WO1993002262A1

WO1993002262A1 - Unit for a pipe lead-through of a tile roof

Info

Publication number: WO1993002262A1
Application number: PCT/FI1992/000215
Authority: WO
Inventors: Eero Saikkonen
Original assignee: Sk-Fastening Ltd Oy
Priority date: 1991-07-15
Filing date: 1992-07-13
Publication date: 1993-02-04
Also published as: FI88954C; FI913395A0; FI88954B; AU2313092A; FI913395A

Abstract

The present invention concerns an element for the passage of a pipe through a tiled roof, said element being intended for covering a pass-through opening left in the roof between the roofing tiles and having a passage hole (5) for the pipe to be passed through the roof. The lower side of said element is provided with one or more projections (13, 13', 14) of a break-off design which are removable if necessary so as to thereby achieve a proper distancing of the element from the underlying decking and/or distancing of the element's lower end from a supporting building part underlying the element.

Description

UNIT FOR A PIPE LEAD-THROUGH OF A TILE ROOF.

The present invention relates to an element for adapting a pipe pass-through on a tiled roof, said element being intended for covering a pass-through opening left in the roof between the roofing tiles and having a passage hole for the pipe to be passed through the roof.

The roofing of a building must be adapted to have a pipe pass-through when sewer vent pipes, ventilation outlet pipes, kitchen range vent pipes, etc. are passed through the roof. The FI patent publication 79740 describes a passage structure. This implementation is excellent for, e.g., roofs clad with corrugated sheet metal, while its useability as such, however, is not possible on a tiled roof due to the fixing method employed which makes use of a component mounted by screws onto the roofing material.

Current tiled roofs are today typically clad with roofing tiles fabricated from concrete. Roofing tiles on the market are standardized by their length and width (length 420 mm, width 330 mm), while the height and shape of the tiles can vary between the different manufacturers. Furthermore, differences occur in the lesser technical details such as the number of so-called drip grooves at the lower side of the tile varying from 1 to 3, which affects the effective area of the tile and the number of tiles necessary to cover a given area.

The height of tiles varies widely some tiles being up to twice the height of other makes. A high profile of the tile increases concrete mix consumption and manufacturing cost, while on the other hand gives the tiles an improved look. Persistent attempts have been made to provide a universally applicable pass-through tile for a tiled roof, but the implementations resulting from these efforts have not been functional, not at least in the Nordic climate. Prior-art constructions are generally based on shaping a flashing from sheet lead conforming to the cladding either at the upper or lower end of the tile. An alternative

SUBSTITUTESHEET method has been the use of sheet aluminium flashing and a sealant band tightly applied to the seams of the tile. None of the conventional constructions have been based on the shaping of the pass-through tile element. The pass-through tile element according to the present invention is characterized in that the lower side of the element is provided with one or more projections adapted to be removable if necessary so as permit the adjustment of the element distanced from the underlying deck and/or the distance of the element's lower edge from an underlying support. The element design according to the invention has been started from the requirement that the product as such must be compatible with all conventionally marketed roofing tiles. The greatest obstacle in the shaping of the element has been posed by variations in the seam height between the different tile types. According to the invention the pass- through tile element is produced to have a number of elevating projections that can be broken off as necessary. Use of shaped rubber seals at the upper and lower ends of the pass-through tile elements provides adaptation to differently shaped tile profiles.

One of the basic original concepts in the design of the pass-through tile element according to the invention has been the idea of shaping the upper end of the pass-through tile element as a flat-bottomed trough having an appro¬ priate depth and length to extend straight under the lower edge of the roof tile resting on the upper end of the pass- through tile element. At the upper edge of the pass-through tile element the edge of the trough is bent upward thus permitting it to act as an underside support for the next roof tile above. The lower end of the pass-through tile element can also have a similar profile shaped as a flat plane. The tile element has at the lower edge of its lower end plane a downward directed projection into which a groove for the seal is adapted.

The above-described technical basic concept achieves a pass-through element for roof tiles of different shapes and heights, that is, a universal pipe pass-through tile element or a flashing tile.

The pipe pass-through tile element according to the in¬ vention can be fabricated from a polymer material by injec- tion moulding. Prior art has conventionally employed the vacuum moulding method in which a polymer sheet blank is drawn into the shape of the tile element by way of vacuum and heat. The vacuum moulding method fails, however, to achieve in a controlled manner the drip grooves necessary at the long side edges of the tile element, because this method cannot simultaneously produce the grooves at both edges, one groove to the upper side of the tile element and one groove to the lower side of the element. Besides its inferior dimensional tolerances, the method also fails to produce the different shapes of projections onto the tile element. Therefore, the vacuum moulding method is generally applicable to the fabrication of black coloured elements only. Injection moulding on the other hand offers a free selection of tile element shapes and material thicknesses to correctly match the stresses imposed at different points of the element. Moreover, tile element fabrication in different colours by way of the latter method is easy thus permitting colour matching of the pass-through tile element with the colour of the roofing tiles. The invention is next examined in greater detail with the help of the appended drawings, in which

Figure 1 shows the element according to the invention in a top view and

Figure 2 shows the same element in a bottom view. The upper surface of the body part of the element ac¬ cording to the invention, or the pass-through tile element, is comprised of two offset, parallel, planar parts 1 and 2 at different heights, joined by a slanted planar part 3. The mid-part of the element contains a bulging conical part 4 having a hole 5 for the pipe to be passed through the roof. The upper surface of the pass-through tile element has two drip grooves 6 at one long side edge on the upper side of the tile element and two corresponding grooves 7 at the other long-side edge on the lower side of the tile element. These grooves- and their locations are designed to match the grooves in the roofing tiles. The upper end of the tile element is provided at the edge of the planar part 2 with an upward oriented ridge 8 incorporating a slot for the seal 9. The lower end of the tile element is similarly provided with a downward oriented ridge 10 incorporating a downward oriented slot for a seal 11. The seals 9 and 11 are made of a resilient material such as rubber, for instance. The outer edges of the ridges 8 and 10 and the seals 9 and 11 are shaped in a wavy fashion to correspond to the wavy shape of the roofing tiles. Their shape need not, however, exactly match the shape of the roofing tiles, but rather, a single shape of the pass-through tile element can be designed to match the shapes of different makes of roofing tiles. The edge formed by the planar part 1 of the body part lower end and the ridge 10 contains two recesses 12 matched to receive the valleys of the roofing tile profile waves. (The terms upper end and upper edge of the tile in this context refer to that end and edge which on a pitched roof are located higher, while the terms lower end and lower edge corre¬ spondingly refer to the opposite end of the tile.) The upper end of the tile element, at its lower side, close to its corners, is provided with a set of downward oriented projections 13 and 13' of, e.g., two different heights. Furthermore, the same upper end of the tile element, at its upper side, close to its corners, is provided with support pegs 14 and 14' placed at different distances from the lower end of tile element. All projections as well as those support pegs 14 which are located closer to the lower end of the tile element can be broken off as necessary. The pass-through tile element has holes for screws 15. Each hole is located in a projection 16 extending upward from the upper side of the tile element. When the pass-through tile element according to the in¬ vention is placed on the roof, its height and length can be adjusted to correspond*to the height of the roofing tiles employed by way of the projections 13 and the support pegs 14.

If the projections 13 and 13' are left unremoved, the upper end of the tile element will be maximally distanced from the decking underneath. By breaking off the longer projections, the distancing will be slightly reduced. For minimum distancing, both the longer projections 13 and the shorter projections 13' must be removed. Thus, to attain matching with the roofing tiles of lowest profile on the market, all projections 13 and 13' are removed. Correspondingly, when matching with either the two standard roofing tile types of a higher profile is to be attained, either both projections 13 and 13', or alternatively, only the shorter projections 13' are left unremoved.

The upper ends of the roofing tiles are supported by boards or joists (not shown in the drawing) . Corresponding- ly, the pass-through tile element is supported by its lower support pegs 14. If the pass-through tile element is, however, used with roofing tiles of greater effective length, the support pegs 14 are removed and the pass- through tile element is supported by the upper support pegs 14'. The flat bottom of the trough 2 makes it possible to adapt the lower end of the next roofing tile above the element to a distance from the lower edge of the pass- through tile element that corresponds to the effective length of the roofing tiles. The pass-through tile element according to the invention is placed on the roof among the standard roofing tiles in the same manner as the roofing tiles, namely, by over¬ lapping the edges of the tiles. The lower end of the tile element will overlap the upper end of the next roofing tile below the element, while the long sides of the element will over- and underlap the long sides of adjacent roofing tiles so that the drip grooves on the upper and lower sides of the tiles will be correspondingly aligned over one another.

The seals 9 and 11 -at the upper and lower ends of the pass-through tile element will be tightly pressed against the adjacent over- and underlapping roofing tiles. The shape of the ridges 8 and 10 as well as the shaping and resilience of the seals make it possible to match the pass- through tile element with all roofing tiles on the market without trimming by sawing. The pass-through tile element is fixed to the decking underneath by screws 15.

As the holes for the screws are located in the projec¬ tions 16, water running along the tile element cannot, however, reach the underside of the element via the holes. The ridge 8 prevents water from flooding over the tile element in windy weather.

The recesses 12 at the lower edge of the pass-through tile element give a viewer located at the ground level the impression that the tile element has a similarly wavy profile as the surrounding roofing tiles, although the major part of the lower end of the pass-through element is formed by a planar surface. The upper end of the element remains invisible from the ground level.

Claims

1. An element for* the passage of a pipe through a tiled roof, said element being intended for covering a pass-through opening left in the roof between the roofing tiles and having a passage hole (5) for the pipe to be passed through the roof and the lower side of said element being provided with one or more projections (13, 13', 14) of a break-off design, characterized in that one or more of the projections (13, 13', 14) are removable if necessary so as to thereby achieve a proper distancing of the element from the underlying decking and/or distancing of the element's lower end from a supporting building part underlying the element.

2. An element as defined in claim 1, characterized in that the projections (13, 13') serving for the adjustment of the distancing of the element from the underlying decking are available of at least two different heights on the element.

3. An element as defined in claim 1 or 2, character¬ ized in that the upper end of the tile element, at its lower side, close to its corners, is provided with support pegs (14, 14' ) for supportingly resting the tile element against an underlying building, said pegs being placed at different distances from the lower end of the tile element, and that those support pegs 14 which are located closer to the lower end of the tile element can be broken off as necessary.

4. An element as defined in any foregoing claim 1...3, characterized in that the upper end of the element has an upward oriented slotted ridge (8) capable of receiving a seal (9).

5. An element as defined in any foregoing claim 1...4, characterized in that the lower end of the element has an downward oriented slotted ridge (10) capable of receiving a seal (11).

6. An element as defined in any foregoing claim 1...5, characterized in that the upper end of the element is formed by a planar part (2) with a smooth upper surface shaped so as to form a trough recessed below the other parts of the element.

7. An element as defined in claim 6, characterized in that the lower end of the element is formed by a planar part (1) aligned parallel to and offset from the planar part of the upper end.

8. An element as defined in claims 5 and 7, character¬ ized in that the meeting point of the wall of the downward oriented slotted sealing ridge (10) and the planar part of the element's lower end incorporates recesses (12) matched to receive the valleys of the roofing tile profile waves.

9. An element as defined in any foregoing claim 1...8, characterized in that holes made for fixing screws (15) are located in projections (16) extending upward from the upper side of said element.