WO2022066986A1

WO2022066986A1 - Insulation material cladding

Info

Publication number: WO2022066986A1
Application number: PCT/US2021/051866
Authority: WO
Inventors: Harry WALKOFF; Joseph Van Loo; Steven Badger; Brandon STAMBAUGH; Luk SMOUT; Timothy BOVARD; Bobby FERRELL; Collin Smith
Original assignee: Owens Corning Intellectual Capital, Llc; Pittsburgh Corning Europe Nv
Priority date: 2020-09-28
Filing date: 2021-09-24
Publication date: 2022-03-31

Abstract

Disclosed herein is an insulation material cladding, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive. Also disclosed is use of the insulation material cladding to protect insulation material, a clad insulation material including the insulation material cladding and insulation material, a method of installing the insulation material cladding on a surface of an insulation material and a method of manufacturing the insulation material cladding.

Description

INSULATION MATERIAL CLADDING

Cross-Reference to Related Application(s)

[0001] This application claims priority to and any benefit of U.S. Provisional Application No. 63/084,164, filed September 28, 2020, the content of which is incorporated herein by reference in its entirety.

Technical Field

[0002] The present invention relates to a protective insulation material cladding, for example, for cladding insulation in various installations, the use of the insulation material cladding, a method of installing the insulation material cladding onto an insulation material and a method of manufacturing the insulation material cladding.

Background

[0003] Insulation materials are used in various installations to provide insulating properties, such as thermal or acoustic insulation. The insulation material in some installations may be exposed to damage from various sources, including incidental damage and/or environmental conditions. As a result, insulation material is often provided with metal cladding on its exterior surface to protect the insulation material from damage.

[0004] In some circumstances, it is desirable to provide additional protection of the insulation material, for example, against a specific factor such as a vapor barrier. Vapor barriers may include a barrier layer of a polymer to reduce or eliminate the ingress of water to the insulation material. An example of a commercially available vapor barrier is the PITTWRAP® SS Jacketing that includes a polymer modified bitumen compound reinforced with a glass fabric, a 0.03 mm (1 mil) aluminum top film, and a release paper backing.

[0005] Each protective layer of the insulation material needs to be installed by hand. The cost of labor is one of the most significant costs associated with installation of insulation material cladding. In addition, any errors in the installation of the cladding has an impact on time and material costs. Summary of the Disclosure

[0006] There is a desire to streamline the installation of insulation material cladding in order to reduce labor and material costs. At its most general, the present disclosure provides an insulation material cladding comprising a laminate of an external metal cladding layer adhered to an adhesive layer. The combination of the external metal cladding layer and the adhesive layer may provide the insulation material cladding with vapor barrier properties.

[0007] According to a first aspect, the present disclosure provides an insulation material cladding, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive.

[0008] In this aspect the external cladding layer is suitable for providing an external surface of the cladding and providing the insulation material (when installed) with durable protection from, for example, physical damage. The adhesive layer allows the cladding to be adhered onto the insulation material directly, while also providing an adhesive layer to protect the insulation material from environmental conditions, such as water.

[0009] The combination of the external cladding layer and the adhesive layer reduces the time needed to install separate a vapor barrier and steel external cladding. As a result, labor costs may be reduced by using the cladding of the present disclosure. In addition, the integration of the external cladding layer and the adhesive layer before installation may reduce errors during installation and therefore both labor and material costs.

[0010] According to a second aspect, the present disclosure provides use of an insulation material cladding to protect insulation material, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive.

[0011] According to a third aspect, the present disclosure provides a clad insulation material comprising an insulation material and insulation material cladding adhered to a surface of the insulation material, wherein the insulation material cladding comprises an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive adhered to the surface of the insulation material.

[0012] According to a fourth aspect, the present disclosure provides a method of installing an insulation material cladding, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive and wherein the method includes the step of adhering the adhesive layer to a surface of the insulation material.

[0013] According to a fifth aspect, the present disclosure provides a method of manufacturing an insulation material cladding, the method comprising the steps of: Providing an external metal cladding layer; and

- Adhering an adhesive layer comprising a modified butyl rubber adhesive to a surface of the external cladding layer.

[0014] Other aspects and features of the general inventive concepts will become more readily apparent to those of ordinary skill in the art upon review of the following description of various exemplary embodiments in conjunction with the accompanying figures.

Brief Description of the Drawings

[0015] The disclosure herein will now be described in more detail and with reference to the figures as described below.

[0016] Figure 1 shows a schematic cross-section of an insulation material cladding disclosed herein.

[0017] Figure 2 shows a schematic cross-section of a clad insulation material disclosed herein.

Detailed Description

[0018] Several illustrative embodiments will be described in detail with the understanding that the present disclosure merely exemplifies the general inventive concepts. Embodiments encompassing the general inventive concepts may take various forms and the general inventive concepts are not intended to be limited to the specific embodiments described herein.

[0019] While various exemplary embodiments are described or suggested herein, other exemplary embodiments utilizing a variety of methods and materials similar or equivalent to those described or suggested herein are encompassed by the general inventive concepts. [0020] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. In this connection, unless otherwise indicated, concentrations of ingredients given in this document refer to the concentrations of these ingredients in the master batch or concentrate, in keeping with customary practice.

[0021] The general inventive concepts relate to systems for and methods of cladding or otherwise protecting insulation material. While the discussion presented herein is focused on cladding of cellular glass insulation, those of ordinary skill in the art will recognize the applicability of the cladding systems described herein is not limited to the specific embodiments discussed herein.

Insulation material cladding

[0022] The insulation material cladding comprises an external metal cladding layer adhered to an adhesive layer.

External metal cladding layer

[0023] The external metal cladding layer may be of stainless steel. The stainless steel provides a durable external surface of the cladding. Such an external surface may be more resilient to physical damage than, for example, an aluminum external cladding layer of the same or similar thickness. Additionally, the stainless steel external cladding layer may provide compatibility of the insulation material cladding with stainless steel banding (typically used to further secure cladding to insulation material). The stainless steel may be stainless steel 304 or stainless steel 316.

[0024] The thickness of the external metal cladding layer may be in the range of about

0.01 mm to about 0.2 mm. In particular embodiments the thickness of the external metal cladding layer may be in the range of about 0.025 mm to about 0.16 mm. In more particular embodiments the thickness of the external metal cladding layer may be about 1 mil (0.0254 mm), about 2 mils (0.0508 mm), about 3 mils (0.762 mm), about 4 mils (0.102 mm), about 5 mils (0.127 mm) or about 6 mils (0.152 mm).

[0025] In some embodiments the thickness of the external metal cladding layer may be in the range of about 0.025 mm to about 0.075 mm. In more particular embodiments the thickness of the external metal cladding layer may be in the range of about 0.04 mm to about 0.06 mm. In a particular embodiment the thickness of the external metal cladding layer may be about 0.05 mm (2 mils).

[0026] In other embodiments the thickness of the external metal cladding layer may be in the range of about 0.10 mm to about 0.16 mm. In more particular embodiments the thickness of the external metal cladding layer may be in the range of about 0.11 mm to about 0.14 mm. In more particular embodiments the thickness of the external metal cladding layer may be in the range of about 0.12 mm to about 0.13 mm. In a particular embodiment the thickness of the external metal cladding layer may be about 0.127 mm (5 mils).

[0027] The external cladding layer typically has an internal surface adhered to the adhesive layer and an external surface. The external surface may include a modified appearance. For example, the external surface may be polished. In this way, the external appearance of the insulation material cladding may be modified.

Adhesive layer

[0028] The adhesive layer comprises a modified butyl rubber adhesive. Such adhesives combine the adhesive properties required to adhere the external metal cladding layer to the insulation material during installation, while also contributing to the vapor barrier properties of the insulation material cladding.

[0029] Modified butyl rubber adhesives are known perse. Butyl rubber is a copolymer of isobutylene and isoprene. Modification of such butyl rubbers may be after polymerization to form modified butyl rubbers. Typical modification includes reaction with halogens, such as bromine or chlorine to generate modified butyl rubbers known as halobutyl rubbers (or halobutyls). In some embodiments, the adhesive comprises a halobutyl rubber adhesive [0030] In particular embodiments the modified butyl rubber is elastomeric. In this way, the vapor barrier may be resilient to deformation before, during and/or after installation. In particular embodiments the modified butyl rubber is self-adhesive. In this way, the adhesion of the insulation material cladding to the insulation material during installation is simple.

[0031] In particular embodiments, the adhesive consists essentially of the modified butyl rubber adhesive composition. In other words, the adhesive composition containing the modified butyl rubber may be the sole component of the adhesive layer. Commercially available modified butyl rubber adhesive compositions may typically be formulated with components other than the modified butyl rubber. In these embodiments, the commercially available modified butyl rubber adhesive formulation may form the only component of the adhesive. In this way, the manufacturing process of the insulation material cladding is simplified.

[0032] The thickness of the adhesive layer may be in the range of about 0.5 to about 1.5 mm. In particular embodiments the thickness of the adhesive layer is in the range of about 0.75 to about 1.35 mm. In more particular embodiments the thickness of the adhesive layer is in the range of about 0.9 to about 1.2 mm. In a particular embodiment the thickness of the adhesive layer is in the range of about 0.95 mm to about 1.15 mm.

Adhesive backing layer

[0033] In some embodiments the insulation material cladding further includes an adhesive backing layer on the interior surface of the adhesive layer.

[0034] Adhesive backing layers are known perse. Such adhesive backing layers are not typically adhesive themselves. The adhesive backing layer typically protects the adhesive layer from adhering to an unintended surface. The adhesive backing layer may be removed shortly before the adhesive is intended to be adhered to the insulation material.

[0035] The adhesive backing layer may be paper, foil, fabric, or a polymer film (such as biaxially oriented polypropylene, polyvinyl chloride, polyethylene and PET). Flexibility

[0036] The insulation material cladding disclosed herein may be provided as a flexible sheet. The flexibility allows the laminate to be adhered to curved or non-planar surfaces. In particular, the flexibility allows the insulation material cladding to be adhered to the external surface of insulation material surrounding pipes.

[0037] Further the flexibility allows the insulation material to be transported as a rolled material. In some embodiments the insulation material cladding may be provided in the form of a roll of the laminate.

Form of insulation cladding material

[0038] In some embodiments, the insulation material cladding is in the form of a sheet. The sheet may be provided as a larger area than required for any given surface of insulation material. In other words, the sheet of insulation material cladding may be cut to size.

[0039] In some embodiments, the insulation cladding material is a sheet about 1 to about 2 m wide and about 2 to about 20 m long. In a particular embodiment, the insulation cladding material is a sheet about 1 m wide and about 10 m long.

Other properties

[0040] In some embodiments, the total weight of cladding layer and adhesive layer is no more than about 2.5 kg/m². In particular embodiments, the total weight of cladding layer and adhesive layer is no more than about 2.25 kg/m². In more particular embodiments, the total weight of cladding layer and adhesive layer is no more than about 2.1 kg/m². In other embodiments, the total weight of cladding layer and adhesive layer is in the range of about 0.5 to about 2.5 kg/m². In particular embodiments, the total weight of cladding layer and adhesive layer is in the range of about 0.5 to about 2.25 kg/m². In more particular embodiments, the total weight of cladding layer and adhesive layer is in the range of about 0.5 to about 2.1 kg/m².

[0041] In further embodiments, the total weight of cladding layer and adhesive layer is in the range of about 1.5 to about 2.5 kg/m². In particular embodiments, the total weight of cladding layer and adhesive layer is in the range of about 1.75 to about 2.25 kg/m². In more particular embodiments, the total weight of cladding layer and adhesive layer is in the range of about 1.9 to about 2.1 kg/m². In a certain embodiment, the total weight of cladding layer and adhesive layer is about 2.0 kg/m² (for example, 2.02 ± 0.03 kg/m²).

[0042] In some embodiments, the permeance (also referred to as “water vapor transmission”) of the insulation material cladding is: about 0.1144 ng s"¹ m"² Pa"¹ (0.002 US perm) or less as measured by ASTM E96 (Dessicant); about 0.2289 ng s"¹ m"² Pa"¹ (0.004 US perm) or less as measured by ASTM E96

(Wet); or about 0.2861 ng s"¹ m"² Pa"¹ (0.005 US perm) or less as measured by ASTM E96 (EN12086:2013).

[0043] In some embodiments, the tensile strength (machine & transverse) of the insulation material cladding is equal to or greater than about 20 MPa as measured by EN ISO 13934 or ASTM D882.

[0044] In some embodiments, the resistance to tear (Nail Shank - Machine and Transverse) of the insulation material cladding is equal to or greater than 36 MPa as measured by EN12310-1.

[0045] In some embodiments, the resistance to tear (Machine and Transverse) of the insulation material cladding is equal to or greater than about 578 MPa as measured ASTM D4073-06.

[0046] In some embodiments, the puncture resistance of the insulation material cladding is equal to or greater than:

About 53 N with a deflection of about 1.61 mm as measured by EN 14477 (5mm/min);

About 1868N with a deflection of 33 mm as measured by ASTM E154; or About 200 N with a deflection of 1.98 mm as measured by ASTM D1000.

[0047] In some embodiments, the burst strength of the insulation material cladding is equal to or greater than about 3.4 MPa as measured by ASTM D3786. [0048] In some embodiments, the flame spread/smoke developed of the insulation material cladding is 0 out of 5 as measured by ASTM E84.

[0049] In particular embodiments, the insulation material cladding has: a puncture resistance equal to or greater than about 53 N with a deflection of about 1.61 mm as measured by EN 14477 (5mm/min); equal to or greater than about 1868N with a deflection of 33 mm as measured by ASTM E154; or equal to or greater than about 200 N with a deflection of 1.98 mm as measured by ASTM D1000; and a permeance of about 0.1144 ng s"¹ m"² Pa"¹ (0.002 US perm) or less as measured by ASTM E96 (Dessicant); about 0.2289 ng s"¹ m"² Pa"¹ (0.004 US perm) or less as measured by ASTM E96 (Wet); or about 0.2861 ng s"¹ m"² Pa"¹ (0.005 US perm) or less as measured by ASTM E96 (EN12086:2013).

[0050] In more particular embodiments, the insulation material cladding has a puncture resistance equal to or greater than about 53 N with a deflection of about 1.61 mm as measured by EN 14477 (5mm/min) and a permeance of about 0.1144 ng s"¹ m"² Pa"¹ (0.002 US perm) or less as measured by ASTM E96 (Dessicant).

Clad insulation material and use of insulation material cladding

[0051] The present disclosure includes a clad insulation material comprising an insulation material and the insulation material cladding disclosed herein. The adhesive layer of the insulation material cladding is adhered to an exterior surface of the insulation material. In this way, the cladding layer is adhered to an exterior surface of the insulation material by the adhesive layer. In other words, the adhesive layer is an interstitial layer positioned between the cladding layer and the exterior surface of the insulation material.

[0052] In some embodiments, the insulation material is a water sensitive insulation material. In particular embodiments, the insulation material is a cellular glass insulation material. The surface of cellular glass can be adversely affected by moisture, for example, when environmental temperatures cause repeated freezing and thawing of the surface moisture. Additionally, the modified butyl adhesive of the adhesive layer adheres well to cellular glass. [0053] A particular example of cellular glass insulation includes forms of FOAMGLAS® produced by Pittsburgh Corning.

[0054] In particular embodiments, the clad insulation material is installed in or intended to be installed in petrochemical or cryogenic installations. Such installations may experience harsh conditions and benefit from the use of the insulation material cladding described herein.

[0055] The form of insulation material is not particularly limited. For example, the insulation material may be in the form of slabs or cylinders. The flexible insulation material cladding may particularly be used for the cladding of cylindrical insulation material. The flexible insulation material cladding is able to wrap around the cylindrical insulation material.

[0056] In more particular embodiments, the clad insulation material is cellular glass insulation material and is installed in or intended to be installed in petrochemical or cryogenic installations.

Method of installing

[0057] Also disclosed herein is a method of installing the insulation material cladding to insulation material including the step of adhering the adhesive layer of the cladding to a surface of the insulation material. The surface of the insulation material is typically an exterior surface of the insulation material.

[0058] In some embodiments, the method includes an insulation material preparation step before the adhesive layer is adhered to the surface of the insulation material. The insulation material preparation step is a step including preparation of the surface of the insulation material to which the adhesive layer of the insulation materil cladding is to be adhered. The insulation material preparation step may include one or more of the following procedures:

Removal of water from the insulation material surface, including, but not limited to, removal of liquid or solid water (e.g. frost or ice); the removal of surface water typically involves drying of the surface, optionally with heat;

Removal of dust from the insulation material surface;

Removal of loose scale;

Removal of oil; and/or Removal of grease.

[0059] In some embodiments, the method includes the selection of an appropriate area of insulation material cladding for the area of the surface of the insulation material. In particular embodiments, the method includes cutting the insulation material cladding to an appropriate area before adhering to the insulation material.

[0060] In some embodiments, the area of insulation material cladding is larger than the surface area of the insulation material to which the insulation material cladding is to be applied. In this way, an area of overlap may be generated. In some embodiments, the overlap is equal to or greater than about 50 mm along the length of the insulation material. In some embodiments, the overlap is equal to about 50 mm along the length of the insulation material.

[0061] In some embodiments, the method includes applying pressure to the cladding layer after the adhesive layer has contacted the surface of the insulation material to adhere the adhesive layer to the insulation material. Pressure may be applied through a hand or a tool, such as a roller. Applying pressure may be required where the adhesive layer is a self- adhesive layer.

[0062] In embodiments where the insulation material cladding includes an adhesive backing layer adjacent to the adhesive layer, the method includes a step of removing at least part of the adhesive backing layer before adhering the adhesive layer to the surface of the insulation material. In particular embodiments, the method includes the steps of:

Removing a first portion of an adhesive backing layer from the adhesive layer of the insulation material cladding to form a first exposed portion of the adhesive layer;

Then adhering at least part of the first exposed portion of the adhesive layer to the surface of the insulation material;

Then removing a second portion of the adhesive backing layer from the adhesive layer to form a second exposed portion of the adhesive layer; and

Then adhering at least part of the second exposed portion of the adhesive layer to the surface of the insulation material. [0063] In these embodiments, the gradual removal of adhesive backing layer and adhesion of the adhesive layer to the insulation material may facilitate application and/or reduce creasing or wrinkling of the insulation material cladding.

[0064] In some embodiments, the method includes removing a third and optionally further portions of the adhesive backing to form third and optionally subsequent exposed portions of the adhesive layer followed by adhering the third and optionally subsequent exposed portions to the insulation material.

[0065] The removal of portions of the adhesive backing layer and adhesion of the adhesive layer to the insulation layer may be done step-wise or some steps can be done simultaneously. In other words, portions of the adhesive backing layer may be removed at the same time as exposed portions of the adhesive layer are adhered to the surface of the insulation material.

Method of manufacturing

[0066] The present disclosure includes a method of manufacturing an insulation material cladding, the method comprising the steps of:

Providing an external metal cladding layer; and

[0067] In some embodiments, the method includes a subsequent step of contacting an exposed surface of the adhesive layer with an adhesive backing layer.

[0068] Specific examples will now be described with reference to the accompanying figures. The figures are not shown to scale.

[0069] Figure 1 shows a schematic of a cross-section of an insulation material cladding 10. A layer of stainless steel 304 provides an external metal cladding layer 11. The stainless steel layer has a polished upper surface to provide the insulation material cladding with a bright annealed finish. The stainless steel layer is about 0.05 mm thick. This thickness of stainless steel provides strength against external forces and flexibility to allow the insulation material cladding to be applied to, for example, curved insulation material surfaces such as insulated pipes.

[0070] An elastomeric, modified butyl rubber adhesive layer as the adhesive layer 13 is adhered to interior surface of stainless steel layer. The modified butyl rubber adhesive layer is about 1.05 mm thick. The laminate is completed with a polymeric film adhesive backing layer 15 in contact with the adhesive layer on a surface opposite the stainless steel layer.

[0071] Figure 2 shows a schematic of a cross-section of a clad insulation material 20. A cellular glass insulation material 25 has an upper external surface onto which the insulation material cladding of Figure 1 has been applied. The polymeric film adhesive backing layer of Figure 1 has been removed and the exposed surface of the adhesive layer 23 has been applied to the upper external surface of the cellular glass insulation material 25. The stainless steel external cladding layer 21 remains adhered to the adhesive layer 23 to provide the external cladding on the clad insulation material.

[0072] All references to singular characteristics or limitations of the present disclosure shall include the corresponding plural characteristic or limitation, and vice versa, unless otherwise specified or clearly implied to the contrary by the context in which the reference is made.

[0073] All combinations of method or process steps as used herein can be performed in any order, unless otherwise specified or clearly implied to the contrary by the context in which the referenced combination is made.

[0074] All ranges and parameters, including but not limited to percentages, parts, and ratios, disclosed herein are understood to encompass any and all sub-ranges assumed and subsumed therein, and every number between the endpoints. For example, a stated range of “1 to 10” should be considered to include any and all subranges between (and inclusive of) the minimum value of 1 and the maximum value of 10; that is, all subranges beginning with a minimum value of 1 or more (e.g., 1 to 6.1), and ending with a maximum value of 10 or less (e.g., 2.3 to 9.4, 3 to 8, 4 to 7), and finally to each number 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 contained within the range.

[0075] The insulation cladding systems, and corresponding methods of the present disclosure can comprise, consist of, or consist essentially of the essential elements and limitations of the disclosure as described herein, as well as any additional or optional ingredients, components, or limitations described herein or otherwise useful in foam glass composition applications.

[0076] The insulation cladding systems of the present disclosure may also be substantially free of any optional or selected ingredient or feature described herein, provided that the remaining system still contains all of the required elements or features as described herein.

[0077] To the extent that the terms “include,” “includes,” or “including” are used in the specification or the claims, they are intended to be inclusive in a manner similar to the term “comprising” as that term is interpreted when employed as a transitional word in a claim. Furthermore, to the extent that the term “or” is employed (e.g., A or B), it is intended to mean “A or B or both A and B.” When the Applicant intends to indicate “only A or B but not both,” then the term “only A or B but not both” will be employed. Thus, use of the term “or” herein is the inclusive, and not the exclusive use. In the present disclosure, the words “a” or “an” are to be taken to include both the singular and the plural. Conversely, any reference to plural items shall, where appropriate, include the singular.

Claims

1. An insulation material cladding, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive.

2. The insulation material cladding according to claim 1 wherein the external metal cladding layer is a stainless steel cladding layer.

3. The insulation material cladding according to claim 1 or claim 2 wherein the thickness of the external metal cladding layer may be in the range of about 0.01 mm to about 0.2 mm.

4. The insulation material cladding according to any one of claims 1 to 3 wherein the modified butyl rubber is elastomeric and/or self-adhesive.

5. The insulation material cladding according to any one of claims 1 to 4 wherein thickness of the adhesive layer may be in the range of about 0.5 to about 1 .5 mm.

6. The insulation material cladding according to any one of claims 1 to 5 wherein the insulation material cladding further includes an adhesive backing layer in contact with a surface of the adhesive layer.

7. The insulation material cladding according to any one of claims 1 to 6 wherein the external metal cladding layer is selected from stainless steel 304 and stainless steel 316.

8. The insulation material cladding according to any one of claims 1 to 7 wherein the modified butyl rubber adhesive is a halobutyl rubber adhesive.

9. The insulation material cladding according to any one of claims 1 to 8 wherein the insulation cladding material has one or more of the following properties: a) the permeance is:

(i) about 0.1144 ng s"¹ m"² Pa"¹ (0.002 US perm) or less as measured by ASTM E96 (Dessicant); (ii) about 0.2289 ng s ¹ m ² Pa ¹ (0.004 US perm) or less as measured by ASTM E96 (Wet); or

(iii) about 0.2861 ng s"¹ m"² Pa"¹ (0.005 US perm) or less as measured by ASTM E96 (EN12086:2013); b) the tensile strength (machine & transverse) is equal to or greater than about 20 MPa as measured by EN ISO 13934 or ASTM D882; c) the resistance to tear (Nail Shank - Machine and Transverse) is equal to or greater than 36 MPa as measured by EN12310-1; d) the resistance to tear (Machine and Transverse) is equal to or greater than about 578 MPa as measured ASTM D4073-06; e) the puncture resistance is equal to or greater than:

(i) about 53 N with a deflection of about 1.61 mm as measured by EN 14477 (5mm/min);

(ii) about 1868N with a deflection of 33 mm as measured by ASTM E154; or

(iii) about 200 N with a deflection of 1.98 mm as measured by ASTM D1000; f) the burst strength is equal to or greater than about 3.4 MPa as measured by ASTM D3786; and g) the flame spread/smoke developed is 0 out of 5 as measured by ASTM E84. The insulation cladding material according to claim 9 wherein the insulation material cladding has a permeance according to part a) and a puncture resistance according to part e). Use of an insulation material cladding according to any one of claims 1 to 10 to protect insulation material. A method of protecting an insulation material, the method comprising installing an insulation material cladding according to any one of claims 1 to 10 to an exterior of the insulation material. A clad insulation material comprising an insulation material and insulation material cladding adhered to a surface of the insulation material, wherein the insulation material cladding comprises an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive adhered to the surface of the insulation material.

14. The clad insulation material according to claim 13, wherein the external metal cladding layer is selected from stainless steel 304 and stainless steel 316.

15. The clad insulation material according to any one of claims 13 to 14, wherein the modified butyl rubber adhesive is a halobutyl rubber adhesive.

16. The clad insulation material according to any one of claims 13 to 15, wherein the insulation material is cellular glass.

17. A method of installing an insulation material cladding, the cladding comprising an external metal cladding layer adhered to an adhesive layer, the adhesive layer comprising a modified butyl rubber adhesive; the method comprising adhering the adhesive layer to an external surface of the insulation material.

18. The method according to claim 17, wherein the insulation material is cellular glass.

19. The method according to claim 17, wherein the external metal cladding layer is selected from stainless steel 304 and stainless steel 316.

20. The method according to claim 17, wherein the modified butyl rubber adhesive is a halobutyl rubber adhesive.

21. A method of manufacturing an insulation material cladding, the method comprising the steps of:

(i) Providing an external metal cladding layer; and

(ii) Adhering an adhesive layer comprising a modified butyl rubber adhesive to a surface of the external cladding layer.

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