LEWIS shallow Dovetailed metal decking, as part of a joisted floor system, provides a first class solution where acoustics and fire protection are key concerns.

The LEWIS system also works very well with screeded underfloor heating and cooling systems, allowing them to work more efficiently than without the sheets in place.

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 leveling liquid screed.

During the curing period the LEWIS 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 composite floor can be relatively thin – 50 mm in most cases (without UFH pipework).