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View Product Reviews25mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm
| 25+ boards | 50+ boards | 70+ boards |
| £11.29ex. VAT | £11.17ex. VAT | £11.06ex. VAT |
Coverage required
Express Delivery
Tue 20 May
Standard Delivery
Thu 22 May
- 1days
- 4hrs
- 35mins
- 20secs
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Pay in 3 interest-free payments
Split your purchase of £11.40 into 3 with no sign-up fees or late fees.
£3.80
today
£3.80
1 month
£3.80
2 months
How it works
- Choose PayPal at checkout to pay later with Pay in 3.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
Pay in 3 is a form of credit, so carefully consider whether the purchase is affordable and how you will make the repayments. Be aware of the possible impact of using Pay in 3 and of missing payments, including making other borrowing more difficult or more expensive. Pay in 3 eligibility is subject to status and approval. 18+ UK residents only. Available for purchases of £30 to £2,000. Terms and conditions apply. PayPal Pay in 3 is a trading name of PayPal (Europe) S.à r.l. et Cie, S.C.A. 22-24 Boulevard Royal L-2449, Luxembourg.
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Buy now. Pay with Klarna at your own pace.
Get what you need for your next project, choose how you pay.
Pay in 30 days
£11.40
Pay in full
Klarna's Pay in 30 days is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
Pay over time
£3.80
Every 30 days
Pay in 3
£3.80
today
£3.80
in 30 days
£3.80
in 60 days
Klarna's Pay in 3 is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
How it works
- At checkout select Klarna.
- Choose your payment plan.
- Different payment plans may be shown depending on the purchase amount and credit score.
- Complete your checkout.
- The amount will be charged based on the payment plan you chose.
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Pay in 4 interest-free payments
Split your purchase of £11.40 into 4 with no sign-up fees or late fees. Your purchase will be split into 4 payments, payable every 2 weeks
£2.85
today
£2.85
second payment
£2.85
third payment
£2.85
fourth payment
How it works
- Choose Clearpay at checkout to pay later with Pay in 4.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
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
Klarna's Pay in 3 / Pay in 30 days are unregulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Late fees may apply. Ts&Cs apply
Clearpay is unregulated credit. Use responsibly. 18+, T&Cs and late fees apply at clearpay.co.uk/apply
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Delivery & Returns Information
All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.
This charge is based on delivery to mainland UK excluding the following postcodes: AB, CF, DD, DG, KW, IV, LD, LL, NP, PH, SA and SY. If your delivery address is in any of these postcode areas a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.
Standard (Nationwide) Delivery
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Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £25 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £150 | £50 ex. VAT |
| Between £150 - £400 ex. VAT | £35 ex. VAT |
| Over £400 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £25 ex. VAT |
| Between £100 - £250 ex. VAT | £20 ex. VAT |
| Over £250 ex. VAT | FREE |
| SuperFOIL and YBS products | |
| ORDER VALUE | DELIVERY CHARGE |
| Each item | £10 ex. VAT |
| Over £350 ex. VAT of 1 brand | 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
- {{home}} Use in floors, framed walls and pitched roofs
- {{grade}} Aluminium composite facing on both sides
- {{thermostat}} 0.022 W/mK thermal conductivity
- {{build}} Easy to handle and install
- {{public}} Zero Ozone Depletion Potential (ODP)
- {{verified_user}} BBA certified
Technical Specification
| Material Type: | PIR |
|---|---|
| Thickness: | 25mm |
| Width: | 1200mm |
| Length: | 2400mm |
| Sales Unit: | Board |
| Sales Unit Coverage: | 2.88m2 |
| Brand: | Unilin |
| Thermal Conductivity: | 0.022W/mK |
Technical Downloads
What Is Unilin Xtratherm 25mm?
25mm Unilin Xtratherm Thin-R PIR Insulation Board (2400mm x 1200mm) achieves exceptional thermal insulation with minimal thickness. This high-performance, BBA certified rigid insulation board from Unilin Insulation features a polyisocyanurate (PIR) core bonded to low-emissivity foil facings.
With an exceptionally low thermal conductivity of just 0.022 W/mK, it's an ideal solution for roofs, walls, and floors where space is limited but meeting stringent UK energy efficiency standards (Building Regulations Part L) is essential. Each 2.4m x 1.2m board covers 2.88m².
Benefits
- Thermal Efficiency: Thermal conductivity of 0.022 W/mK provides excellent thermal resistance, significantly reducing heat loss and helping lower energy costs.
- Ultra-Thin Solution: At just 25mm thick, this board allows you to achieve impressive insulation levels without sacrificing valuable internal room dimensions or requiring deep construction adjustments.
- Foil Faced for Enhanced Performance: Low emissivity foil facings on both sides reduce radiant heat transfer across adjacent air cavities and contribute to the board's overall thermal performance. When joints are correctly taped, the facing also provides high vapour resistance.
- Multi-Application Versatility: Suitable and BBA certified for a wide range of applications including roofs, walls, floors, timber and steel framed systems.
- Durable & Moisture Resistant: The rigid PIR core resists moisture absorption and will not rot, degrade, or support mould growth, ensuring long-term performance.
- Lightweight & Rigid: Easy to transport, handle, cut, and install by professionals and competent DIYers.
- Environmentally Considered: Manufactured with a blowing agent that has Zero Ozone Depletion Potential (ODP) and a Low Global Warming Potential (GWP).
Applications
Xtratherm Thin-R Rigid Insulation Board is a multi-application product designed for roofs, walls, floors, timber and steel framed systems. These 25mm boards can be cut to fit in between stud work, laid under a screed floor, or installed between rafters in a pitched roof.
Storage, Handling & Cutting
The polythene wrapping in which the boards are supplied is not considered adequate protection for outside exposure.
Care should be taken to protect the insulation in storage and during the build process. To keep them in the best condition, we advise that you store the boards indoors on a level surface and under a protective cover.
The insulation boards can be readily cut using a sharp knife or fine-toothed saw.
