North Sea shells (washed)

North Sea shells are washed and used for a wide variety of applications, because they have some very useful and unique features. Firstly, shells have low Specific gravity. They are also permeable. In addition, they have a thermal insulating effect and contain a lot of calcite. For these reasons, washed North Sea shells are often used as a lightweight foundation or as insulation in crawl spaces and other areas with moisture and mould problems. They are also used to make paths in parks and woods.


  • • Type of stone: Calcite
  • • Hardness: Low
  • • Colour: beige / grey
  • • Specific gravity: ± 800 kg/m3
  • • Special features: Very low Specific gravity! Can be supplied with BSB certification

Delivery options

Midibag (0.7 m3) / Bigbag (1 m3),
delivered neutrally in unmarked Bigbags


Loose bulk loads


By barge


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