Celotex GA4090 Insulation Board 90mm x 1200mm x 2400mm

£34.00 £28.33
In stock
Product Description

Celotex GA4090 90mm is a multi-purpose insulation board with fire performance, saving you on your energy bills. It is manufactured from a high-performance polyisocyanurate (PIR) thermal insulation board with two low-emissivity foil facings to enhance its U-value. This product has been designed for roof, wall, and floor applications.

Size: 90mm x 1200mm x2400mm

Other available thicknesses: 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 100mm, 120mm & 150mm



We are happy to help with enquiries, stock availability or any technical help you require, however for security reasons we cannot take orders over the phone. So if you need to chat give us a call on 03301231761 or email us at [email protected].

What is Celotex GA4090 Insulation Board 90mm? 
Celotex GA4090 90mm insulation board is a high-quality insulation solution which reduces energy needs by protecting your thermal environment. Manufactured from tough PIR, this product works to eliminate thermal bridges in walls throughout the lifespan of your building. It has an impressive thermal conductivity of 0.022 W/mK as well as water vapour resistance.

Celotex is a reputable brand with versatile and reliable products which last for long periods of time. GA4090 90mm insulation boards are produced using a blowing agent that has zero ozone depletion potential (ODP) and low global warming potential (GWP) – perfect for eco-conscious buyers.

Features and benefits of Celotex GA4090 Insulation Board 90mm: 

  • 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 – 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.
  • Achieves a BRE Green Guide Rating of A, which can assist in demonstrating environmental performance in your BREEAM assessments.
  • Lightweight 2400 x 1200mm boards.
  • Low emissivity foil facing.

Applications for Celotex GA4090 Insulation Board 90mm: 

  • Ground Floor - Concrete Slab
  • Ground Floor - Suspended Timber Joist
  • Ground Floor - Beam and Block
  • Ground Floor - Upgrading Existing Concrete Slab
    External Wall - Timber Frame Internal Linings
  • External Wall - Timber Frame Sheathing
  • External Wall - Between Timber Frame Studs
  • External Wall - Solid Masonry Internal Linings
  • Pitched Roof - Over Timber Rafters
  • Pitched Roof - Sarking
  • Pitched Roof - Below Timber Rafters
  • Pitched Roof - Between Timber Rafters
  • Pitched Roof - Loft insulation - Between and Over Timber Joists
  • Flat Roof - Balconies & Terraces Over Joists
  • Flat Roof - Between Timber Joists
  • Flat Roof - Below Timber Joists

Read more about applications of Celotex insulation boards

Data Sheet (213.70 kB)
Customer Questions
I have 90mm Celotex boards. Would it be suitable to be stored in my garage for a couple of months?
PIR insulation boards need to be stored flat in a dry place and clear of the ground. Storing in your garage will be fine as long as it is dry and you can keep them off the floor.
Why does the U-value matter?
A U-value is how much heat transfers/ is lost through a material/installation. The U-Value is measured in W/m² K and it is important that this number is as low as possible. The less heat that can travel through, the better the thermal performance will be. You can find out the U-value by visiting the Celotex website directly at www.insulation-uk.com or calling their technical line on 01473 820850.
Did you find what you were looking for?
More Information
Supplier Part NumberGA4090
Size1200mm x 2400mm

Orders and Delivery

Free delivery if your order is over £300 ex VAT. Orders between £100 - £300 ex VAT will be subject to a delivery charge of £50 ex VAT. Please note, we are unable to accept orders less than £100 ex VAT

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

• Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

• Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

• The delivery driver will require a signature to confirm the goods have been received.

 † Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.


Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item.

Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged.

We usually charge 30% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

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