25mm Celotex TB4000 PIR Insulation Board - TB4025

25mm Celotex TB4000 PIR Insulation Board - TB4025
Guide Price
Rate this product
25mm Celotex TB4000 PIR Insulation Board - TB4025
Guide Price: £19.33 (£23.20 inc VAT)
Price per m2: £6.71/m2 (£8.05 inc VAT)
  • Product Code: A1-112
  • Delivery Time: 1-3 working days
    • If you need less than minimum order quantity please contact us.
  • Brand: Celotex (Tech. support: 01473820850)
  • Model: 1200x2400mm - 2.88m2
  • Weight: 3.02kg
Our ratings on 11-11-2026:
Google My Business Reviews
4.8 out of 5

25mm Celotex TB4000 PIR Insulation Board - TB4025

Width: 1200mm
Length: 2400mm
Coverage: 2.88m2
Density: 42kg/m3
Weight/m2: 1.05kg
Weight: 3.02kg
Compressive Strength: 120kPa
Thermal Conductivity: 0.023W/mK
R-Value: 1.1m2K/W

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 manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).

Note:

  • Would also be known as TB3025

APPLICATIONS

  • Pitched Roofs
  • Flat Roofs
  • Solid Masonry Walls
  • Timber Framed & Steel Framed Systems
  • Floors
CHARACTERISTICS
  • Specifically designed to eliminate thermal bridges
  • The thinnest PIR insulation
  • Standard board size of 1200mm x 2400mm
  • Easy to cut and shape
  • Low emissivity foil facings giving improved thermal insulation
  • High performance within cavity air spaces
  • Long-term energy savings for buildings
CERTIFICATION
  • CE marking compliance to BS EN 13165
  • Manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001
  • Achieves an A+ rating when compared to the BRE Green Guide 2008
100mm Celotex CW4100 - Rigid PIR Cavity Insulation Board (pack of 6) CW4000
Guide Price
Brand: Celotex Model: 1200mm x 450mm - 3.24m2
Delivery Time: 2 - 3 working days
100mm Celotex CW4100 - Rigid PIR Cavity Insulation Board (pack of 6) CW4000
100mm 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 po..
Guide Price: £68.22
£81.86 inc VAT
115mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 5)
Guide Price
Brand: Celotex Model: 1190x450mm - 2.7m2
Delivery Time: up to 7 days
115mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 5)
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: £128.57
£154.28 inc VAT
50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000
Guide Price
Brand: Celotex Model: 1200mm x 450mm - 5.94m2
Delivery Time: 1 - 5 working days
50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000
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 rigid pol..
Guide Price: £72.03
£86.44 inc VAT
25mm Celotex TB4000 PIR Insulation Board - TB4025
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
25mm Celotex TB4000 PIR Insulation Board - TB4025
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..
Guide Price: £19.33
£23.20 inc VAT
140mm Celotex XR4000 PIR Insulation Board - XR4140
Guide Price
Brand: Celotex Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
140mm Celotex XR4000 PIR Insulation Board - XR4140
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..
Guide Price: £73.15
£87.78 inc VAT
90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)
Guide Price
Brand: Celotex Model: 1190x450mm - 3.24m2
Delivery Time: 2 - 4 days
90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)
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..
Guide Price: £138.02
£165.62 inc VAT
This product is listed in the following categories and systems (click to show).