Kingspan Kooltherm K103 Floor Insulation Board 100mm x 1200mm x 2400mm 8.64m2

£356.04 £296.70
In stock
Product Description

We are only able to supply in the stated pack quantity.

This premium performance rigid thermoset phenolic insulation board is manufactured to the highest standard and is easy to handle and install. Ideal for new builds and renovations, this is a brilliant energy-efficient solution.

Size: 1200mm x 2400mm

Pack: 3 boards

Other available thicknesses: 25mm, 50mm, 70mm & 75mm

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 Kingspan K103 100mm insulation? 

Kingspan K103 100mm floor insulation boards are a sustainable and energy-efficient method of reducing heat loss. The boards are made of non-deleterious material and are lightweight and durable, meaning they have a lifespan that is indefinite when installed correctly. 


When it comes to floor installation, these Kinsgpan boards are easy to transport, handle and fit. Used across solid concrete and timber floor applications, the boards are also resistant to water vapour so offer a number of benefits. 

Features and benefits of Kingspan K103 100mm: 

  • Used to insulate concrete, timber, beam and block floors. 
  • Also can be used for underfloor heating systems. 
  • Boards have a rigid thermoset phenolic core that is free from fibres, with glass facing. 
  • Unaffected by air infiltration. 
  • Resistant to solvents, fungi and rodents.
  • Compressive strength of 120 kPa.
  • Weight: Approx 3.70 kg/m2 at a thickness of 100 mm. 

Applications for Kingspan K103 100mm: 

  • Beam and dense block floors
  • Suspended timber floor
  • Solid concrete floor
  • Underfloor heating systems 

If you are interested in using the Kingspan brand, you can find out even more information about one of the market leaders and the differences between Kingspan and Celotex

Product Brochure (3.87 MB)
Customer Questions
What is the pack size for the 100mm Kingspan K103 flooring boards?
Kingspan K103 Floor Insulation Boards in 100mm are 1200mm x 2400mm and come in packs of 3, which gives a total area of 8.64m2.
What fire rating does Kingspan K103 have?
The Kooltherm K103 achieves Euroclass C-s2,d0 when classified to EN 13501-1: 2018. We advise contacting the Kingspan Insulation Technical Service (t[email protected]) if you need more information.
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More Information
Supplier Part NumberK103
Pack Size3
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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