GB1573707A

GB1573707A - Roof weathering slate

Info

Publication number: GB1573707A
Application number: GB3172276A
Authority: GB
Original assignee: McAlpine and Co Ltd
Current assignee: McAlpine and Co Ltd
Priority date: 1977-07-27
Filing date: 1977-07-27
Publication date: 1980-08-28

Description

(54) ROOF WEATHERING SLATE (71) We, McALPINE & COMPANY LIMITED, a British Company, of Kelvin Avenue, Hillington, Glasgow, G52 4LF, Scotland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a roof weathering slate, which term is used herein to denote a roofing component having an aperture through which a pipe, conduit or similar channel can pass. Such a slate is normally used in conjunction with a sealing ring which will surround the pipe, conduit or similar channel and form a seal therearound.

When fitting such a weathering slate into a roof, it is necessary that the slate conform to the shape of the adjacent tiles. In the past, weathering slates have usually been formed from copper or lead and, since both these metals are soft and very malleable, conforming them to the shape of the adjacent tiles has prevented little difficulty. If, however, it is desired to form a weathering slate from the cheaper metal aluminium, or an alloy thereof, which are less malleable, considerable difficulty may be experienced in conforming the slate to the shape of the adjacent tiles; in particular, if an attempt is made to vary the width of the ends of the slate to conform with the width of the adjacent tiles, the side edges of the slate tend to become bowed. This invention seeks to provide a tile which will reduce or overcome these problems.

Accordingly, the invention provides a roof weathering slate comprising a metal sheet having an aperture therethrough and an edge portion, the edge portion being slit and/or corrugated so that its length can be varied.

The slate of the invention will, of course, normally be used with a flexible resilient sealing ring which fits within its aperture and seals around a pipe inserted through the aperture. Such a sealing ring is conveniently formed of neoprene rubber.

The edge portion of the slate of the invention may either be corrugated, so that seen edge-on it has a serpentine configuration, and/or it may be slit, the slits preferably being substantially at right angles to the edge. Especially where the edge portion is slit, it is desirable that a flexibly resilient sealing member be provided on the underside of the slate beneath the edge portion.

Such a sealing member may be formed of rubber, preferably neoprene rubber.

Preferred embodiments of the invention will now be described, though by way of illustration only, with reference to the accompanying drawings, in which: Figure 1 is a top plan view of a slate of the invention together with a sealing ring; Figure 2 is an end elevation looking in the direction of arrow A in Figure 1, but with the sealing ring omitted; and Figures 3 and 4 are views corresponding to that of Figure 2 of two further slates of the invention.

The roof weathering slate shown in Figures 1 and 2 comprises a square sheet 1 of annealed aluminium having a central aperture 2 into which is fitted a frusto-conical sealing ring 3 formed of neoprene rubber and having an aperture through which a pipe can be passed. Along one edge of the sheet 1 is provided a corrugated edge portion 4, the latter being best seen in Figure 2.

The slate shown in Figure 3 is generally similar to that shown in Figures 1 and 2 but its edge portion is both corrugated and slit (the slits being indicated diagrammatically by vertical lines). The slate shown in Figure 4 has an edge portion which is only slit and is provided with a sealing member in the form of a 1 mm. thick vulcanised rubber strip underlying the edge portion.

WHAT WE CLAIM IS: 1. A roof weathering slate comprising a

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. (54) ROOF WEATHERING SLATE (71) We, McALPINE & COMPANY LIMITED, a British Company, of Kelvin Avenue, Hillington, Glasgow, G52 4LF, Scotland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a roof weathering slate, which term is used herein to denote a roofing component having an aperture through which a pipe, conduit or similar channel can pass. Such a slate is normally used in conjunction with a sealing ring which will surround the pipe, conduit or similar channel and form a seal therearound. When fitting such a weathering slate into a roof, it is necessary that the slate conform to the shape of the adjacent tiles. In the past, weathering slates have usually been formed from copper or lead and, since both these metals are soft and very malleable, conforming them to the shape of the adjacent tiles has prevented little difficulty. If, however, it is desired to form a weathering slate from the cheaper metal aluminium, or an alloy thereof, which are less malleable, considerable difficulty may be experienced in conforming the slate to the shape of the adjacent tiles; in particular, if an attempt is made to vary the width of the ends of the slate to conform with the width of the adjacent tiles, the side edges of the slate tend to become bowed. This invention seeks to provide a tile which will reduce or overcome these problems. Accordingly, the invention provides a roof weathering slate comprising a metal sheet having an aperture therethrough and an edge portion, the edge portion being slit and/or corrugated so that its length can be varied. The slate of the invention will, of course, normally be used with a flexible resilient sealing ring which fits within its aperture and seals around a pipe inserted through the aperture. Such a sealing ring is conveniently formed of neoprene rubber. The edge portion of the slate of the invention may either be corrugated, so that seen edge-on it has a serpentine configuration, and/or it may be slit, the slits preferably being substantially at right angles to the edge. Especially where the edge portion is slit, it is desirable that a flexibly resilient sealing member be provided on the underside of the slate beneath the edge portion. Such a sealing member may be formed of rubber, preferably neoprene rubber. Preferred embodiments of the invention will now be described, though by way of illustration only, with reference to the accompanying drawings, in which: Figure 1 is a top plan view of a slate of the invention together with a sealing ring; Figure 2 is an end elevation looking in the direction of arrow A in Figure 1, but with the sealing ring omitted; and Figures 3 and 4 are views corresponding to that of Figure 2 of two further slates of the invention. The roof weathering slate shown in Figures 1 and 2 comprises a square sheet 1 of annealed aluminium having a central aperture 2 into which is fitted a frusto-conical sealing ring 3 formed of neoprene rubber and having an aperture through which a pipe can be passed. Along one edge of the sheet 1 is provided a corrugated edge portion 4, the latter being best seen in Figure 2. The slate shown in Figure 3 is generally similar to that shown in Figures 1 and 2 but its edge portion is both corrugated and slit (the slits being indicated diagrammatically by vertical lines). The slate shown in Figure 4 has an edge portion which is only slit and is provided with a sealing member in the form of a 1 mm. thick vulcanised rubber strip underlying the edge portion. WHAT WE CLAIM IS:

1. A roof weathering slate comprising a metal sheet having an aperture therethrough and an edge portion, the edge portion being slit and/or corrugated so that its length can be varied.

2. A roof weathering slate as claimed in Claim 1, having a flexible resilient sealing ring fitted within its aperture.

3. A roof weathering slate as claimed in Claim 2, in which the sealing ring is formed of neoprene rubber.

4. A roof weathering slate as claimed in any of the preceding claims, in which a flexibly resilient sealing member is provided on the underside of the slate beneath the edge portion.

5. A roof weathering slate as claimed in Claim 4, in which the sealing member is formed of rubber.

6. A roof weathering slate substantially as herein described, with reference to and as illustrated in figures 1 and 2, Figure 3 or Figure 4 of the accompanying drawing.