A versatile and simple solution to a wide variety of needs, our interlocking concrete blocks resemble children’s bricks in shape, and fit together in the same way.  As they can be joined together without fastenings or adhesive they are effective and economical choice.  They are used for multiple purposes in the industrial, civil engineering and agricultural sectors.  They can be installed on any reasonable firm and level surface without groundwork.  In construction projects they can be particularly effective as a temporary barrier or retaining structure, whilst in commercial and agricultural sectors they are often used for permanent or semi-permanent storage facilities.


A perimeter wall built using Bunker building blocks is a fast and effective security barrier against all but the most well-equipped intruder.  An advantage over mesh fencing systems is that they also provide visual screening.

Fire Breaks

When used for the construction of recycling or storage bays, Bunker building blocks add a degree of fire resistance which may be helpful for insurance and security purposes.

The Advantages of Interlocking Bunker Building Blocks

These blocks can be used in projects ranging from the smallest to the very large.  Their interlocking design ensures accurate placement and a durable result.  They are quick and simple to install

  • Installation is fast and economical
  • Require no groundwork or fixing
  • Durable and robust
  • Provide acoustic and heat insulation
  • Can be lifted into place using basic equipment
  • Suitable for permanent or temporary installation
  • Can easily be moved when needs change
  • Withstand high loads
  • Require little or no maintenance
  • Ready for immediate use
  • Wide range of sizes
  • Can be used in a range of settings, with or without additional reinforcement:
  • Retaining walls
  • Push walls
  • Silage clamps
  • Fire break walls
  • Storage bays
  • Flood and sea defences
  • Recycling bays
  • Blast walls

Size Range

Croom Bunker building blocks are available in a wide range of sizes:

  • 1.2 metre
  • 1.4 metre (this block includes a lifting hook)
  • 2.4 metre
  • 3.6 metre
  • 4.8 metre

Expert Advice and Guidance Available

Croom are happy to offer advice and guidance on using their Bunker building blocks.  Contact our experts for more information about these and other Croom products.