Trusted CFA Piling Contractors in London: Strong, Quiet Foundations for Urban Sites
Welcome to KHB Piling LTD, a London-based piling contractor providing engineered foundation solutions across the capital and the surrounding areas. We specialise in CFA (Continuous Flight Auger) piling – a low-noise, low-vibration technique that is particularly well suited to London’s dense, built-up locations. Whether you are delivering a residential extension, a basement or a multi-unit scheme, our aim is the same: a cleanly installed, fully recorded pile that Building Control can sign off without delay.
As an experienced piling contractor in London, we understand local ground conditions – from London Clay to mixed fill and terrace gravels – and we match the piling method to the site. Our teams work with architects, main contractors and private clients, supplying foundations that are dependable, compliant and ready for the superstructure.
What is CFA piling – and why is it used so much in London?
CFA (Continuous Flight Auger) piling is a bored piling method in which a continuous auger drills to depth and concrete is pumped through the hollow stem as the auger is withdrawn. Because the soil is supported throughout the operation, the bore does not collapse and there is very little disturbance to adjacent properties. Reinforcement is placed immediately afterwards into the fresh concrete.
This approach is ideal for London’s constrained sites because:
- it keeps noise and vibration to a minimum;
- it reduces spoil handling on site;
- it gives a uniform, in-situ pile with good load-bearing capacity.
It is therefore a sensible choice near party walls, busy streets, schools, hospitals or fully occupied residential areas where disruption must be kept low.
How we install CFA piles – our step-by-step method
At KHB Piling LTD we follow a controlled, UK-standard process:
- Site and ground review: we look at access, headroom, drawings and any ground investigation so the pile diameter, depth and reinforcement suit the structure.
- Continuous drilling: a CFA rig drills to the designed depth in one operation, supporting the ground with the auger flights.
- Concrete placement: as the auger comes out, high-quality concrete is pumped in under pressure through the hollow stem, forming the pile from the base upwards.
- Reinforcement installation and records: steel cages are placed while the concrete is still workable. We retain piling logs so your engineer and Building Control have a full record.
This sequence gives a pile that is to depth, to line and to the specified volume of concrete.
Why CFA piling suits London projects
CFA piling is widely specified in the capital because it brings a number of practical benefits:
- Faster programmes: once on site, CFA rigs can install a good number of piles per day, helping you stay on programme.
- Cost-aware: as there is no need for permanent casing or extensive spoil removal, overall project costs can be kept under control.
- Quiet and low-vibration: ideal for tight terraces, mews streets and mixed-use buildings where neighbours are in close proximity.
- Works in varied ground: London Clay, made ground and granular bands can all be dealt with using CFA, provided the design allows for it.
- Reduced lorry movements: less excavated material to remove means a tidier, safer site – particularly helpful on narrow London roads.
Our CFA piling service
We provide a complete service, from advice at design stage through to final pour:
- review of drawings and ground investigation;
- recommendation of pile diameters and depths;
- site-specific RAMS and health & safety documentation;
- supply of rig, operator, concrete and cages;
- piling logs for Building Control / the project engineer.
We have installed CFA piles for housing, basements, rear and side extensions, commercial refurbishments and new-build projects across Greater London.
Other foundation services we offer
To support CFA piling we also carry out:
- Mini piling for restricted access or domestic sites;
- Groundworks and ground beams to tie the piles together;
- Basement and substructure works where a deeper formation level is required;
- Project gallery so you can see typical London installations.
Speak to KHB Piling LTD
If you are planning a project and need a piling contractor who is used to London access, London ground and London timescales, we can help. Tell us where the site is, what you are building and whether you already have a soil report – we will advise on whether CFA piling is the right method and provide an estimate.
Contact us today to book a site visit or request a quotation.
