Our Systems

Our Systems

Construction Systems

What we do.

Our bread and butter. Our product list of systems can all be found on this page.

Lewis Deck

Lewis Deck

Lewis Deck Dovetailed Sheeting Metal Decking is a composite floor system, giving a thin, but extremely sturdy concrete floor over traditional or metal web timber joists. The Lewis Deck system works very well with underfloor heating and cooling systems, providing a metal deck that conducts the heat across the floor and a screed or concrete …

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Max 4

Max4 without UFH

Max4 reinforcing sheets provide a great solution for leveling uneven existing floors with the introduction of reinforced ultra thin light weight liquid screed floors in projects where weights and height restrictions are an issue. The Max4 reinforcing sheets are manufactured from 2 sheets of special profiles steel and designed for use on existing timber or …

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Op-Deck

Op-deck is a lightweight insulated floor system. The advantages of composite metal deck concrete floors and traditional rib floors have been combined in this unique patented flooring system. This insulated concrete floor system (ICF) is based on traditional concrete installation but with optimal design and installation flexibility. It is suited to insulated, high-load-bearing applications including …

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Hody

Hody Trapezoid 60mm metal decking for composite concrete floors

Hody profiled steel sheets have a modified trapezium shaped profile of 60 mm in height and intended for constructing, so-called, ‘low’ composite steel decking. The finished concrete floor is between 110 mm – 290 mm high and Hody trapezium sheets can be used on free spans of up to 8 metres over the bearing construction. …

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FastSlab Foundation

Steel Screw-piles, steel lattice ring-beam, steel internal beams and expanded polystyrene (EPS) insulation blocks with the Lewis Deck over the top

The FastSlab Foundation System is a fast track method to construct foundations and ground floors, ideal for sites with limited access, poor ground conditions, flood plain locations and areas with tree root issues. It also works equally well in all ground conditions whilst eliminating a sometimes difficult and expensive muck shift. A typical FastSlab house …

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FastSlab

FastSlab ground floor renovation system to replace an improve a timber ground floor and include underfloor heating. maintains the void

The FastSlab Ground Floor system is designed to make it quick and easy to replace existing suspended ground floors with an insulated concrete or screeded floor. This gives the solid feel of a concrete ground floor with the benefit of maintaining the ventilated void beneath to prevent moisture issues in the existing walls. The FastSlab …

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Lacomet FL

Lacomet flashing being used with ceder shingles on a gold clubhouse roof

Lacomet FL (FL stands for flexible) is a modern aluminium based flashing material that is ideal to be used for new-build, renovation, for conservatories or for wide/ long valleys & gutters etc. It is especially useful to combat the theft of traditional lead as it has no resale or scrap value. Used in combination with the …

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FAQs

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Q

Lacomet – How come it has no scrap value?

A

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

Can joists and decking for Lewis FastSlab be cut by hand e.g. hacksaw or angle grinder?

A

The FastSlab beams and the Lewis Deck are generally cut on site. Typically we see the Lewis Deck being cut with an angle grinder, a circular saw or a powered hacksaw.

The FastSlab beams can be cut with the same – the hacksaw possibly being the best option here.

Q

Do I keep my joist centres at 400mm when using Lewis Deck?

A

One of the great things about using Lewis Deck is that it opens up a number of different options for you and one of them is around joist centres you can work with.

Traditionally we see the vast majority of architects and designers insisting that timber joists be installed at either 400mm or at most 600mm because this is the limit of what timber floor systems will effectively span to. Now with Lewis, because of its unique profile (with the dovetails dimensions) and the way it interacts with the thin (50mm) screed laid on it, you can actually go much wider than these figures.With a 50mm screed, on top of the sheets, Lewis allows you to have unpropped centres of up to 1200mm (1.2m). Even at these much wider centres Lewis will allow you to have a permissible load of 14.8kN/m2, which in English is just under 1.5 Tonnes per m2. Now this might sound fantastic, and it is, but in reality for 95% of new build homes this figure won't really make too much difference to what you were planning on doing with upstairs.What it does mean though is that at your normal centres, of approximately 600mm, your floor becomes so much stronger than traditional forms of floor structure that it allows you to do things on the 1st floor that you take for granted on the ground floor.First of all is the obvious one, you get a solid floor, meaning no more squeaky floor boards or hearing people walking around upstairs and knowing exactly where they are up there! Having the solid floor gives you the chance to have a very efficient underfloor heating system (see our applications section for more details) which in most cases will probably mean a slight reduction in your fuel bills.Other big benefits of having a stronger floor upstairs include being able to have either thinner tiles or much heavier tiles than you can use on timber floor systems. The screed and Lewis working together pretty much stops any deflection in the floor meaning that these types of tiles won't crack or move and lift over time as the floor doesn't move or deflect!So in conclusion yes you can have much wider joist centres than the 400mm centres that you normally see on new developments but even if you wanted to keep them the same by using Lewis Deck it opens up so many benefits that you just aren't able to incorporate with traditional timber floor systems. However the joist centres are usually controlled by the load capacity of the joist and not the spanning capacity of the Lewis Deck.

Q

Do you fix Lewis Deck down to the joists?

A

The short answer to this is no Lewis Deck doesn't have to be fixed down.

Generally the reason why people choose to use Lewis Deck over more traditional floor systems is that they are looking to enhance the upper floor that they are working on. So if you are going to be looking at using Lewis then you might as well look to incorporate its full range of benefits. One of which is the major uplift in acoustic performance that you get from using the system.Getting the best results, acoustically, is achieved by laying the floor as a floating floor. This then creates separation between the supporting floor joists and and the steel deck. To enhance this further introduce a resilient strip on top of the joist. See below.[caption id="attachment_559" align="alignnone" width="300"]Lewis Metal Dovetailed Sheeting Deck with acoustic Sylomer resilient strips Lewis Metal Dovetailed Sheeting Deck with acoustic Sylomer resilient strips[/caption]When it comes to determining which of our acoustic resilient strips to use (because we have a few of them and they all do different jobs depending on the use of them and the type of structure below) we are happy to help you come up with the correct option that suits your project the best.A standard Lewis Deck floor detail (such as the detail above) easily achieves UK requirements for acoustic (as well as fire) resistance for residential separating floors. Higher performance standards are easily achievable too. Because of this we have seen Lewis Deck used frequently in in bespoke projects such as live music/ theatre venues, cinemas, recording studios, specialist test labs, plant room floors and many other commercial applications.Note: some joists my require lateral stability and therefore lateral restraint straps or timber noggins or a sacrificial timber board may be required to achieve this, your joist supplier or designer will be able to provide this information, in some cases the Lewis Deck can be fixed down to provide this action if required.Please feel free to give us a call and discuss this further should you wish to do so.

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Latest Events

and Exhibitions

Latest Blog

CDI 2017

We've a new model down at Swindon!

18th May 2017

One of the great benefits that you get from introducing Lewis Deck into a residential development is the option to install a wet room floor into bathroom/ en-suite areas with extreme ease compared to other flooring systems as well as maintaining one solid concrete slab in the room reducing the possibility of leaks from a …

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Homebuilding & Renovation Show

23rd March 2017

The end of March saw us attend our 2nd exhibition of the month. This time at the Homebuilding & Renovating Show held at the NEC in Birmingham. Our longest show of the year, and one that we’ve attended for the previous 6 years, is the first Homebuilding show of the year. It also seems to …

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Ecobuild 2017

16th March 2017

March is always a busy time for us. Not only is it a lot of companies end of year (so we seem to get inundated with last minute orders!) but it’s also our busiest month when it comes to trade shows, and it begins with the biggest one we do, Ecobuild. Ecobuild, held at Londons …

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Lewis Deck and underfloor heating

LEWIS DECK AND UNDERFLOOR HEATING

28th February 2017

Introduction The Lewis® Deck system is a system that allows the introduction of a suspended lightweight concrete or screed floor into the upper floors of buildings on top of beams or joists. This system provides solutions for acoustics, fire, high loads, underfloor heating (UFH) and wet rooms, it can achieve all of these simultaneously with …

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underfloor heating pipe being laid on Lewis Plate

Another mention in the house building press

28th February 2017

The Lewis Deck has been picked up by a number of magazines over the years, here is the latest mention in a discussion about underfloor in the Real Homes Magazine: Underfloor heating: your questions answered Underfloor heating: your questions answered Thinking of installing underfloor heating? Real Homes has posed your most-asked UFH questions to industry …

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A new chapter for CDI-ICM

17th August 2016

A very warm welcome to the beginning of a new chapter for CDI-ICM. Today we take a very big leap into the 21st century and post our first blog to go alongside the creation of our new website (www.cdi-icm.co.uk). The plan is to post updates at regular intervals keeping you updated about what we are …

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Another Day another Lewis load.

16th January 2017

It might only be the middle of January but already we are seeing a number of projects that we were working on during the back end of 2016 starting to come across the line. Today we have 3 full packs of 60 sheets packed up and ready to head south to a renovation project in …

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