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Celotex

Celotex is the UK’s leading manufacturer of premium performance PIR insulation and remains the insulation specialist of choice. Celotex  Polyisocyanurate (PIR) insulation is the UK’s fastest growing insulation category, providing the perfect solution for meeting current and future Building Regulations and other carbon reduction programmes. PIR insulation delivers high thermal performance allowing homes and buildings to achieve premium levels of energy efficiency and with some of the thinnest possible solutions. The Celotex Company of Great Britain started trading in 1925, and was a subsidiary of its parent company, the Celotex Corporation of America.  The new PIR foam board manufacturing line started in 1978.

From September 2012 Celotex was acquired Saint-Gobain, the world leader in the habitat and construction markets. Celotex manufactures a wide range of high performance PIR insulation products, suitable for a variety of building applications offering thermal performance as low as 0.021 W/mK. Celotex achieves better U-values with a thinner solution helping to optimise space. Celotex products are supported with approvals and certificates from leading industry organisations. The highest quality Celotex products are available on-line at Insulation Shop, UK.

Celotex is able to produce boards as low as 12mm up to 95mm thick in a high speed continuous process. A second manufacturing line produces thicker panels and targets maximum efficiency for boards of 100-200mm thick. Both production lines produce a range of thicknesses in the standard panel sizes of 450x1200mm and 2400x1200mm. Flat Roofing products are available in thicknesses from 50-150mm in either 600x1200mm for bonded single-ply and built-up flat roofing applications and 2400x1200mm for mechanically fixed single ply systems. 

Celotex PIR insulation is leading in energy efficiency and sustainable construction providing the best solutions to assist with the reduction in carbon emissions and reducing fuel usage. Celotex products fully comply with BS EN 13165 and their performance characteristics have been verified through independent testing.

Types of Products
  • Multi-Purpose Insulation 
  • Cavity Wall Insulation,
  • Insulated Plasterboards,
  • Floor Insulation Boards,
  • Roof Insulation Boards
Multi-Purpose Insulation
  • Celotex TB4000 is a high performance PIR insulation ideal for overcoming thermal bridging and for use in two layer build ups, including between and under rafters and over stud in timber frame wall lining applications. It is available as thin as 12mm. It includes low emissivity foil facings offering enhanced thermal performance within cavity air spaces. It is suitable for use in a number of applications including roof, wall and floor systems.
  • Celotex GA4000 is a multi-purpose PIR insulation board that achieves an A+ rating when compared to the BRE Green Guide. It is suitable for a variety of applications, including roof, wall and floor insulation. It offers high performance insulation with low emissivity foil facings offering enhanced thermal performance within cavity air space.
Cavity Wall Insulation
  • Celotex CG5000 is manufactured from rigid polyisocyanurate (PIR) and faced with low emissivity textured aluminium foil facings. It is especially designed for partial fill cavity wall insulation, offering great thermal performance due to substantial R and U values. It has a super low lambda value of 0.021 W/mK delivering better U-values and thinner solutions and is certified under BBA certificate number 16/5343.
  • Celotex CW4000 is a simple solution for partial fill cavity walls that offers high performance PIR insulation with low emissivity foil facings offering enhanced thermal performance within cavity air spaces. Its enhanced features deliver thinner solutions that meet target U-values as required by Building Regulations including Part L and BREEAM. It is certified under BBA certificate number 16/5343.
  • Celotex CF5000 is a premium performance PIR insulation board that is suitable for use in full fill cavity wall applications. It makes use of the whole cavity width and optimises thermal performance through the wall achieving a lower U-value without having to widen the cavity and comes in dimensions to fit with standard cavity wall tie spacing. CF5000 has been mechanically engineered with a rebated edge to eliminate the passage of moisture. It is certified under BBA certificate number 16/5343.
Insulated Plasterboards
  • Celotex PL4000 comprises PIR insulation bonded to tapered edge plasterboard and is available in a broad range of insulation thicknesses as thin as 15mm. It is BBA certified. It allows for the installation of both the insulation and plasterboard in one operation, thereby reducing installation time and labour costs. It can be used to upgrade to current building regulation standards in pitched roof, flat roof and wall applications.
  • Celotex GD5000 is a premium performance PIR insulation board bonded to 12.5mm tapered edge plasterboard and is available in a broad range of insulation thicknesses as thin as 25mm. It also allows for the installation of both the insulation and plasterboard in one operation, thereby reducing installation time. It has an advantage over traditional PIR insulation boards due to the decreased thickness - even 15% thinner than the common PIR boards. Suitable for both dot and dab bonding and mechanically fixed installation techniques.
Floor Insulation Boards
  • Celotex FI5000 is a premium flooring insulation board with enhanced thermal performance as well as an A rating when compared to the BRE Green Guide and an innovative cement compatible composite facer with a built-in vapour control layer, enabling direct screed, without the need for an additional separating layer. FI5000 has an enhanced compressive strength value of ?175 kPa making it the ideal solution for a range of flooring applications. Featuring a super low lambda of 0.021W/mK, FI5000 achieves compliance to UK Building Regulations with better U-values and thinner solutions.
Roof Insulation Boards
  • Celotex Crown-Fix is a brand new product for use in flat roof systems. It is a high performance rigid polyisocyanurate (PIR) insulation which delivers excellent dimensional stability and added robustness in a mechanically fixed single ply membrane flat roofing system. Low lambda 0.022W/mK offering high thermal performance.
  • Celotex Crown-Bond is a brand new product for use in flat roof systems. Crown-Fix is a high performance rigid polyisocyanurate (PIR) insulation which delivers excellent dimensional stability and added robustness in a bonded single ply membrane flat roofing system. Low lambda 0.022W/mK offering high thermal performance.
  • Celotex Crown-Up is a brand new product for use in flat roof systems. Crown-Fix is a high performance rigid polyisocyanurate (PIR) insulation which delivers excellent dimensional stability and added robustness in a built-up flat roofing system. Low lambda 0.022W/mK offering high thermal performance.
Celotex Handy Guide
tech. support: 01473 820 850
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4020 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
£28.41
£34.09 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4025 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
£14.04
£16.85 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4030 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
£16.34
£19.61 inc VAT
35mm Celotex TB4000 PIR Insulation Board - TB4035
Guide Price
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4035 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
Guide Price: £43.10
£51.72 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4040 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
£19.09
£22.91 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
50mm Celotex GA4050 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£20.41
£24.49 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
60mm Celotex GA4060 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£24.83
£29.80 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
70mm Celotex GA4070 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£29.33
£35.20 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
75mm Celotex GA4075 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£29.18
£35.02 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
80mm Celotex GA4080 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£32.29
£38.75 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
90mm Celotex GA4090 is a versatile insulation board designed to address localized thermal bridge issues. With low emissivity foil facings, this board is constructed from durable polyisocyanurate (PIR) using a blend of eco-friendly blowing agents that have zero ozone depletion potential (zero ODP) an..
£34.65
£41.58 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
100mm Celotex GA4100 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone dep..
£35.31
£42.37 inc VAT
110mm Celotex XR4000 PIR Insulation Board - XR4110
Guide Price
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4110 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4110 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4110 is ma..
Guide Price: £42.90
£51.48 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4120 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4120 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4120 is ma..
£43.52
£52.22 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4130 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4130 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4130 is ma..
£49.74
£59.69 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4140 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4140 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4140 is ma..
£50.60
£60.72 inc VAT
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4150 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4150 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4150 is ma..
£63.03
£75.64 inc VAT
165mm Celotex XR4000 PIR Insulation Board (pack of 6) - XR4165
Guide Price
Brand: Celotex Model and Size: 1200x2400mm -17.28m2
Delivery Time: 3 - 7 days
Celotex XR4165 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4165 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4165 is ma..
Guide Price: £403.92
£484.70 inc VAT
Brand: Celotex Model and Size: 1200x2400mm -17.28m2
Delivery Time: 5 - 7 days
Celotex XR4200 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4200 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4200 is ma..
£489.93
£587.92 inc VAT
Brand: Celotex Model and Size: 1190x450mm - 3.24m2
Delivery Time: 2 - 4 days
90mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solut..
£75.98
£91.18 inc VAT
115mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 5)
Guide Price
Brand: Celotex Model and Size: 1190x450mm - 2.7m2
Delivery Time: up to 7 days
115mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solu..
Guide Price: £81.31
£97.57 inc VAT
140mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 4)
Guide Price
Brand: Celotex Model and Size: 1190x450mm - 2.16m2
Delivery Time: up to 7 days
140mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solu..
Guide Price: £86.29
£103.55 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
Celotex PL4025 is a high performance thermal insulation board where the 25mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4000 range is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global..
£40.60
£48.72 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
52.5mm Celotex PL4040 is a high-performance thermal insulation board with PIR insulation bonded to 12.5mm tapered edge plasterboard. It is made from rigid polyisocyanurate (PIR) using blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP). Note: ..
£49.27
£59.12 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
62.5mm Celotex PL4050 is a high-performance thermal insulation board with 50mm PIR insulation bonded to 12.5mm tapered edge plasterboard. It is made from rigid polyisocyanurate (PIR) using blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP). N..
£55.62
£66.74 inc VAT
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
72.5mm Celotex PL4060 is a high-performance thermal insulation board where the 60mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4000 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low globa..
£57.97
£69.56 inc VAT
77.5mm Celotex PL4065 - 65mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000) 77.5mm Celotex PL4065 - 65mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000)
Guide Price
Brand: Celotex Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1 - 5 working days
77.5mm Celotex PL4065 is a high performance thermal insulation board where the 65mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4000 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low globa..
Guide Price: £68.52
£82.22 inc VAT
40mm Celotex CW4040 - Rigid PIR Cavity Insulation Board (pack of 14) CW4000
Guide Price
Brand: Celotex Model and Size: 1200mm x 450mm - 7.56m2
Delivery Time: 1 - 5 working days
40mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigid pol..
Guide Price: £53.97
£64.76 inc VAT
Brand: Celotex Model and Size: 1200mm x 450mm - 5.94m2
Delivery Time: 1 - 5 working days
50mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
£50.11
£60.13 inc VAT
60mm Celotex CW4060 - Rigid PIR Cavity Insulation Board (pack of 10) CW4000
Guide Price
Brand: Celotex Model and Size: 1200mm x 450mm - 4.32m2
Delivery Time: 1 - 5 working days
60mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
Guide Price: £52.64
£63.17 inc VAT
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