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24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)

24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
  • 24.5mm Unilin XT/TL-MF (Mech Fix) Foil Backed Insulated Plasterboard
  • Provides a gas and vapour tight barrier, reducing the condensation risk
  • Suitable for a variety of wall types for both refurbishment and new build
  • Used for internal walls, sloped roofs and ceiling applications
  • Improves energy efficiency of your home by reducing energy costs
Estimated delivery:
In Stock
£ 63.68
Ex VAT: £ 53.07

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24.5mm Unilin XT/TL-MF (Mech Fix) is a foil backed insulated plasterboard made of 15mm Unilin PIR insulation core bonded to 9.5mm plasterboard used for internal walls, sloped roofs and ceilings.

The composite foil facing on Unilin XT/TL-MF Insulation and Drylining Board provides a gas and vapour tight barrier, reducing the condensation risk.

A continuous vapour control layer is created when the boards' joints are sealed and taped in accordance with drylining good practice.

An important factor when dry lining a wall is to provide fire stops along the top and bottom of each board and around all openings (doors, windows, etc.).

These are provided by the battens/studs and prevent fire penetrating behind the insulation layer.

This also helps to prevent thermal looping, leading to an overall improved U-Value for the wall element

The void created between the battens/studs can be used for accommodating services.

XT/TL-MF Insulated Plasterboard is designed to save money and time by reducing the heat loss from buildings.

This insulated plasterboard can be readily cut using a sharp knife or fine toothed saw.

Appropriate PPE should be worn when handling Unilin XT/TL-MF Insulated Plasterboard.

The thermal conductivity (lambda value) of PIR rigid insulation foam core is 0.022W/mK.

The thermal conductivity (lambda value) of plasterboard is 0.17W/mK.




Thickness: 24.5mm

Length: 2400mm

Width: 1200mm

Board coverage: 2.88m2

R-Value: 0.72 m2K/W

Thermal Conductivity: 0.022 W/mk

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

Compressive Strength: >150 kPa

Water Vapour Resistivity: >100 MNs/gm

Reaction to Fire: Euroclass B s1 d0

Fixing Method: Mechanically Fixed

Front Face Finish: Plasterboard

Reverse Face Finish: Foil Backed PIR Foam


Unilin XT/TL-MF Mechanically Fixed Foil Backed Insulated Plasterboard Features:

 · Saves money and time.

 · Incorporates an integral vapour barrier.

 · Helps to reduce the risk of condensation.

 · Reduced insulation thickness.

 · Reduce the risk of condensation.

 · Suitable for a variety of wall types.

 · Cost effective 3 in 1 solution.

 · Suitable for refurbishment and new build.

 · Easy to install and decorate.

 · Effective thermal insulation and drylining.

 · Insulation and drylining in one easy applicable board.

 · Provides an effective Vapour Control Layer (VCL).

 · Cheaper alternative to Celotex PL4000, EcoTherm Laminate, Gyproc Thermaline and Knauf Laminates.

 · Thermal conductivity (PIR core lambda) 0.022 W/mK.


Unilin XT/TL-MF Foil Backed Insulated Plasterboard Installation Step by Step:

1. Ensure the wall is dry, clean and free of protrusions. 

Any existing wallpaper should be removed.

2. Fix metal frame system or timber battens to the wall in accordance with the manufacturer’s instructions. 

Sections should be placed around all wall edges and around openings and services.

3. Fix the metal frame system or vertical timber battens at a maximum of 600mm centers. 

(incorporating a vertical DPC behind timber battens). 

Ensure framing system or battens are wide enough to offer 20mm support to all four edges of the plasterboard. 

Pack battens if necessary to level the wall. 

Extra noggins may be required when the Unilin XT/TL-MF is unsupported by the battens.

4. Lift the Unilin XT/TL-MF into position using wedges on the floor. 

Insulation should be cut back to accommodate an adjoining panel at external corners. 

Joints should be tightly butted.

5. Fix Unilin XT/TL-MF to the frame at 300mm centres using appropriate fixings eg. drywall screws, at least 12mm in from the board edge. 

The fixings should penetrate at least 25mm into the timber batten.

Fixings should be thermally broken where possible. 

6. Seal and tape the joints of Unilin XT/TL-MF to ensure a continuous vapour control layer is created. 

Fill any gaps with foam filler.

7. Plaster skim to finish.

When upgrading existing properties, a professional should be engaged to assess the property for appropriate insulation treatments and effective detailing. 

Walls should be dry and decoration stripped back to the wall substrate. 

Appropriate ventilation strategies must be considered as part of the overall energy upgrade.


Related Articles - InsulationGo Blog

 · 5 Benefits of Insulated Plasterboard




*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

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

*Special Product - Non returnable cancelable.

Board covarage 2.88 m2
Colour Greyish
Compressive Strength 150 kPa
Density 30-32 Kg/m3
Length 2400mm
Material PIR core ǀ Gypsum plasterboard
R-Value 0.72 m2K/W
Reaction to fire Euroclass B s1 d0
Size 24.5mm x 1200mm x 2400mm
Thermal Conductivity 0.022 W/mk
Thickness 24.5mm overall
Water Vapour Resistivity 100 MNs/gm
Width 1200mm
Vapour Resistivity 100 MNs/gm
Finish Foil Backed Insulated Plasterboard
Shipping method Articulated Vehicle ǀ Courier
Applications Internal walls ǀ Sloped roofs ǀ Ceilings
BBA Certified Yes (no. 08/4613)
Type Foil Backed Insulated Plasterboard
Vapour Control Layer Yes, build in
Fixing method Mechanically Fixed
Decoration Accept drywall adhesive
ETA Notification Yes
Features Provides a gas and vapour tight barrier
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.
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
24.5mm Unilin XT/TL-MF Foil Backed Insulated Plasterboard (25mm)
£ 63.68