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60mm XT/CW Partial Fill Cavity Insulation Board (pack of 7)

60mm Xtratherm XT/CW T&G Thin-R PIR Insulation Partial Fill Cavity Walls (1200x450) - pack of 7
60mm Xtratherm XT/CW T&G Thin-R PIR Insulation Partial Fill Cavity Walls (1200x450) - pack of 7
60mm Xtratherm XT/CW T&G Thin-R PIR Insulation Partial Fill Cavity Walls (1200x450) - pack of 7
60mm Xtratherm XT/CW T&G Thin-R PIR Insulation Partial Fill Cavity Walls (1200x450) - pack of 7
60mm XT/CW Partial Fill Cavity Insulation Board (pack of 7)
  • BBA Certification No. 08/4613
  • Board coverage : 0.54m2
  • Pack coverage: 3.78m2
  • R-Value:  2.7m2K/W
  • Surface spread of flame: Class 1
Estimated delivery:
In Stock
£ 93.10
Ex VAT: £ 77.58
  • Brand: Xtratherm®
  • Model: 60mm XT/CW
  • Weight: 8.75kg
  • Dimensions: 1,200mm x 450mm x 60mm
  • SKU: 60mm
  • Product code: P1-264
  • MPN: 60mm XT/CW T&G Cavity

Options available

60mm Xtratherm XT/CW Partial Fill Cavity Wall Insulation Board is a tongue and groove PIR rigid insulation board with certified thermal conductivity of 0.022 W/mK designed for use in traditional masonry partial fill cavity walls.

XT/CW is a lightweight, easy to handle and install material which can be readily cut by bricklayer using a sharp knife.

Xtratherm Cavity Wall is a highly-durable, rot proof insulation board and will remain effective for the life span of the building.

Thin-R XT/CW offering highest thermal standards whilst maintaining a residual cavity - protection from wind driven rain.

Xtratherm Partial Fill Cavity Walls XT/CW (T&G) range is a top-class polyisocyanurate (PIR) insulation with composite foil facings and certified thermal conductivity as low as 0.022 W/mK.

High-efficiency foil faced polyisocyanurate (PIR) rigid foam insulation is commonly used in construction industry.

This product is an improvement of previously used PUR boards (polyurethane), typically produced as a foam and used as rigid thermal insulation.

XT/CW insulation core and composite foil facings resist attack by mould, fungi, bacteria and microbial growth.

PIR foam is not only safe but also beneficial to the health of building users and installers.




Thickness: 60mm

Size: 1200mm x 450mm

Board coverage: 0.54m2

Pack coverage: 3.78m2

Density (Foam Core): 30Kg/m3

Weight: approx. 8.75kg

Thermal Conductivity: 0.022 W/mk

R-Value: 2.7m2K/W

Commpressive Strength:  >120 (kPa)

Water Vapour Resistivity: >100 MNs/gm

Surface spread of flame: Class 1

Reaction to fire: E


Handling, Cutting and Storage

Xtratherm 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.

The boards are wrapped in polythene packs and each pack is labelled with details of grade/type, size and number of pieces per pack.



Xtratherm products are stable, rot proof and will remain effective for the life span of the building, dependent on specification and installation. 

Care should be taken to avoid contact with acids, petrol, alkalis and mineral oil, when contact is made, clean materials in a safe manner before installation.


Key Points

· Robust Tongue & Groove Jointing

· Corner Panels & Cavity Closers: Reduced Thermal Bridging

· Clear Cavity Maintained

· No Exposure Restrictions

· Low Emissivity Foil Facings



· 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 access to all PDF files.

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


*Special Product - Non returnable cancelable.

Board covarage 3.78 m2
Commpressive Strength 120 (kPa)
Density 30Kg/m3
Length 1200mm
Material Polyisocyanurate (PIR)
Profile T&G (tongue and groove)
R-Value 2.7m2K/W
Reaction to fire E
Size 1200mm x 450mm
Surface spread of flame Class 1
Thermal Conductivity 0.022 W/mk
Thickness 60mm
Water Vapour Resistivity 100 MNs/gm
Weight approx. 8.75kg
Width 450mm
Vapour Resistivity 100 MNs/gm
Shipping method Articulated Vehicle ǀ Courier
Applications Cavities ǀ Masonry Walls
BBA Certified Yes (No. 08/4613)
ETA Notification Yes
Features Lightweight ǀ Easy to handle and install
Manufacturer Xtratherm®

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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.
60mm Xtratherm XT/CW T&G Thin-R PIR Insulation Partial Fill Cavity Walls (1200x450) - pack of 7
60mm XT/CW Partial Fill Cavity Insulation Board (pack of 7)
£ 93.10