Blue metal, also called 16-20mm aggregate, is a gravel with a blue-grey hue and can serve various purposes, such as construction or as a decorative landscaping item in residential settings.


  • Blue Metal is a construction material that has been crushed and screened to ensure uniform size.
  • It is commonly used in landscaping due to its consistent appearance and comes in blue-grey.
  • The size of the aggregate is typically between 16-20mm.
Blue metal


  • This material is highly suitable for various construction purposes, including providing drainage support for retaining walls and being used in pot plants and as an ingredient for making concrete.
  • It can also be utilised for decorative purposes, such as creating driveways and pathways.
  • Moreover, it is ideal for enhancing drainage behind retaining walls and in the bottoms of pot plants and raised garden beds.

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