IE20210207A1

IE20210207A1 - Improvements relating to building wall openings

Info

Publication number: IE20210207A1
Application number: IE20210207A
Authority: IE
Inventors: Cooney Eugene
Original assignee: Cooney Eugene
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2023-06-21

Abstract

A method of insulating a cavity wall is disclosed. A lintel (2) is mounted across an opening at the inner leaf, a bracket (6) is placed with its upper flange (10) resting on the top surface of this lintel and its flange (11) extending downwardly alongside this lintel. The bracket’s lower flange (12) is at the same level as the bottom of the lintel (2) and a slab (7) of insulation is placed on this flange. The slab (7) is also retained by an upstanding lip (13) so that it is upstanding alongside the surface of the inner leaf and leaving an air gap between the slab and the outer leaf.

Description

"Improvements Relating to Building Wall Openings" Introduction The present invention relates to wall openings with lintels of masonry and/or steel for openings, for example for windows and doors, in buildings.

At present it is particularly difficult to ensure complete application of insulation above a lintel, especially for cavity walls with inner and outer leaves.

The present invention addresses this problem.

Summary of the Invention We describe a bracket for supporting a slab of insulation in a cavity wall, the bracket comprising a top ﬂange configured for resting on a top surface of a lintel, a downwardly-depending web, a bottom flange configured to extend outwardly across part of a wall cavity and supporting a slab of insulation.

Preferably, the bracket further comprises a lip upstanding from the bottom ﬂange and being configured to retain a slab of insulation. Preferably, the lip extends upwardly from an edge of the bottom flange.

Preferably, the lip is substantially parallel to the flange. In one example the bracket further comprises a member extending downwardly from an inner end of the top flange, for engaging around a lintel or steel beam. Preferably, said member extends both downwardly and inwardly to form a groove to engage a top inner edge of a steel beam. Preferably, at least a top surface of the top ﬂange is roughened or serrated.

In another example, we describe a method of insulating a cavity wall, the method comprising the steps of mounting a lintel or steel beam across an opening at the inner and outer leaves, placing a bracket of any example with the top flange resting on the lintel or beam and the ﬂange extending downwardly within the cavity, and placing a slab of insulation on the bottom flange.

Preferably, the bracket is placed on the lintel of the inner leaf.

Preferably, the bracket lower ﬂange extends across the cavity for a majority of the cavity width.

We also describe a cavity wall having an inner leaf, an outer leaf, and a cavity, wherein: a lintel extends across an opening of the inner leaf, the wall comprises a bracket comprising a top flange resting on a top surface of the lintel, a downwardly depending web extending downwardly in the cavity, and a bottom flange extending outwardly across part of the cavity, a slab of insulation rests on the bottom flange and within the cavity.

Preferably, the lip extends upwardly from an edge of the bottom ﬂange. Preferably, the lip is substantially parallel to the ﬂange.

Preferably, the bracket further comprises a member extending downwardly from an inner end of the top flange, engaging around the lintel.

Preferably, said member extends both downwardly and inwardly to form a groove engaging a top inner edge of the lintel.

Preferably, at least a top surface of the top ﬂange is roughened or serrated.

Detailed Description of the Invention The invention will be more clearly understood from the following description of some embodiments thereof, given by way of example only with reference to the accompanying drawings in which: Fig. l is a perspective view of a window lintel according to the invention; Fig. 2 is a perspective view of a support bracket used for support of insulation above the lintel, and Fig. 3 is an end view of the bracket; Fig. 4 is a perspective view of an alternative bracket, and Fig. 5 shows the bracket in use with an R8] steel member; and Figs. 6 and 7 are perspective view of alternative brackets.

Referring to Fig. l a wall 1 at the location ofa lintel comprises an inner leaf and an outer leaf. The inner leaf comprises a reinforced concrete lintel 2 and the outer leaf comprises a reinforced concrete lintel 3. This drawing also shows blockwork 4 and 5 of the inner and outer leaves respectively. In addition, the components the wall 1 comprise a bracket or "clip tie" 6 supporting a slab of wool insulation 7 between the leaves. Advantageously, the insulation 7 extends downwardly to the level of the bottom edge of the lintels, thereby providing complete insulation down to the lowest possible level over the opening. Moreover, the insulation 7 is supported in a manner to provide an air gap between the insulation 7 and the outer leaf, and there is no bridging of the cavity. Also, a head damp proof course ("DPC") may also be deployed in the normal manner if desired.

As shown more clearly in Figs. 2 and 3, the bracket 6 comprises: an upper ﬂange 10 which rests on the top surface of the inner lintel 2, a web 11 which extends vertically downwardly alongside the outer-facing surface of the lintel 2, a lower flange 12 which extends horizontally away from the lintel 2 across part of the width of the cavity, an upstanding retainer lip 13 for retaining the insulation 1 in position without slippage further out into the cavity.

The depth of the lower flange 12 is chosen to suit the cavity depth. It is preferred that it extends for more than half of the cavity width.

The bracket may be of any suitable material, and it is preferred that it is of stainless.

It will be appreciated that the bracket allows a full coverage of insulation in the cavity, down to the level of the bottom surface of the inner leaf lintel.

The invention ensures that the building is insulated to 100% and done correctly. The block-layer can install the insulation all the way to the underside of the lintel whether it’s a concrete lintel as illustrated or a heavy-duty steel lintel. By way of example, the lintels may have a width of 150mm, mm, or 225mm.

Referring to Figs. 4 and 5 a bracket 100 comprises: an upper ﬂange 110 which rests on the top surface of an inner RSJ beam, a web 110 which extends vertically downwardly alongside the outer-facing surface of the beam, a lower flange 112 which extends horizontally away from the RS] beam across part of the width of the cavity, an upstanding retainer lip 113 for retaining the insulation 1 in position without slippage further out into the cavity, and a groove formed by a turned-in lip 120 to engage around the inner top edge of the beam to securely hold the bracket in place.

Also, the top surface 121 is serrated to provide a good contact surface for the block placed on top of the bracket.

Referring to Fig. 6 a bracket 200 comprises: an upper ﬂange 210 for resting on the top surface of the inner lintel, a web 211 which extends vertically downwardly alongside the outer-facing surface of the lintel, a lower flange 212 which extends horizontally away from the lintel across part of the width of the cavity, and an upstanding retainer lip 213 for retaining the insulation 1 in position without slippage further out into the cavity, and a downward ﬂange 220 for engaging the inner top surface of the lintel, do that the parts 220, 210, and 211 are wrapped around three surfaces at the top of the lintel for good anchoring in place.

Referring to Fig. 7, a bracket 300 comprises: an upper ﬂange 310 for resting on the top surface of the inner lintel, which in this case is shallow, a web 311 which extends vertically downwardly alongside the outer-facing surface of the lintel, a lower flange 312 which extends horizontally away from the lintel across part of the width of the cavity.

Components of embodiments can be employed in other embodiments in a manner as would be understood by a person of ordinary skill in the art. The invention is not limited to the embodiments described but may be varied in construction and detail. The bracket may be of metal instead of extruded plastics. The lower ﬂange may include an inner lip so that the insulation is supported between the inner and outer lips, thereby providing a gap on both sides.

Claims A bracket for supporting a slab of insulation in a cavity wall, the bracket comprising a top flange (10) configured for resting on a top surface of a lintel (2), a downwardly depending web (ll), a bottom flange (12) configured to extend outwardly across part of a wall caVity and supporting a slab of insulation.

A bracket as claimed in claim 1, wherein the bracket further comprises a lip (13) upstanding from the bottom flange and being configured to retain a slab of insulation.

A bracket as claimed in claim 2, wherein the lip (13) extends upwardly from an edge ofthe bottom ﬂange.

A bracket as claimed in claims 2 or 3, wherein the lip is substantially parallel to the ﬂange (11).

A bracket as claimed in any preceding claim, further comprising a member (120, 220) extending downwardly from an inner end of the top flange, for engaging around a lintel or steel beam.

A bracket as claimed in claim 5, wherein said member (120) extends both downwardly and inwardly to form a groove to engage a top inner edge of a steel beam.

A bracket of any preceding claim, wherein at least a top surface of the top ﬂange is roughened or serrated.

A caVity wall haVing an inner leaf, an outer leaf, and a caVity, wherein: a lintel (RSJ) extends across an opening of the inner leaf, the wall comprises a bracket comprising a top flange (10) resting on a top surface of the lintel (2), a downwardly depending web (1 1) extending downwardly in the caVity, and a bottom flange (12) extending outwardly across part of the caVity, a slab of insulation rests on the bottom ﬂange and within the caVity.

Claims

1.Claims

2.A bracket for supporting a slab of insulation in a cavity wall, the bracket comprising a top flange (10) configured for resting on a top surface of a lintel (2), a downwardly depending web (ll), a bottom flange (12) configured to extend outwardly across part of a wall caVity and supporting a slab of insulation.

3.A bracket as claimed in claim 1, wherein the bracket further comprises a lip (13) upstanding from the bottom flange and being configured to retain a slab of insulation.

4.A bracket as claimed in claim 2, wherein the lip (13) extends upwardly from an edge ofthe bottom ﬂange.

5.A bracket as claimed in claims 2 or 3, wherein the lip is substantially parallel to the ﬂange (11).

6.A bracket as claimed in any preceding claim, further comprising a member (120, 220) extending downwardly from an inner end of the top flange, for engaging around a lintel or steel beam.

7.A bracket as claimed in claim 5, wherein said member (120) extends both downwardly and inwardly to form a groove to engage a top inner edge of a steel beam.

8.A bracket of any preceding claim, wherein at least a top surface of the top ﬂange is roughened or serrated.

9.A caVity wall haVing an inner leaf, an outer leaf, and a caVity, wherein: a lintel (RSJ) extends across an opening of the inner leaf, the wall comprises a bracket comprising a top flange (10) resting on a top surface of the lintel (2), a downwardly depending web (1 1) extending downwardly in the caVity, and a bottom flange (12) extending outwardly across part of the caVity, a slab of insulation rests on the bottom ﬂange and within the caVity. 11.ll. 13.l3. 16. A cavity wall as claimed in claim 8, wherein the lip (13) extends upwardly from an edge of the bottom ﬂange. A cavity wall as claimed in claims 8 or 9, wherein the lip is substantially parallel to the flange (ll). A cavity wall as claimed in any of claims 8 to 10, further comprising a member (120, 220) extending downwardly from an inner end of the top flange, engaging around the lintel. A cavity wall as claimed in claim ll, wherein said member (120) extends both downwardly and inwardly to form a groove engaging a top inner edge of the lintel. A cavity wall of any of claims 8 to 12, wherein at least a top surface of the top ﬂange is roughened or serrated. A method of insulating a cavity wall, the method comprising the steps of mounting a lintel or steel beam across an opening at the inner and outer leaves, placing a bracket of any of claims 1 to 7 with the top ﬂange resting on the lintel or beam and the ﬂange extending downwardly within the cavity, and placing a slab of insulation on the bottom ﬂange. A method as claimed in claim 14, wherein the bracket is placed on the lintel of the inner leaf. A method as claimed in claims 14 or 15, wherein the bracket lower ﬂange extends across the cavity for a majority of the cavity width.