EP0187537A2 - Behandlung von Bedachungen - Google Patents

Behandlung von Bedachungen Download PDF

Info

Publication number
EP0187537A2
EP0187537A2 EP85309527A EP85309527A EP0187537A2 EP 0187537 A2 EP0187537 A2 EP 0187537A2 EP 85309527 A EP85309527 A EP 85309527A EP 85309527 A EP85309527 A EP 85309527A EP 0187537 A2 EP0187537 A2 EP 0187537A2
Authority
EP
European Patent Office
Prior art keywords
tile
tiles
roofing
passageways
cavity
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Withdrawn
Application number
EP85309527A
Other languages
English (en)
French (fr)
Other versions
EP0187537A3 (de
Inventor
John Houldsworth Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB858500024A external-priority patent/GB8500024D0/en
Priority claimed from GB858519157A external-priority patent/GB8519157D0/en
Application filed by Individual filed Critical Individual
Publication of EP0187537A2 publication Critical patent/EP0187537A2/de
Publication of EP0187537A3 publication Critical patent/EP0187537A3/de
Withdrawn legal-status Critical Current

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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
    • E04D13/17—Ventilation of roof coverings not otherwise provided for
    • E04D13/172—Roof insulating material with provisions for or being arranged for permitting ventilation of the roof covering
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D7/00—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs

Definitions

  • This invention is concerned with methods of protecting and insulating existing roofs.
  • this invention provides a roofing tile formed from a plastics material having a high density top surface and defining an underneath cavity, the cavity region incorporating strengthening and support members and communicating with the exterior of the tile through passageways in the top and side walls.
  • Such tiles may be laid over an existing roof surface and then a foam-setting insulating material can be injected through the passageways in the top walls of the tiles, this has the effect of bonding and sealing the tiles to the roof surface, and the foam-setting material acts as a heat insulator as well as providing weatherproofing, at least to some extent.
  • the top surface of the tile will be pre-coated with a waterproofing membrane to create a greater degree of weatherproofing.
  • the strengthening and support members will be ribs dividing the cavity into separate regions. These ribs could extend from the centre to the four corners of a square or oblong tile to define four essentially triangular separate cavity regions.
  • the support members will then preferably include a central boss extending down to the base level of the tile. Greater support can be achieved by a larger number of radiating ribs, which need not necessarily be linked to the side walls on a central boss.
  • the through passageways in the side walls should terminate in cavities formed in the outer surface of the side walls. Excess injected foam-setting material can then pass into these cavities to ensure the sealing of any gaps between adjacent tiles and bonding together of adjacent tiles.
  • the cavity (or separate regions thereof) of the tile is ideally,defined by a top wall surface which internally slopes upwardly from the centre to the edges of the tile. Injected foam-setting material will then tend to expand upwardly and outwardly to ensure spread of the foam-setting material within the cavity.
  • the high density top surface of the tile may be a separate sheet bonded to the remainder of the tile formed from a lower density plastics material, or the two parts could be formed in separate stages of a forming operation from plastics materials. In any event part or all of the tile may be formed from a foamed plastics material.
  • the tile top surface may with advantage incorporate a decorative pattern or shaping to represent a conventional roofing tile member.
  • the base of the tile can, if necessary, be shaped to fit a corrugated or other non-planar existing roof surface.
  • the tiles will naturally need to be fixed in place on the existing roof surface and rather than achieving this by applying an adhesive to the existing roof surface it may be preferable to provide the under-surfaces of the side walls of the tile with a contact adhesive which can, for example, be covered by a removable backing strip.
  • the invention also extends to a method of covering an existing roof surface which comprises laying roofing tiles of this invention of the form as defined above in an abutting side-by-side relationship and injecting a foam-setting plastics material through the passageways in the top walls of the tiles to fill the underneath cavities.
  • the foamed material is ideally a polyurethane foam. Ideally the foamed material will be injected by an injection gun set to inject a predetermined quantity sufficient to fill the underneath cavity or separate cavity region-of one tile. The passageways through the top walls of the tiles can be plugged with portions of dowelling formed from polyurethane or other convenient plastics material after injection of the foamed material.
  • Special tiles may be formed having a predetermined shallow pitch on the top surface from one side to the other.
  • a series of tiles of this type having varying thicknesses may be laid side-by-side to define a pitch to the roof surface eventually formed by the laid tiles.
  • a special central tile forming a ridge on its top surface may be used to form a new roof surface having a pitch face sloping down on both sides from the special ridged tile.
  • spacer tiles may be provided for fixing to a roof surface prior to the application of a standard roof tile, some at least of the spacer tiles being formed with a predetermined shallow pitch on the top surface from one side to the other. Additional spacer tiles of constant thickness could be used in association with the pitched spacer tiles to achieve a build-up in height as one progresses from one side of a proposed slope to the other. It is envisaged that the spacer tiles of constant or pitched shape should have no enclosing top wall so that cavities will pass directly through from the top to the bottom of the spacer tiles so as to communicate with the enclosed cavities on the under-surfaces of the standard tiles which will be laid on top of the spacer tiles.
  • the tile 1 shown in Figures 1 to 3 has a high density top layer defining a flat top surface 2, the remainer of the tile being formed from a lower density rigid polyurethane foamed material.
  • Four separate cavity regions 4 are defined at the under-surface of the tile by ribs 5 extending to the corners from a central boss 6.
  • Each of the cavity regions 4 communicates with the top surface of the tile by passageways 7 and also further passageways 8 lead from the cavity regions 4 through the side walls 9.
  • the passageways 8 terminate in cavities 10 formed into the side wall surfaces.
  • a contact adhesive strip 11 covered by a removable backing strip which can be taken off on site.
  • the backing strips are removed to expose ihe contact adhesive and the tiles are then set out :ver the roof surface in an abutting side-by-side :elationship. Any remaining gaps may be filled with half or quarter tiles as required.
  • the tiles could have fracture lines to aid in breaking down into such smaller parts. If necessary the array of tiles may be subjected t; the action of a heavy roller so as to create a particular roof fall and/or a generally even surface as the side walls 9 will tend to reduce in height partially where parts of tiles stand proud of the rest.
  • a polyurethane foam is then injected into each of the regions 4 through the passageways 7 and excess foamed material will pass out through the passageways 8 and into the cavities 10 so as to bond adjacent tiles to one another. Excess foam projecting above the surface of the tiles, as at 12 in Figure 3, can be cut off when the foam has set. After foam injection the passageways 7 can be plugged with portions of dowelling formed from polyurethane material.
  • the tiles will have been pre-coated with a waterproofing membrane as part of the original tile manufacture so that the final roof surface will be water resistant.
  • the rigid layer 3 could be of polyvinylchloride providing the waterproofing effect as well as acting as the high density layer.
  • This membrane could, if necessary, extend beyond the edges of the tile so that an overlap could be formed onto adjacent tiles.
  • the spaces between adjacent tiles can be brushed over with a water resistant coating, have an adhesive waterproof strip applied, or be sealed by heat sealing of a compatible waterproof strip, as the final stage of forming the weatherproofed and heat insulating surface of the roof.
  • the modified roof tile shown in Figure 4 incorporates a preferred ribbing construction which gives better overall support for the tile surface.
  • eight ribs 5A radiate out from an open central area which communicates with the exterior through a central single passageway 7.
  • the central boss is omitted.
  • the lower portion 9A of the side walls 9 differs from the remainder of the tile, and is formed from a compressible foamed layer of material. This allows the tile to adjust more readily to uneven surfaces (for example a roof surface provided with chippings) in that the layer 9A will compress where localised projections occur. This could be instead of or in addition to the adhesive layer 11 shown in Figure 2.
  • a modified method of filling the cavities within the tiles utilises an open cell flexible polyurethane foam.
  • this foam will be porous and so any internal pressure which might build up due to vaporisation of trapped moisture, for example, can be relieved through the plug of foam in the passageway 7.
  • Figure 5 shows a vent cap 21 positioned over the passageway 7. Passageways 7 in other tiles could be blocked by an impervious member, such as a plug. Then if the layer 9A is also of a porous nature, relief of pressure which might build up under adjacent tiles can be relieved through the nearest tile carrying a vent cap 21.
  • a flexible under layer for the tiles by incorporating a flexible wall layer 9A and injecting a flexible foam, can achieve a number of desirable effects.
  • surface pressure on the top wall of the tile is reduced (since the lower layer is compressible), and overfill with the foam is less critical.
  • a flexible layer allows for minor roof movements (due to settlement or heat expansion) and a porous layer allows for ventilation.
  • the top layer 3 of the tile may be a moulded sheet of polyvinylchloride, which therefore acts as the waterproofing membrane. Gaps between adiacent tiles can then readilv be covered by strips of polyvinylchloride heat sealed to the tiles.
  • the roofing tiles can be formed with a modified underneath surface, such as that illustrated in Figure 6, where the tile is to be applied to an existing corrugated roof.
  • Other roof shapes may be accommodated in a similar manner by suitably shaped tiles. If there should be a need or desire to apply the tiles to a roof surface with spaces between the tiles, the tiles could be pre-formed with spacer projections as necessary.
  • the tiles may readily be applied to the wall surfaces of buildings in a manner similar to that described above.
  • the tile profile may be pre-formed with any desired wall texture or contoured effect.
  • FIG 7. An insulating and weatherproofed pitched roof structure as applied to an existing flat roof surface 12 is illustrated in Figure 7.
  • This uses pitched tiles 13, spacer tiles 14 and 15 and cover tiles 16.
  • the cover tiles are of generally standard form and thus (as shown in Figures 8 and 9) incorporate a flat top surface 2, cavity regions 4 defined by ribs 5 extending to a central boss 6 and passageways 8 through the side walls 9.
  • the walls 9 are slightly angled to assist the flow of foam injected into the cavities 4 on the under-surface of the tile 16.
  • a single passageway 17 is formed at one corner only of each tile 16 passing through one of the ribs 5.
  • a moulded tubing member 18 passes from the passageway 17 to a junction piece 19 within the central boss 6 having outlets leading into the cornersof each of the four cavities 4.
  • the pitched tiles 13 (as illustrated in Figures 7, 10 and 11) have sides of 1,000mm in length and a maximum height at one end of 35mm sloping down in one direction to a height of 10mm at the other end. It will be appreciated that the relative dimensions in Figure 7 have been distorted to illustrate the intended effect whilst the true shape is more realistically illustrated in the cross-sectional view shown in Figure 11.
  • the pitched tiles 13 are also formed with ribs 5 radiating from a central boss 6 but there is no top wall so that openings 20.are formed which pass completely through the tile 13 which will therefore receive the foamed polyurethane injected into the main tiles 16, in a direct manner.
  • This applies also to the spacer tiles 14 and 15 which, in plan view, are identical in appearance to the pitched tiles 13 as shown in Figure 10 and have the same openings 20 passing all the way through.
  • the spacer tiles 14 are 25mm in height whilst the spacer tiles 15 are 50mm in height. These dimensions, together with those of the pitched tiles 13 enable the height to be increased progressively as the height of the slope increases as illustrated in Figure 7.
  • a special ridge tile 16A which has a slightly longer top surface so as to define an end wall which will be co-extensive with the end walls of the pitched tiles 13 and spacer tiles 14, 15 defining the maximum height of the pitch.
  • a similar pitched roof structure could extend downwardly from the top point so as to define a double pitched roof structure.
  • the special tile 16A could be replaced by a tile defining a ridge with angled surfaces leading down to both sides.
  • tiles used in constructing a covering for an existing roof may be modified in other ways.
  • tiles could be shaped to receive roof vents, double glazed lights and moulded parapet walls enabling safety rails to be mounted to aid future roof access.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Finishing Walls (AREA)
  • Building Environments (AREA)
EP85309527A 1985-01-02 1985-12-30 Behandlung von Bedachungen Withdrawn EP0187537A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8500024 1985-01-02
GB858500024A GB8500024D0 (en) 1985-01-02 1985-01-02 Roofing treatment
GB8519157 1985-07-30
GB858519157A GB8519157D0 (en) 1985-07-30 1985-07-30 Roofing treatment

Publications (2)

Publication Number Publication Date
EP0187537A2 true EP0187537A2 (de) 1986-07-16
EP0187537A3 EP0187537A3 (de) 1987-06-03

Family

ID=26288627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85309527A Withdrawn EP0187537A3 (de) 1985-01-02 1985-12-30 Behandlung von Bedachungen

Country Status (2)

Country Link
EP (1) EP0187537A3 (de)
GB (1) GB2169329A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011053401A1 (en) * 2009-10-28 2011-05-05 Carmen Bellavia Light weight molded roof tile
CN111502132A (zh) * 2020-03-23 2020-08-07 中建五局第三建设有限公司 一种雪场顶棚保温构造及铺设方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2231346B (en) * 1989-04-12 1993-07-14 Jack Irvine Davidson Shaw Improved roofing member
US6206991B1 (en) 1999-05-24 2001-03-27 Fomo Products, Inc. Roof tile construction using sandwiched adhesive
US6581348B2 (en) 2001-06-15 2003-06-24 John P. Hunter, Jr. Seamless foam panel roofing system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277538B (de) * 1963-12-28 1968-09-12 Ertl K G Baustoff Werke Moers Flachdachbelag aus vorgefertigten Betonplatten
DE2103275C3 (de) * 1971-01-25 1973-11-22 Max Dipl.-Ing. 8440 Straubing Gerhaher Begehbarer Dachbelag
DE2742444A1 (de) * 1977-09-21 1979-03-22 Geb Kloepfer Inge Breidenbach Abdeckung fuer flachdaecher
DE3119520C2 (de) * 1981-05-15 1987-03-12 Helfrecht, Manfred, 8598 Waldershof Zusammengesetztes Wärmedämmelement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011053401A1 (en) * 2009-10-28 2011-05-05 Carmen Bellavia Light weight molded roof tile
CN111502132A (zh) * 2020-03-23 2020-08-07 中建五局第三建设有限公司 一种雪场顶棚保温构造及铺设方法

Also Published As

Publication number Publication date
GB2169329A (en) 1986-07-09
EP0187537A3 (de) 1987-06-03
GB8531940D0 (en) 1986-02-05

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