Dimensions 2400 × 1200 mm
Brand

Celotex

Thickness

25mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

1

Sales Unit

Board

Unit Coverage

2.88m2

Manufacturers Reference

TB4025

Thermal Conductivity

0.022W/mK

Density

31kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

0.95kg/m2

Product Range

Celotex TB4000

Useful Information
25mm Celotex is a multi-purpose board and can be used for all applications

Celotex 25mm PIR Insulation Board – TB4025 (2400mm x 1200mm x 25mm) 2.88m2

(16 customer reviews)
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Useful Information
25mm Celotex is a multi-purpose board and can be used for all applications

Celotex 25mm PIR Insulation Board

Celotex TB4025 is a highly versatile PIR board from Celotex. This multi-purpose rigid insulation board is ideal for a variety of applications. This includes solid floors, pitched roofs, flat roofs, masonry walls and steel framed and timber framed systems. 25mm Celotex is easy to handle and boasts excellent thermal qualities. This is a reason why the TB4025 25mm Celotex PIR board is so popular. Celotex TB4025 forms part of the TB4000 range. The Celotex brand is a part of the Saint-Gobain family. Saint-Gobain is a leading manufacturer of insulation boards. The Celotex TB4000 range is at the very core of the Celotex product range. This makes the TB4025 (25mm Celotex) variation a leading choice in construction projects.

Celotex 25mm insulation boards are made from rigid polyisocyanurate (PIR). TB4025 insulation boards have zero ozone depletion potential, which is known in the industry as zero ODP. It also boasts low global warming potential (GWP). Celotex 25mm Insulation Board features aluminium low emissivity foil facings on both sides. This innovative foil-facing technology vastly improves thermal performance in sealed cavity air spaces.

Celotex 25mm insulation board is a high-performing PIR board that is environmentally friendly. It is designed to reduce energy bills and therefore reduce carbon footprint. In the summer months, it also reduces the need for air conditioning as it will keep the heat out. The 25mm Celotex PIR board boasts outstanding performance when used in timber frames and masonry walls. 25mm Celotex insulation board has a thermal conductivity rating of 0.022W/mK. In addition to this, the TB4025 has a Green Guide Rating of A, which is the standard set by the BRE (Building Research Establishment). A rating of A means that the TB4025 board rates great for environmental performance. This means not only is 25mm Celotex better for the planet, but it can also help provide long-term energy savings.

Celotex 25mm Features

  • Easy to cut and therefore shape
  • Celotex is cost-effective
  • Good reaction to fire in accordance with EU standards
  • A durable and reliable insulation board
  • Made from high-performing PIR
  • Provides long-term energy savings for buildings
  • Features low emissivity foil facings for enhanced performance

TB4025 Application

25mm Celotex insulation boards can be used in a variety of applications. For example, this includes flat roofs, pitched roofs, solid masonry walls, floors, timber-framed, and steel-framed systems. The industry-leading board is easy to cut and shape for use. Furthermore, it can be dot and dabbed. Celotex insulation boards provide long-term energy savings for buildings. 25mm Celotex is manufactured in accordance with quality management systems (BS EN ISO 9001:2000). Celotex 25mm is quick and easy to install therefore making it a great choice for building projects. TB4025 is just one of many products that make up the TB4000 range. Full application types of this 25mm insulation board can be found below.

  • Concrete Slab (Ground Floor)
  • Suspended Timber Joist (Ground Floor)
  • Beam and Block (Ground Floor)
  • Upgrading Existing Concrete Slab (Ground Floor)
  • Timber Frame Internal Linings (External Wall)
  • Timber Frame Sheathing (External Wall)
  • Between Timber Frame Studs (External Wall)
  • Solid Masonry Internal Linings (External Wall)
  • Over Timber Rafters (Pitched Roof)
  • Sarking (Pitched Roof)
  • Below Timber Rafters (Pitched Roof)
  • Between Timber Rafters (Pitched Roof)
  • Loft insulation – Between and Over Timber Joists (Pitched Roof)
  • Balconies & Terraces Over Joists (Flat Roof)
  • Between Timber Joists (Flat Roof)
  • Below Timber Joists (Flat Roof)

25mm Celotex

Get our best price available on all Celotex boards. Order now for quick delivery and save on your project today. Are you looking for a different thickness of Celotex Insulation? We sell a range of Celotex products on our website. Furthermore, we sell a whole range of top brands at trade prices. If you need help, get in touch with us. Our friendly team of experts is at hand to give you advice.

Celotex has a broad selection of insulation board thicknesses. The thickness can range from 12mm up to 200mm.
Visit the following link for all Celotex Insulation Boards

This product has square edges and measures 2.4m in length and 1.2m in width. The total coverage for this product is 2.88m2.

Download the BBA certificate

If you want further information on this product, you can visit the Celotex website. Here you can find full product specifications as well as full datasheets.

At Trade Insulations, we take pride in providing top brands at trade prices. Why pay more for your insulation when you can use us?

Did you know that the TB4025 is one of our top-rated products? 25mm Celotex is by far the best-selling product on our website, and we continue to honour our very best prices on this quality PIR insulation board.

Do you have an upcoming project that requires 25mm Celotex? Order online now for express delivery. Our friendly team will be in touch to confirm your date and work with you to ensure that the whole process runs smoothly. Furthermore, we take customer satisfaction very seriously and go the extra mile to help our customers. As a result, we are 5-star rated online. We are a supplier you can trust. Finally, an insulation supplier that won’t let you down!


Dimensions 2400 × 1200 mm
Brand

Celotex

Thickness

25mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

1

Sales Unit

Board

Unit Coverage

2.88m2

Manufacturers Reference

TB4025

Thermal Conductivity

0.022W/mK

Density

31kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

0.95kg/m2

Product Range

Celotex TB4000

Dimensions 2400 × 1200 mm
Brand

Celotex

Thickness

25mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

1

Sales Unit

Board

Unit Coverage

2.88m2

Manufacturers Reference

TB4025

Thermal Conductivity

0.022W/mK

Density

31kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

0.95kg/m2

Product Range

Celotex TB4000

16 reviews for Celotex 25mm PIR Insulation Board – TB4025 (2400mm x 1200mm x 25mm) 2.88m2

  1. Adam

    Great product!

  2. Benjamin

    Great product and great price

  3. dave f

    Excellent board and the best price I could find online. Brand new as promsied and even got a follow up call. 5 stars from me

  4. David Nesson

    Used instead of Celotex 20mm – great alternative.

  5. Nolan prescott

    Always handy to have 25mm boards for a project – cheapest ones!

  6. Trevor Holdings

    Ordered some 25mm Celotex, was given a price by my builder and to do the job, ended up doing it myself and saved myself £1200, easy to cut and fit on your own.

  7. Stephan Belltor

    25mm Celotex was just a couple of mm too big should of got 20mm Celotex – do require more boards in a couple of months will return and get 20mm

  8. Yusef

    delivery was quick. driver was able to get down my road fine where other companies have struggled

  9. Lisa Tate

    Very quick order on 25mm Celotex Board, ordered on Friday arrived today (Monday)

  10. Nathan

    Very reliable service

  11. lindy

    I must say the service I received was brilliant and I will be continuing to use trade insulations 🙂

  12. Nate Collins

    If anyone is struggling to get insulation defo worth giving these guys a ring and finding out when they can get it – got mine in 4 days!

  13. mary hills

    good product

  14. Ahsian

    really good

  15. Bobbie Norsin

    Always a handy product to have and super easy to work with.

  16. Tommy Harris

    wanted 20mm but could only get 25mm worked out perfect for my project, thank you

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Please login to post questions

Question:

can I use 25mm for underfloor heating?

insulationadmin
08-Feb-2023

Answer:

Yes, however the 25mm Celotex Insualtion board will be used for thermal bridging around the edges if being poured with a liquid screed (or other screed types) not necessarily the overlay board for the screed. That being said, underfloor heating tends to be a thicker size and is usually between 50mm - 100mm depending on specification.

Question:

Can this be used for external walls?

insulationadmin
08-Feb-2023

Answer:

No, the TB4025 or 25mm Celotex Insulation board as its most commonly known, cannot be used on external walls. Especially with recent changes to regulations regarding only non-combustible insulation or insulation of limited combustibility can be used in buildings of over 18 meters (England and Wales) and 11 meters high in Scotland.

Celotex is a leading manufacturer of insulation products. Celotex is a part of the Saint-Gobain Insulation UK group and has been innovating the insulation market since 1925. Celotex provides a large range of insulation solutions from plasterboard to PIR insulation boards.They provide a variety of solutions for different market sectors and also applications.Saint-Gobain believes in creating great living places and improving daily life. They have good technical support and are a trusted name in the business.At Trade Insulations, we offer the best prices on Celotex board.

Celotex TB4000 Datasheet
BBA Certfication - Timber Frame
BBA Certfication - Floors
BBA Certfication - Pitched Roofs
BBA Certfication - Dry Lining

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