Question 1

What are screw piles and how do they work?

Accepted Answer

Screw piles (also known as helical piles or helical anchors) are steel foundation systems featuring helical plates welded along a central shaft. These are screwed into the ground using compact hydraulic machinery, creating a secure, load-bearing anchor point without the need for excavation. They’re perfect for supporting everything from decks and extensions to full home builds and commercial structures.
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Question 2

How are screw piles different from traditional foundation?

Accepted Answer

Unlike auger cast piles, concrete footings, or driven piles, GoliathTech screw piles in most

cases require no excavation, no curing time, and cause minimal site disruption. They’re installed in hours and can be used immediately.
Key benefits include:
 • Immediate load-bearing capacity
 • Clean, efficient installation—even in confined spaces
 • No mess, no concrete, no waiting
This makes them especially advantageous where properties often have restricted access and sensitive landscaping.
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Question 3

Are screw piles suitable for the soil conditions in the Hertfordshire and surrounding regions?

Accepted Answer

Yes. GoliathTech piles are ideal for challenging soils, which include:
 • High plasticity clays, prone to expansion and contraction—our piles are installed deep enough to reach stable ground
 • Rocky terrain—we use a specialised rock helix to push through rock layers and install safely
 
Our engineering-based approach ensures piles are installed with precision torque monitoring, offering unmatched structural integrity in any local condition.

Question 4

What types of projects can use screw piles?

Accepted Answer

We support all types of foundation projects including:
 • Residential: extensions, decks, patios, garden rooms, sheds
 • Commercial: modular builds, signage, retail units
 • Underpinning and foundation repairs for older buildings
 • Solar panel installations and fencing systems
If it can be built, it can be built on GoliathTech piles.

Question 5

Are your piles compliant with UK building regulations?

Accepted Answer

Absolutely. GoliathTech piles are fully BSI, BBA, CE, and NHBC certified, ensuring compliance with UK structural and safety standards for both residential and commercial applications.
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Question 6

How deep can screw piles be installed?

Accepted Answer

Our piles are installed to precisely calculated depths based on soil conditions and load requirements. That often means going deeper to bypass clay layers or stabilise on bedrock.
Installations can reach up to 25+ metres (80+ feet) if needed.

Question 7

Do I need to prepare my property before installation?

Accepted Answer

No major prep work is needed. Our compact machinery is designed to access tight or sensitive areas without damaging driveways, gardens, or landscaping. It’s a clean, non-invasive process with minimal disruption.

Question 8

How quickly can I get a quote?

Accepted Answer

We provide preliminary estimates within 24 hours of receiving photos, site measurements, or architectural plans.
Once reviewed by our engineer, we’ll provide a stamped and certified quote with full specs and installation details.

Question 9

What are the benefits of galvanised steel piles?

Accepted Answer

Our piles are made from 60 KSI ASTM A500 Grade C steel and hot-dip galvanised for corrosion resistance, which means:
 • Longer lifespan
 • Resistance to rust even in wet or clay-rich soil
 • Maintenance-free durability

Question 10

Can your piles be reused or relocated?

Accepted Answer

Yes. Our piles are a proven solution for stabilising and reinforcing existing structures. Whether you’re dealing with subsidence, cracks, or settling, we can stabilise your building with minimal excavation or demolition.

GoliathTech Hertfordshire

Frequently asked questions