Celotex Isover

Celotex PL4000

Celotex PL4000 is a high performance, easy to install polyisocyanurate (PIR) insulation board with a paper facing, laminated to a piece of 12.5mm tapered edge plasterboard. Available in thicknesses from 25mm to 65mm (insulation only), it is suitable for use in roof and internal wall lining applications

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Suitable Applications

  • External walls – internal lining
  • Pitched roofs – underneath the rafters
  • Flat roofs – underneath the joists

Product Features

  • Standard 1200 x 2400mm boards
  • Paper facing
  • Achieves a BRE Green Guide A+ rating
  • BBA approved – certificate 16/5357

Product Properties

  • Board / Roll size: Width 1200mm, Length 2400mm
  • Thickness : 25-65mm (+12.5mm Plasterboard)
  • Material: PIR

Product Performance

  • Lambda: 0.022 W/m.K
  • Reaction to Fire: Euroclass B-s1, d0 Reaction to Fire classification, according to EN 13501-1

Product benefits

  • Excellent thermal conductivity - decreasing the thickness of insulation required to hit the required U-value, optimising space in the construction design and helping to reduce the heating and cooling costs within the building
  • Easy to install – lightweight boards are straightforward to handle, fit and transport
  • BBA certification - third-party verification that the product has been assessed for its defined applications and is compliant with the relevant Building Regulations.
  • Time saving – 2-in-1 solution to insulate and dry line walls or roofs at the same time