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: Regulations


2014 has arrived and so, at the risk of being ageist, it’s ‘Out with the old and in with the new’. Given the upturn in demand for new housing many people could be doing just that by getting a helping leg up the property ladder.

As government initiatives on new build continue to encourage the purchase of a shiny new home, housebuilders welcome in the New Year in with open order books and first time buyers with open mouths, astonished that they will be able to afford a state of the art new home. Read more »

celotex-roadshow-#insulatingbritainAt Celotex we are set to launch #InsulatingBritain campaign in spectacular fashion on March 4th, when our custom designed double-decker bus begins a 50-stop UK tour from Ecobuild 2014 – the first time a vehicle of this size has ever been allowed into the event.

What we will be doing

Aiming to educate architects, contractors and the trade to simplify their route to regulatory compliance, the Insulating Britain campaign will see us take part in live webinars and deliver a series of one hour technical presentations from the pink double-decker at various locations up and down the country.

Our Insulating Britain campaign will ensure that industry professionals across the UK can easily access all they need to know about the new UK Building Regulations. With further reductions in CO2 emissions required for England, Wales & Scotland, Celotex product and service solutions will continue to help simplify compliance to these new levels. 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). In addition, we have recently identified a compliance issue relating to our calculation and testing of the declared lambda value of products in the 4000 and 5000 ranges and the Crown-Bond and Crown-Fix products within the Crown Flat Roofing range. Due to this issue, the suspension of the 5000 range will continue and now includes the FI5000 and GD5000 products. Materials relating to the 5000 range products are for information only. Please note that all products in the TB4000, GA4000 below 100mm, PL4000 and CW4000 ranges manufactured after 15 December 2017 will be marketed from January as Celotex 3000 with a declared lambda value of 0.023 W/mK.

Please use the link below to read our full statement regarding declared lambda:

Read more

Please use the link below to read our latest statement regarding Class 0:

Read more

This post discusses Building Regulations surrounding garage conversions and how to best comply with them.

Here at the Technical Centre we talk to a lot of people who are converting existing garages into a habitable space.  Moving into a bigger house or climbing the property ladder may prove costly for some at a difficult time economically, so the idea of making better use of their existing space is favourable.  This makes sense when a lot of garages are typically used to store all sorts of ‘stuff’ and not always the car.

Read more »

Part L 2013 has finally arrived. Just when many had given up hope of seeing them this side of the festive season, the approved documents turned up like a long lost christmas cracker found lurking at the back of the sofa.

So, lets pull the little rascal and see what’s inside…

Read more »

There was a big song and dance last week as more details of the cake that is Building Regs Part L 2013 emerged from the DCLG oven. So is it time to light the celebratory candles on the Part L cake or should we look at the ingredients first?

Part L is ‘The conservation of fuel and power’. It changes on a regular basis (2006 and 2010) and was a way of taking steps towards a goal of Zero Carbon in 2016. It applies to both those existing buildings already adding to the UK’s carbon emissions and those new buildings that will add even more to the total mix. Read more »

We were promised the long overdue response to the Part L 2013 consultation in ‘the Spring’ by the Government.

OK, given the weather, it is quite difficult to know when the Spring ends and Summer starts, however the rain has got warmer so I think Spring has gone, Summer is here and the response has gone beyond tardy and should be made to sit on the Naughty Step when it eventually appears. Read more »

Page 3 of 41234