Dimensions | 1200 × 450 mm |
---|---|
Brand |
Celotex |
Thickness |
75mm |
Material Type |
Polyisocyanurate (PIR) |
Pieces Per Pack |
8 |
Sales Unit |
Board |
Unit Coverage |
4.32m2 |
Manufacturers Reference |
CW4075 |
Thermal Conductivity |
0.022W/mK |
Density |
31.5kg/m3 |
Fire Rating |
Euroclass F |
Edge Type |
Square |
Facing |
Low Emissivity Foil |
Weight (kg/m2) |
2.78kg/m2 |
Product Range |
Celotex Cavity Wall Board (CW4000) |
75mm Celotex cavity boards are rigid PIR insulation boards designed for enhanced thermal performance in cavity wall applications.
Celotex CW4075 75mm Cavity Wall Insulation Board (1200mm x 450mm) – 4.32m2 pack
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£64.23 Original price was: £64.23.£43.90Current price is: £43.90. ex VAT
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75mm Celotex cavity boards are rigid PIR insulation boards designed for enhanced thermal performance in cavity wall applications.
EXCELLENT Based on 991 reviews Matthew C2025-03-25Trustindex verifies that the original source of the review is Google. Fast delivery all spot on Rimi Beshiri2025-03-25Trustindex verifies that the original source of the review is Google. Karl was very helpful and very proffessional . i am a happy customer . Robert Osman2025-03-24Trustindex verifies that the original source of the review is Google. Insulation board delivered to schedule and in good condition. Philip2025-03-24Trustindex verifies that the original source of the review is Google. Great price and fast delivery Leonard2025-03-24Trustindex verifies that the original source of the review is Google. Good price.Fast and safe delivery. I will order again. 👍 ashley edwards2025-03-24Trustindex verifies that the original source of the review is Google. We have used trade insulations various times now and they never disappoint. The team are always helpful and go above and beyond to make sure your order is delivered without any hiccups or stress. There website is easy to use and the process from finding the materials to having it delivered is seamless not to mention the prices on offer are incredibly competitive. Pawel 802025-03-23Trustindex verifies that the original source of the review is Google. Great service, fast delivery Glenn Brammer2025-03-19Trustindex verifies that the original source of the review is Google. First class service, great communication and price ste griffin2025-03-17Trustindex verifies that the original source of the review is Google. As always Great service, no problems with delivery, good product at fair prices⭐⭐⭐⭐⭐ Tim Gatti2025-03-15Trustindex verifies that the original source of the review is Google. Great products at a great price and delivered on the scheduled date. Great service! Great company!
Celotex 75mm Cavity Wall Insulation
Celotex 75mm Cavity Wall Insulation Board are 1200mm x 450mm in size. The 75mm Celotex Cavity Wall Boards are 75mm in thickness and are for use in cavity walls. The product code for the Celotex 75mm Cavity wall board is CW4075 and forms a part of the CW4000 range. Celotex cavity wall insulation boards are made from Polyisocyanurate, which is popularly known as PIR. This product features low emissivity foil facings on both sides to enhance thermal performance in sealed cavity air spaces. In addition to this, the CW4075 Board boasts a thermal conductivity of 0.022w/mK.
Celotex is a household name within the insulation industry. They are constantly improving their products and processes. Moreover, Celotex 75mm Cavity Wall Insulation Boards boast superior performance in partial fill cavity wall applications.
When it comes to sustainability, Celotex is on top of its game. Their Cavity Wall Boards are manufactured using a blend of blowing agents with zero ozone depletion potential (zero ODP) and low global warming potential (GWP). This means that the product itself is made in a way that reduces the impact on the planet. In addition to this, the installation of the Celotex Cavity Boards means that more heat can be retained in homes, which reduces the need for excessive energy usage to keep a house warm. In summary, Celotex Cavity Wall boards are great for the planet from manufacturing to the benefits of the installation.
75mm Celotex Cavity Wall Board Application
Celotex Cavity Wall Boards are designed for use in partial fill, masonry cavity wall applications. The product itself is specifically made to fit between cavity wall ties. 75mm Celotex Cavity Wall boards are 75mm in thickness. Cutting the board is not required as it fits standard wall tie spacing requirements. This cuts down installation times and therefore makes it a great solution to traditional methods.
75mm Celotex Cavity Wall Insulation Boards are tongue and grooved and are lightweight and easy to install.
The Celotex CW4000 range is long-lasting and extremely durable. When storing 75mm Celotex Cavity Wall Insulation, we recommend that you store the PIR board inside. Furthermore, this is to prevent the effects of weathering. If there is no other option but to store the cavity wall boards outside then keep them raised from the ground to avoid ground moisture. The 75mm Celotex Cavity Boards should be kept out of direct sunlight. If outside, this means they should be either under cover or protected with opaque polythene sheets. Furthermore, adverse weather effects could damage the board and affect performance so correct storage is appropriate. It is also worth noting that all of our CW4075 Cavity Wall boards are brand new. As a dedicated seller of insulation, we are able to offer our best price on 75mm Celotex Cavity Wall Insulation.

Key Features of the Celotex CW4000 Range
- Celotex 75mm Cavity Wall Boards are lightweight
- They have great thermal performance
- They are both sustainable and energy efficient
- CW4000 boards are reliable and durable
- Celotex Cavity Wall Boards are water repellent
- The CW4000 Boards easy to install
- They are free from harmful gases (CFC and HCFC)
- They do not add to the formation of any gases with Ozone Depletion Potential (ODP) or Global Warming Potential (GWP)
Other advantages of 75mm Celotex Cavity Wall Insulation Boards are that they are able to conveniently fit in between cavity wall ties through cavity ties clips. In addition to this, the 75mm CW4075 offers long-lasting energy savings when installed. The aluminium foil faces allow for enhanced thermal performance. The board itself has exemplary dimenstional stability. Furthermore, CW4075 achieves a BBA (British Board of Agrement) and BRE (Building Research Establishment) Green Guide Rating of A. This means the installation of Celotex’s Cavity Wall Boards can help upgrade environmental performance.
Celotex Cavity Wall Board Certifications
- Euroclass E Reaction to Fire classification, according to BS EN 13501-1
- A rating in comparison to the BRE Green Guide 2008
- CE marking complying with BS EN 13165:2001
- BS EN ISO 9001:2000 and quality management systems
- Environmental Management System – ISO 14001:2015
Dimensions | 1200 × 450 mm |
---|---|
Brand |
Celotex |
Thickness |
75mm |
Material Type |
Polyisocyanurate (PIR) |
Pieces Per Pack |
8 |
Sales Unit |
Board |
Unit Coverage |
4.32m2 |
Manufacturers Reference |
CW4075 |
Thermal Conductivity |
0.022W/mK |
Density |
31.5kg/m3 |
Fire Rating |
Euroclass F |
Edge Type |
Square |
Facing |
Low Emissivity Foil |
Weight (kg/m2) |
2.78kg/m2 |
Product Range |
Celotex Cavity Wall Board (CW4000) |
Dimensions | 1200 × 450 mm |
---|---|
Brand |
Celotex |
Thickness |
75mm |
Material Type |
Polyisocyanurate (PIR) |
Pieces Per Pack |
8 |
Sales Unit |
Board |
Unit Coverage |
4.32m2 |
Manufacturers Reference |
CW4075 |
Thermal Conductivity |
0.022W/mK |
Density |
31.5kg/m3 |
Fire Rating |
Euroclass F |
Edge Type |
Square |
Facing |
Low Emissivity Foil |
Weight (kg/m2) |
2.78kg/m2 |
Product Range |
Celotex Cavity Wall Board (CW4000) |
19 reviews for Celotex CW4075 75mm Cavity Wall Insulation Board (1200mm x 450mm) – 4.32m2 pack
Question: | Can these PIR boards be used in partial fill cavity wall applications? |
maxfrommarble |
Answer: | Yes, that is exactly right. The CW4000 range by Celotex was designed for this exact purpose. | |
Question: | Are Cavity Wall Boards easy to install? |
maxfrommarble |
Answer: | Yes, one of the biggest piece of feedback we get on the 75mm Celotex Cavity Wall Board is that they are very easy to install. |
Edwin –
The driver was friendly and helped unload them without any issue.
Dimitri –
Great experience from ordering to customer service
David –
The service was top-notch! Everyone was friendly
Joe –
best products arround by far !
Edward –
Ordered as advised by my contractor, he was really pleased.
Jeremy –
staff updated me every step of the way- very helpful !
Carl –
Worth every penny!
Arthur –
no complaints
Christian –
made a massive change to the house
Kamil –
Great product! Does exactly what it promises.
Caden –
Use on all of my extensions, perfect size
Lincoln –
yes very good, loads of cutting though and makes a mess
Mr Charvis –
Lee –
Speedy delivery and really helpful guy on the phone. 5 stars
michael white –
Used for cavity wall insulation job, good thickness and great to work with.
Lucy Allen –
Thank you
Zoe Mcdonalds –
Didn’t know if I should order Celotex 75mm Cavity or Celotex PIR 75mm but happy with my purchase as didn’t need to cut anything up.
Sara coleman –
Really happy with my delivery 🙂
Cole –
I have always used Trade for my orders, really reliable.