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Xtratherm

Xtratherm's brand is deeply rooted in the Lambda value. The Lambda value is the inherent insulation value of any material. The lower that lambda value - the greater the insulation value per mm from that product. Xtratherm delivers twice the performance of ordinary insulation - or the same performance using half the thickness of polyiso (PIR). Xtratherm is one of the well-known brand in the UK and Ireland. Choosing the right insulation for your project would make your building comfortable, energy efficient and environmentally sustainable. Xtratherm manufactures not only Polyiso (PIR), but also Phenolic and EPS insulating materials to the highest quality and performance standards using the latest technology and a strict Quality Control process.

Types of Products
  • Multi-purpose Boards,
  • Wall Insulation - Cavity Wall Boards, Framing Boards, Dry-lining Boards, Rainscreen Boards
  • Floor Insulation - Floor Boards, Soffit Boards
  • Roof Insulation - Flat Roof Boards, Pitched Roof Boards
Multi-purpose Boards
  • Xtratherm Thin-r is a foil faced Polyisocyanurate (PIR) insulation board formed by a blowing process which generates rigid foam composed of fine cells filled with Pentane blowing agent trapped within the foam. Pentane has very good insulating properties and gives Thin-r superb insulating capability. Long term performance is ensured by the foil facings which are gas tight. Used for insulating walls, floors and roofs.
  • Xtratherm Safe-R Phenolic Board is a superior performance rigid insulation with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R is faced with low emissivity aluminium facings both sides, and has a thermal conductivity as low as 0.021W/mK. Used for insulating partial fill cavity walls, pitched roofs soffits, solid and suuspended floors and as Rainscreen insulation.
Cavity Wall Boards
  • Xtratherm Thin-R XT/CW Partial Fill Cavity Wall Insulation is the best solution when additional thermal insulation is needed in external masonry walls, without a substantial increase in the width of the cavity. Xtratherm Thin-R boards achieve high standards of insulation whilst maintaining a residual cavity to prevent moisture penetration, without a substantial increase in the width of the cavity and of the overall wall thickness.
  • Xtratherm Cavity Therm wall insulation board is a high performance composite board of enhanced PIR core with a lambda value of 0.021W/mK. The boards have gas tight facings with one face bonded to a profiled HIPS skin during manufacture to provide a drainage plane. Its unique engineered profiled facing directs any moisture might penetrate the external wall down the protective facing and back onto the external leaf, giving added protection from wind  driven rain.
Dry-Lining Boards
  • Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from Xtratherm PIR core faced with composite kraft paper bonded to 9.5mm plasterboard or to 12.5mm plasterboard, specially designed for internal walls dry lining and insulation, due to its closed cell composition and tight facings that provide not only thermal insulation but also high level of moisture resistance and a vapour control layer. The board also provides a level of fire resistance due to the continuous adhesive ribbons, especially around openings, such as those around windows and doors. 
  • Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 25mm Xtratherm Polyiso (PIR) core with foil faces bonded to 9.5mm tapered edge plasterboard or to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in one operation for suitable masonry walls, sloped rafters and ceilings in new build and refurbishment situations. XT/TL-MF is only suitable for mechanical fixed applications
Floor Insulation Boards
  • Xtratherm Thin-R Hyfloor XT/HYF is a high performance floor Insulation board with superior thickness to performance ratio allowing the lower targets required under the new Building Regulations to be achieved with minimum thicknesses. It is a high performance foil faced Polyiso (PIR) insulation with a certified thermal conductivity as low as 0.022W/mK. Manufactured to strict EN 13165 standards, the closed cell structure and gas tight facings provides excellent thermal performance and moisture resistance. It has an engineered jointing to provide improved continuity and unparalleled thermal bridging performance.

Roof Insulation Boards
  • Xtratherm Plydeck is a composite insulated panel of Xtratherm Polyiso PIR core with a composite gas-tight foil face to the underside, bonded to 9mm OSB board. Plydeck is designed to provide high levels of thermal insulation and decking in one operation for new and refurbishment flat roof applications. Bedding the panel onto a bed of mastic creates a continuous vapour control layer. Plydeck does not readily absorb water, making it suitable for use in damp environment.
  • XtroLiner XO/PR board has a core of modified polyiso (PIR) bonded to low emissivity textured aluminium foil facings. It offers excellent insulation performance with thermal conductivity of 0.021 W/mK and a Class ‘O’ fire rating. Using Xtratherm XO/PR on sloped roof areas can provide the most efficient U-values with minimal intrusion into valuable living space. Insulating above and between the roof timbers ensures that the structure is kept at, or near the internal environmental conditions, reducing thermal stress and condensation risk. Placing XtroLiner XO/PR between and/or below the rafter creates a Ventilated Roof.
  • Xtratherm FR-BGM is a Polyiso (PIR) insulation board that is faced with a fleece finished bitumen orglass facers and is suitable for use below partially bonded bitumen based built up roofing systems. FR-BGM can also be used in mechanically fastened or loose laid ballasted bituminous roofing systems. Xtratherm FR/BGM is suitable for use on roof decks that are subject to limited maintenance foot traffic. It is a BBA certified high performance flat and tapered roof insulation board that provides a guaranteed quality solution to flat roof specification.
  • Xtratherm FR/MG is a high performance Polyiso (PIR) with mineral coated glass facers suitable for use below single ply fully adhered roof membranes, single ply waterproofing systems and partially bonded built-up felt. It is suitable for use on roof decks that are subject to maintenance traffic; walk-ways should be provided on roofs requiring regular pedestrian access, and below most single ply fully adhered and mechanically fixed roof membrane systems or loose laid ballasted roofing systems.
tech. support: 0371 222 1055
89mm Plydeck Xtratherm (PIR with OSB Board) - 80mm PIR and 9mm OSB Board
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of an 80mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This advanced panel offers both thermal insulation and decking capabilities in a single application. Application Xtratherm Plydeck..
Guide Price: £54.06
£64.87 inc VAT
99mm Plydeck Xtratherm (PIR with OSB Board) - 90mm PIR and 9mm OSB Board
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of an 90mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This advanced panel offers both thermal insulation and decking capabilities in a single application. Application Xtratherm Plydeck..
Guide Price: £56.10
£67.32 inc VAT
109mm Plydeck Xtratherm (PIR with OSB Board) - 100mm PIR and 9mm OSB Board
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of an 100mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This advanced panel offers both thermal insulation and decking capabilities in a single application. Application Xtratherm Plydec..
Guide Price: £59.21
£71.05 inc VAT
119mm Plydeck Xtratherm (PIR with OSB Board) - 110mm PIR and 9mm OSB Board
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of an 110mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This advanced panel offers both thermal insulation and decking capabilities in a single application. Application Xtratherm Plydec..
Guide Price: £65.54
£78.65 inc VAT
129mm Plydeck Xtratherm (PIR with OSB Board) - 120mm PIR and 9mm OSB Board
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of an 120mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This advanced panel offers both thermal insulation and decking capabilities in a single application. Application Xtratherm Plydec..
Guide Price: £70.48
£84.58 inc VAT
24.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (15mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 (2.88m2)
Delivery Time: 1-3 working days
24.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 15mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £50.48
£60.58 inc VAT
34.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (25mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
34.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 25mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £49.93
£59.92 inc VAT
49.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (40mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
49.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 40mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £59.86
£71.83 inc VAT
59.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (50mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
59.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 50mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £63.56
£76.27 inc VAT
69.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (60mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
69.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 60mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £75.99
£91.19 inc VAT
79.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (70mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
79.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 70mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £81.53
£97.84 inc VAT
89.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (80mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
89.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 80mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £92.48
£110.98 inc VAT
99.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (90mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
99.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 90mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, XT/..
Guide Price: £99.79
£119.75 inc VAT
109.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (100mm PIR Insulation bonded to 9.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
109.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF, this innovative composite insulated panel combines a 100mm Xtratherm Polyiso (PIR) core with foil faces, bonded to 9.5mm tapered edge plasterboard for secure mechanical fixing to internal walls. Ideal for use in new build and refurbishment projects, X..
Guide Price: £99.79
£119.75 inc VAT
37.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (25mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
37.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high-performance rigid insulation board made from a 25mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard. It is specially designed for internal wall dry lining and insulation. Due to its cl..
Guide Price: £57.10
£68.52 inc VAT
52.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (40mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
52.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high-performance rigid insulation board made from a 40mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard. It is specially designed for internal wall dry lining and insulation. Due to its cl..
Guide Price: £67.39
£80.87 inc VAT
62.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (50mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
62.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high-performance rigid insulation board made from a 50mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard. It is specially designed for internal wall dry lining and insulation. Due to its cl..
Guide Price: £70.75
£84.90 inc VAT
72.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (60mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
72.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high-performance rigid insulation board made from a 60mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard. It is specially designed for internal wall dry lining and insulation. Due to its cl..
Guide Price: £83.16
£99.79 inc VAT
82.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (70mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
82.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high-performance rigid insulation board made from a 70mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard. It is specially designed for internal wall dry lining and insulation. Due to its cl..
Guide Price: £88.74
£106.49 inc VAT
27.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (15mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 (2.88m2)
Delivery Time: 1-3 working days
27.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 15mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £50.48
£60.58 inc VAT
37.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (25mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
37.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 25mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £49.93
£59.92 inc VAT
52.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (40mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
52.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 40mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £59.86
£71.83 inc VAT
62.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (50mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
62.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 60mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £63.56
£76.27 inc VAT
72.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (60mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
72.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 60mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £75.99
£91.19 inc VAT
82.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (70mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
82.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 70mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £81.53
£97.84 inc VAT
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
92.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 80mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
102.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (90mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
102.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 90mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining i..
Guide Price: £99.79
£119.75 inc VAT
112.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (100mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Xtratherm Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
112.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 100mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining ..
Guide Price: £97.85
£117.42 inc VAT
Brand: Xtratherm Model and Size: 1200x2400mm - 34.56m2
Delivery Time: 1-3 working days
25mm XtroLiner XO/PR board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. It offers excellent insulation performance with thermal conductivity of 0.021 W/mK and a Class ‘O’ fire rating. XtroLiner XO/PR is CFC & HCFC free and is manufacture..
Brand: Xtratherm Model and Size: 1200x2400mm - 28.80m2
Delivery Time: 1-3 working days
30mm XtroLiner XO/PR board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. It offers excellent insulation performance with thermal conductivity of 0.021 W/mK and a Class ‘O’ fire rating. XtroLiner XO/PR is CFC & HCFC free and is manufa..
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