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EP4375447B1 - Building with a roof with a fire-resistant layer - Google Patents

Building with a roof with a fire-resistant layer

Info

Publication number
EP4375447B1
EP4375447B1 EP23207715.6A EP23207715A EP4375447B1 EP 4375447 B1 EP4375447 B1 EP 4375447B1 EP 23207715 A EP23207715 A EP 23207715A EP 4375447 B1 EP4375447 B1 EP 4375447B1
Authority
EP
European Patent Office
Prior art keywords
fire
roof
resistant layer
resistant
present
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.)
Active
Application number
EP23207715.6A
Other languages
German (de)
French (fr)
Other versions
EP4375447A1 (en
EP4375447C0 (en
Inventor
Richard DONKERS
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.)
Weda Holland BV
Original Assignee
Weda Holland BV
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 Weda Holland BV filed Critical Weda Holland BV
Publication of EP4375447A1 publication Critical patent/EP4375447A1/en
Application granted granted Critical
Publication of EP4375447C0 publication Critical patent/EP4375447C0/en
Publication of EP4375447B1 publication Critical patent/EP4375447B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/18—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16
    • 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
    • E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
    • 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
    • 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
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • 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
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1643—Insulation of the roof covering characterised by its integration in the roof structure the roof structure being formed by load bearing corrugated sheets, e.g. profiled sheet metal roofs
    • 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
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1643—Insulation of the roof covering characterised by its integration in the roof structure the roof structure being formed by load bearing corrugated sheets, e.g. profiled sheet metal roofs
    • E04D13/165—Double skin roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • 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
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1662—Inverted roofs or exteriorly insulated roofs

Definitions

  • the invention relates to a building provided with a roof, in particular a flat roof, on which insulation and a roof covering is present that contains flammable material.
  • a building according to the preamble of claim 1 is known from DE 16 09 947 A1 .
  • the flammable material used in known roof coverings is usually bitumen, PVC or EPDM and EPS (tempex), PIR or PUR is often used as insulation.
  • Insurance companies prefer not to have roofs that contain roofing and/or insulation made of flammable materials because of the fire hazard and therefore major damage in the event of fire.
  • the building according to the invention is characterized in that a fire-resistant layer is present on the roof covering, which comprises panels that are mainly made of magnesium oxide. Fire tests have shown that fire spreads much less quickly on roofs where magnesium oxide-containing panels are present on the roof covering than on roofs without the presence of these panels. This greatly reduces damage in the event of fire.
  • Magnesium oxide panels are known per se, but it has never been thought of applying them as an extra layer on top of (existing) roofs to reduce the risk of fire.
  • the magnesium oxide-containing panels are certified with fire class A1 and are water resistant.
  • US 2021/277653 A1 discloses a roof on which there is insulation and a roof covering that contains flammable material.
  • a fire-resistant layer is also present which comprises panels that are mainly made of magnesium oxide. However, this fire-resistant layer is present under the flammable roof covering.
  • the fire-resistant layer consists entirely of panels consisting essentially of magnesium oxide, so that the fire resistance is even better.
  • the fire-resistant layer is preferably glued, cemented or screwed to the roof covering.
  • An embodiment of the building according to the invention is characterized in that the building comprises a fire wall on which a fire-resistant roof construction is present which extends in the roof on both sides of the fire wall over a distance from the fire wall, whereby the roof covering is present on the fire-resistant roof construction and the adjacent parts of the roof, and where the fire-resistant layer is present on the roof covering at the location of the entire fire-resistant roof construction and at the location of strips of the roof adjacent to the fire-resistant roof construction.
  • the fire-resistant layer on the roof covering will prevent fire from spreading from one part of the building to the other part of the building.
  • the fire-resistant layer above the fire wall is preferably at least five meters wide.
  • a further embodiment of the building according to the invention is characterized in that the fire-resistant layer is present between the roof covering and the solar panels.
  • the solar panels are preferably mounted directly on the fire-resistant layer or are mounted on the fire-resistant layer via a supporting structure.
  • Figure 1 shows part of the roof 1 of a building according to the invention at the location of a fire wall 5.
  • a fire-resistant roof construction 3 is present above the fire wall and integrated into the roof.
  • the fire-resistant roof construction 3 extends from the fire wall 5 into the roof 1 on either side.
  • the roof 1 is constructed from profiled supporting plates la with an insulation layer 1b on top.
  • the fire-resistant roof construction 3 resting on the fire wall 5 is composed of different insulation layers 3a and 3b with a cover plate 3c at the bottom.
  • the insulation layer 1b is made of a flammable material such as EPS (tempex).
  • the insulation layers 3a and 3b are made of fire-resistant material to postpone or delay the spread of fire to the other side of the fire wall in the event of a fire on one side of the fire wall.
  • a roof covering 9 made of flammable material such as bitumen, PVC or EPDM.
  • a fire-resistant layer 11 is present on the roof covering 9 at the location of the entire fire-resistant roof construction 3 and at the location of strips 15 of the roof 1 adjacent to the fire-resistant roof construction 3.
  • This fire-resistant layer 11 consists of panels that are mainly made of magnesium oxide and are attached to the roof covering 9, for example by gluing, sealants or screws.
  • FIG. 2 shows part of the roof 21 of a second embodiment of the building according to the invention.
  • Solar panels 23 are present on this roof 21.
  • a fire-resistant layer 25 is present between the roof covering 27 and the solar panels 23.
  • FIG. 3 shows part of the roof of a third embodiment of the building according to the invention.
  • this roof 31 there are supporting structures 32 on which solar panels 33 are located.
  • the supporting structures 21 are mounted on a fire-resistant layer 35 and this fire-resistant layer 35 is applied to the roof covering 37.
  • the thickness of the fire-resistant layer can, for example, vary from 1 to 50 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Description

    Technical field of the invention
  • The invention relates to a building provided with a roof, in particular a flat roof, on which insulation and a roof covering is present that contains flammable material.
    • Background of the invention
  • A building according to the preamble of claim 1 is known from DE 16 09 947 A1 . The flammable material used in known roof coverings is usually bitumen, PVC or EPDM and EPS (tempex), PIR or PUR is often used as insulation. Insurance companies prefer not to have roofs that contain roofing and/or insulation made of flammable materials because of the fire hazard and therefore major damage in the event of fire.
    • Summary of the invention
  • It is an object of the present invention to provide a building with a roof of the type described in the introduction where the damage in the event of fire is less than in buildings with the known roofs. To this end, the building according to the invention is characterized in that a fire-resistant layer is present on the roof covering, which comprises panels that are mainly made of magnesium oxide. Fire tests have shown that fire spreads much less quickly on roofs where magnesium oxide-containing panels are present on the roof covering than on roofs without the presence of these panels. This greatly reduces damage in the event of fire.
  • Magnesium oxide panels are known per se, but it has never been thought of applying them as an extra layer on top of (existing) roofs to reduce the risk of fire. The magnesium oxide-containing panels are certified with fire class A1 and are water resistant.
  • It is noted that US 2021/277653 A1 discloses a roof on which there is insulation and a roof covering that contains flammable material. A fire-resistant layer is also present which comprises panels that are mainly made of magnesium oxide. However, this fire-resistant layer is present under the flammable roof covering.
  • Preferably, the fire-resistant layer consists entirely of panels consisting essentially of magnesium oxide, so that the fire resistance is even better. The fire-resistant layer is preferably glued, cemented or screwed to the roof covering.
  • An embodiment of the building according to the invention is characterized in that the building comprises a fire wall on which a fire-resistant roof construction is present which extends in the roof on both sides of the fire wall over a distance from the fire wall, whereby the roof covering is present on the fire-resistant roof construction and the adjacent parts of the roof, and where the fire-resistant layer is present on the roof covering at the location of the entire fire-resistant roof construction and at the location of strips of the roof adjacent to the fire-resistant roof construction.
  • In well-known buildings, concrete tiles are placed on the fire-resistant roof structure to slow down the fire. The concrete tiles are often placed on bitumen supports. So between the underside of the tiles and the roof covering there is usually a space of 3-5mm where there is air and air can flow through, which will fuel a fire.
  • In the event of fire, the fire-resistant layer on the roof covering will prevent fire from spreading from one part of the building to the other part of the building. The fire-resistant layer above the fire wall is preferably at least five meters wide. An additional advantage compared to the use of concrete tiles is that the fire-resistant layer is many times lighter in weight and can be glued directly to the roof covering without adjustments to the roof structure.
  • Insurance companies do not want solar panels on flat roofs if the roof covering and/or roof insulation contains flammable materials such as bitumen, PVC, EPDM, EPS (tempex), PIR, PUR. In order to be able to use solar panels on such roofs, a further embodiment of the building according to the invention is characterized in that the fire-resistant layer is present between the roof covering and the solar panels. The solar panels are preferably mounted directly on the fire-resistant layer or are mounted on the fire-resistant layer via a supporting structure.
    • Brief description of the drawings
  • The invention will be further elucidated below on the basis of drawings. These drawings show an embodiment of the building according to the present invention. In the drawings:
    • Figure 1 shows a part of the roof of a first embodiment of the building according to the invention at the location of a fire wall;
    • Figure 2 shows a part of the roof of a second embodiment of the building according to the invention with solar panels directly on the roof covering; and
    • Figure 3 shows part of the roof of a third embodiment of the building according to the invention with a supporting structure for solar panels on the roof covering.
    Detailed description of the drawings
  • Figure 1 shows part of the roof 1 of a building according to the invention at the location of a fire wall 5. A fire-resistant roof construction 3 is present above the fire wall and integrated into the roof. The fire-resistant roof construction 3 extends from the fire wall 5 into the roof 1 on either side. The roof 1 is constructed from profiled supporting plates la with an insulation layer 1b on top. The fire-resistant roof construction 3 resting on the fire wall 5 is composed of different insulation layers 3a and 3b with a cover plate 3c at the bottom.
  • The insulation layer 1b is made of a flammable material such as EPS (tempex). The insulation layers 3a and 3b are made of fire-resistant material to postpone or delay the spread of fire to the other side of the fire wall in the event of a fire on one side of the fire wall. On the insulation layers 1b and 3b there is a roof covering 9 made of flammable material such as bitumen, PVC or EPDM. To further make spreading of fire more difficult and delay the spread of fire, a fire-resistant layer 11 is present on the roof covering 9 at the location of the entire fire-resistant roof construction 3 and at the location of strips 15 of the roof 1 adjacent to the fire-resistant roof construction 3. This fire-resistant layer 11 consists of panels that are mainly made of magnesium oxide and are attached to the roof covering 9, for example by gluing, sealants or screws.
  • Figure 2 shows part of the roof 21 of a second embodiment of the building according to the invention. Solar panels 23 are present on this roof 21. To greatly reduce the risk of fire, a fire-resistant layer 25 is present between the roof covering 27 and the solar panels 23.
  • Figure 3 shows part of the roof of a third embodiment of the building according to the invention. On this roof 31 there are supporting structures 32 on which solar panels 33 are located. In order to greatly reduce the fire hazard on this roof, the supporting structures 21 are mounted on a fire-resistant layer 35 and this fire-resistant layer 35 is applied to the roof covering 37. The thickness of the fire-resistant layer can, for example, vary from 1 to 50 mm.
  • Although the present invention is elucidated above on the basis of the given drawings, it should be noted that this invention is not limited whatsoever to the embodiments shown in the drawings. The invention also extends to all embodiments deviating from the embodiments shown in the drawings within the scope of the invention defined by the appended claims.

Claims (6)

  1. Building equipped with a roof (1), in particular a flat roof, on which insulation (7) and a roof covering (9; 27; 37) is present that contains flammable material, characterized in that a fire-resistant layer (11; 25; 35) is present on the roof covering (9; 27; 37), which fire-resistant layer (11; 25; 35) comprises panels that are mainly made of magnesium oxide.
  2. Building according to claim 1, characterized in that the fire-resistant layer (11; 25; 35) consists of panels consisting essentially of magnesium oxide.
  3. Building according to claim 1 or 2, characterized in that the fire-resistant layer (11; 25; 35) is glued, cemented or screwed to the roof covering (9; 27; 37).
  4. Building according to claim 1, 2 or 3, characterized in that the building comprises a fire wall (5) on which a fire-resistant roof construction (3) is present which extends in the roof (1) on both sides of the fire wall over a distance from the fire wall (5), whereby the roof covering (9; 27; 37) is present on the fire-resistant roof construction (3) and the adjacent parts of the roof (1), and where the fire-resistant layer (11; 25; 35) is present on the roof covering (9; 27; 37) at the location of the entire fire-resistant roof construction (3) and at the location of strips (15) of the roof (1) adjacent to the fire-resistant roof construction (3).
  5. Building according to any of the preceding claims, characterized in that the building is provided with solar panels (23; 33) present on the roof covering (27; 37), wherein the fire-resistant layer (25; 35) is present between the roof covering ( 27; 37) and the solar panels (23; 33).
  6. Building according to claim 5, characterized in that the solar panels (23; 33) are mounted directly on the fire-resistant layer (25) or are mounted on the fire-resistant layer (35) via a supporting structure (32).
EP23207715.6A 2022-11-22 2023-11-03 Building with a roof with a fire-resistant layer Active EP4375447B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2033593A NL2033593B1 (en) 2022-11-22 2022-11-22 Building with a roof provided with a fire-resistant layer

Publications (3)

Publication Number Publication Date
EP4375447A1 EP4375447A1 (en) 2024-05-29
EP4375447C0 EP4375447C0 (en) 2025-07-30
EP4375447B1 true EP4375447B1 (en) 2025-07-30

Family

ID=84887491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23207715.6A Active EP4375447B1 (en) 2022-11-22 2023-11-03 Building with a roof with a fire-resistant layer

Country Status (2)

Country Link
EP (1) EP4375447B1 (en)
NL (1) NL2033593B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1496377A (en) * 1965-10-14 1967-09-29 Dow Chemical Co Roof structure and its construction method
US9605433B2 (en) * 2012-11-09 2017-03-28 Johns Manville Fire resistant composite boards and methods
CA3082154A1 (en) * 2020-03-06 2021-09-06 United States Gypsum Company Composite structure including a structural panel and a metal support

Also Published As

Publication number Publication date
EP4375447A1 (en) 2024-05-29
NL2033593B1 (en) 2024-05-30
EP4375447C0 (en) 2025-07-30

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