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4 to 10mm Gravel

4-10mm gravel, also known as pea gravel, is the smallest gravel that we process through the Brewster Bros recycling plant. Our 4-10mm gravel is subangular in shape, unlike typical pea gravel which gets its name from its rounded shape.

Applications & Uses

4-10mm gravel is best used for pipe bedding and block production. Its subangular shape makes it ideal to be used as a drainage material. In some circumstances, 4-10mm gravel can be used in concrete production or as a blinding layer above Type 1 sub base.

Our gravel meets the Series 500 Specification for Highway Works. This standard is applicable for materials that are intended to be used for drainage or service ducts.


Specification for Highway WorksBritish Standards
Series 500BS EN 12620
BS EN 13242
4-10mm Gravel

How do we separate and produce our 4-10mm gravel?

  1. Step One:
    The construction and demolition waste enters our state-of-the-art recycling plant. 
  2. Step Two:
    Oversized materials are removed at this stage so that nothing bigger than 100mm enters the recycling process. 
  3. Step Three:
    A large magnet removes any remaining metal.
  4. Step Four:
    The aggregate and sand are separated. The aggregates are sent through the aggregates processor whilst anything below 4mm is diverted to the sand plant.
  5. Step Five:
    The processor gives the aggregate a thorough wash and scrub when it’s cleaned through the log washer. 
  6. Step Six:
    Finally, the aggregates are screened by a range of sieves to split them into 3 different sizes, 4-10mm, 10-20mm and 20-40mm. The 3 different-sized recycled aggregates are then fed out of the plant on conveyor belts to their individual stockpiles.

Where does it come from?

  • 4-10mm gravel is prevalent through the construction and demolition waste we receive at our recycling plant. We use a circular business model to recover and regenerate waste to minimize the impact on the environment. By regenerating waste from the construction, demolition and excavation industries we can extract the maximum value from the aggregates, keeping them in circulation for as long as possible. Virgin aggregates like sand are core building resources but they are in limited supply so using recycled aggregates reduces the demand for these energy intensive materials. The current linear model of take, make, dispose isn’t sustainable and is having a severe effect on the environment.