WO2025252531A1 - Isolation en laine minérale - Google Patents

Isolation en laine minérale

Info

Publication number
WO2025252531A1
WO2025252531A1 PCT/EP2025/064584 EP2025064584W WO2025252531A1 WO 2025252531 A1 WO2025252531 A1 WO 2025252531A1 EP 2025064584 W EP2025064584 W EP 2025064584W WO 2025252531 A1 WO2025252531 A1 WO 2025252531A1
Authority
WO
WIPO (PCT)
Prior art keywords
mineral wool
mineral
blanket
panel
fibre fleece
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
PCT/EP2025/064584
Other languages
English (en)
Inventor
Marko Justin
Markus Mente
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.)
Knauf Insulation SPRL
Original Assignee
Knauf Insulation SPRL
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 Knauf Insulation SPRL filed Critical Knauf Insulation SPRL
Publication of WO2025252531A1 publication Critical patent/WO2025252531A1/fr
Pending 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
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/06—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • 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
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
    • E04D3/354—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material more than one of the layers being composed of insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/108—Rockwool fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B32B2419/06—Roofs, roof membranes

Definitions

  • This invention relates to a mineral wool insulation panel particularly for flat roofs, and to a method of manufacturing a mineral wool insulation panel, particularly for flat roofs.
  • a common type of insulated flat roof system comprises, in sequence, a support structure, a layer of insulation and an overlying weatherproof membrane which seals the roofing system against ingress of water.
  • This is sometime referred to as a “warm roof” as the insulation is arranged above the structural deck which is thus kept warm.
  • the weatherproof membrane may be retained by mechanical fixing, by adhesion or by overlying ballast.
  • flat roof means a roof system which is substantially horizontal, that is to say with an inclination of between +5% and -5%; indeed, flat roof systems are generally arranged with an inclination of about 2% to facilitate water run-off.
  • Mineral wool flat roof panels can provide an advantageous combination of thermal performance, longevity, good resistance to fire and flames and ease of installation for flat roofs.
  • one challenge for flat roof mineral wool insulation panels is to provide insulation panels which are also suitable for supporting overlying loads.
  • WO 2018/033558 discloses a roof system which comprises, in sequence: a support structure; a mineral wool insulation panel comprising a mineral wool blanket and a non-woven veil comprising a filler secured to its upper surface by a binder; and an overlying weatherproof membrane secured to the mineral wool insulation panel by an adhesive and discloses that the side of the mineral wool insulation panel provided with the non-woven veil may have a point load resistance (measured in accordance with EN 12430) which is > 650 N, > 750 N, > 800 N or > 900 N.
  • point load resistance is point load resistance as measured and expressed in accordance with EN12430 (as in force on 1 May 2024).
  • a measurement of point load resistance of 725 N in accordance with EN 12430 would be expressed as > 700 N (in accordance with the expression in 50 N “bands” specified in EN 12430).
  • the term “mono-density” in relation to a mineral wool blanket or mineral wool panel means that the mineral wool has a substantially homogeneous density throughout its thickness, notably in which there are no step changes in density between layers of the mineral wool in the sense that when considering adjacent 10mm thick planar layers of mineral wool parallel to the major surfaces, any change in average density between such adjacent layers is ⁇ 10% of the density of the higher density layer.
  • the difference between the core layer density of the mineral wool and each surface layer density is preferably ⁇ 10%, more preferably ⁇ 5%, where the core density layer is the density of a 10mm thick layer positioned at a core of the mineral wool which is equidistant from each major surface, and the surface layer density, for each of the major surfaces, is the density of a 10 mm thick layer positioned immediately below each of the major surfaces.
  • dual density flat roof mineral wool insulation panels may be used (as opposed to mono-density mineral wool panels).
  • the mineral wool blanket of such dual density products comprises a thin, high density surface layer of mineral wool fibres and a lower density underlying layer of mineral wool fibres.
  • the Hardrock® flat roof panel marketed by Rockwool is a dual density mineral wool insulation panel which is certified as having a point load resistance > 1000 N (EN12430).
  • mineral wool insulation panels are provided with non-mineral wool boards at their upper major surface.
  • the Solarrock® insulation panel marketed by Rockwool is a mineral wool panel having a load-distributing cement coating which provides its upper major surface; this product is certified as having a point load resistance > 1800 N (EN 12430).
  • the “Dachdammplatte DDP MAX” mineral wool panel marketed by Knauf Insulation has a 6 mm thick, load-distributing top layer made of an inorganic, fiber-reinforced cement and is certified as having a point load resistance >1800 N (EN12430).
  • One aim of the present invention is to provide a mineral wool panel for a flat roof system which provides an advantageous combination of ease of manufacturing with characteristics which allow the panel to support at least moderate overlying loads whilst also having a modest weight per m 2 .
  • the present invention provides a method of manufacturing a mineral wool insulation panel as defined in claim 1. Additional aspects of the invention are defined in independent claims. The dependent claims define preferred and/or alternative embodiments.
  • the point load resistance of the mineral wool insulation panel is measured subsequent to i) curing the binder of the mineral wool blanket, and ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece with the cured mineral fibre fleece being the major surface in respect of the point load resistance is measured.
  • the point load resistance of the mineral wool blanket is likewise measured subsequent to i) curing the binder of the mineral wool blanket, and ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece but, in addition, subsequent to removing the cured mineral fibre fleece from the surface of the mineral wool insulation panel prior to measuring the point load resistance of the major surface to which the mineral fibre fleece was previously attached.
  • the cured mineral fibre fleece is removed by peeling away from the surface of the mineral wool insulation panel, or by cutting away whilst removing as little of the mineral wool of the mineral wool blanket as possible.
  • the cured mineral wool fleece may be removed by cutting through a layer of mineral wool 1 mm below the major surface of the mineral wool blanket to which the cured miner fibre fleece is attached.
  • One way of doing this is by using a band saw.
  • Measurements of the point load resistance of the mineral wool insulation panel and the point load resistance of the mineral wool blanket are carried out on separate but equivalent samples, for example by cutting a single sample into separate pieces, or by using separate but equivalent samples which have been manufactured or sold together.
  • the present invention provides a roof system comprising, preferably in sequence from the inside to the outside of a building structure: a support structure; a mineral wool insulation panel in accordance with any of the product claims set out herein or manufactured in accordance with any of the method claims set out herein, and a weatherproof membrane overlying the fleece of the mineral wool insulation panel, notably a weatherproof membrane overlying the fleece of the mineral wool insulation panel and secured to the fleece of the mineral wool insulation panel by an adhesive.
  • the support structure may comprise a timber deck, a metal deck or a concrete deck.
  • a vapour control layer for example a polymer sheet, polyethylene sheet, reinforced polyethylene sheet, bitumen layer or bitumen bonded felt, may be provided between the support structure and the mineral wool insulation panel.
  • the roof system may be a warm roof, for example, a warm roof with a built-up felt or asphalt roof covering, a warm roof with a single ply membrane or an inverted/protected membrane/green roof.
  • the mineral wool of the mineral wool insulation blanket is preferably stone wool; this provides an advantageous combination of compression resistance and thermal performance. Nevertheless, the mineral wool of the mineral wool insulation blanket may be glass wool, notably crimped glass wool.
  • the density of the mineral wool insulation blanket of the mineral wool insulation panel may be >80 kg/m 3 or > 90 kg/m 3 ; this provides suitable compression resistance.
  • the density of the mineral wool insulation blanket of the mineral wool insulation panel may be ⁇ 220 kg/m 3 or ⁇ 200 kg/m 3 ; higher densities increase weight without significantly improving performance.
  • the density is preferably in the range 80 - 220 kg/m 3 , more preferably in the range 90-200 kg/m 3 .
  • the mineral wool insulation panel preferably comprises a mono-density mineral wool blanket; it has surprising been found that point load resistances which are suitable for supporting at least moderate overlying loads can be provided using the present invention with a mono-density mineral wool blanket.
  • a dual density mineral wool blanket may be used, that is to say a mineral wool blanket comprising a high density surface layer of mineral wool (notably having i) a thickness which is > 5mm and/or ⁇ 40 mm and/or ii) a density which is > 130 kg/m 3 and/or ⁇ 250 Kg/m 3 ) and a lower density underlying layer of mineral wool (notably having i) a thickness which is > 45mm and/or ⁇ 400 mm and/or ii) a density which is > 100 kg/m 3 and/or ⁇ 185 kg/m 3 ).
  • a dual density mineral wool blanket there is a step change in density between at least two adjacent layers of the mineral wool in the sense that when considering adjacent 10mm thick planar layers of mineral wool parallel to the major surfaces, there is a step change in average density between at least two such immediately adjacent layers which is > 10 % of the density of the layer having the higher density.
  • a step change in density of 80 kg/m 3 i.e.
  • the thermal conductivity of the mineral wool insulation panel may be ⁇ 41 mW/m.K; it is preferably ⁇ 40 mW/m.K and more preferably ⁇ 39 mW/m.K. This provides suitable thermal performance.
  • reference to “thermal conductivity”, to “lambda” and to “A” means thermal conductivity measured at 10 °C in accordance with EN 13162.
  • Reference to a “A group” means the declared value according to EN 13162 (rounded up to the next milliwatt).
  • the mineral wool insulation blanket comprises a mineral wool binder which serves to hold its mineral wool together, notably an organic, thermoset binder.
  • the mineral wool binder may make up > 2 wt%, > 2.5 wt% or > 3 wt% and/or ⁇ 7 wt% or ⁇ 6 wt% or ⁇ 5 wt% of the mineral wool insulation blanket.
  • the binder content may be determined by LOI (loss on ignition).
  • the mineral wool binder may be a phenol formaldehyde based binder, particularly extended with urea. Alternatively, the mineral wool binder and the mineral wool insulation panel may be formaldehyde free.
  • the mineral wool insulation panel (comprising the mineral wool binder) preferably comprises less than 5 ppm or less than detectable limits of free formaldehyde and/or consist of materials which together comprise less than these amounts of free formaldehyde and/or releases levels of formaldehyde in standardised tests adapted to simulate ordinary use which allows it to be classified as having no or undetectable levels of formaldehyde release.
  • such products release less than 10pg/m 3 , more preferably less than 5 pg/m 3 of formaldehyde during the period of 24-48 hours from the start of testing in accordance with ISO 16000.
  • the mineral wool binder may be a sugar-based binder, that is to say a binder which is the reaction product(s) of a binder solution whose solid content comprises at least 50 wt% sugar(s).
  • the mineral wool binder may be the reaction product(s) of a binder solution whose solid content comprises at least 70 wt% reducing sugar(s), preferably in combination with a source of nitrogen to form a Maillard reaction product, notably in combination with preferably at least 10 wt% of i) amine(s) and/or ii) ammonium salt(s) of carboxylic acid(s).
  • the fibres of the mineral wool may be orientated substantially perpendicular to the panel’s major surfaces; alternatively, they may be crimped.
  • the mineral wool insulation panel may have a crimp factor which is > 1 .1 , > 1.2, > 1.3 > 1.5 or > 2 and/or ⁇ 4 or ⁇ 3.5.
  • the crimp factor provides an indication of the degree of crimping and thus of fibre re-orientation; it may be assessed by comparing i) the manufacturing line speed of the mineral wool prior to crimping, notably the line speed of the secondary blanket in the case of stone wool insulation with ii) the manufacturing line speed of the mineral wool panel after crimping, notably the line speed of the mineral wool blanket through the curing oven.
  • a crimp factor of 3 indicates a line speed after curing of 1/3 of the line speed prior to crimping.
  • the mineral wool insulation panel preferably has a compressive strength which is > 60 kPa, preferably > 70 kPa. Unless otherwise stated, compression strength and other properties of the mineral wool insulation panel should be measured in accordance with EN13162 and the specific standards referred to therein.
  • the mineral wool insulation panel preferably has a fire classification of at least B; more preferably it has a fire classification of Euroclass A1 or A2 as determined under EN 13501-1.
  • the mineral fibre fleece comprising an uncured stiffening agent is preferably sufficiently air permeable to allow forced air which passes through the mineral wool blanket during passage of the mineral wool blanket through a curing oven the pass, likewise, through the mineral fibre fleece. This allows for the possibility of assembly of the mineral fibre fleece with the mineral wool blanket prior to passage of the assembly through a curing oven.
  • the mineral fibre fleece is preferably secured to the upper surface of the mineral wool blanket by the same binder as that present in the mineral wool blanket.
  • the mineral fibre fleece is applied to one of the major surfaces of a mineral wool blanket as the blanket moves along a manufacturing line, preferably with application of additional binder, notably the same binder present in the mineral wool blanket, notably in a quantity of 5-50 g/m 2 , preferably 10-20 g/m 2 between the mineral fibre fleece and the mineral wool blanket prior to passage through a curing oven to cure the mineral wool binder, for example by applying the additional binder either to a surface of the mineral wool blanket or, preferably, to a surface of the mineral fibre fleece.
  • the mineral fibre fleece may not be passed through a curing oven; it may be secured to the upper surface of the mineral wool insulation blanket after the mineral wool has passed through a curing oven.
  • the binder by which the mineral fibre fleece is secured to the upper surface of the mineral wool insulation blanket may be a hot melt binder, a thermoset binder, an organic binder, an inorganic binder, a poly(vinyl acetate) binder, a polyurethane binder or a water glass binder. It may be a binder as described above in relation to mineral wool binders.
  • the binder by which the mineral fibre fleece is secured to the upper surface of the mineral wool insulation panel may be present in an amount which is > 5 g/m 2 , > 10 g/m 2 or > 15 g/m 2 and/or ⁇ 50 g/m 2 , ⁇ 40 g/m 2 or ⁇ 30 g/m 2 .
  • the mineral fibre fleece comprises non-woven mineral fibres.
  • a mineral fibre fleece which is a non-woven and which comprises an uncured but curable stiffening agent, particularly where the stiffening agent comprises one or more inorganic fillers and an organic stiffening binder, allows a surprising combination of features to be achieved, notably a combination of i) the ability to provide the mineral fibre fleece comprising the uncured stiffening agent in the form of a roll which can be unrolled when applying the mineral fibre fleece to the mineral wool blanket, ii) the ability to provide a plurality of passages through the mineral fibre fleece, notably having a spread distribution of opening sizes, the larger openings preferably permitting passage of air through the fleece during manufacture and the passage of adhesive through the fleece to secure the membrane whilst the smaller openings preferably block passage of the adhesive whilst still contributing during manufacture to passage of air, iii) the ability to cure the curable stiffening agent of the mineral fibre
  • the fibres of the mineral fibre fleece are preferably held together by a fleece fibre binder, preferably a thermoset binder, for example a PVC binder or a PVC based binder.
  • the fleece fibre binder may be a binder as described above in relation to mineral wool binders.
  • a preferred fleece fibre binder is a thermoset polyvinyl alcohol based binder.
  • the fleece fibre binder may be present in a quantity which is > 5 wt% or > 8 wt% and/or ⁇ 30 wt% or ⁇ 28 wt% with respect to the mineral fibres of the mineral fibre fleece, preferably in the range 10 to 20 wt% with respect to the mineral fibres of the mineral fibre fleece.
  • the mineral fibre fleece may comprise a water repellent or hydrophobic agent, for example a fluorocarbon, which (when present) preferably forms part of the fleece fibre binder, notably being present in an amount > 0.5 wt% or > 1 wt% and/or ⁇ 2 wt% or ⁇ 1.5 wt% with respect to the mineral fibres of the mineral fibre fleece.
  • a water repellent or hydrophobic agent for example a fluorocarbon, which (when present) preferably forms part of the fleece fibre binder, notably being present in an amount > 0.5 wt% or > 1 wt% and/or ⁇ 2 wt% or ⁇ 1.5 wt% with respect to the mineral fibres of the mineral fibre fleece.
  • the mineral fibre fleece may comprise a flame retardant, for example comprising a phosphate, borate, hydroxide or aluminium hydroxide.
  • the stiffening agent of the mineral fibre fleece preferably comprises an inorganic filler, for example comprising calcium oxide, calcium carbonate, calcium hydroxide, aluminium hydroxide, aluminium trihydrate, clay, talc, magnesium silicate, hydrated magnesium silicate, magnesium dihydroxide, titanium dioxide, zinc oxide, or mixtures thereof.
  • the filler, or the combination of filler and flame retardant (when used) may be present in the mineral fibre fleece in an amount which is > 40 wt%, or > 45 wt% or > 50 wt% or > 55 wt% and/or ⁇ 90 wt%, or ⁇ 80 wt%, or ⁇ 70 wt% with respect to the mineral fibres of the mineral fibre fleece.
  • the filler comprises talc
  • this may provide hydrophobic characteristics.
  • the filler comprises AI2O3
  • the stiffening agent of the mineral fibre fleece preferably comprises a stiffening binder, notably an organic stiffening binder for example selected from a PVC binder a PVC based binder, a polyvinyl alcohol-based binder, an acrylic co-polymer based binder, a styrene based copolymer binder, a styrene-acrylic co-polymer based binder, a mixture of a polyvinyl alcohol and an acrylic co-polymer, and a mixture of a polyvinyl alcohol and a styrene-containing copolymer.
  • a stiffening binder is a thermoset polyvinyl alcohol-based binder.
  • the stiffening binder may be present in an amount which is > 3 wt%, preferably > 5 wt%, more preferably > 6 wt%, with respect to the amount of filler, or with respect to the combination of filler and flame retardant (when used). This provided for a suitable increase in stiffness of the mineral fibre fleece when it is cured to provide desired levels of point load resistance.
  • the stiffening binder may be present in an amount which is ⁇ 20 wt%, preferably ⁇ 15 wt% with respect to the amount of filler, or with respect to the combination of filler and flame retardant (when used). Greater amounts of stiffening binder do not provide commensurate improvements.
  • the stiffening agent is preferably arranged so that it least partially fills interstices between the mineral fibres of the mineral fibre fleece.
  • the mineral fibre fleece comprising the stiffening agent may be produced by applying the stiffening agent to on only one of the major surfaces of a mineral fibre veil, or by applying the stiffening agent to each of the two the major surface of a mineral fibre veil.
  • the mineral fibre fleece may be formed by applying the uncured stiffening agent to a mineral fibre veil, notably a non-woven veil, having a weight which is > 30 g/m 2 or > 40 g/m 2 or > 45 g/m 2 and/or ⁇ 110g/m 2 or ⁇ 100g/m 2 , or ⁇ 80g/m 2 .
  • the mineral fibre fleece, including the stiffening agent may have a weight which is > 130 g/m 2 or > 150 g/m 2 or > 200 g/m 2 or > 250 g/m 2 or > 300 g/m 2 and/or ⁇ 500 g/m 2 , or ⁇ 450 g/m 2 or ⁇ 400 g/m 2 .
  • the mineral fibre fleece (including the stiffening agent) may have a weight which is > 200 g/m 2 or > 250 g/m 2 and/or ⁇ 550 g/m 2 or ⁇ 450 g/m 2 .
  • the stiffening agent is applied to a non-woven mineral fibre veil which comprises a cured fleece fibre binder.
  • the amount of uncured stiffening agent applied to the veil may be > 100 g/m 2 , preferably > 120 g/m 2 ; this provides a useful stiffening effect (once cured).
  • the amount of uncured stiffening agent applied to the veil may be ⁇ 500 g/m 2 , preferably ⁇ 400 g/m 2 ; this provides a useful stiffening effect (once cured) combined with a facility for rolling the mineral fibre fleece (prior to curing of the stiffening agent).
  • the fibres of the mineral fibre fleece may be selected such that at least 80% of the fibres by weight have a diameter which is: AA 0.8-1-2pm; A 1.2-2.5pm; B 2.5-3.8 pm; C3.8- 5.0 pm; D 5.0-6.4 pm; E6.4-7.6 pm; F 7.6-9.0 pm; G 9.0-10.2 pm; H 10.2-11.4 pm or J 11.4- 12.7 pm.
  • the mineral fibre fleece may have a width which is > 1.5 m or > 1.8 m and/or ⁇ 2.6 m or ⁇ 2.4 m.
  • the mineral fibre fleece is preferably supplied in the form or a roll; this facilitates application to the mineral wool insulation blanket.
  • Such a roll may have: an external diameter which is > 0.5 m or > 0.8m and/or ⁇ 1.6 m or ⁇ 1 .4 m; it may comprise a continuous length of veil which is > 400 m or > 500 and which is preferably ⁇ 1000 m or ⁇ 800 m . This facilitates handling.
  • the weatherproof membrane may be a single ply membrane. It may be selected from a bitumen membrane, a fully bonded built-up bitumen membrane, mastic asphalt, a polymer membrane, a PVC membrane; an EPDM (ethylene propylene diene terpolymer) membrane; a membrane applied in liquid form.
  • the adhesive may be a “hot melt” adhesive, for example a bitumen or bitumen-based adhesive.
  • the hot melt adhesive may be applied in liquid form, for example poured on to or spread over the mineral wool insulation panel prior to application of the membrane.
  • the adhesive may be contained within the membrane and released by heating the membrane, for example by torching a bituminous membrane.
  • the adhesive may be a cold adhesive; it may be a polymer adhesive.
  • the adhesive may be a polyurethane adhesive, a polyacrylic adhesive, a rubber adhesive or a rubber contact adhesive.
  • the adhesive may be applied at a viscosity in the range 750 to 6000 cps; the quantity of adhesive may be > 50 g/m 2 , or > 100 g/m 2 or > 150 g/m 2 and/or ⁇ 800g/m 2 , or ⁇ 600g/m 2 , or ⁇ 500g/m 2 , or ⁇ 350 g/m 2 .
  • the side of the mineral wool insulation blanket to which the mineral fibre fleece is secured may have a point load resistance which is in the range >400 N to >1200 N (i.e. point load resistance of the mineral wool insulation blanket without the mineral fibre fleece).
  • the roofing system may comprise anchors, notably mechanical fixations, to secure the weatherproof membrane, for example to secure the weatherproof membrane to the mineral wool insulation panel and/or to the support structure.
  • anchors notably mechanical fixations
  • no such anchors are used, the adhesion between the weatherproof membrane and the mineral wool insulation panel providing sufficient peel strength.
  • between one and four such anchors are used per mineral wool insulation panel; common know comparable roof systems require a greater number of anchors.
  • the exposed mineral fibre fleece reducing water ingress into the mineral wool insulating panel and/or providing UV protection
  • One significant advantage of the present method and mineral wool insulating panels is the ability to provide a mineral wool insulation panel which is adapted for general use for a flat roof (as opposed, for example to flat roof mineral wool insulation boards provided with a cement board at their upper major surface, the cement board significantly increasing the weight of the panel without contributing significantly to thermal performance) whilst providing a level of point load resistance which can support appliances or act as a walkway.
  • This allows an entire flat roof surface to be fitted with the present mineral wool insulating panels, and any part of the flat roof to be used as a walkway or for supporting appliances, either when the roof is initially constructed, or if additional appliances are installed during the lifetime of the flat roof.
  • Fig 1 is a schematic side view of a warm roof system
  • Fig 2 is a schematic, partially cut away perspective view of an insulation panel.
  • the warm deck, single ply roof system 10 of Fig 1 comprises (in sequence from the interior to the exterior of a building) a support structure 11 provided by a metal deck, an optional vapour control layer 12, a mineral wool insulation panel 13, and a overlying weatherproof membrane 14, in this case a single ply membrane, secured to the mineral wool panel 13 by an adhesive (not shown).
  • the mineral wool insulation flat roof panel 13 comprises a monodensity mineral wool blanket 22 provided on its upper surface with mineral fibre fleece 23 comprising a cured stiffening agent.
  • the mineral wool panel 13 is manufactured by: - providing a mineral wool blanket comprising mineral wool and an uncured mineral wool binder;
  • the examples relate to equivalent samples manufactured together on the same manufacturing line using the same manufacturing settings so as to make direct comparison possible.
  • the mineral fibre fleece used for PLR(new) had a weight of 400 g/m 2 (including the stiffening agent), and including a non-woven glass fleece having a weight of 60 g/m 2 .
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein, subsequent to i) curing the binder of the mineral wool blanket, and ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, the mineral fibre fleece confers an increase in point load resistance to the mineral wool insulation panel with respect to the point load resistance of the mineral wool blanket such that the point load resistance of the mineral wool insulation panel (measured and
  • Feature 2 A method of manufacturing a mineral wool insulation panel in accordance with feature 1 , wherein the point load resistance of the mineral wool insulation panel (measured and expressed according to EN 12430) is greater than the point load resistance of the mineral wool blanket (measured and expressed according to EN 12430) by a value which is in the range 300 to 700 N, preferably in the range 400 to 600 N.
  • Feature 3 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: a) a mineral wool insulating panel in A group 35, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 750 to 1050 N, preferably in the range 800 to 1000 N.
  • Feature 4 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: b) a mineral wool insulating panel in A group 36, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 850 to 1150 N, preferably in the range 900 to 1100 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: c) a mineral wool insulating panel in A group 37, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1050 to 1350 N, preferably in the range 1100 to 1300 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: d) a mineral wool insulating panel in A group 38, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1000 to 1300 N, preferably in the range 1050 to 1250 N.
  • Feature 7 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: e) a mineral wool insulating panel in A group 39, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1050 to 1350 N, preferably in the range 1100 to 1300 N.
  • Feature 8 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: f) a mineral wool insulating panel in A group 40, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1150 to 1450 N, preferably in the range 1200 to 1400 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: g) a mineral wool insulating panel in A group 41, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: h) a mineral wool insulating panel in A group 34, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 900 to 1200 N, preferably in the range 950 to 1150 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: i) a mineral wool insulating panel in A group 35, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1000 to 1300 N, preferably in the range 1050 to 1250 N.
  • Feature 12 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: j) a mineral wool insulating panel in A group 36, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1200 to 1500 N, preferably in the range 1250 to 1450 N.
  • Feature 13 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: k) a mineral wool insulating panel in A group 37, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1150 to 1450 N, preferably in the range 1200 to 1400 N.
  • Feature 14 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: l) a mineral wool insulating panel in A group 38, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • a method of manufacturing a mineral wool insulation panel comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: m) a mineral wool insulating panel in A group 39, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • Feature 16 A method of manufacturing a mineral wool insulation panel, notably a method in accordance with feature 1 or feature 2, the method comprising: providing a mineral wool blanket comprising mineral wool and an uncured binder, and applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, wherein the method comprises i) curing the binder of the mineral wool blanket, ii) securing the mineral fibre fleece to the major surface of the mineral wool blanket, and iii) curing the stiffening agent of the mineral fibre fleece so as to provide the mineral wool insulation panel, wherein the mineral wool insulation panel is: n) a mineral wool insulating panel in A group 40, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1550 to 1850 N, preferably in the range 1600 to 1800 N.
  • Feature 17 A method of manufacturing a mineral wool insulation panel in accordance with any of features 1 to 16, in which the method is a method of manufacturing a flat roof mineral wool insulation panel having a compressive strength of at least 60 kPa (EN13162).
  • Feature 18 A method in accordance with any preceding feature, in which the applying of a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket, comprises applying the mineral fibre fleece to the mineral wool blanket comprising mineral wool and an uncured binder to provide an uncured assembly, and in which the method comprises subsequently passing the uncured assembly through a curing oven to i) cure the binder of the mineral wool blanket, and ii) secure the mineral wool fleece to the major surface of the mineral wool blanket.
  • Feature 19 A method in accordance with feature 18, in which passing the uncured assembly through a curing oven comprises passing heated air through the mineral wool blanket and through the mineral fibre fleece of the uncured assembly.
  • Feature 20 A method in accordance with feature 18 or feature 19, in which passing the uncured assembly through a curing oven cures the stiffening agent of the mineral fibre fleece.
  • Feature 21 A method in accordance with and of features 1 to 17, wherein the method comprises i) curing the binder of the mineral wool blanket, notably by passing the mineral wool blanket comprising mineral wool and an uncured binder through a curing oven ii) subsequently securing the mineral fibre fleece to the major surface of the mineral wool blanket, notably subsequent to the mineral wool blanket exiting the curing oven, and iii) subsequently curing the stiffening agent of the mineral fibre fleece.
  • Feature 22 A method in accordance with any preceding feature, in which the curing of the stiffening agent of the mineral fibre fleece comprises contacting the mineral fibre fleece with a heated roller.
  • Feature 23 A method in accordance with any preceding feature, in which the curing of the stiffening agent of the mineral fibre fleece comprises exposing the mineral fibre fleece to ultraviolet radiation.
  • Feature 24 A method in accordance with any preceding feature, in which the method comprises providing the mineral fibre fleece comprising an uncured stiffening agent in the form of a roll of a mineral fibre fleece comprising an uncured stiffening agent, and in which the applying a mineral fibre fleece comprising an uncured stiffening agent to a major surface of the mineral wool blanket comprises unrolling a portion of the mineral fibre fleece comprising an uncured stiffening agent from the roll of mineral fibre fleece comprising an uncured stiffening agent and applying an unrolled portion of the mineral fibre fleece to a major surface of the mineral wool blanket.
  • the mineral fibre fleece comprises a non-woven veil, notably a non-woven glass veil, particularly a non-woven veil having fibres which consist of glass fibres.
  • the stiffening agent of the mineral fibre fleece comprises an inorganic filler, notably at least one inorganic filler selected from calcium oxide, calcium hydroxide, aluminium hydroxide, clay, talc, magnesium silicate, hydrated magnesium silicate and mixtures thereof.
  • Feature 27 A method in accordance with any preceding feature, in which the stiffening agent comprises an organic stiffening binder, notably a PVC binder or a PVC based binder.
  • the stiffening agent comprises an organic stiffening binder, notably a PVC binder or a PVC based binder.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel manufactured in accordance with any preceding feature, the mineral wool insulation panel comprising
  • the mineral fibre fleece comprises a cured stiffening agent, and in which the mineral fibre fleece confers an increase in point load resistance to the mineral wool insulation panel with respect to the point load resistance of the mineral wool blanket such that the point load resistance of the mineral wool insulation panel (measured and expressed according to EN 12430) is greater than the point load resistance of the mineral wool blanket (measured and expressed according to EN 12430) by at least 300 N, preferably at least 400 N, more preferably at least 450 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: a) a mineral wool insulating panel in A group 35, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 750 to 1050 N, preferably in the range 800 to 1000 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: b) a mineral wool insulating panel in A group 36, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 850 to 1150 N, preferably in the range 900 to 1100 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: c) a mineral wool insulating panel in A group 37, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1050 to 1350 N, preferably in the range 1100 to 1300 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: d) a mineral wool insulating panel in A group 38, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1000 to 1300 N, preferably in the range 1050 to 1250 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: e) a mineral wool insulating panel in A group 39, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1050 to 1350 N, preferably in the range 1100 to 1300 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: f) a mineral wool insulating panel in A group 40, the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1150 to 1450 N, preferably in the range 1200 to 1400 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: g) a mineral wool insulating panel in A group 41 , the mineral wool blanket being a monodensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: h) a mineral wool insulating panel in A group 34, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 900 to 1200 N, preferably in the range 950 to 1150 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: i) a mineral wool insulating panel in A group 35, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1000 to 1300 N, preferably in the range 1050 to 1250 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: j) a mineral wool insulating panel in A group 36, the mineral wool blanket being a dual- density mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1200 to 1500 N, preferably in the range 1250 to 1450 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: k) a mineral wool insulating panel in A group 37, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1150 to 1450 N, preferably in the range 1200 to 1400 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: l) a mineral wool insulating panel in A group 38, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: m) a mineral wool insulating panel in A group 39, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1350 to 1650 N, preferably in the range 1400 to 1600 N.
  • a mineral wool insulation panel notably a flat roof panel, preferably a mineral wool insulation panel in accordance with feature 28, the mineral wool insulation panel comprising
  • the mineral wool insulation panel is: n) a mineral wool insulating panel in A group 40, the mineral wool blanket being a dualdensity mineral wool blanket and the mineral wool insulating panel having a point load resistance in the range 1550 to 1850 N, preferably in the range 1600 to 1800 N.
  • Feature 43 A mineral wool insulation panel in accordance with any of features 28 to 42, wherein the mineral wool panel is a flat roof mineral wool insulation panel, notably wherein the mineral wool panel is a flat roof mineral wool insulation panel installed on a flat roof.
  • Feature 44 A mineral wool insulation panel in accordance with any of features 28 to 42, wherein the mineral wool panel has a compressive strength of at least 60 kPa (EN13162).
  • Feature 45 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as a roof board of a flat roof.
  • Feature 46 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as a roof board of a flat roof to provide a walkway on the flat roof.
  • Feature 47 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as a roof board of a flat roof to support solar panel on the flat roof.
  • Feature 48 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as a roof board of a flat roof to support an air conditioning unit on the flat roof.
  • Feature 49 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as a roof board of a flat roof to support an antenna on the flat roof.
  • Feature 50 Use of a mineral wool panel manufactured in accordance with any of features 1 to 27, or of a mineral wool panel in accordance with any of features 28 to 44, as to provide a walkable insulation board in an attic of a building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

Panneau d'isolation en laine minérale, notamment panneau de toit, comprenant - une plaque d'isolation en laine minérale ayant une surface principale, et - une nappe de fibres minérales ayant un agent de raidissement durci fixé à une surface principale de la plaque d'isolation en laine minérale, la nappe de fibres minérales ayant un agent de raidissement durci contribuant à conférer une résistance de charge ponctuelle d'au moins 300 N (EN 12430) au panneau d'isolation en laine minérale.
PCT/EP2025/064584 2024-06-03 2025-05-27 Isolation en laine minérale Pending WO2025252531A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB2407826.3A GB202407826D0 (en) 2024-06-03 2024-06-03 Mineral wool insulation
GB2407826.3 2024-06-03

Publications (1)

Publication Number Publication Date
WO2025252531A1 true WO2025252531A1 (fr) 2025-12-11

Family

ID=91852278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/064584 Pending WO2025252531A1 (fr) 2024-06-03 2025-05-27 Isolation en laine minérale

Country Status (2)

Country Link
GB (2) GB202407826D0 (fr)
WO (1) WO2025252531A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031895A1 (fr) 1997-01-20 1998-07-23 Rockwool Limited Toit composite
WO2018033558A1 (fr) 2016-08-17 2018-02-22 Knauf Insulation Sprl Isolation en laine minérale
EP3666989A1 (fr) * 2018-12-14 2020-06-17 Knauf Insulation doo Skofja Loka Isolation en laine minérale
US20220168994A1 (en) * 2019-04-05 2022-06-02 Rockwool International A/S Insulation element for thermal and/or acoustic insulation of a flat or flat inclined roof and method for producing an insulation element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031895A1 (fr) 1997-01-20 1998-07-23 Rockwool Limited Toit composite
WO2018033558A1 (fr) 2016-08-17 2018-02-22 Knauf Insulation Sprl Isolation en laine minérale
EP3666989A1 (fr) * 2018-12-14 2020-06-17 Knauf Insulation doo Skofja Loka Isolation en laine minérale
US20220168994A1 (en) * 2019-04-05 2022-06-02 Rockwool International A/S Insulation element for thermal and/or acoustic insulation of a flat or flat inclined roof and method for producing an insulation element

Also Published As

Publication number Publication date
GB202407826D0 (en) 2024-07-17
GB2700976A (en) 2026-04-01
GB202508179D0 (en) 2025-07-09

Similar Documents

Publication Publication Date Title
EP3341193B1 (fr) Isolation en laine minérale
US10344484B2 (en) Composite thermal insulation system
US8178449B2 (en) Fire resistant slipsheet
US20090208714A1 (en) Pre-coated non-woven mat-faced gypsum panel
CA2844575C (fr) Element d'isolation pour un toit plat ou un toit incline plat, systeme de toiture pour un toit plat ou un toit incline plat et procede pour produire un element d'isolation
EP1710337A1 (fr) Mats non-tissés de fibres polymères et leur procédé de fabrication
DK159073B (da) Undertagsbane for haeldende tage
US4948655A (en) Composite panel and method of manufacturing waterproof roofings
KR101710604B1 (ko) 우레탄수지를 이용한 건물 옥상 슬라브의 방수시공방법
EP3666989A1 (fr) Isolation en laine minérale
US20220168994A1 (en) Insulation element for thermal and/or acoustic insulation of a flat or flat inclined roof and method for producing an insulation element
US12152390B2 (en) Thermal and/or acoustic insulation system as waterproofing for a flat or a flat inclined roof of a building and method for producing a thermal and/or acoustic insulation system as waterproofing
US20220333383A1 (en) Metal roofing system
US20250154768A1 (en) Reusable insulated roof system and method
EP2316641A1 (fr) "Le composite d'isolation (KWI) à structure de la double couche et la couverture contenent le composite d'isolation (KWI)"
EP2053178A2 (fr) Elément isolant
EP4239251B1 (fr) Système de chauffage au sol
EP1990478B1 (fr) Structure de toit d'immeuble
MXPA97006590A (en) Roofing members who have improved dimensional stability and related methods
RS1752U1 (sr) Višeslojna vodonepropusna podloga krovne pokrivke
CA2216026A1 (fr) Elements de toiture a stabilite dimensionnelle amelioree et methodes connexes
MXPA97006591A (es) Miembros de techado compuestos, que tienen mejorada estabilidad dimensional y metodos relacionados
Superseding USACE/NAVFAC/AFCESA/NASA UFGS-07 22 00 (August 2011)
CS264193B1 (sk) Sposob výroby povlakovej strešnej krytiny

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25729739

Country of ref document: EP

Kind code of ref document: A1