RDA-C | ‘Clip-on’ Self-levelling Adjustable Decking Pedestal


Self-levelling adjustable decking pedestal with ‘click head’ available in a range of height build-ups, compatible with DS joist, which is clicks into place on pedestal head.

  • Aluminium joists can be clicked into place
  • Multi-directional head allows for multiple configurations, single joists, double joists and perpendicular joist interfaces
  • Ball and socket joint creates a free moving captive head
  • Provides slope correction of up to 10.5% (6°)
  • Millimetre perfect height adjustment
  • Height extension collar raises the total height by 100mm
  • Holes in the base allow drainage and fixing to substrates
  • Wide base protects the roof membrane
  • Base can be cut down to allow for placement against the wall abutment
Download the datasheet


Base shock pads

Base shock-absorbent membrane pads can be installed under the pedestal/support base to enhance acoustic properties, or to provide additional protection to the waterproof system.

Technical Specification

MaterialPolypropylene (recyclable)
Biological/ChemicalResistant to moulds, algae, alkali, bitumen
Base diameter210mm/220mm
Head diameter115-130mm
Bearer capacitySingle or double DS aluminium joist
Working temperature-40°c to 120°c


CodeAdjustable Height Range
RDA-1CAdjustable Height Range: 40-56mm
RDA-2CAdjustable Height Range: 50-70mm
RDA-3CAdjustable Height Range: 70-110mm
RDA-4CAdjustable Height Range: 110-160mm
RDA-5CAdjustable Height Range: 150-210mm
RDA-6CAdjustable Height Range: 200-300mm
RDA-7CAdjustable Height Range: 300-400mm
RDA-8CAdjustable Height Range: 400-500mm
RDA-9CAdjustable Height Range: 500-600mm
RDA-10CAdjustable Height Range: 600-700mm
RDA-11CAdjustable Height Range: 700-800mm
RDA-12CAdjustable Height Range: 800-900mm
RDA-13CAdjustable Height Range: 900-1000mm


Datasheet - RDA-C Decking Pedestal

pdf 0.31 MB

Download the overview for the system for more information

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