AU655961B2 - Leaf and debris screen for roof guttering - Google Patents

Description

AUSTRALIA

Parents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT

ORIGINAL

.NOTICE

1. The specifi!cation bhould describe the Invention In full and the best method of performing it known to the applicant.

2. Tho specification should be typed on as many shoots of good quality A4 International size paper as are necessary and inserted inside this form.

3. The claims defining the Invention mvst start on a new page. If there Is Insufficient space on this form for the claims, use separate sheets of paper.

The words 'The claims defining the invention are as follows* should appear Woore claim 1. After the claims the date and the name of the applicant should appeiar In block lIttWrS 4. This form miust be accompanied by a true and~ exact copy of the description, claims and drawings (if any) and an additionai copy of the claims.

(see Pamphlets explaining formal requirements of specifications and drawings) P/00101 I Regulation 3.2 TO BE COMPLETED BY APPLICANT Nam ofAp~icat~ MICHAEL CARSIW PLUMBING PTY. LTD.

MICHAEL CA~REW Atal Inventor(s): Address for Service: vi&9 O. V 4 Det A "0 lated Provisional Applications: Nos: PK 5 The following statement Is a full description of this invention, Including the best method of performing It known to me:- -1- This invention relates to a leaf and debris screen for roof guttering already installed on the roof of a building.

Leaves and debris entering gutters and spoutings from roofs of buildings has always been an ongoing problem. Continual cleaning of these areas is required to prevent obstruction of rain water run off and blockages of these areas causes flooding and property damage.

There have been many proposals to protect gutters, spouts and roof junctions from entry of leaves and debris but all proposals to date either trap the leaves in the structure of the gutter; require special 0 fittings or only fit limited types of gutters or roofs.

a 0* 15 It is an object of this invnetion to overcome or at least alleviate the foregoing problems by providing a leaf and debris screen for roof guttering, According to the -~sao there is provided a leaf and debris screen for roof guttering, the screen being adapted to be fitted over a guttering already installed on a building roof and comprising a 0 light-weight mesh of woven polymeric material with at pror o S* *least one longitudinal edge thereof providedkwith a \=sefk r iSoUr 0. NP of ro\\ecs.

self-adhesive strip to form an adl sive edge for direct :25 attachment aea4 a bead on an outer edge of roof 0* guttering.

Preferably, the mesh of the screen material is -AL1,+ a woven square mesh of lightweight fibreglass strand of aperture size between 1 to 5 mm. and the strand has a -2multi-filament core of high-strength, low elongation fibreglass coated with stabilized polyvinyl chloride resin.

In one form of the invention applicable to tiled roofs one longitudinal edge of the screen material has a self-adhesive strip thereon for attachement to the guttering bead and the opposite longitudinal edge is non-adhesive and is adapted to be installed on a tiled roof by tucking it under a second row of tiles.

In another form of the invention applicable to non-tiled roofs, both longitudinal edges of the screen material are provided with a self-adhesive strip on the same surface side, one edge is adapted to be adhered onto the bead of the outer edge of roof guttering, the 15 other edge of the screen material is adapted to be adhered to the top surface of a corrugated or sheet metal roof.

Preferably, the adhesive used on the screen is ultraviolet resistant and weather-resistant very high 20 bond VHB adhesive tape +End =-eahesi.v. otrip I.

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Preferably each self-adhesive strip of the screen is a double-sided adhesive strip and is covered by at least one protective strip and is formed from double-sided adhesive tape and one surface of side edges of the adhesive on the adhesive strip on side edges of t( rc\-eCs the screen material is impressed through the material onto a permanent protective strip of polyester-coated aluminium and the double-sided self-adhesive tape on the -3edge strip of the screen material opposite to the edge with the permanent protective strip Chereon is covered by a removable protective strip.

A non-limiting example of a practical embodiment of the invention will now be deribcdwith reference to the accompanying drawings in which: Figure 1 is a plan view of the leaf and debris screen according to the invention.

Figure 2 is an elevational view of the screen 1O with removable protective strip removed to expose the self-adhesive strip on one edge of the screen.

Figure 3 is a perspective view showing application of one form of the invention to a tiled roof.

1 Referring to Figure 1 there is shown a roof gutter screen 1 which is a woven mesh comprising a 000000 fibreglass strand with a fibreglass core coated with ultraviolet UV stabilized polyvinyl chloride resin.

A strip 2 of double-sided, ultra-violet and weatherresistant very high bond (VHB) self-adhesive tape is formed along one or both longitudinal edges of the mesh.

For fixing to a tiled roof, the self-adhesivetape is fixed to one longitudinal side edge of the mesh by pressing the mesh and the tape together through a nip of 25 rollers rc-lleo and preferably so that the adhesive goes right through to the surface of the other side whichis then covered with a permanent protective strip of aluminium coated with polyester resin on the S weather-facing side. In Figure 3 which shows the -4guttering screen of the invention being installed on and over guttering already installed on a tiled roof, the rolled over bead of guttering is first cleaned any grease,oil, dirt or loose particles. The removable protective cover 3 is shown peeled back to expose the adhesive strip 2 on the lower longitudinal edge of the mesh and the lower edge is attahced to the guttering by pressing the strip onto the rolled over bead 4 of the outer edge of guttering 5. The screen is next stretched over the first row of tiles 6 and the upper longitudinal edge 7 of the screen material which is uncoated with any adhesive strip is then tucked under the second row of tiles 6 after being stretched over the first row of tiles 8.

00 a0 15 0 **0*0 The woven gutter mesh of the invention can be provided in or cut into various lengths and widths depending on the type of roof, gutter and application required.

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After the screen is installed along the edges 20 of roof rain water run-off areas, leaves and leaves anddebris will be separated from water entering roof valleys, or other roof junctions, guttering and spouts, and will either fall off or be washed off or be blown away instead of accumulating in guttering and spouts to 25 block downpipes causing overflow problems.

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Claims (17)

1. A leaf and debris screen for roof guttering, the screen being adapted to be fitted over a guttering already installed on a building roof and comprising a light-weight mesh of woven polymeric material with at least one longitudinal edge thereof provided with a self-adhesive strip to form an adhesive edge for direct attachment around a bead on an outer edge of roof guttering.

2. The screen according to claim 1 wherein the mesh is a square mesh of aperture between 1 to 5 mm.

3. The screen according to claim 1 or 2 wherein the woven mesh material is lightweight fibreglass 0e strand. 006 0 0

4. The screen according to claim 3 wherein the strand is a multi-filament core of high-strength, low SO elongation fibreglass coated with stabilized polyvinyl chloride resin.

The screen according to any preceding claim ocSdc^&N.r- e, wherein one longitudinal edge has a self-aedh.ic\strip c*o* thereon and the other the longitudinal edge of the screen material opposite to the at least one oS sc S* longitudinal edge is non-adhesive and is adapted to be fixed to a tiled roof by tucking it under a second row of tiles. 00

6. The screen according to any one of claims 1 to 4 0* wherein both edges of the screen material are provided with a self-adhesive strip, one edge being adapted to be adhered onto the bead of the outer edge of roof -4- guttering, the other edge of the screen material being adapted to be adhered to the top surface of a corrugated or sheet metal roof.

7. The screen according to any one of claims 1 to 6 wherein the adhesive is ultraviolet resistant and weather-resistant very high bond VHB adhesive tape.

8. The screen according to claim 1 wherein the double-sided self-adhesive tape on edge strips of the screen material is covered by at least one protective strip.

9. The screen according to any preceding claim wherein one surface of the adhesive strip on side edges of the screen material is impressed through the material onto a permanent protective strip of polyester-coated aluminium.

The screen according to claim 8 or 9 wherein one surface of the adhesive strip on side edges of the o• Sscreen material has a permanent protective strip of e polyester-coated aluminium thereon and the other surface has a removable protective strip thereon.

11. A leaf and debris screen for roof guttering substantially as hereinbefore described and illustrated in the accompanying drawings. Dated this 26th day April, 1994 MICHAEL CAREW PLUMB PTY. LTD. By Our ent Attorney JOHN L.DAVIES CO. -7-

12. A method of forming a self-adhesive leaf and debris screen for roof guttering comprising attaching a double-sided adhesive tape to one longitudinal edge of light weight mesh of woven polymeric material characterised by removing the backing material from one side of said self-adhesive tape, bringing said tape and longitudinal edge of said mesh into alignment and pressing said tape and mesh together between rollers to effect the secure and aligned attachment of said tape to said mesh.

13. A method according to claim 12 wherein the double-sided adhesive tape is ultraviolet resistant and weather resistant very high bond VHB adhesive tape.

14. A method according to claim 12 wherein the double-sided tape on edge self- adhesive strips of the mesh is covered by at least one protective strip.

A method according to claim 12 wherein one surface of the adhesive strip on side edges of the screen material is impressed through the material onto a permanent protective strip of polyester-coated aluminium.

16. A method according to claim 12 wherein one surface of the adhesive strip on 15 side edges of the screen material has a permanent protective strip of polyester- coated aluminium thereon and the other surface has a removable protective strip thereon.

17. A method according to any one of claims 12 to 16 substantially as hereinbefore described. DATED: 13 October 1994 CARTER SMITH BEADLE Patent Attorneys for the Applicant: MICHAEL CAREW PLUMBING PTY. LTD. WypjWTPI:# CLC 13 dobcr 1994 ooooo ABSTRACT A DEVICE FOR SCREENING LEAVES AND DEBRIS FROM GUTTERS SPOUTS AND ROOF JUNCTIONS IS DISCLOSED. THE DEVICE IS A WOVEN MESH MATERIAL 1. WITH AN ADHESIVE STRIP 2. AT ONE END OF THE MESH MATERIAL. THE ADHESIVE STRIP 2.IS FIXED TO THE GUTTER 5. THE MESH 1 SPANS THE AREA TO BE PROTECTED AND FIXES TO THE ROOF BY TUCKING THE MESH 1 UNDER THE SECOND ROW OF TILES 6 AT POSITION 7 BY USING THIS DEVICE OVER THE AREA TO S...l0 BE PROTECTED THE GUTTERS SPOUTS AND ROOF JUNCTIONS WILL BE KEPT CLEAR OF LEAVES AND DEBRIS e s 0 eoooe o* 0 9 e* 0