Celotex PIR Insulation Board | 2400mm x 1200mm | (All Sizes)

CelotexSKU: IUK00001
20 reviews

Sale price£14.40 

inc VAT

Pay in 3 prices shown are an example only. Total calculated at checkout.

Delivery within 3 - 5 working days

Free Delivery On Orders
Over £499.95 Ex-Vat

Need something quicker?

Contact us on 0300 303 4578
or email here!

Celotex PIR Insulation boards are a multi purpose insulation board, with high performing energy efficiency and thermal conductivity.

Celotex PIR Insulation is an easy-to-install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing.

Celotex insulation boards come in a range of thicknesses from 20mm to 200mm, it can be considered for floor, wall, and roof applications.


  • Ground Floor - Concrete Slab (perimeter upstand)

  • Ground Floor - Beam and Block (perimeter upstand)

  • Ground Floor - Suspended Timber Joists (perimeter upstand)

  • Ground Floor - Upgrading Existing Concrete Slab (perimeter upstand)

  • External Wall - Timber Frame Internal Linings

  • External Wall - Masonry Cavity Internal Linings

  • External Wall - Solid Masonry Internal Linings

  • Pitched Roof - Below Timber Rafters

  • Pitched Roof - Above Timber Rafters

  • Flat Roof - Below Timber Joists

  • Flat Roof - Balconies and Terraces

Product Features 

  • Lightweight 2400 x 1200mm boards

  • Low emissivity foil facing

  • Achieves a BRE Green Guide A rating.

  • BBA certified – certificates 16/5352 (Timber Frame Dwellings),

                                                  17/5405 (Pitched Roof, Dry Lining, Floor Insulation)

Product Properties

  • Board dimensions: 2400mm x 1200mm

  • Thicknesses: 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 200mm.

  • Material: PIR

  • Coverage : 2.88 Sqm ( per board )

Product Features

  • Lambda: 0.022 W/m.K

  • Reaction to Fire: 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.

Product Benefits

  • Excellent thermal performance with a thermal conductivity of 0.022 W/m.K, reducing the thickness of insulation required to hit the target U-value.

  • Low emissivity foil facing provides improved thermal performance in sealed cavity air spaces, improving the achievable U-value.

  • Easy to install – Celotex boards are light and rigid assisting with ease of transportation, handling, and fitting.

  • BBA certified - Celotex PIR has been assessed by the BBA as fit for use in defined roof, wall, and floor applications if installed, used, and maintained as set out in the certificate.  

Key Considerations

When using Celotex insulation boards you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national, and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions.

Data Sheets


Other PIR Insulation brands are:-


Dont forget we stock a wide selection of insulation products, 
If you can`t find what you need or need more information drop us an email or Call Us.


Need bespoke cutting of PIR boards? See our cutting service HERE

Please Note We Reserve the Right to Supply Alternative Brands to the Same Specification During Periods of High Demand

Order Value Delivery Charge
Up to £200.00 ex-vat £75.00 ex-vat
£200.00 - £499.95 ex-vat £55.00 ex-vat
Above £499.95 ex-vat Free Delivery


Weekend Delivery
Available upon request


Parcel Rates
Delivery charge may vary depending on quantity and volume of your order.
Pricing will be calculated during checkout.


Local Delivery Charge
Within 35 miles of Postcode S63 9BL - Up to £500.00 ex-vat
Delivery Charge £35.00 ex-vat
Please contact us to arrange collections
Tel: 0300 303 4578 | Email:


Delivery charges will automatically be calculated within the checkout process.
Orders are only processed for delivery between 8.00am - 5.00pm Monday to Friday excluding bank holidays.
Moffett offload will be used for large bulky deliveries and only when agreed with you.
Please advise of any access issues on ordering.
Delivery is Kerbside only.
In the unlikely event that your delivery is not correct or damaged please notify us immediately and mark any issues on the delivery slip.


    Where We Deliver

    Delivery Areas

    We have a fleet of FORS delivery vehicles all with Moffett mechanical off loads that deliver nationwide. Sometimes we may use 3rd party carriers for smaller orders.


      Product Delivery Times

      The vast majority of our orders are dispatched within 3 working days, this can however be up to 5 working days, please contact us if you require something urgent.
      Speciality items may take up to 5-7 working days.
      We will contact you with in 24/48hrs of your order been placed to confirm delivery times and dates.

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