Structural Decking OD158 / 750

Structural Decking OD158 / 750

Contact us

OD158 / 750 Structural Deck


To be used with the following products

  • ‘Zip-Up’ or Secret Fix Standing Seam Profiles such as SpeedZip®, SpeedDeck® & SpeedRoof®
  • Flat roofing materials such as Single Ply Membrane, Asphalt, 3 Layered Felt or Hot melt systems

Typical Spans

  • Single Span: typically up to 7.7 metres
  • Double Span: typically up to 9.1 metres
  • Multi-Spanned: typically up to 9.5 metres
    Maximum Standard Sheet Lengths up to 13.6 metres (Longer lengths Priced on Application)

Materials, Gauges & Finishes

Steel Materials

  • 0.75 / 0.88 / 1.00 / 1.13 / 1.25 / 1.5 mm thickness

Finishes Avaliable

  • Galvanised Steel
    Hot dip zinc coated steel EN 10147 S280GD +Z275
    Minimum zinc coating mass 275gr/m2 both sides
  • Painted Steel
    Hot dip zinc coated steel EN 10147 S220GD +Z275.
    Bright White RAL 9010 (nominal) colour polyester coating – 15 micron coating for internal use
    Bright White RAL 9010 (nominal) colour polyester coating – 25 micron coating for external use

Fixing Specification

  • Intermediate 1 Nr SDIBSW into every trough
  • End Laps 2 Nr SDIBSW into every trough
  • Side Laps SDIBSW or pop-rivet at 450mm centres


  • ISO 9001, ISO 14001 (materials)

Fire Rating

  • All non-perforated roof decking achieves a Class 1 fire rating in accordance with BS 476: Part 7 and meet Class 0 requirements as laid out within current building regulations


  • This structural deck is produced in a solid and perforated format
  • Our standard perforation pattern 5 x 8 provides a 35% open area. Please note this refers to the web element of the deck profile for maximum sound absorption coefficient without compromising structural integrity
  • Other perforation patterns available based on minimum order value

Structural Design

General Use 

  • The design and application of profiled roofing and cladding is covered by BS 5427 : Part 1 : 1996 Code of practice for the use of profiled sheet for roof and wall cladding on buildings. Part 1. Design


  • Non-fragility requirements are determined by ACR(M)001:2000 Test for Fragility of Roofing Assemblies. (Second edition)


  •  Calculate loads in accordance with: BS 6399 Part 2 : 1997 Code of Practice for wind loads. BS 6399 Part 3 :1988 Code of Practice for imposed roof loads (including snow and snow drifting)

Structural Design

  • Eurocodes
    BS EN 1991 Eurocode 1: Basis of design and actions on structures 

    Part 1 Basis of design
    Part 2 – 1 Densities, self-weight and imposed loads
    Part 2 – 2 Actions on structures exposed to fire
    Part 2 – 3 Snow loads
    Part 2 – 4 Wind actions BS EN 1993 Eurocode 3 : Design of steel structures
    Part 1 – 3 Cold formed thin gauge members and sheeting

For more information download our datasheets

System Building Products Limited

Throughout history, the building industry has taken on a myriad of shapes, styles and textures. Whether in response to emerging technologies, new approaches, anticipation of future trends or a respectful take on the past, architecture is a living reminder of how our urban environment has evolved and continues to evolve year on year. Architecture today needs to deliver on so much, from meeting standards and environmental ratings to maximising value and achieving uniqueness.

At System Buildings Products, we understand this, and by combining our expertise and your project needs, we will deliver the systems and results you expect.