GB2277372A - Roof ventilators - Google Patents
Roof ventilators Download PDFInfo
- Publication number
- GB2277372A GB2277372A GB9308084A GB9308084A GB2277372A GB 2277372 A GB2277372 A GB 2277372A GB 9308084 A GB9308084 A GB 9308084A GB 9308084 A GB9308084 A GB 9308084A GB 2277372 A GB2277372 A GB 2277372A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- ventilator
- ventilator strip
- central portion
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 210000003195 fascia Anatomy 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 claims 1
- 239000011324 bead Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241000257303 Hymenoptera Species 0.000 description 1
- 241000256856 Vespidae Species 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/15—Trimming strips; Edge strips; Fascias; Expansion joints for roofs
- E04D13/152—Trimming strips; Edge strips; Fascias; Expansion joints for roofs with ventilating means in soffits or fascias
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
A ventilator strip (18) comprising a plastics extrusion is engageable between the outer edge of a horizontal soffit board (12) and the vertical rear face of a fascia board (14) in a building structure. The strip (18) includes a vertically disposable front flange having projections to penetrate the rear surface of the fascia board. The strip (18) includes a resilient clip having a leg to engage the outer edge of the soffit board. A central portion of the strip (18) is provided with ventilation apertures (46). The resilient clip enables installation of the ventilator strip between pre-positioned soffit and fascia boards irrespective of minor variations in the pre-positioning and/or the width of the soffit board. <IMAGE>
Description
Title: Ventilator
This invention relates to a ventilator of the type which is usable for example in a house or bungalow construction to permit air to flow into and through a roof space.
It is known to provide soffit ventilators either for installation when the building is in course of construction or as a retrofit into existing soffit boards. In new domestic buildings it is a requirement that soffit ventilation is provided equivalent to the provision of a continuous opening of lOmm width. One known form of soffit ventilator intended for installation during construction of a house or bungalow is of extruded plastic strip-like form comprising a central planar portion, an, in use, forwardly disposed upstanding edge and an, in use, reanvardly disposed channel having an open mouth extending rearwardly of said central portion.The central portion is provided with a plurality of spaced apart generally rectangular ventilation slots and the forward edge is provided with a series of spaced apart apertures whereby the strip may be secured, such as by nailing, adjacent the lower edge of the rear face of a fascia board intended for mounting in a vertical plane.
As a finishing stage in the eaves area of a house, a horizontally disposed soffit board is secured, such as by nailing, at its rearward edge to a batten secured to the outer. wall of the house. The soffit board thus projects horizontally outwardly of the wall in cantilever fashion. The ventilator strip is secured to the rear face of the fascia board before the fascia board is secured in position and the board with its attached ventilator strip is then offered up towards the soffit board so that the open mouth of the channel at the rearward edge of the ventilator strip is engageable about the outer free edge of the soffit board.
The fascia board is then secured in position so that the ventilator strip is positioned in a generally horizontal plane between the outer edge of the soffit board and the rear face of the fascia board.
It will be appreciated that installing a fascia board and attached ventilator strip in the manner described above can be quite difficult. Fascia boards are made of wood and can be in lengths of up to 2.5 metres. They are therefore quite heavy and have to be positioned so as to engage a corresponding length of the ventilator strip channel about the outer edge of the soffit board before the fascia board can be secured to the building. Furthermore, there is little scope for error in initially positioning the ventilator strip relative to the fascia board since adjacent fascia boards must have their lower edges co-planar with one another whilst at the same time the ventilator strip channel must be engageable about the outer edge of the soffit board.Also the width of the soffit board must be reasonably uniformly dimensioned otherwise its outer edge would not be engageable in the ventilator strip channel.
It is an object of the invention to provide a ventilator strip which is easy to fit in position and which can overcome the types of problem referred to above.
In accordance with the invention there is provided an elongate ventilator strip comprising a central portion having a piurality of ventilation apertures therein, and retaining means at or adjacent each edge of said central portion whereby a said strip may be installed in a gap between two spaced apart fixed members with a respective said retaining means engaged with each of said members.
Said retaining means at or adjacent one edge of said central portion of the ventilator strip may comprise a resilient clip engageable with for example an outer edge of a horizontally disposed soffit board. Said retaining means at or adjacent the other edge of said central portion of the ventilator strip may comprise a support element engageable with a rear vertically disposed face of a fascia board spaced from a said outer edge of a soffit board. The said resilient clip of the ventilator strip may be engaged with the outer edge of the soffit board and said support element may be engaged with the vertically disposed rear face of the fascia board in such manner that the clip is positively engaged with the soffit board and the support element is frictionally engaged with the fascia board.
Conveniently the clip extends upwardly from the, in use, upper face of the central portion of the ventilator strip and comprises a first element attached to the central portion and a leg element connected to said first element and extending towards the, in use, upper face of the central portion. Said first and leg elements are conveniently connected together by a bowed resilient element. The leg element and the bowed element together conveniently provide positive location for the ventilator strip relative to a soffit board when the outer edge of the soffit board is engaged with the leg element to displace it against its resilient bias.
The support element of the ventilator strip may comprise a generally planar element at the, in use, forward edge of the central portion of the ventilator strip. Said support element preferably includes a first flange part extending below said central portion and a second flange part extending above said central portion.
In use, the outer faces of said flange parts are engageable with the rear face of a fascia board and conveniently one or both of the outer faces of said flange parts include a formation engageable to penetrate into the rear face of the fascia board when the ventilator strip is installed between said rear face and the soffit board.
Conveniently the ventilator strip is formed as a plastics extrusion such as for example of UPVC. The said support element and the said resilient clip comprise integral parts of Ahe extrusion. The said ventilation apertures are conveniently stamped out of the central portion of the extruded ventilator strip and conveniently said apertures are of rectangular form having their longitudinal axes inclined at an angle, typically 45 , to the longitudinal axis of the ventilator strip.
Other features of the invention will become apparent from the following description given herein solely by way of example with reference to the accompanying drawings wherein:
Figure 1 is a somewhat diagrammatic perspective view of a ventilator strip constructed in accordance with the invention installed in position between a soffit board and a fascia board of a building,
Figure 2 is an end elevation of the ventilator strip shown in Figure 1, and
Figure 3 is an end elevation of an alternative embodiment of ventilator strip.
In Figure 1 of the drawings there is shown an eaves area of a building comprising an outer wall 10 of the building, a horizontally disposed soffit board 12 extending outwardly of the building from the wall, and a vertically disposed fascia board 14 carrying rainwater guttering 16. A continuous gap is provided between the outer edge of the soffit board and the rear face of the fascia board wherein there is installed a ventilator strip i8 constructed in accordance with the invention.
The ventilator strip 18 comprises an elongate plastics extrusion, such as for example of UPVC, and has an as-extruded profile as shown in Figure 2.
In the orientation shown in Figure 2, the extrusion comprises a vertically disposed support element 20 at one edge of a horizontally disposed planar central portion 22 of the strip. An integral resilient clip 24 extends above the upper surface of the strip 18 and has a vertically disposed first element 26 extending from the upper surface of the strip, a bowed element 28 and a leg element 30 which extends downwardly back towards the upper surface of the strip at that side of the element 26 remote from the central portion 22. The leg element 30 comprises two planar parts, an upper part 32 extending downwardly and forwardly of the strip and a lower part 34 extending downwardly and rearwardly towards a coplanar rearward extension 36 of the portion 22 whereby the clip as a whole has a generally R shaped profile when in its relaxed condition as shown in Figure 2.
The lower part 34 of the leg element of the clip is provided with a continuous bead 38.
The support element comprises a first part 40 extending above the
central portion 22 of the ventilator strip and a second co-planar part 42 extending
for a short distance below the central portion 22. The forward top edge of the
upper part 40 of the support element comprises a continuous pointed bead 44.
The central portion 22 of the ventilator strip is provided with a plurality of spaced apart generally rectangular ventilation apertures 46 (see Figure
1) having parallel longitudinal axes inclined at an angle, typically at an angle of 45 , to the longitudinal axis of the ventilator strip.
The central portion 22, the support element 20 and the first element 26 of the clip 24 are extruded to a thickness which is slightly greater than the
thickness of the bowed and leg elements 28 and 30 of the clip and typically the dimensions are of the order of 1.7mm for the support element, central portion and first element of the clip and of the order of 1.0mm for the bowed and leg elements of the clip. Thus the bowed and leg elements of the clip are more readily deformable than the remainder of the clip and ventilator strip and provide resilience to the clip whereby the ventilator strip as a whole may be installed as shown in Figure 1 of the drawings.
A continuous length of ventilator strip 18, for example a length of the same length as a fascia board or more, can be continuously installed in the gap which exists between the rear face of the fascia board 14 and the outer edge of the soffit board 12. To achieve such installation the ventilator strip is inserted at an angle to the horizontal so that the bowed element 28 and the upper paIt 32 of the leg element of the clip are located above the soffit board 12 whereby upon upward pressure of the ventilator strip to bring the central portion 22 thereof into a generally horizontal plane and the support element 20 into engagement with the rear face of the fascia board, the lower part 34 of the resilient clip will be deformed from the condition shown in Figure 2 to that which is shown in Figure 1.In the installed position the ventilator strip 18 will be retained due to the positive engagement of the clip 24 with the outer edge of the soffit board 12 and the frictional engagement of the outer faces of the upper and lower parts 42 and 40 of the support element with the rear face of the fascia board. The pointed bead formation 44 on the support element will, over a period of time, effect a more positive engagement with the fascia board as it penetrates into the wood thereof.
Soffit boards are normally of standard thicknesses and, as shown in
Figure 1 of the drawings, a soffit board 12 of a standard lOmm thickness is shown engaged between the upper surface of the rearward extension 36 of the ventilator strip and the transitional angle between the upper and lower parts 32 and 34 of the leg element 30 of the clip. Alternatively, a soffit board of a standard 6mm thickness may be accommodated between the upper surface of the rearward extension 36 of the ventilator strip and the bead 38 provided on the lower part 34 of the leg element of the clip.
A slightly modified version of ventilator strip in accordance with the invention is shown in Figure 3 of the drawings wherein like reference numerals refer to like parts hereinbefore described. In this embodiment the resilient clip is of a slightly different configuration wherein the upstanding first element thereof comprises a first vertical part 26 of the same thickness as the central portion 22 of the ventilator strip and a forwardly and upwardly inclined second part 48 of the same reduced thickness as that of the bowed element 28 and leg element 30 of the clip. Such a configuration of clip provides a greater resilient effect thereto than that which is provided by the clip of the construction shown in Figures 1 and 2 of the drawings and is particularly useful when the ventilator strip is intended to bridge a larger gap between fascia board and soffit board.For example, the central portion 22 of the ventilator strip shown in Figures 1 and 2 may be of 29mm width whereas the corresponding dimension of the central portion of the ventilator strip shown in Figure 3 may be 45mm. The smaller size of ventilator strip has ventilation apertures therein equivalent to the required lOmm continuous opening whereas the larger size of ventilator strip provides ventilation to the equivalent of a 25mm continuous opening.
A ventilator strip constructed in accordance with the invention can readily be fitted between existing soffit and fascia boards as a continuous ventilator to fulfil building regulations requirements. The ventilation apertures 46 in the central portion 22 of the ventilator strip are so sized, spaced and oriented with respect to the longitudinal axis of the ventilator strip that the strip can fulfil the requirements for providing the equivalent of either a lOmin or 25mm continuous opening. The ventilation apertures are such as to prevent the ingress of snow, rain, birds and large insects such as bees and wasps.
The degree of resilience of the clip 24 of the ventilator strip enables the strip to be installed in a gap which already exists between pre-positioned soffit and fascia boards irrespective of minor variations in the width of the gap due to lack of uniformity in, for example, the width of the soffit board. Relatively long lengths of ventilator strip may be installed by upward pressure into the gap between the soffit and fascia boards, the provision of the lower part 42 of the support element 20 acting to prevent the ventilator strip from overturning during such installation. As already described herein, the ventilator strip is installable in engagenient with a variety of soffit board thicknesses.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Claims (15)
1. An elongate ventilator strip comprising a central portion having a plurality of ventilation apertures therein, and retaining means at or adjacent each edge of said central portion whereby a said strip may be installed in a gap between two spaced apart fixed members with a respective said retaining means engaged with each of said members.
2. A ventilator strip as claimed in claim I wherein said retaining means at or adjacent one edge of said central portion of said ventilator strip comprises a resilient clip engageable with an edge of a horizontally disposed said fixed member.
3. A ventilator strip as claimed in claim 2 wherein said retaining means at or adjacent the other edge of said central portion of said ventilator strip comprises a support element engageable with a vertically disposed surface of another said fixed member.
4. A ventilator strip as claimed in either one of claims 2 or 3 wherein said resilient clip comprises a first element attached to said central portion of said ventilator strip and extending away from an, in use, upper face of said ventilator strip, and a leg element connected to said first element and extending towards said upper face of said ventilator strip.
5. A ventilator strip as claimed in claim 4 wherein said first element and said leg element are connected together by a bowed resilient element.
6. A ventilator strip as claimed in either one of claims 4 or 5 wherein said leg element includes a planar surface engageable with a said edge of a said horizontally disposed fixed member.
7. A ventilator strip as claimed in any one of claims 4 to 6 wherein said resilient clip is disposed inwardly of an, in use, rear edge of said ventilator strip whereby a rear part of a said upper face of said ventilator strip is engageable below a said horizontally disposed fixed member when a said edge of said horizontally disposed fixed member is engaged by said leg element of said clip.
8. A ventilator strip as claimed in any one of claims 3 to 7 wherein said support element comprises a generally planar element disposed at an, in use, forward edge of said central portion of said ventilator strip on that side of said ventilation apertures remote from said resilient clip.
9. A ventilator strip as claimed in claim 8 wherein said support element comprises a first flange part extending below said central portion of said ventilator strip, and a second flange part extending above said central portion.
10. A ventilator strip as claimed in either one of claims 8 or 9 wherein said planar element includes formations engageable to penetrate a said vertically disposed surface of a said other fixed member.
11. A ventilator strip as claimed in any one of the preceding claims wherein said central portion and said retaining means of said ventilator strip are formed integral with one another as a plastics extrusion.
12. A ventilator strip as claimed in claim 11 wherein said ventilation apertures are formed as stampings out of the extruded said central portion of said ventilator strip.
13. A ventilator strip constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
14. A ventilated soffit board installation comprising a horizontally disposed soffit board extending outwardly from a building structure, a vertically disposed fascia board spaced from the outer edge of said soffit board, and a ventilator strip as claimed in any one of the preceding claims engaged between a vertically disposed rear surface of the fascia board and the forward edge of the soffit board.
15. Any novel feature or novel combination of features described herein
and/or in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9308084A GB2277372A (en) | 1993-04-20 | 1993-04-20 | Roof ventilators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9308084A GB2277372A (en) | 1993-04-20 | 1993-04-20 | Roof ventilators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9308084D0 GB9308084D0 (en) | 1993-06-02 |
| GB2277372A true GB2277372A (en) | 1994-10-26 |
Family
ID=10734108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9308084A Withdrawn GB2277372A (en) | 1993-04-20 | 1993-04-20 | Roof ventilators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2277372A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299664A (en) * | 1995-03-31 | 1996-10-09 | Hardware & Systems Patents Ltd | Ventilator |
| US7987649B1 (en) * | 2008-02-01 | 2011-08-02 | Ross Manufacturing, Llc | Vent strip for installation with soffit boards of different thicknesses |
| US20110201266A1 (en) * | 2010-02-12 | 2011-08-18 | Henderson John C | Ventilated Roof Apparatus and Method |
| JP2016113799A (en) * | 2014-12-15 | 2016-06-23 | 倉敷紡績株式会社 | Decorative member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2115920A (en) * | 1982-03-03 | 1983-09-14 | Glidevale Building Prod | Roof space ventilator |
| GB2190740A (en) * | 1986-04-16 | 1987-11-25 | Manthorpe Limited | Soffit ventilator |
| GB2233440A (en) * | 1989-06-22 | 1991-01-09 | Glidevale Building Prod | Eaves ventilator |
| US5035172A (en) * | 1989-05-24 | 1991-07-30 | Alumax Inc. | Roof ventilating apparatus |
-
1993
- 1993-04-20 GB GB9308084A patent/GB2277372A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2115920A (en) * | 1982-03-03 | 1983-09-14 | Glidevale Building Prod | Roof space ventilator |
| GB2190740A (en) * | 1986-04-16 | 1987-11-25 | Manthorpe Limited | Soffit ventilator |
| US5035172A (en) * | 1989-05-24 | 1991-07-30 | Alumax Inc. | Roof ventilating apparatus |
| GB2233440A (en) * | 1989-06-22 | 1991-01-09 | Glidevale Building Prod | Eaves ventilator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299664A (en) * | 1995-03-31 | 1996-10-09 | Hardware & Systems Patents Ltd | Ventilator |
| US7987649B1 (en) * | 2008-02-01 | 2011-08-02 | Ross Manufacturing, Llc | Vent strip for installation with soffit boards of different thicknesses |
| US20110201266A1 (en) * | 2010-02-12 | 2011-08-18 | Henderson John C | Ventilated Roof Apparatus and Method |
| JP2016113799A (en) * | 2014-12-15 | 2016-06-23 | 倉敷紡績株式会社 | Decorative member |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9308084D0 (en) | 1993-06-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |