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About CDI

About CDI

CDI Innovative Construction Materials Ltd is a family run business specialising in a range of high performance floors.

At CDI, we pride ourselves with providing a personal and professional service to ensure that our floors meet the highest expectations of each client and project, our approach is to ensure any technical or buildability questions are answered quickly and efficiently.  Our aim is to push the boundaries of what can be achieved with our systems to solve the interesting situations that our customers find themselves in when searching for a solution to their individual refurbishment or build.

We cover the whole of the UK and Ireland from our office and warehouse in Co. Durham in the North East of England. We can often be found on the road, on the train or in the air, visiting Architects, Engineers, building sites and clients to give CPD style presentations or instructions on how our systems are installed to achieve the desired results. We also spend a lot of time at trade shows showing off our systems and getting to talk and discuss face to face with potential clients on how our systems will benefit differing types of construction projects from small domestic extensions to large multi-storey buildings.

CDI are the sole distributor for all Reppel bv. systems within the UK and Ireland, these include the Lewis Deck, Op-Deck, Lacomet, Hody, Max4 and Lewis FastSlab systems.  The Lewis FastSlab foundation system is our own system, tying together a number of elements from a number of manufacturers both here in the UK and over in Holland.

Our small but professional team are always on hand to discuss ways in which we can help you get the most out of what ever project you may be looking to develop. Please feel free to contact us either by phone, email or through the chat function on this website and we will happy to start a conversation.



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Company History

CDI Innovative Construction Materials evolved out of a family business set up by Ian Larnach in 2002 called Ian Larnach Associates (ILA). Initially ILA ran as a construction consultancy business to help introduce new products into the industry as well as providing sustainability and Code for Sustainable Homes services. Ian initially discovered Lewis Deck on the …

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Ian Larnach Associates

Ian Larnach Associates were formed by Ian Larnach in 2002 and were dedicated to Constructing Excellence and Egan Principles. Its intention was to drive forward with the introduction and delivery of new innovative products, systems and new ways of working from within the supply chain. From early involvement with projects it provided a valuable service to …

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Our Philosophy

Our Philosophy is very simple, we’ll do whatever we can to help you get the system you need and provide the support you need through design to installation.

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Meet the team

CDI has a small but experienced team. Chris has a varied CV, but has spent the better part of the last decade in the construction industry advising on sustainability and assisting a number of projects to win national awards, he tends to lead the charge on the technical aspects of the specification of the various systems. …

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What does “Delivery” mean? Well for us it could mean a couple of things. The obvious one is how doe we get our systems and products to you? This is the simple one to answer, it’s however we can. We utilise a number of different solutions when it comes to actually getting our products out …

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Latest Blog

CDI 2019

Notes from a New Self Builder

01st November 2018

Here at CDI we spend a lot of time at exhibitions, on the phone, writing emails and going out to site and advising people on how Lewis Deck, along with our other floor systems, should be installed and how to…

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"How to Choose a Floor Structure" Article

28th June 2018

In the recent Homebuilding & Renovation online magazine Ian Rock discusses the options when it comes to choosing a floor structure for both the ground and upper floors. When it comes to ground floor the usual players are listed. These…

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Twitter/ Facebook

Are You Following Our Social Media Pages?

12th June 2018

Are you following our Social Media pages yet? If not you are missing out on more up to date information about what we are getting up to and where you can meet up with us. You can find us on…

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About CDI - CDI