EP1375766A1 - Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative - Google Patents

Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative Download PDF

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Publication number
EP1375766A1
EP1375766A1 EP02425410A EP02425410A EP1375766A1 EP 1375766 A1 EP1375766 A1 EP 1375766A1 EP 02425410 A EP02425410 A EP 02425410A EP 02425410 A EP02425410 A EP 02425410A EP 1375766 A1 EP1375766 A1 EP 1375766A1
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EP
European Patent Office
Prior art keywords
joint
sheets
bituminous
bitumen
membranes
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Withdrawn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
EP02425410A
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German (de)
English (en)
Inventor
Gianvito Cerutti
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.)
Cidieffe Srl
Original Assignee
Cidieffe Srl
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
Application filed by Cidieffe Srl filed Critical Cidieffe Srl
Priority to EP02425410A priority Critical patent/EP1375766A1/fr
Publication of EP1375766A1 publication Critical patent/EP1375766A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/12—Roof covering by making use of flexible material, e.g. supplied in roll form specially modified, e.g. perforated, with granulated surface, with attached pads
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6809—Reverse side strips
    • 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
    • E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof

Definitions

  • the present invention concerns in general the sealing of building coverings, such as roofs, terraces, vertical walls and so on, and more particularly the joints or connection members be applied at breaks in continuity between separate sealing coatings.
  • bituminous membranes also called roofing felts
  • the framework can comprise a continuous yarn or a nonwoven polyester staple fabric and/or a so-called nonwoven glass, or glass fibers.
  • Plastomers can be added to the bituminous mixture such as atactic polypropylene, i.e. having a random structure (so-called APP-bitumen membranes), or elastomers such as block copolymers (so-called membranes of styrol-butadiene SBS bitumen). Due to physical characteristics of the polymer employed, the former are also called bitumen-polymer plastomeric membranes, while the latter are defined as bitumen-polymer elastomeric membranes.
  • bituminous membranes are to be joined together so as to allow a certain expansion or relative displacement without breaking the covering continuity.
  • a known solution provides for forming a membrane "reserve” adapted to compensate the expansions, i.e. an additional section between two separate structures forming a sort of channel or eaves along the covering discontinuity. Nevertheless, this solution cannot be considered satisfactory since inert materials such as foliage, stones and the like filling up the additional membrane section often interferes with or prevents its proper operation.
  • a further drawback derives from the requirement that the joint must fit to a large number of possible covering situations such as particular architectural shapes, volumes protruding from the covering, transitions from a horizontal to a vertical covering, and so on.
  • preformed joints comprising two overlapping sheets of plastic material that are joined together at least along their side edges. At least one of such sheets is shaped or deformed, typically like a circumference arc for allowing expansions of and displacements between the joined coverings. Nevertheless, the. preformed joints of this material are scarcely compatible - particularly in respect of adhesion and expansion - with the bituminous membranes commonly used for sealing building coverings - both horizontally and vertically - and are therefore quite unsatisfactory.
  • connection member between two or more areas of a covering belonging to two or more separate coatings, such a joint being adapted to compensate the relative displacements of the underlying structures and to prevent malfunction of the joints due to inert materials accumulated on the coverings.
  • the invention consists of a method for manufacturing a bituminous joint as claimed in claim 12. Further advantageous features are recited in the dependent claims.
  • the joint according to the present invention overcomes both the laying difficulties and the above mentioned drawbacks since it can be fitted into the expansion areas, and remains always clean thus behaving like the building portions over which it has been laid.
  • the joint Since the joint is of a bituminous or bitumen-compatible material, it is compatible with the flat membranes laid over the buildings, and adheres to them and follows their expansions thus increasing the membranes elasticity.
  • the joint according to the invention is applied at the spacings between separate building structures, so that after the joint has blended and stuck to the membranes, the resulting proofing can follow the building expansion, and since the proofing is not being subjected to stresses, it does not break.
  • the system of the invention provides for a plurality of adapting accessories to impart continuity to the coverings between horizontally-extending and vertically-extending proofings, as well as at corners and recesses of the type commonly used in buildings.
  • a safety member is moreover provided that is positioned above and under the joint for further sealing the contact points between the adapting members and the flat joints.
  • Figure 1 shows a joint or connection member 1 according to the invention of flat (also called linear) type, adapted to join or blend two bituminous membranes 5 and 6 applied to the surfaces of two construction portions 7 and 8, respectively, the joint being located along a slot or spacing 9 between said two building portions.
  • the joint comprises two overlapping sections or sheets 11 and 12 of a material that is compatible with the bituminous membranes, or better is made of the same bituminous material of the membranes, which sheets are shaped (pre-formed) at their centres along a longitudinal direction, with an elongated spacing member 13 fitted therebetween. More generally, both sheets 11 and 12 substantially extend in the same plane and have complementary deformations at their intermediate portions, which define a channel 3 in which at least one elongated spacing member 13 is inserted. Alternatively at least one of the sheets has a deformation.
  • one of the sheets shown by the reference 11 in Fig. 1, shows a concave deformation or recess, while the other, shown by 12, has a convex deformation or prominence.
  • deformations extend along or near the centre line of the sheets.
  • the sheets are adapted to house the spacing member 13, preferably formed as a rod of foam-material, inside the channel 3 formed when they are sealed to one another along their lateral flat edges.
  • the joint 1 is applied in proximity of spacings between separate building structures, spaces provided for allowing expansion, edges or spaces between two separate building structures 7 and 8 and, after blending with and sticking to the existing flat membranes 5 and 6, such joint provides a sealing covering capable of following the expansions of the building structure.
  • the sheets 11, 12 are made of bituminous membranes provided with a framework, and the foam-material spacing member has a diameter comprised between 20 and 100 mm. Since the bituminous or bitumen-compatible sheets are not bearing components, the provision of one or more spacing members between them allows for using an excess of material without this latter becoming flabby or flattened, particularly when the temperature increases or the joint is heated.
  • both the sheets 11 and 12 of bituminous or bitumen-compatible material lie or extend in two substantially orthogonal planes, so that the joint 2 is formed by two strips 21 and 22 which are perpendicular to one another.
  • the deformed portions housing the spacing member 13 are located along the bending between said two strips.
  • This type of joint is also defined as a 90° linear joint or angular (angle) joint.
  • the joint according to the present invention is manufactured either as a single piece having a predetermined length, or in form of a continuous strip wound on a large diameter reel, from which sections of a desired length can be cut.
  • the extension of the discontinuity and/or the sizes of the surfaces to be proofed can require a rather long joint, which is preferably manufactured by "connecting" along a longitudinal direction two of the above disclosed joints.
  • auxiliary joining straps are used, formed by two sheets 31, 34 of bituminous or bitumen-compatible material, that are deformed along their intermediate portion in a manner corresponding to the outer surface of the joint deformation. The two sheets are separated and respectively located under and over the joining line between the two flat joints 1. The additional straps are then blended with and stuck to the joints by heating them.
  • a longitudinal connection is possible between two joints without using additional components.
  • the sheets 11 and 12 are not completely overlapped at their ends, and more particularly, at one of said ends, a section of the sheet 12 is missing, so that the corresponding length of the spacing member 13 is uncovered, while at the other end (the structure of which can be seen in Figure 7 although for a different joint) a corresponding section of sheet 11 is missing and the spacing member is not present. It is pointed out that in the manufacturing operation, both sheets 11, 12 are cut at the same length, but are overlapped in an offset manner and with this joint typology, it is possible to connect two adjacent joints through a "male-female" superimposition at their ends.
  • FIGS 4a-4d illustrate the sealing modalities between the coverings of a terrace 24 and that of a vertical wall 25, in accordance with the present invention.
  • Two flat linear joints are used that are disposed in two planes at 90° to each other and further using joining sheets 41, 44 which are simply the joining straps in the 90° embodiment, i.e. (each) extending in two orthogonal planes and provided with a central concave, respectively convex, deformation also extending with two sections at 90°.
  • the assembly is built by firstly applying the sheet 41 over the corner formed by the wall 25 and the terrace 24, then laying the two flat joints 42 and 41, and then covering the junction line by means of the second sheet 44.
  • Figures 5a-5d illustrate the sealing modalities according to the invention at the corner formed by a structure 26 protruding from a flat surface 27.
  • Two joints are used, namely a joint 52 of linear flat type and a joint 53 of the 90° type that are positioned over the flat surface.
  • the joint assembly further comprises two sheets 50, 54 forming as many joining straps extending in three planes perpendicular to one another. More particularly, the sheet 50 comprises a flat portion 51 with a central concave deformation and a portion 55, which is adjacent to the former and forms a 90° angle with the edge perpendicular to the flat portion. Over the flat portion 51 of the member 50 there are laid the two adjacent joints 52 and 53 and then the second sheet 54 - having a structure similar to that of the sheet 50, but with convex central deformation - is applied to completes the sealing.
  • Figures 6a-6d illustrate the sealing modalities for blending and sticking together two joints of the angular type.
  • the joint assembly comprises a first sheet 61 shaped as a trihedron with three flat perpendicular portions substantially of equal extension, and with a central concave deformation extending along two of the trihedron edges, and a second sheet 64 having a structure similar to that of the sheet 61, but with a convex central deformation extending along two of the trihedron edges.
  • the two right angle joints 62 and 63 are applied over the sheet 61, and then the second sheet 64 with a convex deformation is applied to complete the sealing.
  • the bituminous membrane having a thickness comprised between 2 to 8 mm is formed by a non woven polyester staple fabric, preferably of continuous spunbonded yarn.
  • the spacing member 13 is preferably formed as a single element, nevertheless, it can comprise a plurality of longitudinally distributed spacing members.
  • the elongated spacing member is preferably shaped as a rod of foam plastic material having a stiffness or hardness depending on the properties of the membranes and a diameter comprised between 20 and 100 mm.
  • Two rolls of bituminous membranes of the proper width, (generally between 200 and 1,000 mm) disposed on two loaders facing each other are unrolled to overlap to one another and to form a one-piece member.
  • the two membranes are pulled through a matrix and receive at their centres a tubular foam elastic member preferably of cylindrical shape which acts as a spacing member.
  • edges of the two membranes not separated by the tubular member positioned at the membrane centre are heated so that the two contacting surfaces soften and perfectly blend forming a one-piece member when cooled.
  • the so manufactured joint can be cut at the proper size or rolled as a bobbin on a large diameter support.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
EP02425410A 2002-06-21 2002-06-21 Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative Withdrawn EP1375766A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02425410A EP1375766A1 (fr) 2002-06-21 2002-06-21 Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425410A EP1375766A1 (fr) 2002-06-21 2002-06-21 Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative

Publications (1)

Publication Number Publication Date
EP1375766A1 true EP1375766A1 (fr) 2004-01-02

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Family Applications (1)

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EP02425410A Withdrawn EP1375766A1 (fr) 2002-06-21 2002-06-21 Joint bitumineux préfabriqué pour étanchéifier une couverture et méthode de fabrication relative

Country Status (1)

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EP (1) EP1375766A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2349826B1 (fr) * 2008-08-14 2016-01-06 Spielthoff's Bevrachtingskantoor B.V. Garniture pour cloison
JP2018003494A (ja) * 2016-07-05 2018-01-11 トヨタホーム株式会社 外壁目地の止水構造、及び止水処理方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR675729A (fr) * 1929-04-26 1930-02-13 Joint de dilatation
US2203312A (en) * 1938-07-25 1940-06-04 Celotex Corp Roof construction
CH374381A (fr) * 1961-09-25 1964-01-15 Sogerep S A Dispositif d'étanchéité pour joint de dilatation
US3581450A (en) * 1969-04-18 1971-06-01 Francis J Patry Expansion joint cover
CH529269A (de) * 1970-09-17 1972-10-15 Kunstoff Ag Fugenband
FR2220637A1 (en) * 1973-03-09 1974-10-04 Sika Waterproof plastic strip for gaps in concrete - uses butt-ended sections comprising two flanges joined by hollow hub
EP0528771A1 (fr) * 1991-07-16 1993-02-24 The Bilco Company Profilé de raccordement pour revêtement de toiture
WO2001006072A1 (fr) * 1999-07-20 2001-01-25 William Claudio Bona Systeme d'etancheification de joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR675729A (fr) * 1929-04-26 1930-02-13 Joint de dilatation
US2203312A (en) * 1938-07-25 1940-06-04 Celotex Corp Roof construction
CH374381A (fr) * 1961-09-25 1964-01-15 Sogerep S A Dispositif d'étanchéité pour joint de dilatation
US3581450A (en) * 1969-04-18 1971-06-01 Francis J Patry Expansion joint cover
CH529269A (de) * 1970-09-17 1972-10-15 Kunstoff Ag Fugenband
FR2220637A1 (en) * 1973-03-09 1974-10-04 Sika Waterproof plastic strip for gaps in concrete - uses butt-ended sections comprising two flanges joined by hollow hub
EP0528771A1 (fr) * 1991-07-16 1993-02-24 The Bilco Company Profilé de raccordement pour revêtement de toiture
WO2001006072A1 (fr) * 1999-07-20 2001-01-25 William Claudio Bona Systeme d'etancheification de joint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Preisliste I/87, I/93 Kubidritt Dachsysteme", HASSE, 1 April 1987 (1987-04-01), pages 1 - 4, XP002989942

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2349826B1 (fr) * 2008-08-14 2016-01-06 Spielthoff's Bevrachtingskantoor B.V. Garniture pour cloison
US9440707B2 (en) 2008-08-14 2016-09-13 Spliethoff's Bevrachtingskantoor B.V. Bulkhead seal
JP2018003494A (ja) * 2016-07-05 2018-01-11 トヨタホーム株式会社 外壁目地の止水構造、及び止水処理方法

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