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Celotex XR4150 General Purpose PIR Insulation Board - 2400 X 1200 X 150mm

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£82.49 Incl. VAT
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Are you looking for a highly versatile multi-purpose insulation board? Celotex XR4150 is ideal for various applications including pitched roofs, flat roofs, solid floors and masonry walls and timber framed and steel framed systems. It's produced from polyisocyanurate (PIR) and easy to handle, cut and shape. You can fit it between rafters and joists to provide a highly insulating layer of insulation even though it's not too thick. These insulation boards benefit excellent thermal performance and have impressive thermal conductivity of 0.022 W/m.K. So, you won't be surprised to learn that it can easily deliver the required U-value.

To make matters even better, the low emissivity foil facing boosts thermal performance in sealed cavity air spaces, improving the potential U-value. These PIR insulation boards are designed to Quality Management Standard ISO 9001:2015 and also come with BBA (British Board of Agrement) certificate for extra peace of mind. Additionally, the XR150 has a BRE (Building Research Establishment) Green Guide Rating of A, which will help improve your environmental performance. At the end of the day, this sturdy PIR insulation board will provide you with consistent long-term energy savings.

Features & Benefits: Celotex XR4150 General Purpose PIR Insulation Board - 2400 X 1200 X 150mm

  • High-quality energy-saving PIR insulation board
  • High thermal performance
  • Quick & easy to install
  • Can be used in roof, wall and floor applications
  • Low emissivity foil facings for improved thermal insulation performance in cavity air spaces
  • BBA certified
  • BRE Green Guide Rating of A

Product Specification

  • Length: 2400mm
  • Width: 1200mm
  • Thickness: 150mm
  • Coverage: 2.88m2
  • R-Value: 6.80m2K/W
  • Maximum weight: 6.10kg/m2
  • Thermal conductivity: 0.022W/m.K, according to BS EN 13165 for factory made rigid polyurethane foam (PU) product
  • Compressive strength (kPa): CS(10\Y)140
  • Spread of flame: Euroclass E Reaction to Fire classification, according to BS EN 13501-1. Products with this level of classification are not provided with a rating for smoke emission.


Length 2400mm Thickness 150mm Width 1200mm


Thermal Conductivity 0.022 W/mK Edging Square Edge Facing Foil Product Type Board
Material PIR

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5 / 5 4 reviews
James Easey
17th August 2021
No damage on any boards. 👍
Sean M
6th September 2020
Delivered quickly, followed the instructions of where to drop it as well.
Vincent Brooks
13th August 2020
excellent product and service will use again without hesitation
Peter G
12th November 2019
As specified and in good condition
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Celotex XR4150 General Purpose PIR Insulation Board - 2400 X 1200 X 150mm

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