Welcome to the Celotex Insulation Blog

Here you will find the latest articles written by our insulation specialists focusing on product developments, building regulations and technical guidance notes.

U-value Calculator
Are you on target for Part L?
Use the calculator

Category Archives: News

PIR insulation specialist, Celotex, is to return to Ecobuild for the fifth year running. The company will once again make a lasting impression with an even bigger and better stand at C143, which will host engaging seminars, launch (and demonstrate) a brand new product as well as providing all the tools, technical expertise and support that you have come to expect and rely on from the brand. Read more »

Refurbishment can be a technically challenging area. The Celotex Technical Centre speaks to a wide range of customers every day – many of whom are looking for design advice around a refurbishment project.

Whether it is an architect working on a whole building refurbishment or a homeowner who is looking to upgrade the insulation in their own property, there is often a lot of confusion and even fear around topics such as moisture and condensation.

One area that we are often asked about is pitched roof refurbishment. When it is time to renew the roof covering, homeowners are often keen to take the opportunity to increase the thermal comfort of their home – especially if they have lived for many years in a property with little or no roof insulation.

In this blog we will look at some of the challenges of pitched roof insulation, touch upon some frequently asked questions and introduce an exciting new system – Celotex Rafter Gold. Read more »

2016 has been a busy year of change across the UK. Leicester City Football Club conquered all to win the 2015/16 Premier League title and now sitting down in 12th (sorry to any Leicester fans out there reading this, the only way is up!). The United Kingdom has voted to leave the EU and now Great British Bake Off is switching over to Channel 4. Some might argue these things are trivial in life, but to some, they’re important changes.



Lots of people visit our website every single month and we have over 110,000 Celotex Members’ signed up for access to our innovative digital tools, so it’s important that we let you know about what’s changed. Read more »

IMPORTANT: On 1 September 2017, Celotex took the precautionary measure to temporarily suspend the supply of Celotex FR5000, Celotex CG5000, Celotex CF5000 and Celotex SL5000 while we investigate the results of recent tests (Parts 6 and 7 of British Standard 476). Materials relating to these products are for information only.

Read More here

Cavity Wall full-fill Product Innovation for Celotex is shortlisted for The Building Awards 2016

As a company that leads the way in technological innovations, Celotex filled a huge gap in the market with the introduction of Celotex CF5000. Developed with a clear focus on maximising thermal efficiency with thinner solutions, the new and innovative CF5000 system gives architects, designers and specifiers the whole picture for full fill cavity wall applications.

Instead of choosing commercial value or performance, housebuilders using CF5000 can have both.

The industry challengeCelotex full fill insulation onsite

Cavity Wall (brick/block) is the predominant build method for the UK housing industry with 70% of 27.4 million homes built with cavity walls.

The change to Part L1a in 2013 (which sets the guidelines for new residential house builds) brought a second compliance metric, Fabric Energy Efficiency Standard (FEES).

As a result of these requirements the fabric of the building needed to be more robust, with better insulation, reduced air leakage and improved thermal bridging.

The ultimate goal: the homeowner to switch the heating on less.

Read more »

It is this time of year again, where we have tired and swollen feet from 3 fantastic days at Ecobuild!

Celotex rocked up to the largest construction show this week with the ‘…by Celotex‘ ranges of new innovation and showcased a striking display of fun, practical and educational features through augmented reality, touchscreen games and virtual reality. Among the colourful highlights of the ‘Flat is Back’ campaign we displayed our latest launch of the flat roofing range which comprises three products: Celotex Crown-Bond, Crown-Up and Crown-Fix.

In keeping with the show’s renown for innovation and interaction, the Celotex stand (E4064) offered visitors the chance to ‘Shoot, Share, Win’ in a wonderful social media competition. There was also an opportunity to meet a friendly team of experts from the Celotex Energy Assessment Service who were on hand to discuss visitors’ specific project requirements including advice on how SAP, BREEAM and Thermal Modelling amongst technical and project teams.

Our winner of £200 for Shoot.Share. Win. will be drawn at random next week, but in the mean time take a look and the wacky and wonderful volunteers (including a few staff) and let us know your favourite!

  • #flatisback - Celotex flat roofing insulation
  • #flatisback - Celotex flat roofing insulation
  • #flatisback - Celotex flat roofing insulation
  • #flatisback - Celotex flat roofing insulation




Celotex launch three new flat roofing insulation solutions

Introducing three advanced Flat Roofing solutions featuring cutting-edge thinness and thermal performance with solutions for mechanically fixed single ply and built-up applications as well as our new unique product, suitable for single ply bonded applications.

Celotex Flat Is Back - Flat Roofing Insulation

Our relationship with the UK’s installer and distribution communities has equipped us with unique insights, feedback and testing opportunities. Developed and rigorously tested over eighteen months, our new Flat Roofing products have had to meet demanding standards of integrity and performance.

Celotex Insulation at the RCI Show 2016

The RCI Show is back for it’s second edition tomorrow, opening it’s doors to roofing, cladding and insulation experts. Running over Wednesday the 27th and Thursday 28th, the RCI Show brings together the leading International and UK-based names from the roofing, cladding and insulation sectors, so you can see the very latest that the best in the industry have to offer; compare and source new products; pick the brains of the experts from leading associations; and hear about the key issues that are going to impact on your business and the sector moving forward. Celotex attended the first RCI Show back in late 2014, having a perfect opportunity to connect with roofing contractors, cladding specialists and other construction professionals. Following the success of the 2014 show, Celotex is back, and will be exhibiting on stand G8 in the middle of the hall. You won’t miss us.

Celotex insulation at the RCI Show


Celotex have some very important and exciting announcements at the show so, if you fancy a change of scenery for the next day or two, and want to find out exactly what The RCI Show and Celotex have to offer, head over to the Ricoh Arena and stop by the pink stand. We’ll have our insulation specialists on hand to answer your technical queries and will be giving you the opportunity to pick up some goodies.

See you there!