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PIR Sheet - EcoTherm/Celotex - 1200x2400

PIR Sheet - EcoTherm/Celotex - 1200x2400

  • Pitched Roof Insulation
  • Celotex

  • Free Next Day Delivery (over £500) in the West Midlands
  • Free Standard Delivery (over £500)
  • View our guides for Help & Advice
 (   Ex. VAT) £15.00
 - £1,422.00
All prices are including VAT

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🚛 Next Day Delivery (West Midlands) – FREE on orders over £500

Polyisocyanurate – also known as PIR – insulation boards are used for full fill cavity wall applications. The boards offer maximum thermal performance (0.021 W/m.K) with their engineered tongue and groove joint profile, features which also provide protection from wind-driven rain. PIR boards can be installed with up to a 10mm residual cavity or as a full fill solution with little to no residual cavity.  


  • Can be used for floor or pitched roof insulation 
  • High thermal performance 
  • Lightweight and easy to install 
  • Low emissivity foil facings  
  • BBA certified  

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Frequently Asked Questions

Our PIR Sheet - EcoTherm/Celotex is typically made of high-quality Polyisocyanurate (PIR) foam insulation material. PIR insulation is known for its excellent thermal resistance properties and durability.

Yes, this PIR Sheet can be used for floor insulation applications. It provides effective thermal insulation when installed between floor joists or beneath flooring materials, helping to improve energy efficiency and maintain comfortable indoor temperatures. If you’re looking for cheap Celotex PIR sheets, look no further than Insulation King. We’re proud to offer the UK’s cheapest online price!

When properly installed and maintained, Insulation King'scheap PIR insulationcan have a long service life. Its durability allows it to provide reliable thermal insulation for many years, contributing to energy savings and comfort in your building.

Although moisture-resistant to some extent, this PIR sheet is not waterproof. While it can withstand occasional exposure to moisture, it's not designed for continuous immersion in water or exposure to high humidity levels. For areas prone to moisture, check out our KNAUF Moisture Panel.

Free shipping will automatically be applied to all orders over £500. Simply add over £500 to your cart and you will see the discount while checking out.

Orders under £500 - £50 charge.
Over £500 is free.

We typically deliver orders within 2-3 business days of ordering.

Orders for the West Midlands will be completed in 1 to 2 working days.

Orders for areas out of the West Midlands will be completed in 3 to 4 working days.

Orders made after 5pm will be processed on the following working day.

Our deliveries are typically made between 8am and 5pm, Monday - Friday excluding Bank Holidays (Great Britain).

We are unable to offer timed deliveries.

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