6F5 Capping delivered in Preston
6F5 is a coarse graded capping material to Specification for Highway Works Clause 613, used to build a working platform over weak subgrades before the sub-base goes down. On soft ground it is far more economical than importing extra Type 1, and it spreads and compacts into a stable layer that protects the formation through the wet.
Into Preston and across Lancashire 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. 24–72 hours on stocked lines across PR postcodes. Artic loads for infrastructure and industrial platforms, 8-wheel tippers for estate work, grab and bulk bags for restricted access.
Specification
- Grading
- Coarse graded, nominal 0–125 mm
- Specification
- SHW Clause 613 capping (Class 6F5)
- Material
- Primary crushed rock
- Typical layer thickness
- Commonly 300–600 mm, per design
- Supply formats
- Loose tipper, artic bulk loads
- 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 Preston sites
- Capping layer over weak or CBR-deficient subgrades
- Temporary haul roads and site working platforms
- Highways and adopted road construction to SHW spec
- Bulk fill and level-up on earthworks schemes
Wet-weather working is the recurring theme in Lancashire — capping and geotextile platforms get used heavily, and programmes are planned so material lands when the site can take it. Infrastructure and link-road work takes volume sub-base; housing sites take phased bedding, sand and topsoil.
What shapes 6F5 Capping supply in Preston
Wet Lancashire ground where capping and geotextile platforms get used heavily is exactly why 6F5 Capping moves in volume around Preston — it builds a working platform that takes plant and lorry traffic before any sub-base goes down. Programmes planned so material lands when the site can actually take it decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing wet arisings where timing the movement matters as much as the route, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Blackburn, Chorley and Blackpool.
Questions we get asked
What is the difference between 6F5 and 6F2 capping?
Both are capping materials under SHW Clause 613. 6F5 is typically a coarser graded fill used where a thicker, robust platform is needed; 6F2 is the finer of the two gradings and is widely used as general capping fill. Follow your earthworks specification for which class is required.
How thick should a 6F5 capping layer be?
Thickness is a design decision based on subgrade CBR and the loading above — commonly 300–600 mm. Your geotechnical engineer should specify it; we supply the tonnage against the design.
Which Lancashire areas do you deliver to?
Preston, Leyland, Chorley, Blackburn, Blackpool, Kirkham and Lancaster on the same haulage routes.
Material out as well as in, around Preston
Most deliveries into Preston 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 6f5 capping in Preston?
Send us the tonnage, postcode and access — quote back within one working day.