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Celotex 62.5mm Insulated Plasterboard PL4050 1.2m x 2.4m

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£83.20 Incl. VAT
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PL4000 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.

This high performance board allows for the installation of both the insulation and plasterboard in one operation, thereby reducing installation time.


Length: 2400mm.
Width: 1200mm.
Thickness: 62.5mm insulation.
Plasterboard: 12.5mm thickness.

With Celotex PL4000 you are specifying an insulation board that:

  • Offers the user the ability to install both the insulation and plasterboard in one operation, thus reducing installation times.
  • Is suitable for both direct bonding ('dot and dab') and mechanically fixed installation techniques.
  • Offers the installer maximum flexibility and installation speed due to the tapered edge plasterboard.
  • Provides reliable long-term energy savings for buildings.
  • Is suitable for both new build and refurbishment projects.
  • Can be easily used to upgrade to current building regulation standards.
  • Can be used in pitched roof, flat roof and wall applications.


Celotex PL4000 is purpose designed for providing thermal insulation and plasterboard as one product. PL4000 can be specified for use in a variety of applications including:

  • The 'underneath' layer of insulation in between and under rafter and joist applications.
  • Solid masonry walls.
  • Timber frame lining applications.


Length 2400mm Thickness 62.5mm Width 1200mm


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Questions & Answers


Can this be used on top of current plaster within a room with solid walls?


Insulated plasterboards can be bonded over existing plaster using acrylic sealant adhesive or low expanding PU foam adhesive so long as the plaster is sound, solid and dry.


What is the R value?


R value = 2.30m2K/W



Hi, I have 2 questions, can this product be cut to size, and also is it possible to order a sample? Thanks


You can cut this to size yourself, as this is not a service that is available from our suppliers, and unfortuantely for this product in particular, samples are not available

Have a question about this product?


5 / 5 5 reviews
Arthur Davies
31st October 2021
Great boards, already installed and we can feel the difference.
Philip Brocklesby
11th August 2021
great service
Mark Fordyce
20th November 2020
Excellent product which did the job perfectly.
Richard Fremantle
19th October 2020
Brings a solid wall up to so close to current building regulations that you are unlikely to notice the difference. Shame that The Insulation Superstore delivered a different make of board.
Nathan Noall
5th October 2020
Great product for insulating a home office in an outhouse. Very good insulation and needs minimal heating due to this product. Very easy to work with and insulation superstore have been brilliant getting this to me at short notice when another supplier let me down. Great product, service and comes. Top marks all round.
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Celotex 62.5mm Insulated Plasterboard PL4050 1.2m x 2.4m

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