EP3816365A1 - Verankerungsschiene und wandverankerungssystem für isolierte wände - Google Patents

Verankerungsschiene und wandverankerungssystem für isolierte wände Download PDF

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Publication number
EP3816365A1
EP3816365A1 EP19205870.9A EP19205870A EP3816365A1 EP 3816365 A1 EP3816365 A1 EP 3816365A1 EP 19205870 A EP19205870 A EP 19205870A EP 3816365 A1 EP3816365 A1 EP 3816365A1
Authority
EP
European Patent Office
Prior art keywords
wall
anchoring
rail
base portion
anchoring rail
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.)
Pending
Application number
EP19205870.9A
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English (en)
French (fr)
Inventor
Bjørn Lykkegaard
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.)
Rockwool AS
Original Assignee
Rockwool International AS
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 Rockwool International AS filed Critical Rockwool International AS
Priority to EP19205870.9A priority Critical patent/EP3816365A1/de
Publication of EP3816365A1 publication Critical patent/EP3816365A1/de
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0803—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements
    • 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
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4178—Masonry wall ties
    • E04B1/4185—Masonry wall ties for cavity walls with both wall leaves made of masonry

Definitions

  • the present invention relates to an anchoring rail and a wall anchoring system for insulated outer building walls.
  • Wall anchoring systems of many kinds are well known, e.g. in relation to securing a brick or masonry outer wall to a substrate or inner wall of the cavity wall in a building structure.
  • the structural backup wall i.e. the substrate or inner wall of the cavity is formed of brickwork, a timber frame, steel frame or concrete structure.
  • wall ties or wall anchors are used as point fixing to connect the inner and outer wall in order to provide the necessary structural integrity of the outer building wall.
  • Wall ties or anchors are typically made of metal, plastic or a combination thereof and they may have different shapes, e.g. rod-like or flat plates.
  • said fixing may comprise line objects, like e.g. holding tracks, or brackets (point fixing) as they are for example used in connection with ventilated façade claddings.
  • insulation boards are preferably provided. These insulation boards may be supported by the wall ties in the cavity.
  • the wall ties or anchors may consist of transverse pins, e.g. wire pieces, which are fixed to the inner wall during its construction.
  • the insulation boards are then positioned between these protruding wires or mounted by penetrating the wires through the insulation board. Either way, this has the disadvantage that the insulation boards are not accurately mounted, and may be dislocated when the wall ties are bended to fit between the brick layers of the outer wall.
  • the insulation may break apart, fall off or holes may be punched out causing thermal bridges.
  • a major disadvantage of these protruding wall ties is that construction workers risk getting hurt when working on a site where cavity walls are under construction.
  • the wall ties often are quite numerous, typically 4-6 pieces per square meter, in order to provide the required strength in the construction to withstand the wind load. By bending the wall ties in order to make them fit with the outer wall construction, the strength of these wall ties is somewhat reduced and there is a risk of some wall ties breaking off.
  • Building requirements generally prescribe a maximum elongation or compression of the wall anchors of 1 mm in the cavity wall. This calls for a high concentration of wall anchors per wall area.
  • the wall ties also constitute thermal bridges in the thermally insulated cavity wall construction, and from this perspective, as few wall anchors as possible is preferred, just as fewer wall anchors reduces the building costs involved, and the installation time is shorter.
  • a masonry anchoring system with an anchoring rail for wall anchor ties is known from US 7,469,511 .
  • the anchoring rails are secured to the inner wall structure by fasteners and possibly accompanied by adhesive.
  • Anchor ties are coupled to the anchoring rail as they bite into the slot formed in the anchoring rail.
  • This system has still the disadvantage that the wall anchor ties constitute thermal bridges in a thermally insulated cavity wall.
  • a wall anchor is disclosed, which is made of a sheet material that is cut into a blank and mounting portions, i.e. the mounting flange and the insulation gripping projections are bent out of the plane.
  • This wall anchor is mounted on the inner wall after it has been raised, preferably together with fitting the insulation slabs.
  • the outer tip of the wall anchor is moulded into the mortar between the bricks during the raising of the outer wall.
  • GB-A-2 111 095 discloses a wall anchor made of a sheet material which is cut into a blank and the insulation gripping projections are bent out of the plane.
  • This wall tie is moulded into the mortar between the bricks during the raising of the inner wall.
  • the outer tip is moulded into the mortar between the bricks during the raising of the outer wall.
  • This wall tie is only useable when the cavity wall includes an inner wall made of bricks that are stacked with an adhesive mortar in between.
  • this wall tie must also be bended to fit into the mortar layer between two brick layers. This could cause the insulation boards to be bended or dislocated.
  • WO2014/187726 an innovative new insulating wall construction is disclosed, where columns made of high density mineral wool fibres are provided as load-carrying columns between which insulation panels are provided.
  • This wall structure is advantageous as it is substantially thermal bridge free and provide excellent thermal insulation characteristics.
  • an outer cladding can be mounted directly onto this wall structure, there may be circumstances where it is desired to use this wall structure in a cavity wall building construction, for instance with a masonry outer wall constituting the outer protective cover of the building.
  • the columns of this wall construction does offer the possibility of mounting for instance wall ties directly onto the exterior facing mounting elements of the columns, but such mounting, in particular when an insulation layer is provided in the cavity of the cavity wall, may damage the wall ties as they become loaded and unloaded due to variations in wind pressure and wind suction forces acting on the outer wall and the softness or resilience properties of the mineral wool insulation material.
  • an anchoring rail and a wall anchoring system suitable for being used in insulated outer building walls of various types, e.g. cavity walls of buildings, comprising a substrate or inner wall, an insulation layer and an outer wall constituting the outer protective cover or cladding layer of such insulated outer building wall, particularly a brick or masonry layer.
  • Said wall anchoring system being easy and fast to install and providing very limited thermal bridges.
  • an anchoring rail according to a first aspect of the invention. Further this object is also achieved by a second aspect of the invention, which is a wall anchoring system for an insulated outer building wall comprising
  • the present invention is concerned with insulated outer building walls, e.g. cavity walls of buildings, comprising a substrate or inner wall, an insulation layer and an outer wall constituting the outer protective cover or cladding layer of such walls.
  • an anchoring and insulation arrangement with an anchoring rail profile, e.g. from steel metal, fixing and securing the insulation in front of the substrate or inner wall of a building, and at the same time securing the outer wall via fixings that are locked in the anchoring rail profile.
  • the anchoring rail profile according to the first aspect of the invention is made special in its shape, so that the rail profile fulfils two functions at the same time:
  • the fixing is fixed/secured by screws or similar means directly onto the anchoring rail profile, specifically its outer surface opposite the base portion.
  • the design of the line fixing is thus adopted to fit the special shape of the anchoring rail profile.
  • the wall anchoring system and the anchoring rail profile according to the invention is advantageous since by the invention it is made possible to provide a wall anchoring system which can be mounted directly onto the insulation, such as mineral wool fibrous insulation, of e.g. a cavity wall, although the insulation is flexible/compressible and not supporting the load-bearing capacity of the system as such.
  • the insulation such as mineral wool fibrous insulation, of e.g. a cavity wall
  • the insulation is flexible/compressible and not supporting the load-bearing capacity of the system as such.
  • the anchoring rail profile according to the first aspect of the invention is made special in its shape, and in a first embodiment the side portions extending perpendicular to the wall plane of the base portion. Furthermore, preferably the anchoring rail profile is made of one strip of material, such as a metal or metal alloy, in particular steel or aluminium or their respective alloys, which is bent into shape. This allows for an easy and cost-effective manufacture of the anchoring rail profile.
  • the anchoring rail profile may advantageously be provided with a thickness of the material between 0.5-2.0 mm.
  • the retention portions are inwardly bent clamping flanges on the distal sides of the side flanges opposite the base portion.
  • intermediate flanges may be formed between inwardly bent clamping flanges and the distal sides of the side flanges opposite the base portion, said intermediate flanges being substantially parallel to the base portion.
  • the anchoring profile may be formed with retention portions as inwardly projecting protrusions on the middle sections of the side flanges. This shape may be supplemented with outwardly projecting positioning flanges at the distal sides of the side flanges opposite the base portion, said outwardly projecting flanges being substantially parallel to the base portion.
  • Other shapes of the anchoring rail profile according to the invention may also be provided.
  • the insulation layer preferably comprises mineral wool fibrous panels, preferably with a density of 30-250 kg/m 3 , more preferably of 50-150 kg/m 3 .
  • the wall anchoring system may be used in connection with normal types of insulation, such as the mineral wool with densities within this range.
  • the at least one anchoring rail is preferably provided in a groove on the exterior side of the insulation layer, said groove preferably being machined into the surface of the insulation layer.
  • the anchoring system does not take up additional space and the cavity wall thickness can be reduced.
  • the anchoring rail is provided with a vertical orientation.
  • orientations may be chosen if circumstances favour such other orientations.
  • the fastener is a screw.
  • other types of fasteners may also be used.
  • the fixing has a gripping end and an outer wall mounting end, where the gripping end is preferably provided with T-shape so that the fixing is adapted for being introduced into the slot of the anchoring rail and locked therein by turned the fixing after introduction.
  • the fixing arrangement is moreover advantageous as the fixing can be mounted at any level in the anchoring rail profile, in particular in case of point fixings.
  • the fixing is a wall tie and made of plastic so that thermal bridging as well as corrosion in the wall anchoring system are avoided.
  • a cavity wall which has a substrate 1 and an outer wall 2 with an insulation layer 3 there between.
  • an additional insulation is comprised in the inner wall 1, which is made of load-bearing columns 4 having insulation slabs 9 between the columns 4 in accordance with the insulating wall system described in WO 2014/187726 , which is hereby incorporated by reference.
  • each column 4 there is mounted an anchoring rail profile 5 on the outer side of the insulation layer 3, respectively the insulation spacer element 8 being part of the insulation layer.
  • the anchoring rail profile 5 is accommodated in a groove 31 provided in the insulation spacer element 8 of the column 4 (similar to the groove 31 shown in more detail in fig. 7 ).
  • the anchoring rail profile 5 is fixed to the innermost element of the column 4 which serves as a substrate1 by a number of fasteners 7 along the length of the profile 5 (in the figures only one fastener 7 is shown).
  • the fasteners 7 are provided with fastener heads 71 and inserted into a groove 55 in the anchoring profile 5 and through the base portion 51 of the profile 5 ( fig. 2 ).
  • the fasteners 7 further extend through the insulation and into the substrate 1.
  • one or more fixings such as wall ties 6 are mounted in the anchoring rail profile 5 . These wall ties 6 extend into the outer wall 2 and are secured in the outer wall, e.g. in the mortar between the bricks of which the outer wall 2 may be built.
  • the anchoring rail profile 5 is shaped such that the fastener head 71 is clamped into a fixed position in the profile 5.
  • a first embodiment see fig.
  • inwardly bent flanges 54 lock the screw heads 71 of the fastening screws 7 that secure the anchoring rail profile 5 to the building substrate 1 as well as the base portion 61 of the wall ties 6. In this way the anchoring rail profile 5 is fixed in position and the anchoring rail profile 5 cannot axially move on the screw shaft 72, e.g. as might be caused by wind suction or wind pressure forces.
  • FIG 1b another embodiment of a cavity wall is shown, where the inner wall 1 is a brick wall.
  • the inner wall 1 is provided with an insulation layer 3, and the fastener 7 is secured to the inner wall and retains the profile 5 in a groove 31 of the insulation layer 3.
  • a ventilated façade building wall is shown.
  • the inner wall 1 is a concrete wall.
  • the inner wall 1 is provided with an insulation layer 3, and the anchoring rail profile 5 is secured by fasteners 7, which similar to the embodiment shown in fig. 1b is secured to the inner wall 1.
  • the anchoring rail profile 5 a plurality of fixings 6 are provided. These fixings 6 are constituted by mounting brackets to which is mounted a holding member 11. Onto this holding member 11 the outer façade cladding 10 is mounted.
  • the holding member 11 will typically be an elongated holding track 11 mounted in parallel to the anchoring rail 5 and thereby providing a fixing base for the outer building screen or façade cladding 10.
  • the anchoring rail profile 5 is shaped such that the fastener head 71 is clamped into a fixed position in the profile 5.
  • the anchoring rail profile 5 is formed from a strip of metal, such as steel, which is bent into its shape, preferably with a symmetry line along the profile length.
  • the anchoring rail profile 5 is provided with spring-back properties so that the retention portions 54 (and possibly also the side portions 52) will elastically bend further as the fastener head 71 is advanced into the groove 55.
  • the profile 5 is dimensioned such that as soon as the fastener head 71 reaches the base portion 51, the retention portions 54 (and the side portions 52) spring back and lock the head inside the profile 5.
  • the groove 55 of the anchoring rail profile 5 is also designed for receiving the fixing 6, e.g. a wall tie.
  • a wall tie is provided with a T-shaped base portion 61 at the gripping end of the wall tie 6.
  • This T-shape means that the wall tie 6 has a traverse element at the end.
  • This traverse element has a length which nearly corresponds to the inner dimension of the base portion of the profile 5.
  • the T-shaped base portion 61 of the wall tie 6 is inserted into the groove 55 of the anchoring rail profile 5 with the traverse element parallel to the direction of the groove 55 and then turned approx. 90° whereby the traverse element becomes clamped and locked in the anchoring rail profile 5.
  • the wall tie In the same plane as the traverse element at the base end 61 the wall tie also is formed with an outer wall mounting end 62 in the form of a loop, eye or similar suitable shapes for firmly retaining a wall tie 6 in the mortar between bricks of the outer wall 2.
  • This loop end 62 becomes oriented perpendicular to the orientation of the anchoring rail profile 5, which preferably is vertical so that the wall ties are aligned with the bricks in the outer wall 2.
  • FIG 5 a second embodiment of the anchoring rail profile is shown.
  • the profile 5 is also symmetrical about the base portion 51.
  • On each side of the base portion side portions 52 are provided.
  • On the side portions 52 inwardly protruding retention portions 54 are formed.
  • On the top of the side portions exterior portions 56 are formed which can rest on the exterior side of the insulation layer.
  • the exterior portions may be ended in a gripping flange 57 for better fixation of the anchoring profile 5 in the insulation.
  • the retention portions 54 are formed on the side flanges 52 so that the side flanges 52 give way as the fastener head 71 is advanced into the groove 55, but as soon as the head 71 has reached the base portion 51, the side portions 52 snap back and the retention portions 54 then firmly grip and lock the fastener head 71 in the profile 5.
  • FIG 6 a third embodiment of the anchoring rail 5 is shown.
  • This profile shape is somewhat similar to the shape of the first embodiment but without the intermediate portions. Instead the upright standing side portions 52 are bend into inwardly retention flanges 54 at the side opposite the base portion 51.
  • the anchoring rail profile 5 may preferably be accommodated in a groove 31 machined in the exterior side of the insulation layer 3.
  • the groove 31 is preferably provided with a shape congruent to the exterior shape of the anchoring rail profile 5 to ensure a snugly fit of the rail profile 5 in the groove 31.
  • FIGS 8 and 9 two embodiments are illustrated comprising a line fixing providing a holding track 11 for the ventilated façade application.
  • the elongated holding track 11 is directly applied to the anchoring rail 5 and connected with screws 12.
  • the elongated holding track 11 is provided with a ridge 11a, which fits into the groove 55 of the anchoring rail profile 5.
  • the holding track 11 is generally flat and adapted to receive the outer building screen or façade cladding 10 (see fig. 1c ).
  • the anchoring rail profile 5 is raised out of the plane of the insulation layer 3.
  • fig. 8 there is shown an embodiment, where a spacer element 8 extends out of the outer plane of the insulation layer 3.
  • the anchoring rail profile 5 is mounted in a groove 31 of this spacer element 8 by fasteners 7 where the fastener heads 71 are 'clicked' into position as explained above in relation to e.g. figs. 2 and 7 .
  • FIG. 9 an alternative embodiment of the ventilated façade application is shown.
  • the anchoring rail profile 5 which is also provided with a different shape comprising support wings 58 adapted to rest on the outside surface of the insulation layer 3 and due to the height of the anchoring rail profile 5 creating a respective ventilation channel 13.
  • the outer façade cladding 10, such as a rainscreen is mounted directly onto the holding track 11, similar to the mounting indicated in fig. 8 , which may be a standard rainscreen cladding system of the prior art.
EP19205870.9A 2019-10-29 2019-10-29 Verankerungsschiene und wandverankerungssystem für isolierte wände Pending EP3816365A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19205870.9A EP3816365A1 (de) 2019-10-29 2019-10-29 Verankerungsschiene und wandverankerungssystem für isolierte wände

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Application Number Priority Date Filing Date Title
EP19205870.9A EP3816365A1 (de) 2019-10-29 2019-10-29 Verankerungsschiene und wandverankerungssystem für isolierte wände

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EP3816365A1 true EP3816365A1 (de) 2021-05-05

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903671A (en) * 1972-11-07 1975-09-09 Bpb Industries Ltd Wall linings
GB2111095A (en) 1981-08-12 1983-06-29 Glasgow Steel Nail Company Lim Wall Tie
US4596102A (en) * 1984-01-12 1986-06-24 Dur-O-Wal, Inc. Anchor for masonry veneer
US4955172A (en) * 1989-09-14 1990-09-11 Pierson Neil W Veneer anchor
WO2005021883A1 (en) 2003-08-29 2005-03-10 Rockwool International A/S Device and method for securing an insulation board within a cavity wall
US20050210800A1 (en) * 2004-02-06 2005-09-29 The Eci Group, Llc Masonry anchoring system
US20120073224A1 (en) * 2004-12-14 2012-03-29 Kingspan Research And Developments Limited. Composite cladding
WO2014187726A1 (en) 2013-05-21 2014-11-27 Rockwool International A/S An insulating wall, a column assembly therefore and a method of constructing such insulating wall

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903671A (en) * 1972-11-07 1975-09-09 Bpb Industries Ltd Wall linings
GB2111095A (en) 1981-08-12 1983-06-29 Glasgow Steel Nail Company Lim Wall Tie
US4596102A (en) * 1984-01-12 1986-06-24 Dur-O-Wal, Inc. Anchor for masonry veneer
US4955172A (en) * 1989-09-14 1990-09-11 Pierson Neil W Veneer anchor
WO2005021883A1 (en) 2003-08-29 2005-03-10 Rockwool International A/S Device and method for securing an insulation board within a cavity wall
US20050210800A1 (en) * 2004-02-06 2005-09-29 The Eci Group, Llc Masonry anchoring system
US7469511B2 (en) 2004-02-06 2008-12-30 The Eci Group, Llc Masonry anchoring system
US20120073224A1 (en) * 2004-12-14 2012-03-29 Kingspan Research And Developments Limited. Composite cladding
WO2014187726A1 (en) 2013-05-21 2014-11-27 Rockwool International A/S An insulating wall, a column assembly therefore and a method of constructing such insulating wall

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