Delta 20


For use on balconies, walkways, roof terraces and patios.


A durable, non-combustible, two-part aluminium decking system designed to enhance balconies and terraces, available in a range of standard finishes. Available with as a complete decking system with accessories to facilitate fast and accurate installation, Mydek offers unrivalled speed, accuracy and choice in decking solutions.

Features and benefits:

  • Fully certified.
  • Non-combustible.
  • Lightweight.
  • Concealed fixings.
  • Slip resistant.
  • 30-year warranty.
  • 60-year design life.


For use on balconies, walkways, roof terraces and patios.

General information


Polyester powder coated, 80 µm slip-resistant


Aluminium grade 6063-T6

Uniclass 2015

Ss_30_20_30_25 Decking systemsPrimary


Q55/110 Deck

Specification data - Decking systems

Product Reference

Delta 20


RAL 7016 Anthracite Grey

RAL 7037 Dusty Grey

RAL 7039 Quartz Grey

RAL 7040 Window Grey

RAL 8014 Sepia Brown

RAL 8019 Grey Brown

Standard product features

Board size (w x d x l):

144 x 20 x 4000 mm (can be cut length).

Thickness of top:

2.5 mm.


Aluminium grade 6063-T6.


Polyester powder coated, 80 µm slip-resistant.

Technical characteristics:

  • Deflection - 100 kg at 600 mm span (to BS EN 310): 1.1 mm.
  • Deflection - 2 kN at 600 mm span (to BS EN 310): 2.8 mm.
  • Slip resistance (to BS 7976-2 Pendulum Slip Test): Wet: 41 PTV; dry: 63 PTV.
  • Coefficient of thermal expansion: 0.024 mm/m/°C.
  • Coating durability (to BS EN 12206 and BS EN 13438): Qualicoat Class 2.
  • Accelerated wear test (biomechanical, to TM391:2016): ‘Very Slight’ at 50K, ‘Slight’ at 100K.
  • Furniture leg test (scratching, to BS EN 424:2001): No damage, slight transfer.
  • Fire rating (polyester powder coated, to BS EN 13501 – 1 A1:2013: A2-s1, d0.
  • Coating adhesion (to ISO-0 ASTM-5B): No separation.
  • UV stability (to ISO 2810): Class 2.

Product Options


  • Mounted directly onto steel joists with bi-metal self-drilling carbon/ stainless steel screw.
  • Mounted onto aluminium SupportRail™ joist or aluminium bearers with standard self-drilling stainless steel screw.

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