20-40mm Drainage Aggregate

Our 20–40mm Drainage Aggregate is a coarse, uniformly graded stone produced through controlled crushing and screening to deliver excellent free draining performance. Its larger particle size makes it ideal for use in drainage trenches, soakaways, attenuation systems, filter media, land drainage schemes, and other civil engineering applications where rapid water movement and long term stability are essential.

We supply 20-40mm gritstone from our Howley Park and Fletcher Bank quarries and 20-40mm limestone from our Stainton Quarry.

Available for collection or delivery within a 50 mile radius of our Howley Park, Stainton and Fletcher Bank quarries.

• Loose, tipped loads
• Coarse, free draining aggregate ideal for effective water flow
• Durable stone suitable for long term drainage performance
• Uniform grading ensures consistent installation and predictable behaviour
• Suitable for soakaways, land drains, filter layers and attenuation systems
• Minimises water build up around infrastructure and groundworks
• Flexible service paired with specialist knowledge to help you deliver projects on time and on budget