MetFloor 55 (MF55)
600mm cover width
PLAIN galvanised as standard, or MAGNELIS finishes available
Nationwide delivery
24 hour delivery
24 hour support
A flatter soffit that earns its keep
The virtually flat soffit reduces structural zone depth, simplifies services coordination above suspended ceilings, and means no additional fire protection is required to the beam top flange on qualifying designs. That removes a trade from the programme and a cost from the budget. The clean underside also gives a tidy, paint-ready finish where the soffit is left exposed — no extra cladding, no boxing-in.
Less concrete, lower loads, smaller frame
The trapezoidal design optimises concrete usage, offering significant material savings while maintaining exceptional structural performance. Less concrete means less weight in the slab, which carries straight through to lighter beams, smaller columns and reduced foundation loads — savings that compound across every floor of a multi-storey build. Fewer concrete pours and less pumping also mean less time on site and a lower carbon footprint per square metre.
Spans that cut the prop count
With spans typically reaching up to 3.5 metres (depending on load and concrete depth), the MF55 covers a wide range of applications — from new commercial developments and renovations to multi-storey car parks. Longer unpropped spans mean fewer temporary props, faster deck lay rates and a clearer working area below for follow-on trades.
Fast, safe and predictable on site
Lightweight sheets are quick to lift, position and fix, giving crews an immediate safe working platform as the frame goes up. Consistent profiling and reliable embossment mean dependable composite action with the concrete and fewer surprises at design stage. Backed by full span and load tables, the MF55 lets engineers specify with confidence and contractors price with certainty.
Watch this short video for a quick explanation!
Fire Rating and Structural Integrity: The MF55 system is designed to meet stringent fire resistance standards, providing up to 120 minutes of fire rating when combined with the correct concrete depth and reinforcement mesh.
Delivery and Installation Efficiency: Each artic load can deliver up to 800 m² of MF55 decking, streamlining logistics and minimising on-site storage requirements. Its lightweight yet robust design makes handling and installation faster and safer.
Compliance with Design Codes and Standards (see technical).
THE VERSATILE RE-ENTRANT FLOOR DECK
Features
Profile depth: 55mm
Cover width: 600mm
Pitch: 150mm
Crown width: 41mm
Valley width: 133mm
Available gauges: 0.9mm, 1.0mm, 1.2mm
Steel grades: S350 or S450
Benefits
55mm deep dovetail re-entrant profile, 600mm cover width, virtually flat soffit
100mm minimum slab depth for 60-minute fire rating with normal weight concrete
90% beam top flange coverage in line with SCI P375, meaning no additional fire protection required to the top flange of supporting steelwork on qualifying designs
Wide trough gives great flexibility and efficiency for shear stud placement
Recessed service ribs at 150mm centres for wedge nut and service hanger attachment without drilling
Higher concrete mass than equivalent trapezoidal profiles delivers superior acoustic performance
Thermally efficient profile: small soffit opening limits heat transfer, easing fire rating attainment
Unpropped spans in excess of 3.5m achievable
Available in 0.9mm, 1.0mm, and 1.2mm gauges in S350 or S450 grade
Available with enhanced coating systems for increased corrosion resistance
CE and UKCA certified
Applications
Multi-rise residential towers and apartment buildings where storey height efficiency and acoustic performance are primary design requirements
Student accommodation, hotel, and healthcare developments where 60 or 90-minute fire ratings must be achieved from the thinnest practical slab
Education buildings and public sector projects where acoustic performance between floors is a specification requirement
Refurbishment and extension projects where additional floor depth above existing structure must be minimised
Any scheme where the removal of beam top flange fire protection is a programme or cost objective
TECHNICAL SPECIFICATION
Technical
Structural Performance Analysis
CE and UKCA certified
Available in S350 and S450 grades to BS EN 10346
Fire performance in accordance with SCI P375 for beam top flange coverage
TAB-Deck fibre-reinforced concrete option available as an alternative to fabric mesh reinforcement
Enhanced coating systems available for increased corrosion resistance in more aggressive environments
Supplied in accordance with the BCSA Code of Practice for metal decking and stud welding.
For more infomation, download our datasheet , or click here
GET THE MF55 HERE
9 Gaol Lane, Sudbury, Suffolk, CO10 1JL
Monday - Friday 7.30am - 4.00pm
Saturday - Sunday - CLOSED