Insulation Board 25mm


- Versatile Celotex GA4000 insulation boards for floors, walls, and roofs.
- Low emissivity foil face enhances thermal performance.
- Environmentally friendly, durable, lightweight, and easy to install with class 1 fire rating.
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- Durable Celotex TB4000 Insulation Board
- Exceptional thermal conductivity (0.022W/mK)
- Cost-effective, strong, easy to install, and long-lasting
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- Eurothane® GP is a high performance, lightweight PIR insulation board, easy to cut, handle, and install for various applications like floors, pitched roofs, internal walls, ceilings, and lofts.
- It is highly favored by contractors and installers for its excellent thermal performance with a λ value of 0.022 W/mK.
- The product ensures a quick and easy installation process, making it an ideal insulation solution.
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- Maximize Energy Efficiency: Thermal conductivity of 0.022 W/mK for reduced heat loss and lower bills.
- Compatibility with Underfloor Heating: Seamless integration for comfort and luxury without compromise.
- Cost Savings & Versatility: Lightweight, easy installation, and suitable for various floor types.
- Regular price
- £128.34
- Sale price
- £128.34
Was £0.00Sold out

- Lightweight PIR insulation board
- High thermal performance & strength
- Eco-friendly, water-resistant, easy to cut
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- Effortless insulation with Kingspan Thermapitch TP10.
- High density increases habitable space by up to 15%.
- Trusted foil-facing technology prevents moisture buildup.
- Regular price
- £128.34
- Sale price
- £128.34
Was £0.00Sold out


- Regular price
- £91.80
- Sale price
- £91.80
Was £0.00Sold out


- Superior rigid insulation: TW55 boasts low GWP, zero ODP, and a thermal conductivity of 0.022 W/m.K.
- User-friendly installation: Ideal for steel/timber frames, CFC/HCFC-free, and water vapor resistant.
- Long-lasting quality: Non-fibrous core, eco-conscious, and available in various sizes at Insulation4less.co.uk.
- Regular price
- £128.34
- Sale price
- £128.34
Was £0.00Sold out


- All-in-one Eco-versal Insulation Board for thermal conductivity (0.022 W/mK)
- Rigid PIR core with aluminum composite foil facing, perfect for roofs, walls, and floors
- Lightweight, easy to cut, and install compared to some other commonly used insulants; offers warmth and durability
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out


- High-performance rigid polyisocyanurate insulation.
- Compatible with PVC single-ply waterproofing.
- Resistant to water vapor, solvents, fungi, and rodents.
- Regular price
- £0.00
- Sale price
- £0.00
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- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out

We're sorry to inform you that we no longer supply the Ballytherm 2.4m x 1.2m insulation product. However, we have several other high quality alternatives to meet your insulation needs.
Thank you for choosing Insulation4Less for your insulation needs. If you have any questions or need further assistance, feel free to contact our customer support team.
- Regular price
- £19.44
- Sale price
- £19.44
Was £0.00Sold out

- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out

- Regular price
- £14.08
- Sale price
- £14.08
Was £0.00Sold out


- Eurothane® GP is a high-performance, lightweight PIR insulation board, easy to cut, handle, and install.
- It's suitable for various applications like floors, pitched roofs, internal walls, ceilings, and lofts with good thermal performance (λ = 0.022 W/mK).
- Preferred by contractors and installers for its quick and easy installation process.
- Regular price
- £13.40
- Sale price
- £13.40
Was £0.00Sold out
Welcome to the comprehensive overview of the 25mm Insulation Board category at Insulation4less, where we explore the versatile and essential world of insulation solutions from various eminent vendors such as Celotex, Recticel, Kingspan, Mannok, EcoTherm, Unilin, Ballytherm, and IKO PIR. These boards, all measuring a standard thickness of 25mm, are designed to serve myriad purposes across different areas of construction, ensuring optimal thermal performance, energy efficiency, and comfort within a building envelope.
General Purpose PIR Insulation Boards
Ceolotex and Recticel Boards
These brands offer reliable and versatile boards like the Celotex GA4000 and Recticel Eurothane GP, suitable for a range of applications, including roof, wall, and floor insulation. Optimal for both new build and refurbishment projects, these general-purpose boards are known for their excellent thermal performance and ease of installation.
EcoTherm Eco-versal Boards
Similarly, EcoTherm Eco-versal insulation boards are suitable for multiple applications, offering a universal solution for thermal insulation needs in varied building applications. These boards are recognized for their excellent compressive strength and long-term durability.
Boards By Application
Floor Insulation
Kingspan Thermafloor TF70 Boards provide a specialised solution for floor insulation, offering enhanced thermal resistance and ensuring minimal heat loss through floors, whether in domestic or commercial spaces.
Roof Insulation
Here we see offerings from Kingspan, such as Thermapitch TP10 and Thermaroof TR27 boards, which are engineered for pitched and flat roof insulation, respectively. They provide premium thermal performance, while also considering aspects like water and vapour resistance, ensuring longevity and stability of roofing systems.
Wall Insulation
Kingspan Thermawall TW55 boards are designed to cater to the specific requirements of steel and timber frame wall applications, delivering optimal thermal resistance, structural integrity, and moisture management.
Property Insulation Boards
IKO Enertherm ALU
Known for its unique aluminium-laminated surfaces, IKO Enertherm ALU not only provides excellent thermal insulation but also reflects radiant heat, creating a more stable and comfortable internal environment.
Unilin Thin-R
With a focus on achieving superior insulating properties in a slim profile, Unilin Thin-R boards are suitable for scenarios where space is a critical factor, ensuring you don't compromise on thermal efficiency in tight spaces.
Ballytherm
While specific details about Ballytherm boards require inquiry, they find their place in applications demanding reliable thermal performance and often cater to both general-purpose and specific insulation needs.
Guidance on Selection
Choosing the right insulation board involves considering factors such as the application area, desired thermal performance, compressive strength, and any specific attributes related to moisture, fire resistance, or reflectivity.
For diverse, non-specific applications, general-purpose boards like Celotex GA4000 or Recticel Eurothane GP often stand out as fitting choices.
When dealing with specialised insulation areas like roofs, walls, or floors, opting for products designed for those applications, such as Kingspan’s Thermafloor, Thermawall, or Thermapitch, will ensure better performance and suitability.
- For projects where reflective insulation or space-saving is paramount, boards like IKO Enertherm ALU and Unilin Thin-R respectively offer tailored solutions.