Celotex PL4050 62.5mm (50+12.5mm), 18 x 1.2×2.4m = 51.84m²


High performance rigid Polyisocyanurate (PIR) insulated plasterboard

Can be easily used to help upgrade to current building regulation standards in pitched roof, flat roof and wall applications.

Ideal option for internal solid wall insulation.

Suitable for both direct bonding ('dot and dab') and mechanically fixed installation.

Featuring an inbuilt vapour control layer.

Ideal for new build, retrofit, and refurbishment.

Thicknesses and Availability:

All thicknesses are available from the manufacturer; short lead-times may apply as we may need to get the products in from Celotex before delivering to site.

This PL4000 Range includes the following available product thicknesses: 37.5mm, 52.5mm, 62.5mm, 72.5mm and 77.5mm.

Generally sold in pallet quantities only, however, we will happily check to see if individual depots will split pallets, depending on you requirements.

Additional information


1 to 5 working days

Product ex-VAT inc-VAT  
Celotex PL4050 62.5mm (50+12.5mm), 18 x 1.2×2.4m = 51.84m² £872.29 £1,046.75

Availability Indicators

Celotex PL4000 is sent out from depots nationwide and is subject to the Local Depot Delivery minimum order levels and delivery charge thresholds.

Reasonable stock levels are generally held at most of our depots. In some geographic locations, depots may stock alternates, however, we will contact you to discuss before proceeding with the order.

Where products need to be brought in from Celotex, please allow approx. 1 week for delivery.

While the items are priced per pallet, in some cases we can split the pallets and supply individual boards … please contact me to discuss your requirements so I can check with the relevant depot about options of splitting the pallet.

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations.

  • Generally 1 to 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Delivery charges will be calculated at check-out. Please visit our Ordering From Us page for further details on minimum order levels and delivery charges. If you have any queries, please do not hesitate to contact me via our Contact Form or on 01903 899 898.

Product Application

Dry-lining thermal laminate board

Celotexs high performance polyisocyanurate (PIR) foam board, PL4000, is suitable for use in dry lining applications as well as the underneath layer in pitched and flat roofs.

Product Make-up

Core: Celotex PL4000 is manufactured from rigid polyisocyanurate (PIR) using a blowing agent that has zero ozone depletion potential (zero ODP) and low global warming potential (GWP).

Facings: Faced with a 12.5mm tapered edge gypsum based plasterboard on the front facing while the hidden face is aluminium foil/kraft paper facing, autohesively bonded to the insulation core during manufacture.

Product Performance

Thermal Conductivity 0.022 W/mK  
Vapour Resistance > 50 MNs/gm