Lewis Flooring System Fire 1

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The object content is configured for use in UK, but it may also be suitable for use in other locations.


Lewis Dovetail Metal Deck concrete composite acoustic floor installed over timber joists. The floor build-up has a number of variables for achieving different acoustic results.

The Fire 1 detail includes the build-up to achieve 60 minutes of fire resistance within timber floors. These are typically existing timber floors within a renovation or conversion to apartments where the existing wooden floorboards are retained. Floorboards are often retained to maintain diaphragm action to the building or where they are required to be retained under listed building status.

This floor detail includes a single 12.5 mm plasterboard, mounted on a timber batten attached to the solid timber joists. Floor boards are above the joists with the Lewis mineral wool resilient strips placed above the joist lines, then the Lewis Deck and a total depth of 50 mm of concrete or screed installed on the top.

Under floor heating can be installed within the concrete layer. Up to 120 mins resistance can be achieved.

Platform Compatible Version Certified to
Revit Revit 2017 + 1 1.3

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