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80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R

80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
  • 80mm Unilin PIR Polyisocyanurate Rigid Foam Insulation Board
  • Declared Lambda value of 0.022 W/mK (Thermal Conductivity)
  • 80mm x 1200mm x 2400mm Foil Faced PIR Insulation Sheet
  • Reducing heat loss and saving money on future energy bills
  • Unilin Insulation Thin-R XT/UF Floor (Underfloor) Insulation Board
Estimated delivery:
In Stock
£ 57.78
Ex VAT: £ 48.15

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80mm Unilin XT/UF Thin-R Floor PIR Rigid Foam Insulation Board is an insulation sheet suitable for ground supported floor slab for both new build and refurbishment projects.

XT/UF Underfloor Unilin PIR Board is a high performance insulation with a certified thermal conductivity of 0.022W/mK which helps to reduce thermal stress and condensation risk.

Unilin’s Flooring Systems XT/UF bring floor insulation performance to new levels, surpassing the default values asked for in current building regulations.

The floor in any building is an area of considerable downward heat loss when not properly insulated.

Unilin Thin-R XT/UF Underfloor will significantly improve the U-Value of new and existing floors.

Unilin XT/UF can help you achieve U-Values as low as 0.14 W/m2K within a floor construction.




Thickness: 80mm

Size: 1200mm x 2400mm

Length: 2400mm

Width: 1200mm

Board coverage: 2.88m2

Density (Foam Core): 30-32 Kg/m3

Weight: approx. 6.94kg

Thermal Conductivity: 0.022 W/mk

R-Value: 3.64m2K/W

Compressive Strength: >150 kPa

Water Vapour Resistivity: >100 MNs/gm

Surface spread of flame: Class 1

Reaction to fire: E


Unilin XT/UF Thin-R Floor Insulation Board Features:

 · Rapid build system.

 · Suitable for newbuild and renovation.

 · Reduced insulation thickness.

 · Low emissivity foil facings.

 · Certified thermal conductivity of 0.022 W/mK.

 · High compressive strength.

 · Lightweight and easy to install.


Thin-R XT/UF Unilin Floor Insulation handling, cutting and storage:

 · Unilin insulation should be stored off the ground, on a clean, flat surface and must be stored under cover.

 · The polythene wrapping is not considered adequate protection for outside exposure.

 · Care should be taken to protect the insulation in storage and during the build process.

 · The insulation boards can be readily cut using a sharp knife or fine toothed saw.

 · Ensure tight fitting of the insulation boards to achieve continuity of insulation as asked for within the ACDs.

 · Appropriate PPE should be worn when handling insulation.



· BBA Certification No. 08/4613. Issue date: 5 August 2011.

· BS EN ISO 9001 Quality Management System.

· BS EN ISO 14001 Environmental Management System.


*Further information may be found in our Downloads section.

Fairly easy to access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet

Board covarage 2.88 m2
Compressive Strength 150 kPa
Density 30-32 Kg/m3
Length 2400mm
Material Polyisocyanurate Rigid Foam
Profile Straight Edge
R-Value 3.64m2K/W
Size 80mm x 1200mm x 2400mm
Surface spread of flame Class 1
Thermal Conductivity 0.022 W/mk
Thickness 80mm
Water Vapour Resistivity 100 MNs/gm
Width 1200mm
Fire Classification Class E
Vapour Resistivity 100 MNs/gm
Finish Composite Foil Facings
Shipping method Articulated Vehicle ǀ Courier
Grade Thin-R XT/PR_UF (FLOORS)
Applications Roof ǀ Wall ǀ Floor ǀ Timber & Steel Frame
BBA Certified Yes (no. 08/4613)
Foil faced Both sides (aluminium)
ETA Notification Yes
Features High Performance Floor Insulation Board
Manufacturer Unilin Insulation®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
80mm Underfloor PIR Insulation Board Unilin XT/UF Thin-R
£ 57.78