Composite floor decking applications, such as multi-story car parks.


A range of seven composite floor profiles, each designed specifically for a particular application area. The range offers many benefits including speed of installation, long spanning capabilities, lightweight buildings, excellent fire resistance, all responsibly sourced from a UK factory and certified to BES 6001.

ComFlor® specifically designed for rapid installation of flooring and to facilitate lower mass buildings with long clear span composite concrete floors. Large areas can be easily craned into position and in excess of 400 m² laid by one two-man team per day. With minimal mesh or fibre reinforcement and pumped concrete, the completed floor can quickly follow.

With ComFlor® 46, 51, 60, 80 and 100 covering unpropped construction up to 4.5 m, and propped spans in excess of 7 m, each profile offers particular application benefits. The decks are suitable for conventional composite construction where the deck is on the top flange of the steel support beam.

ComFlor® 210 and 225 are both designed to be used with Tata Steel Slimdek® system, or another integrated beam system with asymmetric beams that allow the floor deck to land on the bottom flange. With typical unpropped spans extending to 6 m and propped spans to 9 m the deep decks provide clear open space between beams.

The deck is contained within the beam depth, which provides a very shallow floor zone. The shape of the deck profiles allow for service integration and the whole system provides inherent fire resistance.

The range includes:

- ComFlor® 46:

Classic composite flooring, 46 mm deep profile, easily transported, simple and efficient.

  • Nestable. The simple trapezoidal shape neatly fits one profile into another, allowing more square metres per bundle.
  • Low transport cost. Results in reduced environmental impact and in less crane time.
  • Suitable for export, maximizing the square meterage per container.
  • Fast laying.

- ComFlor® 51+:

A contemporary new design of the original British 51 mm deep re-entrant profile.

  • Virtually flat soffit.
  • Composite performance – floor slab. New embossments give even better shear key.
  • Composite performance – beam. Due to effective shear stud performance.
  • Excellent fire, acoustic, and point loading performance.
  • Easy attachment for services.

- ComFlor® 60:

Combined trapezoidal and re-entrant, 60 mm deep profile.

  • Versatile. The combined round-shouldered profile gives excellent span capability with straightforward service attachment.
  • Low concrete and steel usage to reduce weight.
  • Central stud capability to ensure beneficial placement.
  • Closed ends available.
  • Colorcoat FD®25 or FD®170 pre-finished steel available.
  • 600 mm cover, as recommended by Health and Safety guidelines for installation operatives.

- ComFlor® 80:

Combined trapezoidal and re-entrant, 80 mm deep composite profile with long span capability.

  • Versatile. The combined profile allows easy service attachment, with longer spanning ability.
  • Reduces the number of secondary beams, giving a cleaner, lower cost structure.
  • Central stud capability ensuring beneficial placement.
  • Available in Colorcoat FD®25 or FD®170 pre-finished soffit, giving a bright finish where a ceiling is not used.
  • 600 mm cover, as recommended by Health and Safety guideline for installation operatives.

- ComFlor® 100:

Strong long span, 100 mm deep composite profile for non-composite beams.

  • Long span strength reduces or eliminates temporary propping.
  • Fast laying.
  • Suitable for use with concrete beams or non-composite steel beams.
  • Nestable profile gives low transport and handling costs.
  • Suitable for export, maximising the square meterage per container.

- ComFlor® 210:

The original deep ultra-long span, 210 mm deep composite profile introduced for the first Slimflor® systems.

  • Cross stiffener technology and deep profile shape provides a very efficient metal deck and composite slab.
  • Especially suited to bear on to the extended lower flange of a steel beam, can also be used on the top flange.
  • Nestable profile gives low transport and handling costs, making it suitable for export.

- ComFlor® 225:

High performance, 225 mm deep deck specifically designed for Slimdek® and all other integrated steel beam systems.

  • Optimized profile design gives superb span capability and composite performance with very small concrete usage.
  • Enables all the benefits of Slimdek® type systems, including 6 m un-propped spans, big open areas and slimmer floor zone.
  • Easy service attachment and integration with the inclusion of a re-entrant profile.
  • Provides reduced overall floor height with fewer steel beams which enable an extra floor every eight floors within the same building height.

- ComFlor® Formwork:

32 to 210 mm deep non-composite profiles are available which are used as permanent formwork.

  • The steel decking supports wet concrete and construction loads.
  • Temporary propping is eliminated, and steel lost formwork is left in situ which provides for fast construction.
  • The concrete slab requires a full structural bar or mesh reinforcement.
  • The wide range of Tata Steel formwork profiles ensures the optimum solution is available.

Features and benefits:

  • High levels of fire resistance from all slabs with zero soffit protection.
  • Full traceability of all components.
  • Long spanning capability between beams (deep deck range).
  • Low vibration design to meet the most stringent vibration requirements (deep deck range).
  • All composite decks are CE marked in accordance with BS EN 1090.


Composite floor decking applications, such as multi-story car parks.

General information


Colorcoat FD™ 25

25 micron polyester coating for ComFlor® 60 and 80.

Colorcoat FD® 170

170 micron thick satin embossed plastisol coating for ComFlor 60 and 80, in external or ground slab applications.


Available for all types.


Galvanized steel

Uniclass 2015

Pr_25_71_51_89 Steel profiled sheetPrimary


G30/110 Metal profiled sheet decking

Specification data - Steel profiled sheet

Product Reference

ComFlor® 46

Cover width: 900 mm, 225 mm pitch, 67 mm crown, 46 mm depth.

ComFlor® 51+

Cover width: 600 mm, 150 mm pitch, 40 mm crown, 51 mm depth.

ComFlor® 60

Cover width: 600 mm, 300 mm pitch, 130 mm crown, 60 mm depth.

ComFlor® 60 With Closed Ends

Cover width: 600 mm, 300 mm pitch, 130 mm crown, 60 mm depth.

ComFlor® 80

Cover width: 600 mm, 300 mm pitch, 150 mm crown, 80 mm depth.

ComFlor® 100

Cover width: 700 mm, 233.3 mm pitch, 109 mm crown, 100 mm depth.

ComFlor® 210

Cover width: 600 mm, 421.5 mm crown, 210 mm depth.

ComFlor® 225

Cover width: 600 mm, 400 mm crown, 225 mm depth.

ComFlor® Active

A network of water pipes are embedded into the concrete to thermally activate the floor.

ComFlor® Formwork

See 'Options' and insert type.


As drawing

Insert details. Please refer to manufacturer's span table for profile/ slab depths.

Slab depth

Variable. See 'Options' below and insert requirements.


0.90 mm

ComFlor® 46, 51, 60, 80, 100.

1.00 mm

ComFlor® 51, 60, 80.

1.20 mm

ComFlor® 46, 51, 60, 80, 100.

1.25 mm

ComFlor® 210 and 225.


Colorcoat FD™ 25

25 micron polyester coating for ComFlor® 60 and 80.

Colorcoat FD® 170

170 micron thick satin embossed plastisol coating for ComFlor 60 and 80, in external or ground slab applications.


Available for all types.

Standard product features


Galvanized steel.


  • White (for optimum reflectivity).

Maximum sheet lengths:

  • ComFlor® deep decks: 10 m.
  • ComFlor® shallow decks up to 100 mm deep: 12 m.


  • Tata Steel Galvatite®, hot-dip zinc coated steel to BS EN 10346 S280GD+Z275, with guaranteed minimum proof strength of 280 N/mm² and zinc coating of total mass 275 g/m² (including both sides).
  • This is sufficient for internal floors in a non-aggressive environment, which satisfies the requirement in Clause 4.2 BS EN 1994-1-1.

Fire performance and load/ span information:

Consult technical literature for details.

Minimum slab depth required to achieve the following fire resistance:

  • 60 minutes: 70 mm (NWC) and 60 mm (LWC).
  • 90 minutes: 80 mm (NWC) and 70 mm (LWC).
  • 120 minutes: 95 mm (NWC) and 80 mm (LWC).

Supporting beam width:

The width of the supporting beam is taken at 152 mm, except for deep decks which are assumed to bear on an extended bottom flange 400 mm wide.


  • May be controlled by mesh reinforcement provided across the tops of the beams.
  • Additional reinforcement may be required to fulfil the following roles:
  • Transverse reinforcement adjacent to shear connectors.
  • U-bars at composite edge beams.
  • Additional crack control reinforcements.
  • Strengthening around openings.
  • Strengthening at positions of concentrated loads.

Product Options

Product reference:

- ComFlor® Formwork:

  • F32: Cover width: 1000 mm, 200 mm pitch, 32 mm depth.
  • F35: Cover width: 900 mm, 150 mm pitch, 35 mm depth.
  • F46: Cover width: 900 mm, 225 mm pitch, 46 mm depth.
  • F60: Cover width: 700 mm, 200 mm pitch, 60 mm depth.
  • F100: Cover width: 700 mm, 223.3 mm pitch, 100 mm depth.
  • F159: Cover width: 750 mm, 250 mm pitch, 159 mm depth.
  • F210: Cover width: 600 mm, 424 mm crown, 210 mm depth.

Slab depth:

  • ComFlor® 46: 96–250 mm. Concrete volume: 0.077–0.231 m³/m².
  • ComFlor® 51+: 101–250 mm. Concrete volume: 0.091–0.240 m³/m².
  • ComFlor® 60: 110–250 mm. Concrete volume: 0.078–0.218 m³/m².
  • ComFlor® 80: 130–250 mm. Concrete volume: 0.085–0.205 m³/m².
  • ComFlor® 100: 150–250 mm. Concrete volume: 0.090–0.190 m³/m².
  • ComFlor® 210: 260–500 mm. Concrete volume: 0.091–0.331 m³/m².
  • ComFlor® 225: 275–500 mm. Concrete volume: 0.115–0.340 m³/m².
  • ComFlor® Formwork: 82–350 mm. Concrete volume: 0.058–0.182 m³/m².


- Colorcoat FD™ 25:

Suitable for use where the exposed soffit is used as a feature of the building's interior. Topcoat is available in white as standard.

- Colorcoat FD® 170:

Suitable for use where the exposed soffit is used as a feature of the building's interior and where greater environmental protection is required.

Through deck welded shear studs cannot be used, however alternative fixing options, such as pre-stud welding the beam are available.

Third party certifications
  • Certified ‘Very Good’ to BREs responsible sourcing standard BES 6001