Fire-resistant building panels

Abstract

A fire-resistant structural building panel which comprises an internal rectangular timber frame which borders a quantity of high density thermally insulating material. The frame comprises upper and lower horizontal frame members each coated with a solution including an intumescent material and each connected to generally vertical side frame members also coated with a solution containing an intumescent material. A plurality of sheet members are secured to the frame members and are dimensioned to match the dimensions of the rectangular frame along the horizontal sides and one vertical side of the frame but to extend beyond the other vertical side of the frame to define a channel open to receive an additional vertical frame member of width and depth substantially equal to the width and depth of the channel. Each external panel member comprises a plurality of equally dimensioned sheet members each coated on at least one side with a solution of intumescent material and each adhered to its neighbouring sheet or sheets.

Description

[0001] FIRE-RES ISTANT BUILDING PANELS

[0002] Field of the invention

[0003] This invention relates to fire-resistant panels for use in the construction of buildings .

[0004] More especially the invention concerns fire-resistant structural panels which in use define sections of external walls for use in the construction of housing and industrial units .

[0005] Background to the Invention

[0006] Structural panels for use in the construction of both residential and commercial buildings are commonplace .

[0007] Such panels generally include a core of rigid foam insulating material sandwiched between and adhesively bonded or otherwise secured to inner and outer panels of , for example , plasterboard or wood .

[0008] Structural panel s facilitate inter alia a fast-track building process for residential and commercial buildings with potential cost savings for reason that they are relatively lightweight and simple to erect .

[0009] However, currently available structural panels have limited ability to act as fire barriers , their resistance to the spread of smoke and fire being in many cases less than ten minutes . Our UK Patent 2603273B discloses a fire-resistant structural panel for residential and commercial buildings having enhanced resistance to the spread of smoke and fire and the present invention concerns fire resistant structural panels having improved features to those disclosed in this earlier patent .

[0010] More particularly, the present invention sets out to provide fire resistant building panels which in use define sections of external walls of residential and industrial buildings and which in use define sections of external walls of a building and which have all the advantages of presently available structural panels and which additionally act as ef fective firebreaks for periods in excess of four hours .

[0011] Additionally, fire resistant structural panels in accordance with the invention provide enhanced acoustic protection .

[0012] Statements of the Invention

[0013] In a preferred aspect , the invention provides a fire-resistant structural building panel which, in use , defines a part of an external wall of a building, said building panel comprising a rectangular frame which borders a quantity of high density thermally insulating material and comprises upper and lower generally hori zontal frame members each coated on at least one side with a solution including an intumescent material and each connected to generally vertical side frame members also coated on at least one side with a solution which contains an intumescent material , said building panel further comprising a plurality of equally dimensioned sheet members each coated on at least one side with a solution which includes an intumescent material and each adhered to its neighbouring sheet or sheet members , each sheet member being secured to said frame members and dimensioned to match the dimensions of the rectangular frame along the hori zontal sides and one generally vertical side of the frame but to extend beyond the other vertical side of the frame to define a channel open to receive an additional vertical frame member of width and depth substantially equal to the width and depth respectively of the channel , the arrangement being such that , i f damaged, one or each outermost sheet member can be removed from the panel and replaced by a fresh sheet member without signi ficant damage to the surface of the underlying panel .

[0014] Preferably, each sheet member o f said panel is coated on at least one side with a solution including an intumescent material .

[0015] A preferred intumescent containing solution is HW01 as supplied by the Applicant .

[0016] Typically, the thickness of the panel members is between 10 and 14mm, preferably 12 . 5mm .

[0017] Each of the other sheets of the panel preferably comprises plasterboard of thickness between 10mm and 14mm, preferably 12 . 5mm . The total thickness of the panel is preferably between 120mm and 140mm, preferably 132mm .

[0018] The structural building panel may include an internal open-ended channel or conduit which extends downwardly from the upper generally frame member and is dimensioned to receive cabling connectable to a source of electricity . The channel or conduit may extend along the full height of the panel . An additional side frame member may be provided for attachment to said one vertical side frame member for selective location within said channel .

[0019] Brief description of the Drawings

[0020] The invention wil l now be described by way of example only with reference to the accompanying drawings in which : -

[0021] Figure 1 is a side view of a fire-resistant building panel in accordance with the invention with one external facing sheet removed to show internal features of the panel ;

[0022] Figure 2 is an end view from above of the panel shown in Figure 1 ;

[0023] Figure 3 is an end view of adj oining end portions of panels in accordance with the invention which together form sections of an internal wall of a building;

[0024] Figure 4 illustrates adj oining end portions of panels in accordance with the invention which together define a corner section of a building; and

[0025] Figure 5 is a side view in section of a central part of a panel in accordance with the invention .

[0026] Detailed Description of the Invention

[0027] The structural fire-resistant building panel illustrated in the drawings is intended for use in new and existing buildings to define , in concert with other identical or similar panels , the external walls of rooms and spaces within such buildings .

[0028] The illustrated building panel comprises a rectangular timber frame 10 which borders sheets 12 of a high density thermally insulating material such as that known as rock-wall insulation . Typically, the thickness of the insulating material is between 40 and 60mm (preferably 40mm) . The frame 10 comprises upper and lower hori zontal elongate timber side members 14a, 14b each coated with a solution which includes an intumescent material , and vertical elongate timber side frame members 16a, 16b also coated with a solution which contains an intumescent material .

[0029] A suitable coating is the intumescent coating HW01 supplied by the Applicant .

[0030] Typically, the overall dimension of the frame is 1220mm by

[0031] 2440mm .

[0032] As will be seen from Figure 2 , the front and rear sides of the panel are covered by panel sheets 18a, 18b each secured to the frame 10 by any conventional means . In use , the panel sheet 18a is positioned on the external face of the panel and the sheet 18b on the internal face of the panel .

[0033] As will be seen more clearly from Figure 2 , the side frame member 16a is spaced inwardly from the adj acent side edges of the panel sheets 18a, 18b to define an open sided channel 20 whose length is equal to the length of an additional side member 22 ( see Figure 4 ) and whose cross section is marginally greater than that of the side member 22 to assi st insertion of the side member 22 into the channel 20 when required . As illustrated in Figure 3 of the drawings , the side member 22 , in use , is attached to the exposed side surface of the frame member 16b to define a lengthwise extending extension which, when required, defines a close fit within the channel 20 of an adj oining panel . In this way the panels can readily be j oined one to each other to define an external wall of a building .

[0034] Screws 24 are provided to secure the side member 22 within the channel 20 .

[0035] As will be seen from Figure 4 , the additional side member 22 can also be positioned within the open side of a panel to close the channel 20 when securing adj oining panels to define a rectangular reinforced corner of a room or space .

[0036] Turning now to Figure 5 of the drawings , the internal panel sheet 18b comprises an inner lining comprising an OSB panel 26 , sheets 28 of plasterboard and a sheet 30 of cement board positioned between the plasterboard sheets 28 .

[0037] Each external panel sheet 18a comprises an inner OSB panel 26 , an intermediate lining 32 of silicon cloth and an outer cover sheet of cement board 34 . The panel 26 and cover sheet 28 are secured one to another by a suitable adhesive which preferably includes an intumescent material .

[0038] As will be seen from Figure 1 , the panel 10 includes an internal open-ended channel 11 which extends downwardly from the upper end of the frame 10 . This channel is dimensional to receive cabling connected to a source of electricity .

[0039] The panel illustrated is essentially for use in ground floors of buildings . For floors above ground level , the channel will extend over the entire height of the panel . The intumescent content of the described building panels enables the panels to act as fire breaks for periods in excess of four hours , a period of time normally suf ficient to locate and extinguish a fire . Once a fire has been extinguished, the exposed sheets of any fire af fected panels can be readily removed and replaced with fresh cover sheets .

[0040] It will be appreciated that the foregoing is merely exemplary of fire-resistant panels in accordance with the invention and that modi fications can readily be made thereto without departing from the true scope of the invention as set out in the appended claims .

Claims

CLAIMS1 . A fire-resistant building panel which, in use , defines a part of an external wall of a building, said building panel comprising a rectangular frame which borders a quantity of high density thermally insulating material and comprises upper and lower generally hori zontal frame members each coated on at least one side with a solution including an intumescent material and each connected to generally vertical side frame members also coated on at least one side with a solution which contains an intumescent material , said building panel further comprising a plurality of equally dimensioned sheet members each coated on at least one side with a solution which includes an intumescent material and each adhered to its neighbouring sheet or sheet members , each sheet member being secured to said frame members and dimensioned to match the dimensions of the rectangular frame along the hori zontal sides and one generally vertical s ide of the frame but to extend beyond the other vertical side of the frame to define a channel open to receive an additional vertical frame member of width and depth substantially equal to the width and depth respectively of the channel , the arrangement being such that , i f damaged, one or each outermost sheet member can be removed from the panel and replaced by a fresh sheet member without signi ficant damage to the surface of the underlying panel .2 . A building panel as claimed in claim 1 wherein each external panel member comprises at least three equally dimensioned sheets each coated on at least one side with a solution including an intumescent material .3 . A building panel as claimed in claim 1 or claim 2 wherein each external panel member preferably comprises an inner sheet of oriented strand board ( OSB ) and two sheets of plasterboard .4 . A building panel as claimed in any one of the preceding claims wherein the thickness of sheets is between 10 and 14mm .5 . A building panel as claimed in any one of the preceding claims which includes an internal open-ended channel or conduit which extends downwardly from the upper generally frame member and is dimensioned to receive cabling connectable to a source of electricity .6 . A building panel as claimed in claim 5 wherein said channel or conduit extends along the full height of the panel .7 . A building panel as claimed in any one of the proceeding claims wherein an additional side frame member is provided for attachment to one said vertical side frame member for selective location within said channel .

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