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20 mm sub-base aggregate for Marshalls Priora permeable paving systems.


  • Graded to provide a void ratio of 32–40%.
  • Complies with BS 7533.
  • Infiltration rate: 70 000 L/s.hectare.
  • Internal angle of friction tested to ensure constructability and structural stability.
  • Sourcing for local quarries reduces the carbon footprint of the project.

Specification data
Product Reference

Priora Sub-base Aggregate

Standard product features


Colour, shape and texture of aggregate varies by quarry.

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