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

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

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With the shortlist for the recent BBC Sports Personality of the Year Award dominated by Olympians many people will think back to their favourite Olympics with great sporting achievements from the likes of Sir Steve Redgrave on the rowing lakes, Sir Chris Hoy in the velodromes or Denise Lewis OBE in the heptathlon competition.

My favourite Olympics is the 1992 games in Spain not only did Freddie Mercury and Montserrat Caballe’s brilliant ‘Barcelona’ feature in television coverage but Britain’s Linford Christie won the marquee event of the men’s 100m final in a time of 9.96 seconds. Improvements in sports science and training methods have helped subsequent 100m Olympic champions better this time with Usain Bolt posting an incredible 9.69 seconds at the Beijing Olympics.

The need to ‘go faster’ has not only dominated the world of athletics but has also been seen in the construction industry. The rise in popularity of timber frame houses and off site construction pays testament to this trend for improving the speed of builds.How to insulate your attic wall? Things to consider.

Which plasterboard insulation would you recommend?

To assist with this need for speed and efficiency Celotex brought to the market insulated plasterboards Celotex PL4000 and more recently GD5000. Both options feature insulation bonded to 12.5mm plasterboards to form a composite product suitable to either mechanically fix or dot and dab depending on your application.

The benefits of plasterboard insulation

While insulating with a separate insulation and plasterboard is still a viable and popular approach we would highlight the following benefits to customers when using insulated plasterboard…….by Celotex:

  • Using Celotex PL4000 or GD5000 means installers have only one product to source and transport to site. This helps to reduce double handling and save time.
  • Using PL4000 or GD5000 the time physically installing the product to achieve the same plasterboard finish is reduced. This is in addition to the savings on fixings and reduced cutting of boards.

Celotex Plasterboard Thermal LaminateThe Celotex insulated plasterboard range can be used in a number of wall and roof scenarios with the following examples more commonly requested by our customers from the Celotex Technical Centre:

  • Celotex PL4060 features 60mm of Celotex insulation factory bonded to 12.5mm plasterboard and achieves the refurbishment wall U-value in England of 0.30 W/m2K when dot and dabbed to the room side of a 215mm solid brick wall.
  • When 90mm of Celotex FR5000 is positioned between joists in a flat roof Celotex PL4050, 50mm of Celotex insulation bonded to 12.5mm plasterboard, can be fixed to the underside of the joists to achieve the extension or refurbishment U-value for England of 0.18 W/m2K.

What’s the difference between Celotex PL4000 and GD5000?

Just as our sporting heroes, like Christie and Bolt, have strived for the small gains in performance the insulated plasterboard Celotex GD5000 has been developed to give those small improvements over the everyday hero Celotex PL4000. The insulation component to Celotex GD5000 offers a lambda value of 0.21 W/mK as opposed to Celotex’ PL4000 0.22 W/mK offering better thermal performance & thinner solutions.

These small improvements allow constructions to remain as thin as possible despite ever more stringent U-value targets. For example:

  • When aiming for a U-value of 0.17 W/m2K, commonly needed for walls in extensions in Scotland, Celotex GD5025 combined with 120mm of Celotex FR5000 between a 140mm stud can be used.
  • Another popular U-value for extensions, this time in Wales, is 0.15 W/m2K for flat roofs. In this scenario Celotex GD5060 can be used below joists with 100mm of Celotex FR5000 between.

These build-ups are examples of how Celotex PL4000 & GD5000 can not only save time but also space for designers, installers and homeowners alike.

The advisors in the Celotex Technical Centre are always delighted to offer assistance in achieving the most time saving solutions. Feel free to contact them.

Learn about Lambda and how to install insulation plasterboards on The Celotex Academy here