Categories
Online Shopping Blog
Today's Deals
Categories
Online Shopping Blog
Today's Deals
Categories
Online Shopping Blog
Today's Deals
Categories
Online Shopping Blog
Today's Deals
Best Pir Insulation Board 50mm of 2026
Last updated on 04/04/2026
Advertising disclosure
Advertising disclosure
Most Relevant
Most Relevant
Best Discount
Lowest Price
Electronics
Home & Kitchen
Computers
Office Supplies
Toys & Games
Sports & Fitness
Home
DIY & Tools
Categories
Building Supplies
Building Materials
Roofing
Household Insulation
Panel Insulation
Most Relevant
Most Relevant
Best Discount
Lowest Price
Best Choice
1
Kingspan / Ectotherm / Celotex P.I.R Insulation 50mm x 2400mm x 1200mm (8ft x 4ft) Insulation Boards (10)
MD Carpentry Workshop
Why we love it
High-performance insulation.
Energy-efficient.
Versatile application.
Main Highlights
Kingspan / Ectotherm / Celotex P.I.R Insulation 50mm x 2400mm x 1200mm (8ft x 4ft) insulation boards HIGH PERFORMANCE RIGID URETHANE INSULATION THAT COMES WITH FOIL ON BOTH SIDES
ON OFFER THIS LISTING IS 2400X1200MM VARIOUS THICKNESS CELOTEX TB4000/GA4000/XR4000 (CODE DEPENDS ON THICKNESS) /KINGSPAN TP10/TF70. PRODUCT SUPPLIED WILL BE EITHER KINGSPAN, RECTICEL EUROTHANE, ECOTHERM ECOVERSAL, XTRATHERM OR IKO ENERTHERM - ALL PRODUCTS HAVE IDENTICAL SPECIFICATION. IF THE BRAND IS IMPORTANT, PLEASE CHECK BEFORE PURCHASING
Pitched Roofing Applications; Eurothane GP is a high performance rigid PIR foam board for use in pitched roofing applications. Eurothane GP, in a wide range of thicknesses, will assist in meeting the appropriate Building Regulations standard with any form of pitched roof construction.
Flooring Applications; Eurothane GP is a high performance rigid PIR foam board for use in ground and intermediate exposed floors. Ideal for heated floors, the use of Eurothane GP boards will ensure optimum system efficiency.
Framed Wall Applications; Eurothane GP, available in a wide range of thicknesses will assist in meeting the appropriate Building Regulation standard with any form of timber or metal framed wall construction.
Show More
9.8
Exceptional
Check Price
9.8
Exceptional
MD Carpentry Workshop
Kingspan / Ectotherm / Celotex P.I.R Insulation 50mm x 2400mm x 1200mm (8ft x 4ft) Insulation Boards (10)
Check Price
Show More
Why we love it
High-performance insulation.
Energy-efficient.
Versatile application.
Main Highlights
Kingspan / Ectotherm / Celotex P.I.R Insulation 50mm x 2400mm x 1200mm (8ft x 4ft) insulation boards HIGH PERFORMANCE RIGID URETHANE INSULATION THAT COMES WITH FOIL ON BOTH SIDES
ON OFFER THIS LISTING IS 2400X1200MM VARIOUS THICKNESS CELOTEX TB4000/GA4000/XR4000 (CODE DEPENDS ON THICKNESS) /KINGSPAN TP10/TF70. PRODUCT SUPPLIED WILL BE EITHER KINGSPAN, RECTICEL EUROTHANE, ECOTHERM ECOVERSAL, XTRATHERM OR IKO ENERTHERM - ALL PRODUCTS HAVE IDENTICAL SPECIFICATION. IF THE BRAND IS IMPORTANT, PLEASE CHECK BEFORE PURCHASING
Pitched Roofing Applications; Eurothane GP is a high performance rigid PIR foam board for use in pitched roofing applications. Eurothane GP, in a wide range of thicknesses, will assist in meeting the appropriate Building Regulations standard with any form of pitched roof construction.
Flooring Applications; Eurothane GP is a high performance rigid PIR foam board for use in ground and intermediate exposed floors. Ideal for heated floors, the use of Eurothane GP boards will ensure optimum system efficiency.
Framed Wall Applications; Eurothane GP, available in a wide range of thicknesses will assist in meeting the appropriate Building Regulation standard with any form of timber or metal framed wall construction.
Show More
Value for Money
2
Buildershop UK 2400 x 1200 x 50mm Celotex GA4050/Kingspan TP10/TF70 (12 Sheets)
Buildershop UK
Why we love it
Versatile for roofs, floors, walls.
Supplied depending on location.
Supports non-mainland addresses.
Main Highlights
Celotex, Kingspan, Ecotherm or a direct equivalent PIR insulation will be supplied depending on location.
Please note a delivery charge may be payable if you require your order to be delivered to a location in Scotland, Wales or to a non mainland address or LA/CA postcodes
Multi use foil faced PIR rigit insulation board suitable for roofs, floors and walls.
Show More
9.8
Exceptional
Check Price
9.8
Exceptional
Buildershop UK
Buildershop UK 2400 x 1200 x 50mm Celotex GA4050/Kingspan TP10/TF70 (12 Sheets)
Check Price
Show More
Why we love it
Versatile for roofs, floors, walls.
Supplied depending on location.
Supports non-mainland addresses.
Main Highlights
Celotex, Kingspan, Ecotherm or a direct equivalent PIR insulation will be supplied depending on location.
Please note a delivery charge may be payable if you require your order to be delivered to a location in Scotland, Wales or to a non mainland address or LA/CA postcodes
Multi use foil faced PIR rigit insulation board suitable for roofs, floors and walls.
Show More
3
2400mm x 1200mm x 50mm Celotex GA4050 / Kingspan TP10 / TF70 / Ecotherm Ecoversal Foil Insulation (7)
Generic
Why we love it
Efficient temperature control feature.
Broad coverage area.
Top-quality material used.
Main Highlights
7 x 50mm x 2400mm x 1200mm Celotex Insulation Boards
Please note in certain areas you may receive a direct equivalent.
Show More
9.7
Exceptional
Check Price
9.7
Exceptional
Generic
2400mm x 1200mm x 50mm Celotex GA4050 / Kingspan TP10 / TF70 / Ecotherm Ecoversal Foil Insulation (7)
Check Price
Show More
Why we love it
Efficient temperature control feature.
Broad coverage area.
Top-quality material used.
Main Highlights
7 x 50mm x 2400mm x 1200mm Celotex Insulation Boards
Please note in certain areas you may receive a direct equivalent.
Show More
4
5 X RECTICEL / CELOTEX / KINGSPAN Insulation Board 100MM X 2400MM X 1200MM EURTHANE GP FOIL Back PIR, Silver
RECTICEL
Why we love it
Great for diverse construction needs.
Compatible with underfloor heating.
Hassle-free pack deal availability.
Main Highlights
5 X RECTICEL PIR INSULATION SHEET 100MM X 2400MM X 1200MM
Application Pitched roofs. Framed walls. Floors - compatible with underfloor heating systems.
PLEASE NOTE: YOU MAY RECEIVE EITHER RECTICEL XTRATHERM OR CELOTEX
NEED A PACK DEAL, PLEASE MESSAGE FUTURE BUILD SUPPLIES LTD
Show More
9.6
Superb
Check Price
9.6
Superb
RECTICEL
5 X RECTICEL / CELOTEX / KINGSPAN Insulation Board 100MM X 2400MM X 1200MM EURTHANE GP FOIL Back PIR, Silver
Check Price
Show More
Why we love it
Great for diverse construction needs.
Compatible with underfloor heating.
Hassle-free pack deal availability.
Main Highlights
5 X RECTICEL PIR INSULATION SHEET 100MM X 2400MM X 1200MM
Application Pitched roofs. Framed walls. Floors - compatible with underfloor heating systems.
PLEASE NOTE: YOU MAY RECEIVE EITHER RECTICEL XTRATHERM OR CELOTEX
NEED A PACK DEAL, PLEASE MESSAGE FUTURE BUILD SUPPLIES LTD
Show More
5
10x PIR Insulation Boards 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
NOVECRAFTO
Why we love it
Strong thermal performance is unbeatable.
Versatile for various insulation needs.
Easy to cut and fit.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Size & Weight – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). The pack of 10 pieces covers 5.4 m² (58.12 ft²).
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
9.6
Superb
Check Price
9.6
Superb
NOVECRAFTO
10x PIR Insulation Boards 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
Check Price
Show More
Why we love it
Strong thermal performance is unbeatable.
Versatile for various insulation needs.
Easy to cut and fit.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Size & Weight – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). The pack of 10 pieces covers 5.4 m² (58.12 ft²).
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
6
PIR Insulation Board 8x4 (2400x1200) Various Thicknesses (100mm)
ASTON BUILDING SUPPLIES LTD
Why we love it
Eco-friendly insulation solution.
Excellent thermal performance.
Durable and energy-saving.
Main Highlights
This environmentally friendly insulation board is manufactured using a blowing agent with zero ozone depletion potential (ODP) and low global warming potential (GWP). It has low-emissivity foil facings that provide improved thermal insulation performance. With a thermal conductivity of 0.022 W/mK, excellent water vapor resistance, and a compressive strength of 140kPa, this insulation board ensures reliable long-term energy savings for buildings.
2400x1200 Sheet Size
50mm, 75mm and 100mm
Show More
9.6
Superb
Check Price
9.6
Superb
ASTON BUILDING SUPPLIES LTD
PIR Insulation Board 8x4 (2400x1200) Various Thicknesses (100mm)
Check Price
Show More
Why we love it
Eco-friendly insulation solution.
Excellent thermal performance.
Durable and energy-saving.
Main Highlights
This environmentally friendly insulation board is manufactured using a blowing agent with zero ozone depletion potential (ODP) and low global warming potential (GWP). It has low-emissivity foil facings that provide improved thermal insulation performance. With a thermal conductivity of 0.022 W/mK, excellent water vapor resistance, and a compressive strength of 140kPa, this insulation board ensures reliable long-term energy savings for buildings.
2400x1200 Sheet Size
50mm, 75mm and 100mm
Show More
7
PIR Insulation Board 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
NOVECRAFTO
Why we love it
Excellent thermal insulation performance.
Versatile for various applications.
Lightweight and easy to handle.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Lightweight and Easy to Handle – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). Easy for one person to carry, cut, and install, saving time and effort on home or outdoor projects.
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
9.4
Superb
Check Price
9.4
Superb
NOVECRAFTO
PIR Insulation Board 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
Check Price
Show More
Why we love it
Excellent thermal insulation performance.
Versatile for various applications.
Lightweight and easy to handle.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Lightweight and Easy to Handle – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). Easy for one person to carry, cut, and install, saving time and effort on home or outdoor projects.
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
8
5X PIR Insulation Boards 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
NOVECRAFTO
Why we love it
Excellent thermal insulation efficiency.
Versatile for various applications.
Quick and easy installation process.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Size & Weight – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). The pack of 5 pieces covers 2.7 m² (29.06 ft²).
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
9.3
Superb
Check Price
9.3
Superb
NOVECRAFTO
5X PIR Insulation Boards 1200 x 450 x 50 mm; 47.2 x 17.7 x 2 in, One Panel Covers 0.54m² (5.81 ft²), Rigid Thermal Panel with Aluminum Foil on Both Sides for Walls, Roofs, Floors and Sheds
Check Price
Show More
Why we love it
Excellent thermal insulation efficiency.
Versatile for various applications.
Quick and easy installation process.
Main Highlights
Strong Thermal Performance – Built with rigid PIR (polyisocyanurate) foam and aluminium foil facings on both sides, the boards deliver excellent insulation with a declared thermal conductivity of λD: 0.022 W/(m·K) (EN 13165). The foil layer reflects radiant heat, helping reduce heat loss in winter and overheating in summer.
Versatile Use Across Surfaces – Suitable for wall cavity insulation, flat roof insulation, floor upgrades, and shed insulation. Also used in DIY projects such as camper conversions and pet enclosures. Improves comfort in homes, lofts, garages, and outbuildings by keeping the indoor climate stable year-round.
Size & Weight – Each rigid insulation board measures 1200 x 450 x 50 mm (47.2" x 17.7" x 2") and weighs 1.1 lbs (0.5kg), and covers 0.54 m² (5.81 ft²). The pack of 5 pieces covers 2.7 m² (29.06 ft²).
Quick to Cut and Fit – The rigid insulation foam can be trimmed with a sharp knife or fine saw for accurate sizing, while the foil face adds durability. Designed for hassle-free installation.
Durable, Rigid and Reliable – A 100% CFC, HCFC, and HFC-free insulation board. This thick insulation board 50mm is resistant to moisture and tested for mechanical strength, providing long-lasting performance in building and renovation projects, including floor, roof and wall insulation. Fire safety tested to EN 13501-1 Class E.
Show More
9
50mm PIR Insulation Board, 400mm x 1200mm, Pack of 6
Generic
Why we love it
Excellent thermal insulation properties.
Suitable for multiple applications.
Lightweight, easy to install.
Main Highlights
Rigid Insulation: This 50mm PIR insulation board provides excellent thermal insulation properties to help reduce energy costs.
Versatile Application: Suitable for use in floors, walls, and roofs in new-build and renovation projects.
Easy Installation: Lightweight yet sturdy boards measure 400mm x 1200mm for convenient handling and installation.
Moisture Resistant: The closed-cell structure resists moisture ingress, ensuring long-lasting performance.
Pack Contents: Each pack contains 6 insulation boards, covering an area of 2.88m2
Show More
9.1
Superb
Check Price
9.1
Superb
Generic
50mm PIR Insulation Board, 400mm x 1200mm, Pack of 6
Check Price
Show More
Why we love it
Excellent thermal insulation properties.
Suitable for multiple applications.
Lightweight, easy to install.
Main Highlights
Rigid Insulation: This 50mm PIR insulation board provides excellent thermal insulation properties to help reduce energy costs.
Versatile Application: Suitable for use in floors, walls, and roofs in new-build and renovation projects.
Easy Installation: Lightweight yet sturdy boards measure 400mm x 1200mm for convenient handling and installation.
Moisture Resistant: The closed-cell structure resists moisture ingress, ensuring long-lasting performance.
Pack Contents: Each pack contains 6 insulation boards, covering an area of 2.88m2
Show More
10
PIR Insulation 8x4 (2400x1200) Celotex/Kingspan/Unilin Various Thicknesses (50mm)
Generic
Why we love it
Large sheet size available.
Diverse thickness options offered.
Multiple brands stocked locally.
Main Highlights
Please note we may provide many brands (all equal specs) depending on the brand stocked locally to you
2400x1200 Sheet Size
25mm, 50mm, 75mm and 100mm
Show More
9.0
Superb
Check Price
9.0
Superb
Generic
PIR Insulation 8x4 (2400x1200) Celotex/Kingspan/Unilin Various Thicknesses (50mm)
Check Price
Show More
Why we love it
Large sheet size available.
Diverse thickness options offered.
Multiple brands stocked locally.
Main Highlights
Please note we may provide many brands (all equal specs) depending on the brand stocked locally to you
2400x1200 Sheet Size
25mm, 50mm, 75mm and 100mm
Show More