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LEWIS Deck - underfloor heating, wet-rooms, acoustic floors

CDI Innovative Construction Materials

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As part of a joisted floor construction Lewis Deck provides a first-class solution for acoustics, fire protection and underfloor heating systems.

Lewis Deck provides a number of solutions for renovations and conversions as well as with new build projects using all types of build including traditional, timber or steel frame as well as new methods of build such as ICF and modular off-site construction and mezzanine floors. 

Apart from standard domestic separating floors, Lewis Deck provides exceptional solutions for bespoke acoustic floors within live music venues, night clubs, restaurants, recording studios, recreational performance studios, specialist test labs, plant rooms and many other commercial applications.

The Lewis Deck profile with its optimal geometry provides a combined action between the Lewis deck panel and the concrete/ screed ensuring an extremely high load bearing capacity. A Lewis Deck composite floor consists of the Lewis cold rolled steel sheet covered with a relatively thin layer of C20/ 25 fine grade aggregate concrete or CA25 F4 free flowing, self-levelling, liquid screed. During the curing period the deck acts as shuttering, but once the concrete/ screed has cured, locking into the Lewis deck it forms an extremely strong, composite, structurally sound floor, i.e. it becomes reinforcement for the concrete/screed. The use of fine grade aggregate concrete can also provide a monolithic finish to provide a “finished floor” option. The overall depth of a Lewis Deck composite floor can be relatively thin – 50 mm in most cases.

Lewis Deck makes it possible to design a composite floor meeting the standards without complicated details. Generally, a fire resistance of 60 – 120 minutes is achievable with all standard LEWIS® details. Fire tests certification is available.

Best acoustic results are achieved by laying a Lewis Deck floor as a “floating Floor”, creating separation between the supporting floor, joists or beams with the introduction of resilient strips. Strips are laid directly to the existing timber floor or placed on top of any supporting joist/beam. The type of resilient strip is determined by the required acoustic and load bearing performance requirements. When looking at an existing floor or timber joists Lewis mineral wool strips or 6mm rubber resilient strips are the most likely solution. When looking for a higher acoustic performance or when the joist/beam spans exceed 800mm and the load bearing capacity will exceed 2.5kN/ m2 there are a range of specialist solutions such as Lewis CDM PF resilient strips or Lewis CDM MTA recycled rubber granulate strips. A range of acoustic strips are available for use with light gauge steel or structural steel beams – details on application. 

Apart from standard domestic separating floors, Lewis Deck provides exceptional solutions for bespoke acoustic floors within live music venues, night clubs, restaurants, recording studios, recreational performance studios, specialist test labs, plant rooms and many other commercial applications.

We can also provide a fully designed underfloor system for use with Lewis Deck and also your ground floor design. 

  • Acoustic Separating Floors
  • Underfloor Heating Systems
  • Wet-room Floors
  • Fire Resistant Floors
  • High Load-bearing Floors

CDI Innovative Construction Materials provide a range of innovative domestic and
commercial concrete floors. These are high performance structural floor systems that can
be laid on timber or steel joists, providing floor reinforcement, wet room systems,
underfloor heating, insulated concrete roof & ground floor systems for high load bearing
situations. These are suitable for all types of construction from residential to industrial from
new built to renovations.

If you are planning a project that requires a new floor and you are wanting more than the
average timber deck that over time will become noisy, move and eventually degrade then
please get in touch. Let us talk you through what our systems are all about and how they
will improve the feel, strength, performance, and heating efficiency of your floor.

As a small family business we are focused on ensuring that we provide you with the best
possible service. So please browse through our website then get in touch with us and
discuss your requirements and needs. If you have drawings please send them through, we
are happy to do “takes offs” from them to calculate the materials needed and then send you
fully itemised quotations.

We are often exhibiting around the UK at various times of the year at Homebuilding &
Renovating trade shows, amongst others, so please have a look at our “Events and
Exhibitions” page to see if we will be local to you in the near future.

If you have any questions or queries regarding any of our systems let us know what they are
and we’ll be happy to help.

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Proud to exhibit at the Homebuilding & Renovating Shows.

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