Pipe Bedding 20 mm delivered in Northampton
20 mm single size is a clean, high-void stone used for deep trench surround, soakaways and attenuation layers. With no fines it drains freely and does not slump into voids, so it is the default where the surround also has to store or convey water.
Into Northampton and across East Midlands we supply it loose by tipper, by grab lorry where a stockpile has to be loaded or reached over a boundary, or in bulk bags for plots a lorry can't discharge into. Artic, 8-wheel tipper and grab availability across Northampton, Daventry, Wellingborough and Kettering. Bulk tonnage scheduled to a daily load target on earthworks packages.
Specification
- Nominal size
- 20 mm single size
- Grading
- Clean, washed, fines removed
- Material
- Primary crushed rock or washed gravel
- Void ratio
- Typically around 30% — attenuation duty
- Supply formats
- Loose tipper, grab lorry, artic, bulk bag
- Typical load
- 16–20 t tipper, 28–29 t artic
Lead time
Stocked line — most postcodes in England and Wales are dispatched within 24–72 hours of order confirmation. Scotland and Highland deliveries are typically 3–5 working days. Programmed civils schedules are booked in advance and delivered to your call-off dates.
Typical uses on Northampton sites
- Deep trench pipe surround
- Soakaway and attenuation stone
- Free-draining backfill behind retaining structures
- Filter layers under geotextile-wrapped drainage
Large-footprint industrial platforms dominate: bulk 6F5 capping and Type 1 by the artic load, with programmed muckaway and full duty-of-care paperwork for every movement.
What shapes Pipe Bedding 20 mm supply in Northampton
Drainage packages on large-footprint industrial and distribution platforms around Northampton take Pipe Bedding 20 mm in daily call-offs rather than one bulk drop, so bedding lands as each run is dug rather than sitting in the way. Open industrial plots taking artic tonnage decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing programmed muckaway with full duty-of-care paperwork per movement, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Daventry, Wellingborough and Kettering.
Questions we get asked
What void ratio should I design a 20 mm stone soakaway to?
Clean 20 mm single size is commonly designed at around 30% void ratio, but your drainage engineer should confirm the figure for the material and compaction assumed in the calculation.
Is 20 mm single size the same as 20 mm ballast?
No. Ballast is an all-in mix of stone and sand for concrete. 20 mm single size is a washed, clean stone with the fines removed and is not a concreting material.
Which parts of Northamptonshire do you cover?
Northampton, Daventry, Wellingborough, Kettering, Corby, Rushden and Towcester are all standard coverage, and the M1 and A14 corridors let us reach Milton Keynes, Bedford and Rugby on the same network.
Material out as well as in, around Northampton
Most deliveries into Northampton pair with a removal: the lorry takes your arisings to a licensed facility and comes back loaded, so you pay for one movement rather than two.
Need pipe bedding 20 mm in Northampton?
Send us the tonnage, postcode and access — quote back within one working day.