Lewis Deck to The Old Post Office, Brockhall Village

Plot 1, The Old Post Office, Brockhall Village is a self build home for a director of a local construction company.

We were contacted, in September 2016, by a very enthusiastic individual who had used Lewis Deck previously on a commercial project in the Bolton area of Lancashire.

After seeing how easy it was to install and then how the underfloor heating performed in conjunction with the Lewis Deck he told himself that when he built his new home that finally he had found the perfect solution to the problem of an efficient heating system to upper floors.

With also getting the added benefit of solid floors, that won’t ever squeak or creak, and much better sound reduction properties he ordered the Lewis and had it delivered in the same week.


After using Lewis Deck on a commercial project a couple of years ago I was very impressed with its ease of use and also the performance it gave to the floor. Because of this I decided then that when I built my own home Lewis Deck had to be used on the upper floor.

Paul Brett

The total area of the 1st floor was 122m2 and the installation time was only 2 days, for 1 joiner, and this included an hours training from CDI at the beginning of the first day.


Screeding was due to commence at the beginning of December 2016 and they are planning on using Gyvlons Thermio+ screed.

Lewis Deck Specification:

  • 52mm total depth Gyvlon Thermio+ liquid screed with a 20mm minimum cover to the heating pipes
  • 16mm Lewis Deck (laid floating)
  • 6mm Lewis acoustic tape
  • Mineral wool acoustic flanking strip between the Lewis Deck and the perimeter of all walls (for expansion and acoustic separation)

For more information on the project and Lewis Deck specification/performance please contact CDI Innovative Building Materials:

01388 728833

Anhydritec Ltd (Gyvlon Screeds), Warrington: Tel 01925 428780 www.anhydritec.com


Ask CDI a Question

  • Q

    What are the Lewis Deck sheet sizes?


    Q: What sheet sizes are held in stock for delivery within a few days after order? A: We stock 2500mm and 1300mm sheets.  These are all 630mm wide and 16mm deep.  Deliveries are made via the pallet network directly to site.  The smaller sheets are aimed at small bathroom renovation projects and can be supplied in small numbers via TNT. 2.5* and 1.3m sheets allow for the 100mm overlap to occur over a joist, with joist centres being either 300mm, 400mm, 600mm, 800mm*, 1200mm and 2400mm*. (*2.5m sheet only) For larger projects we are able to produce bespoke sheet sizes if required, please get in contact to discuss other options for sheet sizes.


    Lacomet – How come it has no scrap value?


    Lacomet – How come it has no scrap value? Many of the projects that we get involved in starts with a phone call or email to us from someone researching replacing stolen leadwork. Many of these are old buildings, such as schools or churches, where this isn’t the first time that the lead has been stolen and they call us fed up with having to replace it again full in the knowledge that they will more than likely go through the same problem once more in the near future if they continue to use lead. One of the big benefits that Lacomet FL brings to a project is the fact that it has no scrap value and therefore the chances of it being stolen are massively reduced. Due to the 2 thin aluminium layers, and its five layer total construction, it is of no value to thieves. Lacomet can be recycled but the polyester based coating would need to be de-laminated first and the amount of recovered aluminum is then very low, in fact it would be easier and more profitable to collect empty drinks cans than to mess about stripping Lacomet down. We can also supply stickers that can be placed in strategic locations informing people that what is now on the roof is not lead and that it has no scrap value.

  • Q

    Why don't my Lewis sheets interlock like they do in the video?


    Q: Why don't my sheets interlock like they do in the video? A: The sheets have two sides (one printed, one plain), the dovetails on either side are different widths, it is then necessary to alternate the sheets print up and then print down.


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Lewis Deck to The Old Post Office, Brockhall Village - CDI