Pipe Bedding 4/20 mm delivered in Slough
4/20 mm graded bedding is the workhorse size for larger-diameter and deeper drainage. The wider grading gives strong interlock and good haunch support under 225 mm and above, and it places quickly in volume — which matters when a trench run is measured in hundreds of metres rather than tens.
Into Slough and across Berkshire 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. Stocked lines within 24–72 hours across SL postcodes. Artic and 8-wheel loads for trading-estate and Heathrow-corridor work with timed gate bookings; grab and bulk bags for town-centre plots.
Specification
- Nominal size
- 4/20 mm graded
- Typical use class
- Bedding, haunch and surround
- Material
- Primary crushed rock or gravel
- Compaction
- Strong interlock, good haunch support
- 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 Slough sites
- Bedding and surround to 225 mm and larger drainage
- Deep trench work where haunch support is critical
- High-volume adopted sewer and highway drainage runs
- Attenuation and soakaway fill where void ratio matters
Industrial and data-centre plots take volume Type 1 and capping to a strict daily tonnage, often with vehicle-booking systems and timed gate slots. Residential regeneration in the town centre is the opposite — tight plots, grab access and phased small loads. Made ground on former industrial land makes WAC classification routine.
What shapes Pipe Bedding 4/20 mm supply in Slough
Drainage packages on data-centre and industrial plots plus town-centre regeneration around Slough take Pipe Bedding 4/20 mm in daily call-offs rather than one bulk drop, so bedding lands as each run is dug rather than sitting in the way. Vehicle-booking systems and timed gate slots on data-centre and industrial plots decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing made ground that makes WAC classification routine before anything moves, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Windsor, Maidenhead and Uxbridge.
Questions we get asked
Is 4/20 mm suitable for adopted sewers?
It is widely used for adopted drainage bedding and surround, but the size and class must match the adopting authority's detail and your engineer's specification. We can supply grading and test data to support submission.
Can you deliver 4/20 mm in artic loads?
Yes — for bulk civils programmes we deliver 28–29 tonne artic loads direct to site on a booked call-off schedule, which is the lowest cost per tonne where access allows.
Do you cover Windsor, Maidenhead and Uxbridge?
Yes — those and Staines, Iver, Langley and Burnham are on the same east Berkshire routes.
Material out as well as in, around Slough
Most deliveries into Slough 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 4/20 mm in Slough?
Send us the tonnage, postcode and access — quote back within one working day.