Piling and deep foundation packages

Rospower delivers piling and deep foundation packages across the UK as part of our wider groundworks scope. Piling itself is a specialist discipline with its own rigs, designers, and ticketed operatives, so we deliver it through long-standing working relationships with vetted UK piling subcontractors rather than running our own piling fleet. Clients get the technical depth of a dedicated piling specialist combined with the programme certainty of a single civils contractor managing the whole foundation package.

Across warehouse developments, industrial estates, food and manufacturing facilities, and renewable energy schemes, we have integrated piling packages from specialist subcontractors into our wider groundworks delivery. That track record lets us match the right piling partner to each site’s ground conditions and structural requirements, tender the package competitively, and sequence the piling rig cleanly inside the earthworks, drainage, pile cap, and slab works that we deliver ourselves.

How we deliver piling

Our standard approach is to take a single subcontract that covers the full deep foundation scope. We tender the piling element to the specialist subcontractors we already work with, agree the design and programme, and then run the piling rig on-site as part of our own groundworks sequence. The client signs one contract, sees one programme, and has one point of accountability: Rospower.

This model removes the most common source of delay on a piled scheme, which is the interface between the piling contractor, the groundworks contractor, and the main contractor. We design and construct the working platform, hand the rig over, then take the site back to install pile caps, ground beams, and slabs without losing programme to remobilisation or re-trimming.

Piling methods we coordinate

The right piling method depends on ground conditions, structural load, site access, and adjacent constraints. We work with subcontractors capable of delivering all of the main UK piling techniques:

CFA (continuous flight auger) piling: The default solution for most warehouse, industrial estate, and commercial schemes. Fast, vibration-free, and well suited to mixed cohesive and granular soils
Rotary bored piling: Larger diameter and heavier load applications, often used for portal frame columns, tall structures, and bridge or retaining wall foundations
Driven precast concrete piling: Pre-cast piles driven to refusal, suitable for sites with consistent ground and where displacement and noise are acceptable
Driven steel tubular piling: For high lateral loads, marine environments, or where pile integrity testing after installation is critical
Mini-piling and restricted access piling: For low headroom, internal works, basement underpinning, and tight sites where standard rigs cannot operate
Sheet piling: Temporary or permanent retention for basement boxes, attenuation tanks, and below-ground structures

For every scheme we issue a piling enquiry pack so the specialist designs to the right structural loads, geotechnical data, and tolerance requirements before pricing.

Civils we self-deliver around piling

The piling rig itself is on site for a small fraction of the foundation programme. The civils wrapped around the piling are what we self-deliver, and they are usually the larger part of the package by value:

Working platform design and construction: Engineered piling mats designed and certified to BRE BR470 guidance and Federation of Piling Specialists recommendations, including capping layer, geogrid reinforcement, drainage, and platform certification before the rig arrives
Pile head trim and integrity preparation: Cropping pile heads to design level, exposing reinforcement, and preparing pile heads for testing
Pile caps and ground beams: Reinforced concrete pile caps in single-pile, two-pile, three-pile, and capping beam configurations, fabricated with full reinforcement bending schedules and tied into the structural frame design
Piled slabs: Suspended reinforced slabs spanning between pile caps, including bar mat reinforcement, post-tensioned options where specified, and integration with column starter bars and column kicker pours
Tie-in to surrounding earthworks: Formation level coordination, drainage diversions around pile lines, and sequencing with foul, surface water, and utility services across the building footprint

When piling is the right call

Piling is not always the best foundation solution. Where ground bearing capacity is adequate and settlement under load is tolerable, ground-bearing pad foundations or a ground-bearing slab is usually both cheaper and faster. We work with the structural engineer and geotechnical consultant to compare options on a project-by-project basis and recommend piling only where it is genuinely the right answer, typically:

Soft, made-ground, or compressible soils where settlement under load would exceed structural tolerances
Mixed ground with variable bearing strata across the building footprint
High concentrated loads from portal frame stanchions, racking systems, or tall plant structures
Sites with high water tables where ground-bearing solutions would require extensive dewatering
Brownfield redevelopments where buried obstructions make excavation for traditional foundations uneconomic
Sites with strict differential settlement criteria between adjacent structures or floor finishes

This honesty matters. We would rather lose a piling enquiry to a cheaper ground-bearing solution than land a contract that the client later regrets.

What piling methods are used in the UK?

The main UK piling methods are CFA (continuous flight auger) piling for most commercial and industrial sites, rotary bored piling for larger diameter and heavier loads, driven precast or driven steel tubular piles where ground conditions suit displacement methods, and mini-piling for restricted access or low headroom situations. Sheet piling is used for retention rather than load-bearing foundations.

Does Rospower do piling in-house?

No. We deliver piling through vetted specialist piling subcontractors and self-deliver everything around it: piling mat design and construction, pile caps, ground beams, piled slabs, and integration with surrounding earthworks and drainage. Clients sign one subcontract with Rospower and we manage the piling specialist on their behalf.

What is a piling working platform and who is responsible for it?

A piling working platform is the engineered surface that supports the piling rig safely during operations. It is normally designed and constructed by the groundworks contractor, not the piling subcontractor, to BRE BR470 and Federation of Piling Specialists guidance, and certified in writing before the rig arrives. Rospower designs, builds, and certifies piling mats as part of our piled scheme packages.

Why developers and main contractors choose Rospower for piled schemes

One contract, one programme: A single subcontract covering piling, pile caps, ground beams, slabs, and surrounding civils, with one programme bar covering the whole foundation sequence
Established piling partner network: Long-standing working relationships with vetted UK piling subcontractors let us tender competitively and bring in the right partner for each site’s ground conditions
No interface risk: The mat, the rig handover, the pile head preparation, and the pile cap construction all sit with us, with no finger-pointing between the civils contractor and the piler when something does not align
Programme certainty: We know how long each piling method takes on site, what risks tend to delay rigs, and how to recover programme through follow-on civils
Quality and compliance: All working platforms designed and certified to Federation of Piling Specialists and BRE standards, with full CDM 2015 compliance under our principal contractor or principal subcontractor role

Where we deliver piled groundworks

We deliver piled groundworks across London, the South East, and the wider UK. Recent piled schemes include warehouse and industrial estates across the Heathrow logistics corridor, food and manufacturing facilities, and renewable energy projects. From our Buckinghamshire headquarters we mobilise piling and civils teams nationally for established main contractor and developer clients.

Piling & deep foundations