GB2053307A

GB2053307A - Roof valley

Info

Publication number: GB2053307A
Application number: GB7919651A
Authority: GB
Original assignee: Clayphan P G
Current assignee: Clayphan P G
Priority date: 1979-06-06
Filing date: 1979-06-06
Publication date: 1981-02-04
Also published as: GB2050483B; GB2053307B; GB2050483A

Abstract

A side wall section (18) for a valley (8) between two mutually inclined, sloping roof areas (2 and 4) comprises a wall portion (20) having, at its upper end, a flange (22) which engages tiles (6) of the adjacent roof area (2, 4). Connected to the wall portion (20) there is a retaining portion (26) for retaining the side wall section (18) in position. The retaining portion (26) has holes (28) and the lower edge of the wall portion (20) has recesses (24) for allowing water to flow from the roof area into the valley. <IMAGE>

Description

1 so GB 2 053 307 A 1

SPECIFICATION

A side wall section for a roof valley This invention relates to a side wall section for a valley between two mutually inclined, sloping roof areas.

Where two sloping roof areas meet one another to enclose an angle of less than 180' between their outer surfaces, a valley is formed between them. This valley must be made watertight.

Conventionally, this is done by laying a row of trough tiles up the valley and filling the gaps between the trough tiles and the edge tiles of the adjacent roof areas with cement mortar. The edge tiles have to be cut at an angle. In more recent times, a length of suitably formed plastics material, possibly reinforced with glass fibres, has been used instead of the trough tiles, but the gap between this material and the edge tiles still needs to be filled with cement mortar.

The operation of filling the gaps with cement mortar should not be conducted if there is any likelihood of rain or frost while the cement mortar is setting. This is inconvenient, particularly in climates where weather condiflons are unpredictable. Furthermore, the cutting of the edge tiles is difficult to do cleanly and accurately, and an unsightly edge often results.

According to one aspect of the present invention there is provided a side wall section for a valley between two mutually inclined, sloping roof 95 areas which are made up of a plurality of roof elements and enclose an angle of less than 180 between their outer surfaces, the section comprising a wall portion having, atone edge, means for allowing the passage of water from one 100 side of the wall portion to the other, there being connected to the wall portion a retaining portion for insertion beneath the roof elements of one of the roof areas to retain the side wall section in position, the retaining portion having means for allowing water to flow past the retaining portion in the direction towards the said one edge of the wall portion.

A side wall section in accordance with the present invention can be used to produce a valley without requiring cement mortar. The side wall sections are particularly suitable where the floor of the valley is constituted by one or more lengths of plastics material which extend beneath the roof elements, which may be tiles, of the roof areas on each side of the valley. Thus water passing between the edge of the roof area and the adjacent side wall section can pass through the means in the retaining portion and at the said opposite edge of the wall portion, into the valley and thence to guttering provided at the eaves of the roof. Preferably, a flange is provided at the edge of the wall portion opposite the means for allowing the passage of water. In use, this flange covers the edge of the adjacent roof areas and conceals the cut edges of the tiles, as well as holding down the edge tiles.

According to another aspect of the present invention, there is provided a structure including two mutually inclined, sloping roof areas which enclose an angle of less than 1801 between their outer surfaces to form a valley between them, the floor of the valley being constituted by at least one valley section which extends laterally beneath the edges of the roof areas, and each side of the valley being constituted by one or more side wall sections as defined above.

For a better understanding of the present invention, and to show how it may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings in which: Figure 1 is a cut- away perspective view of a valley between two roof areas; 80 Figure 2 is a sectional view of the valley of Figure 1; Figure 3 is a side view of a component of the valley of Figures 1 and 2; Figure 4 is an end view of the component of Figure 3; Figure 5 is a top view of the component of Figures 3 and 4; Figure 6 is a perspective view of two components similar to that of Figures 3 to 5, connected together by a connecting element; Figure 7 is a side view of the connecting element of Figure 6; and Figure 8 is a sectional view taken along the line V11-VII in Figure 7.

Figures 1 and 2 show two roof areas 2 and 4 made up of tiles 6. Each of the two roof areas is sloped, being part of a pitched roof, and the two roof areas 2 and 4 are inclined to one another, their outer surfaces enclosing an angle of less than 1800.

Between the two roof areas 2 and 4 there is a valley 8. The floor of this valley is constituted by a suitably shaped valley member 10 which is made from glass reinforced plastics material. The valley member 10 is supported on rafters 12 and has raised edge regions for lying over counter battens 14. There is a layer of roofing felt 16 between the valley member 10 and the rafters 12, this layer of felt 16 lying underneath further layers of felt 17 provided between the tiles 6 and the rafters 12 of the two roof areas.

The sides of the valley 8 are constituted by side wall sections 18 which are illustrated more clearly in Figures 3 to 5. Each side wall section 18 is made of plastics material and comprises a wall portion 20 which, at its top edge, has a flange 22. The bottom edge of the wall portion 20 has recesses 24. At a location between the top and bottom edges, a retaining portion is connected integrally to the wall portion 20. This retaining portion has holes 28 and is inclined to the wall portion by an angle a which is chosen to suit the pitch of the roof in which the side wall section is to be used.

As shown in Figures 1 and 2, the side wall section on each side of the valley 8 is secured in position by nailing the retaining portion 26 to the counter batten on that side of the valley. The valley member 10 lies between the counter batten 2 GB 2 053 307 A 2 14 and the retaining portion 26, and so is also secured in position. The flange 22 lies over the edge of the tiles 6 and acts as a cover to hide any irregularities in the raking cutting of the edge tiles 6. The need to cut tiles accurately and cleanly, which is present when constructing a conventional cemented valley, is avoided, so speeding up the operation and saving labour costs. The flange 22 also serves to hold down the edges of the tiles 6. It will be appreciated from Figure 2 that the distance between the flange 22 and the retaining portion 26 matches the thickness of two tiles 6, and the distance between the retaining portion 26 and the lower edge of the wall portion 20 is approximately equal to the height of a counter batten 14.

Where two lengths of side wall section need to 75 be joined together end to end, a connecting element 30 is used, as shown in Figure 6. This connecting element is shown in more detail in Figures 7 and 8, from which it will be seen that it comprises two spaced strips 32 and 34 which are 80 interconnected by a wall 36. To connect together two lengths of side wall portion 18 (see Figure 6), one of the lengths is fitted into the slot between the two strips 32 and 34 on one side of the wall 36 and the other length is fitted into the slot on the other side of the wall 36. The fit between the lengths of side wall section 18 and the connecting element 30 may be tight enough to hold the two lengths securely together, but it may be necessary to use an adhesive.

When the valley 8 is complete, water running down the roof areas 2 and 4 towards the valley will run under the flange 22 and will pass down between the tiles 6 and the wail portion 20. The water will then flow through the holes 28 in the retaining portion 26, on to the valley member 10.

The water will run down the valley member 10 into the valley 8, passing through the recesses 24.

The water will then run down the valley 8 into the gutter. The holes 28 and the recesses 24 must be 100 large enough to allow silt and other debris to pass through into the valley 8.

The present invention has been described in connection with a tiled roof. However, the side wall section of the present invention can also be used in conjunction with roof elements other than tiles, for example with slates, stone or wood shingling.

Claims

1. A side wall section for a valley between two mutually inclined, sloping roof areas which are made up of a plurality of roof elements and enclose an angle of less than 1801 between their 115 outer surfaces, the section comprising a wall portion having, at one edge, means for allowing the passage of water from one side of the wall portion to the other, there being connected to the wall portion a retaining portion for insertion beneath the roof elements of one of the roof areas to retain the side wall section in position, the retaining portion having means for allowing water to flow past the retaining portion in the direction towards the said one edge of the wall portion.

2. A side wall section as claimed in claim 1, in which the retaining portion is a panel which is integral with the wall portion.

3. A side wall section as claimed in claim 1 or 2, in which the means for allowing water to flow past the retaining portion comprises holes in the retaining portion.

4. A side wall section as claimed in any one of the preceding claims, in which the means for allowing the passage of water from one side of the wall portion to the other comprises recesses formed in the said opposite edge of the wall portion.

5. A side wall section as claimed in any one of the preceding claims, in which the edge of the wall portion opposite the said one edge is provided with a flange for covering one edge of the said one of the roof areas.

6. A side wall section as claimed in any one of the preceding claims, which is made from plastics material.

7. A side wall section substantially as specifically described herein with reference to the accompanying drawings. 90

8. A structure including two mutually inclined, sloping roof areas which enclose an angle of less than 1801 between their outer surfaces to form a valley between them, the floor of the valley being constituted by at least one valley member which extends laterally beneath the edges of the roof areas, and each side of the valley being constituted by one or more side wall sections in accordance with any one of the preceding claims.

9. An assembly as claimed in claim 8, in which at least one of the side walls comprises at least two lengths of the side wall section, the two lengths being joined together.

10. An assembly as claimed in claim 9, in which the lengths of side wall section are joined together by a connecting element having openings into which the two lengths fit.

11. An assembly as claimed in any one of claims 8 to 10, in which the roof elements of each roof area are clamped between the retaining portion and the flange of the respective side wall section.

12. An assembly as claimed in any one of claims 7 to 10, in which the roof elements are tiles.

13. A valley between two-mutually inclined, sloping roof areas substantially as described herein with reference to the accompanying drawings.

Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1981. Published by the Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.

Z