celotex insulation cg5000

Celotex CW4000 Cavity Wall Insulation

Celotex CW4000 Cavity Insulation is an external wall cavity insulation board made specifically for partial fill cavity wall insulation. With the appropriate wall ties and clips cavity insulation is easily fixed in position inside the cavity. In addition Celotex Insulation board for cavities is manufactured in thicknesses from 25mm-100mm. These are made using zero ozone depletion potential blowing agents with a low global warming potential which is especially relevant. These premium quality boards are produced using PIR foam which is covered on both sides in low emissivity foil facings.

Advantages of partial fill PIR cavity wall insulation

Celotex partial fill cavity insulation can have certain advantages of something like say a standard fiber glass cavity insulation. Resistant to moisture ingress is a very important benefit of the PIR insulation. Importantly also is that they do not support the growth of fungi. Because of the make up of this board it eliminates the risk of water penetration. Another attribute of this Celotex insulation board is it will not settle and leave part of the cavity un-insulated. When comparing the same thickness material for instance to other types of insulation this insulation board delivers a far superior thermal performance. Looking for a good choice of insulation for your project?. It can be said that this high specification cavity wall insulation it is a great option.

Celotex also make premium performance cavity wall insulations that can deliver even higher levels of insulation. Celotex CG5000 partial fill and Celotex Thermaclass 21 full fill cavity insulation make up part of this range. Please note production of CG5000 has been temporarily been suspended.

Furthermore if you require any technical information regarding Celotex CW4000 cavity wall insulation please see the product guide below.

Celotex CW4000 Cavity Wall Insulation at Cheap Prices 

CODE: CW4000
SPECIFICATION: 25mm – 100mm
SIZE: 1200mm x 450mm 

Special offerCelotex CW4000 cavity board
11 sheet deal
Size: 1200 x 450
Thick: 50mm
Only £44.35 + vat
Free delivery over £300 ex vat
Quote: CEL050

Special offerCelotex CW4000 cavity board
8 sheet deal
Size: 1200 x 450
Thick: 75mm
Only £45.75 + vat
Free delivery over £300 ex vat
Quote: CEL075

Special offerCelotex CW4000 cavity board
6 sheet deal
Size: 1200 x 450
Thick: 100mm
Only £45.00 + vat
Free delivery over £300 ex vat
Quote: CEL010

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Dont normally leave reviews but they helped me with products through out my selfbuild and saved me a lot of money

Ady Moon, Moon Building

Nice to deal with, quick delivery and cheap prices.

Simon Berrinfield

Purchsed our floor and wall insulation from this company, they are very helpful and went through the options available to me. after searching about the total price was the best i had so i gave them the order. Deliervy was made in 2 days and everything was fine. I will use them again for the next part of my building project.

James Kergan, JK Building services

Fantastic Company. Helped with the order from start to finish. Even had an issue my end with the payment and they couldn’t be more helpful.

Mike Reynolds

Great service, goods supplied on time , very satisfied

Alan Gibbs

Awesome guys sorted me out when i didnt have a clue what to order top geezers

Badders, Holy smoke Vape store

After days of trying to order some Rockwool from suppliers who never got back to me or quoted silly prices, my enquiry to BMD was answered in minutes politely and with clear knowledge of the products and delivery arranged on the phone all at a great price. Top marks for A1 service and product knowledge.

Rich Jenn

Top Service From quote to delivery can’t get any better thanks

C Lewis, C Lewis Building

Very happy with the service we received. Fantastic product at a fantastic price. Cant recommend Jason and the team highly enough. Ordered during Covid-19 when everything was slightly crazy and delayed and Jason called and said they had a lorry in our area so could deliver the very next day! Thank you guys for 5 star service, will be back in the future . All the best, Lacey. Travellers Finds Ltd

Lacey Griffiths, Travellers Finds Ltd

Good for cheap insulation, i bought some celotex from them and it was delivered last week, it was a lot cheaper than anyone else in my area. i’m very happy with this service.

Rav Kumar

Thanks for my order great service

Yanislav Molkiva,

Thanks for saving my bacon with next day delivery will be back when I need some more Insulation.

Scott Ainsdale, SA Electrical

Ordered online as it was the weekend , recieved a call to arrange delivery day on the Monday morning . all goods arrived in great condition and on the day they said.

Sue Brenner, Holistic regen

Good price, good product great service. Thank you

Julie Rhodes,

As a small building company we find that BMD will equal or beat our trade depot plus we get free delivery too !!, Also we can get everything in one order and being able to talk to an actual person rather than clicking on a website means we get the service we want. saves time and money whats not to like ? :-)

Clemency Bedford, Bedford Building Maintenance

Ordered Celotex insulation from this company for the first time last week and I will definately be back again. Good price and delivery 2 days later thankyou.


Matt Chapman, MC Construction

Excellent company, Jason gave us a really good price and the items were delivered 2 days later much quicker than anyone else could offer. even the delivery driver was incredibly helpful, honestly can’t fault them Jacqui

Jacqueline Jelley,

As described quick delivery and good condition thankyou

Nick Wilson

Excellent price and delivery what more can i say , keep it up BMD