Menu
Menu
Your Cart
Cart0 item(s) - £0.00 0

  • Your shopping cart is empty!

Call Back
Contact
Insulated Render Systems

120mm Celotex XR4000 PIR Insulation Board - XR4120

120mm Celotex XR4000 PIR Insulation Board - XR4120
Guide Price
Rate this product
120mm Celotex XR4000 PIR Insulation Board - XR4120
Guide Price: £41.16 (£49.39 inc VAT)
Price per m2: £14.29/m2 (£17.15 inc VAT)
  • Product Code: A1-125
  • Delivery Time: 1-3 working days
  • Brand: Celotex
    • (Tech. support: 01473820850)
  • Model: 2400x1200mm - 2.88m2
  • Weight: 11.23kg
Our ratings on 22-05-2026:
Google My Business Reviews
4.8 out of 5
Get Best Price
Ask question about this product. For price use 'Add to Quote' button.
Add to Quote
Compare
Show other thicknesses

120mm Celotex XR4000 PIR Insulation Board - XR4120

Width: 1200mm
Length: 2400mm
Density: 32.5kg/m3
Weight/m2: 3.9kg
Weight: 11.23kg
Thermal Conductivity: 0.022W/mK
R-Value: 5.45m2K/W
Compressive Strength: 140kPa
Surface Spread of Flame: Class 1

Celotex XR4120 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. XR4120 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4120 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).

APPLICATIONS
  • Pitched Roofs
  • Flat Roofs
  • Solid Masonry Walls
  • Timber Framed & Steel Framed Systems
  • Floors
CHARACTERISTICS
  • Is suitable for use in a number of applications including roof, wall and floor systems,
  • Provides the thickest PIR insulation available from stock within the market,
  • Is certified under BBA certificate numbers 95/3197 and 09/4667,
  • Helps meet the current and future requirements of Approved Document L and Section 6, BREEAM and The Code for Sustainable Homes,
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces, Provides reliable long-term energy savings for buildings
CERTIFICATES
  • Celotex XR4120 is CFC/HCFC free
  • Has zero ODP and low GWP and CE marking compliance to BS EN 13165.
  • Celotex XR4120 is manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001.
  • Celotex XR4120 achieves an A+ rating when compared to the BRE Green Guide 2008. All products must be installed in accordance with instructions issued by Celotex.

 

140mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 4)
Guide Price
Brand: Celotex Model: 1190x450mm - 2.16m2
Delivery Time: up to 7 days
140mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 4)
140mm 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: £124.04
£148.85 inc VAT
Get Best Price
Add to Quote Compare this Product
40mm Celotex CW4040 - Rigid PIR Cavity Insulation Board (pack of 14) CW4000
Guide Price
Brand: Celotex Model: 1200mm x 450mm - 7.56m2
Delivery Time: 1 - 5 working days
40mm Celotex CW4040 - Rigid PIR Cavity Insulation Board (pack of 14) CW4000
40mm 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: £77.58
£93.10 inc VAT
Get Best Price
Add to Quote Compare this Product
60mm Celotex CW4060 - Rigid PIR Cavity Insulation Board (pack of 10) CW4000
Guide Price
Brand: Celotex Model: 1200mm x 450mm - 4.32m2
Delivery Time: 1 - 5 working days
60mm Celotex CW4060 - Rigid PIR Cavity Insulation Board (pack of 10) CW4000
60mm 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 rigi..
Guide Price: £75.67
£90.80 inc VAT
Get Best Price
Add to Quote Compare this Product
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 rig..
Guide Price: £68.22
£81.86 inc VAT
Get Best Price
Add to Quote Compare this Product
90mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 5)
Brand: Celotex Model: 1200mm x 450mm - 2.70m2
Delivery Time: 1 - 5 working days
90mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 5)
90mm 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 rigi..
Get Best Price
Add to Quote Compare this Product
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 rigi..
Guide Price: £72.03
£86.44 inc VAT
Get Best Price
Add to Quote Compare this Product

Rate this product

Please login or register to review
This product is listed in the following categories and systems (click to show).