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1 Review
View Product Reviews25mm Kingspan Kooltherm K103 Floor Insulation Board 2400mm x 1200mm
| 24+ boards | 36+ boards | 48+ boards |
| £37.10ex. VAT | £36.92ex. VAT | £36.73ex. VAT |
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Mon 11 Aug
- 2days
- 19hrs
- 33mins
- 13secs
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- Choose Clearpay at checkout to pay later with Pay in 4.
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Clearpay is unregulated credit. Use responsibly. 18+, T&Cs and late fees apply at clearpay.co.uk/en-GB
Clearpay lends you a fixed amount of credit so you can pay for your purchase over 4 instalments, due every 2 weeks. Ensure you can make repayments on time. You must be 18+ and a permanent UK resident (excl Channel Islands). Clearpay charges a £6 late fee for each late instalment and a further £6 if it’s still unpaid 7 days later. Late fees are capped at £6 for orders under £24 and the lower of £24 or 25% of the order value for orders over £24. Missed payments may affect your ability to use Clearpay in the future and your details may be passed onto a debt collection agency working on Clearpay’s behalf. Clearpay is credit that is not regulated by the Financial Conduct Authority. T&Cs and other eligibility criteria apply at clearpay.co.uk/terms
Product Overview
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, KW, IV, LA, LD, LL, NP, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £150 | £40 ex. VAT |
| Between £150 - £350 ex. VAT | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £15 ex. VAT |
| Between £100 - £200 ex. VAT | £10 ex. VAT |
| Over £200 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £7.50 ex. VAT |
| Over £100 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{download}} For use in beam & block, concrete & timber floors
- {{device_thermostat}} Fibre-free rigid thermoset phenolic core
- {{add_task}} Low thermal conductivity of 0.019 W/mK
- {{balance}} Lightweight yet rigid
Technical Specification
| Product: | K103 |
|---|---|
| Material Type: | Phenolic |
| Thickness: | 25mm |
| Width: | 1200mm |
| Length: | 2400mm |
| Pieces Per Pack: | 12 |
| Sales Unit: | Board |
| Sales Unit Coverage: | 2.88m2 |
| Brand: | Kingspan |
| Weight: | 2.91kg |
| Thermal Conductivity: | 0.018W/mK |
| Facing: | Glass Tissue |
| Application: | Insulation for Floors |
| Status: | Non-Returnable |
Technical Downloads
What Is 25mm Kingspan Kooltherm K103 Floorboard?
25mm Kingspan Kooltherm K103 Floorboard is a premium performance insulation solution designed for use in a range of floor build-ups, including beam and block concrete floors, timber floors, and those requiring screed.
Across every thickness, the board maintains a thermal conductivity of 0.019 W/mK. It has a rigid phenolic core, and each face is covered with glass tissue that’s bonded directly during manufacturing.
Each board measures 2400mm x 1200mm, offering 2.88m² of coverage per sheet and allowing efficient installation over larger areas.
The boards are lightweight and rigid, which makes them easy to handle and install compared to some other commonly used insulants.
Their 120 kPa compressive strength means they perform well even under pressure from flooring systems.
Applications
Kingspan Kooltherm K103 is intended for use in floor insulation applications. It is suitable for:
- Beam and block concrete floors
- Solid concrete floor slabs
- Timber floor constructions
- Floors requiring a screed finish
Installation Guidance
These boards are typically installed beneath screeds or floor finishes. In suspended timber floors, the boards can be placed between joists.
Check that the floor beneath is level and free from any obvious issues before fitting the boards.
You might need to use insulation fixings in certain cases, but in many situations, they’re not required. If there’s any doubt, it’s wise to get some professional advice before going ahead.
Certifications and Standards
Kingspan Kooltherm K103 Floorboard is manufactured under systems certified to the following standards:
- ISO 9001:2015 - Quality Management
- ISO 14001:2015 - Environmental Management
- ISO 45001:2018 - Occupational Health & Safety
- ISO 50001:2018 - Energy Management
How well the boards perform depends largely on how they’re installed and the condition of the floor or base underneath. They’re built to resist water vapour and air movement and should last a long time under typical use.
Customer Reviews
Best premium performance floor insulation on the market! Really impressed that the customer service team were able to better their web delivery date when I called into the office.
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