GB2054697A

GB2054697A - Roof lining arrangement

Info

Publication number: GB2054697A
Application number: GB8024274A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-07-30
Filing date: 1980-07-24
Publication date: 1981-02-18
Also published as: IT1128664B; LU82664A1; SE8005278L; SE439513B; FR2462526A1; DE2930898C2; IT8049357A0; BE884540A; FR2462526B1; GB2054697B; DE2930898A1; NL8004186A; CH648375A5

Abstract

A covering element of plastics, metal foil or roofing felt has a trough portion 2 having along one edge a flange 4 and is correspondingly angled along its opposite edge for the trough to locate with and between two adjacent roof battens. The trough 2 accommodates a heat-insulating lining member (3, Fig. 2). Integral with the trough 2 is a cover strip 6 which overlaps and covers the adjacent trough 2 lining member 3. This cover strip is formed with water removal sections 10 and a transverse rib 8 which engages in a groove in the lining member. <IMAGE>

Description

SPECIFICATION Roof lining arrangement This invention concerns a roof lining arrangement comprising heat-insulating lining members which are disposed between roof battens and which rests on a support laid on the roof battens, consisting of preformed inherentlystable troughs which protrude down between the roof battens and which have bent edges extending parallel to the battens and lying on top of the latter, and wherein a respective covering strip extends over each heat insulating lining member stretching from roof batten to roof batten.

In roof lining arrangements of this type, the covering strip is intended to ensure that the accumulation of moisture at the ends of the troughs towards the eaves is avoided. When fibrous materials are used as the insulating materials, these can become saturated with moisture which results in severe impairment of their heat-insulating properties. Accordingly it is especially important to ensure that the penetration of even small amounts of moisture is avoided. It has been shown that despite the overlapping of the edges of the superjacent covering strips and also of the eaves-side edge of each covering strip with the ridge-side area of the covering strip below it, small amounts of moisture can penetrate in unfavourable conditions.

The invention is thus based on the problem of designing the roof lining arrangement in such a way that the heat-insulating lining is protected by simple and economically justifiable means against the penetration of even small amounts of moisture and is not exposed to the effects of moisture.

This problem is solved according to the invention by providing the covering strip, at least parallel to one edge thereof, with a water removal section.

A further development of the invention provides for the water removal section to run in a direction from the ridge to the eaves and comprises a channel which overlaps the upright edge of the adjacent trough of an adjacent covering strip.

Such a water removal section reliably avoids the penetration of moisture and in particular prevents the penetration of fine snow. Any water which does collect on the covering strip is certain to flow down to the eaves without being able to penetrate under adjacent strips at the side.

A further development of the invention provides for that the edge of the covering strip extending parallel to the eaves to have a water-repellent section which overlaps a corresponding section on the edge beneath it of the adjacent trough. The water-repellent section may comprise U-shaped ribs which are moulded outwards and interlock.

Other advantages and features of the invention will be appreciated from the following description of preferred embodiments of the roof lining arrangement of the invention as illustrated in the accompanying drawings, and from the claims. In the drawings: Fig. 1 is a diagrammatic perspective view of a covering element for incorporation into a preferred embodiment of the roof lining arrangement according to the invention; Fig. 2 is a section through a heat-insulating roof lining arrangement incorporating a plurality of the covering elements of Fig. 1; Fig. 3 is a view similar to Fig. 2, but showing a second embodiment of the heat-insulating roof lining arrangement of the invention wherein the heat-insulating lining is provided with ribs between which a weather-protective lining can be inserted;; Fig. 4 is a section taken along the line lV-IV of Fig. 3; Fig. 5 is a perspective view illustrating a further construction of covering element suitable for incorporation into a lining arrangement according to the invention; and Fig. 6 is a fragmentary perspective view, partly in section, showing how four adjacent covering elements of the heat-insulating lining arrangement overlap at a corner.

Referring to Figs. 1 and 2, a first embodiment of the roof lining arrangement of the invention comprises a plurality of covering elements each in the form of a trough 2 (Fig. 1) in which a heatinsulating lining member 3 is laid. The troughs can be of vacuum-formed plastics sheet, but they may be of other materials such as metal foil or roofing felt. Each trough 2 has a plain edge 4 by which it rests on a roof batten 5. At the right hand side in the drawing, there extends, from the trough 2, a covering strip 6 in which there is a transverse depression 8 which engages into a corresponding depression 7 in the surface of the adjacent heatinsulating lining member 3. When tiles (not shown) are used as a weather-protective covering over the top of the illustrated lining arrangement, the lugs of such tiles are engaged into the depressions 8.

As shown diagrammatically in Fig. 1 , the covering strip 6 is formed with a water removal section 10 at each edge which runs in the direction from the roof ridge to the eaves. Each such water removal section consists, for example, of a U-shaped rib moulded upwards, the rib being smaller in dimension, at the one side of the strip 6 than that at the other side, so that the water removal sections of the overlapping covering strips 6 can interlock with one another.

As illustrated in Fig. 2, the successive covering elements are staggered or offset relative to one another down the roof so that each covering strip 6 has a corresponding trough 2 underneath. in addition the covering strip 6 of the covering element which is closer to the roof ridge covers the heat-insulating lining member 3 of the adjacent covering element which is closer to the eaves. On the eaves-side edge of covering strip 6 the illustration in Fig. 2 shows a water-repelient section which comprises a U-shaped upwardlyprotruding moulded rib 12 which extends parallel to the eaves. This U-shaped rib 12 engages with a corresponding inverted U-shaped rib adjacent the edge of the covering strip 6 which connects to the trough 2.

The embodiment shown in Figs. 3 and 4 differs from the embodiment shown in Fig. 2 by the fact that each heat-insulating lining member 22 is formed with a rib 23 on its upper side, which rib 23 is designed for the engagement therewith of the lugs of roof tiles, when such tiles are used as a weather-protective covering. Corresponding to this rib 23 a complementary projection 24 is moulded in the respective covering strip 16. As indicated in Fig. 4, formed in the rib 23 are water drainage channels 25 into which engage grooves moulded in the projection 24. This arrangement ensures that water draining from the covering strip 16 cannot collect behind the rib 23.In the same way as illustrated in Fig. 1 , the covering strips 1 6 are provided with water removal sections 10 at both sides thereof, and these are shaped in such a way that the water removal sections 10 of the adjacent covering strips 1 6 interlock with each other. In addition, as in the form of construction according to Fig. 2, there is also a water drainage section 12 which prevents penetration under the covering strips 16 of moisture and/or fine snow from the eaves.

Fig. 5 is a perspective view of a further embodiment of a covering element suitable for use in a lining arrangement in accordance with the invention. This element comprises a trough 42 bounded on both sides by rims 43, and has at the roof ridge side a plain edge 44 which, when the element is installed, overlaps a roof batten (not shown). A further plain edge 45 overlaps an eaves-side roof batten (also not shown), in the way already described for the embodiment according to Figs. 2 and 3. In the trough 42 is laid a heat-insulating lining member as in the embodiment of Fig. 3. At the eaves side, the trough 42 joins with a covering strip 46, and the corresponding edge is raised upwards in a Ushape. This produces a rib 48 which acts as waterrepellent section. Projections 24, with water drainage channels 25 therebetween, are moulded in the covering strip 46.

In addition, at the eaves-side edge there is another rib 49 which acts as water-repellent profile and projects beyond a corresponding rib 48 of an adjacent similar element at the eaves side (not shown in the drawing). Along one of its sides, the covering strip 46 is provided with a vertically upright edge 50 which is contiguous with the line of the rim 43 of the trough. Along the opposite side of the strip 46 there is a corresponding edge 51 which is, however, provided with a beaded or curved configuration. The edges 50 and 51 of the adjacent elements overlap and together form a water removal section.

Fig. 6 illustrates a corner at which four of the covering elements meet. Edges 43.1 and 43.2 of two troughs 42.1 and 42.2 which lie side by side overlap above the respective heat-insulating lining members 22.1 and 22.2. The heat-insulating lining members 22.1 is covered on its upper.side by covering strip 46.0 of the next adjacent covering element at the roof-ridge side, a part of the relevant heat insulating lining member 22.0 being visible in the figure. In the area where the two heat-insulating lining members 22.0 and 22.1 meet, a U-shaped rib 48.0 is formed, which rib 48.0 is overlapped by a corresponding U-shaped rib 49. The joint between the two adjacent elements is formed in the same way, but is not visible. The two covering strips 46.1 and 46.2 of the elements adjoining the roof ridge overlap the elements on the eaves side, whereby their waterrepellent profiles interlock. In a vertical direction, the fold 51.2 of the right-hand element overlaps the edge 50 of the left-hand element, where a cutout is provided into which the water-repellent profile 49.1 engages. The overlapping in this way of the adjacent elements guarantees and secures a satisfactory flow of water, so that no moisture gets under the covering strip and into the heatinsulating lining.

For the sake of clarity the individual layers of the lining arrangement are illustrated in the drawings as being slightly apart, although in the actual finished roof lining they lie directly on top of one another.

Claims

1. A roof lining arrangement comprising heatinsulating lining members which are disposed between roof battens and which rest on a support, laid on the roof battens, consisting of preformed inherently-stable troughs which protrude down between the roof battens and which have bent edges extending parallel to the battens and lying on top of the latter, and wherein a respective covering strip extends over each heat insulating lining member stretching from roof batten to roof batten, characterised in that each said covering strip, at least parallel to one edge thereof, is provided with a water removal section.

2. A roof lining arrangement as claimed in claim 1, characterised in that the water removal section extends in a direction from the roof ridge to the eaves and comprises a channel which overlaps upright edges of adjacent troughs and adjacent covering strips.

3. A roof lining arrangement as claimed in claim 1 or 2, characterised in that the edge of the covering strip extending parallel to the eaves is provided with a water repellent section which overlaps a corresponding section on the edge beneath it of the adjacent trough.

4. A roof lining arrangement as claimed in claim 3, characterised in that the water-repellent section comprises U-shaped ribs which are moulded outwards and interlock.

5. A roof lining arrangement substantially as hereinbefore described with reference to and as illustrated in Figs. 1 and 2, in Fig. 3 and 4, in Fig. 5 or in Fig. 6 of the accompanying drawings.