Prime Piling

Hollow Stem Piling

We are one of the top construction services companies in the UK

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SFA Open Bore Piling

Hollow Stem Piling In Essex & London

We are one of the top construction services companies in the UK. Our expert engineers and construction workers can provide all construction-related services including groundworks, underpinning, foundation building, and many more. We provide the best prices in the UK for construction activities. We are fully licensed for providing these services and are well aware of government regulations. Our engineers have completed countless projects that involve hollow stem Piling. Contact us today for our cost-efficient services.

Both these Hollow stem pile techniques are based on the same principle. CFA Piling involves soil extraction through auger boring followed by pumping concrete under high pressure. The replacement pile is created by an auger (helical screw) along with boring a hollow stem into the soil according to the design depth. Fluid concrete is pumped through the auger’s hollow stem and delivered the concrete to the pile bore’s bottom. SFA piling also uses the same technique but uses grout instead of concrete.


Our Services

Mini Piling

Prime Piling has built up to become one of the best Mini Piled Underpinning service providers.

SFA Open Piling

SFA piling is an ideal solution for building with limited access.

SCD Piling

SCD (Steel Cased Driven) Piling is a bottom-driven piling using a vibrating mole or a drop hammer piling rig

Need some help with your project?

With over 20 years of experience and knowledge we offer a complete package with all foundation work, including design, drawings and calculations.

jack topping
jack topping
I found Prime Pilling one of the best companies to do business with. They are polite, efficient, thorough and very competent indeed. It was a pleasure to do business with them and I recommend them unreservedly. Emmanuel
Paul Hastwell
Paul Hastwell
The prime piling team were excellent - leveraging their expertise to manage the complexities of the site and working round the the poor foundations of the existing building. Great level of service, soup to nuts - fundamental activities (e.g. shuttering) were included and not an added extra as some other people had quoted. highly recommended!
Chris James
Chris James
Prime piling have just finished working for us- I had zero experience or knowledge of them or Piling before - They arrived on schedule & explained what was required and just got on with it. Despite finding some inevitable problems in an awkward location, Jamie and his guys swept them aside in a very professional manner. They left the site in good order every night and always consulted with us on best and cost effective option. I will definitely be using them again and we are very comfortable to leave a review and / or recommend to others. A 5 star company......
harry adams
harry adams
Very friendly and efficient. Completed the job in the estimated time frame given, even with multiple obstacles being thrown at them. Turning up through terrible weather. Tidying up every day. Can’t fault the service at all.
Anne-Sophie Gossan
Anne-Sophie Gossan
We used Prime Piling for our extension. We have found them extremely reliable, thorough and professional. They came when they said they would come, finished when they said they would finish and did the work to a high standard which was approved by the building controller.
Prime Piling were great on the job that grew more and more difficult by the day at no fault of their own. Jamie and his team were responsive and kept me up to date throughout the project even offering me help and advice. Would definitely use them again and recommend them to others.
Vincenzo Palmieri
Vincenzo Palmieri
We found Jamie and the team to be very experienced professionals in the groundwork/piling services. It took us some time to find reliable company and we were not disappointed with our choice. Initially, we had a wrong evaluation by the appointed structural engineers and Jaimie managed to find a solution without delaying our project. Very professional, calm, reliable.
Alex Gibbard
Alex Gibbard
Jamie and Kieran were fantastic. Jamie kept us informed during the project and the workmanship was great. I wish I had been in contact with Jamie earlier in the process, as he’s keen to keep the costs down, especially during the design phase with the engineer. I would highly recommend getting in touch with Jamie and Samantha for your piling and job.
David Lewis
David Lewis
After an initial inspection the quotation was agreed. The engineers commenced the work on the due date on time and performed the job in a clean professional and helpful way. I was impressed by their attention to detail and their willingness to adapt if and when needed. I would have absolutely delight in recommending this company for piling work again and if you need a reference you may contact me though them.

Our Recent Work


Common uses of Hollow Stem Piling

  • For providing structural support
  • For providing earth retention, at site boundaries and adjacent buildings
  • Hollow stem piles are highly effective in the Prevention of landslides and the protection of existing buildings
  • Highly effective for the construction of bridges, roads, and tunnels
  • Commonly used where soil quality is extremely poor

Advantages of Hollow stem Piles:

  • Resists lateral, compressive, and uplift loads
  • Continuous operation enables faster installation than other methods
  • Highly cost-efficient
  • Suitable for several types of soils including soft rock, gravel, clay, and sand
  • Low vibration and noise make it the most suitable method for populated areas
  • They possess high shear, moment capacity, and load-bearing
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Prime Piling

Cost of Hollow Stem Piling?

The cost of hollow stem piling depends on

  • Type of piling required
  • Required quantity of piles
  • Required Depth of the piles
  • The type of floor slabs

Set-up and mobilization costs vary with the size, type, and required depth for piling. It may also vary depending on the size and type of machinery being used. Site investigation and site clearance (if required) will cost you an additional amount of money. For Larger projects, a borehole investigation of the site may be necessary, which will add to the total cost.

Snapshot of our services:

The entire process may vary from case to case, however, the usual process of hollow stem piling will consist of the following steps:

A detailed site analysis will be carried out to identify the type of soil and soil conditions such as Load bearing capacity, moisture content, etc.

The site analysis will also include the identification of all adjacent buildings which may or may not be affected by hollow stem piling

The most suitable foundation method will be identified

Site clearance (if required)

Construction Initiation

Our Quality assurance:

We exercise Close control over the installation process for ensuring top quality pile construction. Our CFA rigs are the latest and are equipped with unmatched instrumentation which monitors all steps of CFA including extraction rate, pile depth, penetration rate, auger rotation, concreting pressure, and others.

Skilled Team:

We have the most well-trained civil engineers, geotechnical engineers, architects, and other technicians. Our operatives are fully aware of the applicable building regulations that govern construction activities such as hollow stem piling. They are also well acquainted with the best industrial practices and are trained to use the latest construction machinery.


Frequently Asked Questions

Piling is the process of inserting structural piles into the ground that will become the base of the building. Piles are required where soil and earth are performing poorly and are used to spread the load of a building and firm the ground. They are a cost-effective approach to combating corrosion and are proven to significantly improve the life expectancy of a structure

The size of the trench depends on the size of the ground beam to be installed. For our typical ground beams to an extension an excavation of 600mm deep and 450mm wide is sufficient. Please ring for advice.

There are a number of reasons it may be: A site investigation has highlighted that the ground is unsuitable and un-useable to a depth of more than 2 metres. Removal costs for the excavation of traditional deep trench foundations are too expensive. Foundation trenches are not stable and health and safety, therefore, becomes an issue. There is a high-water table. Where there are soils such as clay that are likely to swell or shrink excessively depending on the amount of water content.

The job of the pile is to distribute the weight of the structure evenly. They are placed into the ground using a pile driver. Holding the piles perfectly vertical, this machine hammers each structure into the ground and also acts as a crane.

For a typical house extension, the work can take around 2-3 days, depending on the depth driven and services requested. For more complex projects, contact us for a more specific time frame.

Mini piling in Essex and Colchester is a type of specialist piling that incorporates a specific arrangement and number of driven pile and screw pile varieties. It allows for the expansion or extension of a building, while also safeguarding against ground heave and subsidence. Crucially, mini piling is often a cheaper, faster option than traditional deep trench foundations.

Contact us

Speak to one of our team today

07872 591446

Give the team a call

Ducketts wharf, South Street, Bishops Stortford, CM23 3AR