GB2492046A - Flashing with flexible joint - Google Patents

Abstract

A flexible jointed profile used as an alternative to lead flashing comprises two sections 12, 14, coupled together with a flexible joint. One of the two sections 14 is contoured, shaped to match a roof tile or slate or scrolled to a predetermined pattern. The profile may be formed from fiberglass or grp. The contoured or shaped section may be moulded. A method of forming the profile is also provided.

Description

Flashing The present invention relates to a flashing constructed from a recyclable material such as fibre glass.

Flashing refers to thin continuous pieces of sheet metal or other impervious material installed to prevent the passage of water into a structure from an angle or joint.

The most common material used for flashing presently in lead. One problem is that lead, as a natural substance, will run out in 20 to 40 years. As time goes on the price of lead will increase and availability of lead will decrease. Lead also has a high resale value and conseguently there has been increasing incident so theft of the lead from house roofs.

The present invention relates to a need for an alternative to lead flashing, for indoor or outdoor use.

The alternative flashing can be re-cycled and has no re-sale value is unlikely to be stolen.

Furthermore, use of alternative material for flashing may increase the life expectancy of lead.

According to the present invention there is provided a flexible jointed profile made for roof construction.

One embodiment of the invention will now be provided by way of example only, with reference to Figure 1 which is a schematic illustration of fibre glass flashing constructed in accordance with the invention.

Figure 1 illustrates a common dormer construction with a flashing constructed in accordance with the invention; Figure 2 illustrates a typical corner abutment between two different finishes with a flashing constructed in accordance with the present invention; Figure 3 shows a flexible profiled section formed as a cill or head apron and constructed in accordance with the present invention; and Figure 4 shows the profiled section of Figure 3 in use.

Referring first to Figure 1, the present invention provides a flexible jointed profile 1 made of fibreglass or any other suitable re-cyclable material, which, in use, is fixed to the timber of brickwork of a house roof.

The profile 10 is flat on one side and contoured on other to suit any design of tile.

The profile extends to a flat section 12 which, in use, is affixed to the side elevation of the roof.

The profile also extends to a further profiled section 14 to match roof tiles and which, in use, is cut appropriately to suit the tiles.

The profiled section 14 extends to a double profile section 16 to allow the section 16 to be located beneath the fascia or connection to the roof tiles to prevent ingress of water.

Finally the profile includes corner beads or bandages 18 to suit which extend around the corners of the dormer section.

Figure 2 illustrates the profiled section 14 being using in a typical corner abutment between two different finishes. The profile 14 is fixed, in this case, with an angle joint 20 of 90 degrees. In an alternative embodiment the joint is flexible and is finished on site to suit any required angle.

Left and ring profiles are manufactured for use with corner abutments like the one shown in Figure 2. The side of the profile 14 extending to the stepped brickwork 22 is retained using standard retaining means such as stainless steel clips. The joint 20 is finished with morture or mastic. The flat surface 24 of the profile 14 is screwed or otherwise fixed to timber batters 26 or other substructure as required.

Methods of construction of the jointed profile will now be described.

A mould of any shaped roof tile or slate is formed, for example as a plug. A profile is then taken from the plug. The plug may be clear, or, if required, can be finished in any British Standard number colour. A flat section is also manufactured which is then coupled to the profiled section with a flexible joint. This allows the section to be fixed at any angle on site. Side sections or profiles are produced with a bottom lip, which coincides with the same profile as the existing tiles or slate. The profiles are then ready to be fixed on site.

On site, the profiles are out on site to suite the required dimensions. Different methods may be used for such a purpose.

The profiles may, for example, be cut and positioned on and between the tiles or slate then adhered together using adhesive. The adhesive should be flexible, non-shrink, UV resistant and resistant to vibration construction. This can then be finished with a flow coat of any desired or required colour.

Alternatively, the profiles may be cut and positioned on and between the tiles or slate, then a small amount of matt bandage and resin is mixed to joint the profiles on site. On setting a flow coat of any colour can be applied as a finish.

The present invention provides a water tight joint between any angled surfaces. The joint is U.V resistant, has a durable colour finish, and does not stain of tiles or slate.

Figure 3 illustrates a flexible jointed profile in the form of a cill or head apron. The profile is formed as a two part flat section with a fixing section 28 hinged to a wider hanging section 30.

The fixing section 28 is typically has a width of approximately 40 mm.

The hanging section 30 has a lower edge 32 that is scrolled to form a desired pattern. Figure 3(b) shows an alternative embodiment where the lower edge 32 is not scrolled During instalment (as shown in Figure 4), the fixing seotion 28 is seoured to the underside of a window or door oill. Alternatively the fixing seotion 28 may be S scoured to the soffit or any overhang.

Onoe the fixing seotion 28 is scoured, the hanging seotion 30 hangs down from the window/door oill, soffit or overhang.

The hanging seotion 30 may be raised to allow the fixing of materials suoh as oladding, tile hanging or render.

After oompletion of the finishing work, the hanging seotion is lowered and sealed between the soffit, oill or overhang using adhesive mastio.

It will be appreoiated that the foregoing are merely an examples of embodiments and just some examples of their use. The skilled reader will readily understand that modifioations oan be made thereto without departing from the true soope of the inventions.

Claims (8)

1. Claims 1. A flexible joint profile for fixing to the timber work or brickwork of a building during use, the profile comprising a first flat section and a second contoured section, first and second sections being divided by a flexible joint.
2. 2. A profile according to claim 1, wherein the profile is manufactured from fibreglass.
3. 3. A profile according to claim 1 or claim 2 which, in use, is affixed to the side elevation of a roof of the building.
4. 4. A profile according to any one of claims 1 to 3 including corner beads or bandages which extend around the corners of a dormer section of a roof during use.
5. 5. A method of construction of a jointed profile comprising the following steps (a) preparing a mould of a shaped roof tile or slate; (b) preparing a flat profile section; (c) coupling the shaped section and the flat section together with a flexible joint.
6. 6. A method according to claim 5, further comprising the step of preparing side profile sections with a bottom lip which coincides with the same profile as the existing roof tiles or slate and coupling the side sections to the jointed profile.
7. 7. A flexible jointed profile made from fibre glass for use in roof construction comprising a first flat section coupled to a second section with a flexible joint wherein the second section has a lower edge that is scrolled to a predetermined pattern.
8. 8. A flexible jointed profile as hereinbefore described and referred to in the accompanying figures.