Please note a likely lead time of 5-7 days as ordered in from the manufacturer to supply. Please enquire to check stock or for further details.

Kingspan Kooltherm K103 Floor Insulation

As low as
From  £264.48  inc VAT
From  £220.40  ex VAT
In stock
Kingspan Kooltherm K103 Floor Insulation Board
As low as
From  £264.48  inc VAT
From  £220.40  ex VAT
Product Description

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

size: 1200mm X 2400mm

Need to discusss your enquiry further? Please contact our customer services team at [email protected], who will be happy to help.

array(1) { [0]=> string(127) "" }

Click here for data sheet

Kooltherm Kooltherm K103 is a premium performance floor insulation board, with a lower lambda value and a fibre-free rigid thermoset phenolic core.


  • Premium performance rigid thermoset insulation – Thermal conductivities as low as 0.018 W/m.K
  • Negligible smoke obscuration.
  • Class O / low risk fire rating.
  • No requirement for a vapour control layer.
  • Quick response floor heating – prevents heat loss through ‘heat sump’.
  • Minimises the cost of related items – soil removal, DPMs, service connections.
  • Front Face of board is Foil Faced.
  • Reverse Face of the board is Glass Tissue
  • Core -  Premium performance lower-lambda rigid thermoset phenolic insulation manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).


  • Below Concrete screeds
  • Below Concrete slabs depending on make up of the floor


Orders and Delivery

Orders and Delivery

Free delivery if your order is over £300 Inc VAT. Orders under £300 are subject to a £30.00 Inc VAT delivery charge.

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

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 25% 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.

Free delivery on orders over £300! Free delivery on orders over £300 Terms and Conditions apply

Roof Stores

For all your roofing needs

Shop now >

Power Tools 2 U

Buy Power tools online

Shop now >