectional view of the hold down clip holding down a roofing panel of Fig. 1.

The roofing system as illustrated in Fig. 1 as applied to a roof 1 has a number of *elongate roofing panels 2 which have their longitudinal axes positioned perpendicular to the slope of the roof 1. The panels 2 are attached to the rafters 3 of the roof 1. The panels 2 are preferably roll formed from metal on site or pre-cut to the dimensions of the roof 1. This ensures that the roofing panels 2 extend along the length of the section of roof 1 that the roof panel 2 is positioned. If this is the case, there is no need to splice or join the roofing panels 2 together end-to-end.

However, if the roofing panels 2 are not pre-cut or roll formed on site, it is necessary to splice the panels 2 together at their ends. This splicing is done in the usual manner.

[Priv 1 \00021 :HRW I The roofing panels 2 are preferably rolled formed steel, and at their upper edges 4 each panel 2 has a folded flange 5. The flange 5 projects upwardly from the panel 2 and a slot 6 is formed between the flange 5 and the panel 2.

The panel 2 has a clip 8 at its lower edge 7. The clip 8 has dimensions so that it fits over the folded flange 5 anId its free end 9 fits through the slot 6 and clips into engagement with the free end 10 of the flange 5. The engagement of the ends 9 and secures the panels 2 together and prevents water ingress through the roof 1. The ends 9 and 10 engage in a substantially wave shaped configuration.

Fig. 1 illustrates how a number of roofing panels 2 are formed into a roof 1 with lo clips 8 covering the flanges A hold down clip 11 is illustrated in Fig. 4 and is used to secure one of the panels 2 to the rafter 3 of the roof 1. (Fig. The hold down clip 11 has a flat section 12 with a hole 13 located therethrough. The clip 11 has a bent section 14 which corresponds to the shape of the folded flange 5 of a panel 2. The clip 11 is secured to the rafter 3 by a nail or screw 16. The hold down clips 11 are used at different ones of the folded flanges 5 according to windloads which must be encountered. If the windloads are great, it is possible that the hold down clips 11 are required for every flange 5, while if the windload is low, the hold clip 11 may only be required every third or fourth flange The roofing system 1 of the preferred embodiment does not require the use of the batters to support the roof between the rafters 3 or roof trusses as the flange 5 acts as its own integral batten.

The foregoing describes only one embodiment of the present invention and modifications, obvious to those skilled in the art, can be made thereto without departing from the scope of the present invention.

[Piv 11\00021 :HRW

Claims (4)

1. 2. The roofing system as claimed in claim 1 wherein said system further includes a plurality of hold down clips that are used to secure said panels to rafters of o- said roof.
2. 3. The roofing system as claimed in claim 2 wherein said plurality of hold down clips are securable over said flange and have a securing means passing through a 20 hole in said hold down clip to secure said hold down clip.
3. 4. The roofing system as claimed in claims 2 o- 3 wherein said hold down clips are used at different ones of said flanges. 0* The roofing system as claimed in any one of the preceding claims wherein said roofing panels are roll formed metal and are pre-cut to the dimensions of S 25 said roof.
4. 6. The roofing system substantially as described with reference to the accompanying drawings. Dated 12 December 1996 Spanline Patio Systems Pty Ltd Patent Attorneys for the Applicant SPRUSON&FERGUSON ,,47 [N:\LIBCC]00379:MXL A ROOFING SYSTEM ABSTRACT A roofing system as applied to a roof has a number of elongate roofing panels is disclosed. The roofing panels are positioned with their longitudinal axes perpendicular to the slope of the roof The roofing panels are preferably roll formed steel and have at their upper edges a folded flange which projects upwardly from the panel A slot is formed between the free end (10) of the flange and the panel Each panel has a clip which fits over the corresponding flange and has a free end which fits into the slot and engages lo with the free end (10) of the flange. Fig. 1. o *e* *oe oooo* *e o* *eq o *o IPriv 1]\00021:HRW