RADIX PRO Ground Screws
Engineered for Performance. Trusted Worldwide. RADIX supplies high performance Ground Screws for customers in the UK and beyond. Our ground screws are engineered and manufactured to the highest of standards, outperforming many products currently being offered on the market.
What is a Ground Screw?
A ground screw is an advanced, low-impact foundation solution that replaces the need for traditional concrete bases. Made from high-grade galvanised steel, ground screws are engineered in various diameters and lengths to provide secure, load-bearing support for a wide range of above-ground structures, from garden rooms and fencing to solar arrays and boardwalks.
Also known as earth screws, ground anchors, or foundation screws, they offer a faster, cleaner, and more sustainable alternative to excavation and wet-trade groundwork. At RADIX, we stand behind the structural integrity of every product we supply. Our ground screws are backed by a 35-year performance guarantee based on typical soil conditions and are engineered for a service life exceeding 60 years.
All screws and brackets are manufactured in accordance with EN ISO 9001:2015 quality management systems and hot-dip galvanised to BS EN ISO 1461:2009 standards for long-term corrosion protection. Need more capacity, check out our Helical Piles or Extendable Screw Pile range of products.
Our PRO Ground Screw Range
A Ground Screw for Every Project
With an extensive range of ground screw sizes in stock, RADIX is ready to support your project , no matter the scale or complexity. Our UK-based warehouses maintain stock levels in excess of 50,000 units, available for immediate dispatch, and we also fulfil international orders with reliable lead times.
Whether you’re anchoring timber structures, modular buildings, solar frames, or bespoke steelwork, our standard brackets and attachments accommodate a wide variety of applications. And for projects requiring something unique, we offer fully customised fabrication to match your exact requirements or why not check out our Helical Pile & Extendable Screw Pile ranges.
Because the foundation is the most critical part of any build, we strongly encourage clients to consult with us during the specification stage. Our experienced team will help you select the most appropriate ground screw solution — ensuring long-term performance, compliance, and structural integrity.
RADIX PRO 76mm Ground Screw
Load Capacity
13.5kN – 45kN*
Available Lengths (mm)
800, 1050, 1250, 1550, 2050
Anchor/Fixings
140mm or 200mm fixed flange with an M16 captive nut
RADIX PRO 89mm Ground Screw
Load Capacity
30kN – 55kN*
Available Lengths (mm)
1300, 1600, 2100
Anchor/Fixings
220mm fixed flange with an M20 captive nut
RADIX PRO 114mm Ground Screw
Load Capacity
35kN – 66kN*
Available Lengths (mm)
1300, 1600, 2100
Anchor/Fixings
220mm fixed flange with an M24 captive nut
N4 76mm Ground Screw
Load Capacity
16.5kN – 35kN*
Available Lengths (mm)
1050, 1250, 1550
Anchor/Fixings
M12 Captive Nuts (4 no.)
N4 89mm Ground Screw
Load Capacity
21kN – 41kN*
Available Lengths (mm)
1100, 1300, 1600
Anchor/Fixings
M12 Captive Nuts (4 no.)
N4 114mm Ground Screw
Load Capacity
25kN – 47.5kN*
Available Lengths (mm)
1100, 1300, 1600
Anchor/Fixings
M12 Captive Nuts (4 no.)
Why Choose Ground Screw Foundations?
Ground screws are rapidly becoming the preferred foundation solution for forward-thinking projects, replacing concrete with a faster, cleaner, and more sustainable approach. By eliminating the need for excavation and curing, they reduce environmental impact, speed up installation, and deliver immediate load-bearing capability.
From small structures to large-scale infrastructure, ground screws and screw piles offer clear advantages:
- Faster Project Delivery
Ground screws install up to 70% faster than concrete foundations, reducing programme times, labour requirements, and overall project costs. Immediate load-bearing capacity means no delays waiting for materials to cure.
- No Excavation, No Spoils
Eliminate the need for digging, spoil removal, and concrete pouring. This saves time, reduces waste, and minimises site disruption, with clear environmental and cost benefits.
- Access Anywhere
Our versatile installation methods make even remote or hard-to-reach sites viable. From off-grid locations to restricted-access urban plots, RADIX screws overcome the logistical challenges that stop other foundation systems.
- Sustainable by Design
With lower embodied carbon than concrete, zero excavation, and minimal ground disturbance, our ground screw foundations are reusable, removable, and fully recyclable, delivering genuine environmental gains without compromising performance.
- All-Weather, All-Terrain Installation
RADIX screws can be installed year-round, in virtually any ground condition, including sloping, uneven, and soft soils, helping you avoid costly weather-related delays.
Why Choose a RADIX Ground Screw?
RADIX Ground Screws offer a smarter, faster, and more sustainable alternative to concrete foundations. From reduced embodied carbon to zero excavation and minimal site disruption, our system is designed to support modern construction with lower environmental impact. But sustainability is only part of the story. We combine technical precision with unrivalled product quality, dependable UK and international supply, and expert customer service, all backed by a 35-year performance guarantee and a lifespan exceeding 60 years.
We take pride in what we deliver, but we prefer to let our customers speak for themselves.
All we have is good things to say. Everything from project planning, analysis, advice and installation is in place with RADIX. It isn’t easy to find good partners in any industry, so having one here that goes beyond the parameters of expectation is incredible.
Ross Iwaniec
Urbanpods
RADIX is fantastic to work with. Since partnering with them for all our equipment and ground screw supplies, communication has been seamless and support has been exceptional. They’re always ready to offer expert advice, and their turnaround on urgent deliveries is impressively fast.
Christopher Taylor
Director, North Country Cabins
We source all our ground screws and installation equipment directly from RADIX for our building projects here in Sweden. Their product quality, technical support, and reliability make them our preferred supplier, and in our view, RADIX sets the standard for ground screw solutions in the UK and internationally.
Erik Janehall
CEO, Skrufund
As a garden room design-and-build company and ground screw installer, we’ve worked with other suppliers, but we chose RADIX for their outstanding range and quality. Their ground screws are exceptional, and their installation equipment is equally first-class.
Nick
B2B Customer, Trustpilot
Proven Strength, Certified Quality
At RADIX, our ground screws are subject to rigorous quality control and independent testing to ensure it meets the highest standards for strength, durability, and long-term performance. We don’t just make claims, we provide the technical data to prove them. In an industry where not all products are created equal, choosing unverified or poorly manufactured screws can jeopardise your project from the ground up. That’s why we encourage engineers, contractors, and procurement teams to ask for the evidence, and why we’re proud to provide it.
AWhen it comes to foundations, there’s no room for compromise. Trust products with proven performance, trust RADIX.
Ground Screw Installations
At RADIX, we deliver precision-engineered ground screw installations for commercial, industrial, and infrastructure projects across the UK and internationally. From initial consultation through to foundation handover, we work closely with contractors, engineers, and project managers to ensure every detail meets specification.
For commercial projects, our process begins with a detailed site assessment, including surveys, load testing, and engineering calculations, to provide empirical evidence of the most suitable screw type and configuration. This ensures structural integrity, compliance, and long-term performance.
On installation day, our experienced team prepares the site, pre-drills where required, and uses advanced ground screw machinery for rapid, accurate placement. The result is a highly efficient process that delivers instant load-bearing foundations ready to support your structure immediately. For private or domestic projects, we recommend working with our trusted No More Digging Approved Installer Network, offering the same quality products and installation expertise, delivered by trained local professionals.
What Can Be Built on Ground Screw Foundations?
Ground screws are a versatile foundation solution suitable for a vast range of structures, fixtures, and buildings. While some projects, such as high-rise apartment blocks, heavy industrial plant, or ultra-high-load infrastructure may require Helical Pile foundations, ground screws are ideal for most light-weight timber frame builds for both private and commercial applications.
From SIP buildings, temporary offices and classrooms, and playground equipment to fencing, decking, solar arrays, and much more, the possibilities are extensive.
Every project is unique, which is why we recommend speaking with our team early in your planning process. We’ll evaluate your requirements, carry out any necessary surveys or testing, and confirm whether ground screw foundations are the optimal solution for your build, or if Extendable Screw Piles or RADIX Helical Piles would be better suited.
Ground Screw Costs
The cost of a ground screw depends on several factors, including its design, length, diameter, coating specification, and load-bearing capacity. Installation method, site conditions, and any additional attachments or brackets may also influence the overall price. At RADIX, we don’t believe in one-size-fits-all pricing. Every project is different, which is why we provide tailored recommendations based on detailed project information, site surveys, and engineering requirements. This ensures you get the most cost-effective solution without compromising performance or longevity.
Why Not Choose Purely on Price? While lower-cost alternatives may seem attractive initially, they often lack the material quality, protective coatings, and engineering precision required for long-term durability. Choosing on price alone can result in higher maintenance costs, reduced lifespan, and even structural failure. At RADIX, we focus on delivering true lifetime value – with ground screws designed to perform for decades. Contact our team to discuss your project in detail. We’ll evaluate your requirements, help you choose the most suitable ground screw specification, and provide an exact quotation for both supply-only and full installation options if required.
Why Build on Concrete When Ground Screw Foundations are Available?
Concrete is no longer the default choice for many modern projects. RADIX’s low-carbon ground screw foundations offer a smarter alternative – faster and simpler to install, more sustainable, and often more cost-effective over the life of a project. Our systems are durable, climate-friendly, and eliminate the time and disruption associated with concrete works. No extensive ground preparation. No deep excavations. No casting and curing delays. With RADIX, you simply drive the screws into place, fix your structure, and the foundation is ready, often in a fraction of the time. For contractors, developers, and engineers looking to save time, reduce environmental impact, and maintain structural integrity, ground screws are the intelligent choice.
RADIX - A Leading Global Supplier of Ground Screw Foundations to Businesses Worldwide
As the UK’s largest manufacturer, stockist, and supplier of sustainable ground screw foundations, RADIX partners with businesses on projects of all sizes, across the UK and internationally.
Our clients span a wide range of sectors, from garden room specialists and housebuilders to renewable energy developers, local joiners, and large-scale contractors. Whatever your industry, if your project can benefit from faster, cleaner, and more sustainable foundations, we’re here to help.
Whether you need supply-only ground screws, installation equipment, testing kits, or a complete tailor-made starter package, we can provide a solution that fits your requirements.
Our mission is simple – to make your job easier, deliver measurable value, and support your business with high-performance products backed by expert technical advice.
We Have Ground Screw Attachments for Every Application
Whatever you are building, we will help you choose the best type of screw and attachment that you will need to secure your structure. Beam brackets, post brackets, L-supports amongst others, and if you need a bespoke attachment, we can manufacture it for you.
Our screws can be used to anchor decking, sheds, garden and security fences, flagpoles, noise barriers, ground-mounted solar panels, and so much more.
Ground screw FAQ
Whatever you are building will have its unique requirements when it comes to the foundations. Our question and answers section can give you more information, but if you don’t find the answer, please contact us.
Are ground screw foundations as good as concrete?
The main obstacle for screws overtaking concrete in many foundation projects, is simply because they are new and concrete is what builders are used to. This needs to change!
Our range of screws presents a compelling and practical substitute for concrete foundations, offering numerous strong advantages, especially in sustainable construction.
5 advantages of over concrete:
- Installation Speed: Screws can be installed much faster than concrete, which requires time for pouring and curing.
- Environmental Impact: Screws are less invasive and have a lower environmental impact compared to concrete foundations, as they don’t require extensive digging or soil displacement.
- Removability and Reusability: Unlike concrete, a ground screw can be easily removed and reused, making them a more flexible option for temporary or relocatable structures.
- Load-Bearing Capacity: High-quality ground screw foundations have strong load-bearing capacities, comparable to traditional concrete foundations.
- Cost-Effectiveness: In many cases, screws can be more cost-effective due to reduced labour and time.
Please remember, the suitability of earth screws versus concrete depends on the specific requirements of your project, including soil type, load requirements, and environmental conditions. For certain heavy-duty applications, concrete might still be the preferred choice.
Is a ground screw expensive?
The cost of a screw depends on which one you choose, and how many you need, depending on your projects requirements. When compared to other screws on the market, we believe RADIX offers superior quality and value.
What is the load capacity of a ground screw?
RADIX PRO screws will range from 13.5kN to 66kN in load-bearing capacity.
All our screws are thoroughly tested to meet load, pressure and tension-bearing requirements. Our installation teams test the ground and do our calculations based on the structure the screw will be supporting. The total load capacity of the structure is spread through several screws. Contact us directly about the needs of your project.
How deep can a ground screw be installed?
The overall weight of your project and the ground conditions determine how deep a ground screw needs to be installed. Our screws come in lengths from 800mm to 2050mm, to be able to create strong and stable foundations in most soil types and for a wide variety of projects.
If we need to go deeper we can use our screw pile range to deliver your required project calculations. Please contact us to evaluate your project and help you choose the best screws for whatever you want to build.
Can you install a ground screw in frozen ground?
An advantage of using our foundation systems compared to concrete, is not only the speed, efficiency and overall cost of installing them, but also in the fact that we can install them during the winter months even in frosted ground.
Please contact us to evaluate your project and give you a quote. Our range of screws is specifically designed to work in a variety of terrains, climates and soil conditions.
Can you use ground screws in all types of surfaces?
RADIX’s low-carbon foundations are versatile, and they can be used in a variety of surfaces. Accurate site surveys, ground testing and load testing should be carried out to help choose the right screws for your project.
- Soft Soils: Our screws work well in various soft soil types, including clay, silt, and loam, where they can easily penetrate and provide stable anchorage.
- Grassy or Unpaved Areas: They are ideal for installations in grassy fields, gardens, or other unpaved surfaces.
- Rocky or Very Hard Soils: In rocky terrains or extremely hard soils, pre-drilling might be necessary.
- Waterlogged or Marshy Areas: These conditions may require special consideration for stability and longevity, which our range of screws can provide.
- Highly Urbanised or Paved Areas: Installation into concrete or asphalt surfaces may require pre-drilling
What is the typical price of a ground screw?
The price depends on which screws your structure requires. Unlike other companies who just promote their range of screws based on price, we want to make sure you are using the correct screw for your particular project, while getting value and a cost-effective solution. Please be careful and don’t just buy cheap screws from a ground screw shop or online store, as they may lead to a problem with your structures integrity.
How secure are ground screw foundations?
RADIX’s comprehensive range of foundation screws range are built to the highest standards, going through a rigorous testing and examination process. Once the correct screws are installed by our accredited and experienced installation teams, they will provide long-lasting, secure and stable foundations for your project.
What can a ground screw be used for?
Our foundation screws can be used for virtually any structure or fixture that needs to be anchored to the ground. From a house to a carport or small fence, a solar array or large scale battery energy storage system project, RADIX’s screw foundations are the best option.
Go to our applications page and see all the different things that can be build on top of our low-carbon foundations. (It is advisable to test the ground and factor in other key data, to make sure you are choosing the correct ground anchors for your foundations.)
How long does a ground screw last?
Depending on soil conditions and the quality of the installation, our range of screws have an expected lifespan of 60+ years, and all come with a 35-year structural integrity guarantee.
What are ground screw foundations made from?
There are many poor quality screws on the market, so it is imperative you choose a leading brand for your foundations. Look for the empirical data, engineers reports and other key technical information that proves the quality of the brand and their products.
The range of screws available in stores may serve a purpose for smaller projects but once again be aware of what they are capable of and choose a higher quality and more robust range that is suited for your application.
Our range of screws are manufactured from high quality steel and galvanised to BS EN ISO 1461: 2009 to ensure the surface of the screw is corrosion resistant for long term protection and increased life expectancy.
Can you install ground screw foundations all year round?
Yes. Our foundations can be installed year-round, but there are some seasonal considerations to keep in mind:
- Winter Conditions: In areas with severe winter weather, frozen or snow-covered ground can make installation more challenging. Specialised equipment or pre-drilling may be required to penetrate the frozen soil.
- Wet Conditions: During rainy seasons or in wet climates, the soil may be softer or waterlogged, which could affect the stability and installation process of the screws. Proper assessment and techniques are needed to ensure a secure installation.
- Summer and Dry Conditions: In contrast, during dry seasons or in arid regions, the ground may be harder, requiring more effort or different equipment to install the screws effectively.
- Professional Assessment: Regardless of the season, a professional assessment of the soil and environmental conditions is crucial to determine the best installation approach.
Overall, while seasonal variations can present certain challenges, with proper planning and equipment, installations can be successfully carried out in most weather and seasonal conditions. This is a stark contrast to concrete foundations, which is highly limited and not possible in certain conditions.
Can you install a ground screw through tarmac?
Yes, screws can be installed through tarmac!
- Pre-Drilling: A hole must first be drilled through the tarmac to accommodate the screw. This ensures a clean insertion and minimises damage to the surrounding tarmac.
- Appropriate Equipment: Using the right drilling equipment is crucial to penetrate the tarmac effectively without causing excessive damage or wear to the drill bit.
- Installation Care: Care must be taken during installation to ensure the ground anchor is properly aligned and inserted at the correct angle and depth.
- Assessing Underlying Soil: It’s important to assess the soil beneath the tarmac to ensure it can provide sufficient support and stability.
- Professional Installation: Due to the complexities involved, professional installation is recommended to ensure the foundations are installed correctly and safely.
Are ground screw foundations better than concrete piers from a sustainability point?
From a sustainability perspective, ground screw foundations often have advantages over concrete piers:
- Lower Environmental Impact: Screws are less invasive to the soil, as they don’t require extensive excavation or concrete pouring. This reduces the disturbance to the local ecosystem and soil structure. The machinery used does not damage the surrounding landscapes and with no excavation there is no soil removal. Professional installations can easily navigate tree roots and other obstacles.
- Reduced Carbon Footprint: The production of concrete is energy-intensive and generates significant CO2 emissions. By avoiding concrete, screw foundations contribute to a lower carbon footprint. They have less embodied carbon than concrete alternatives.
- Reusability and Removability: Ground screw anchors can be removed and reused, offering a sustainable option for temporary structures or when changes are needed. This contrasts with concrete piers, which are permanent and create waste if removed.
- Less Resource Intensive: The installation of our foundations typically requires less machinery and energy compared to digging and setting concrete piers.
- No Water Usage: Concrete piers require water for mixing concrete, whereas our foundations do not, reducing water usage.
- Immediate Usability: Ground screw foundations are ready for use immediately after installation, unlike concrete, which requires time to cure. This efficiency reduces the overall environmental impact of construction projects.
While our range of screws offer these sustainability benefits, the best choice for your foundations depends on the specific requirements of the project, including load-bearing needs, soil conditions, and long-term objectives.
Grounding screw, ground anchor, earth screw, foundation screw, ground screw – what's the difference?
The name is all that is different, as they all do the same thing. However, be very careful with what you buy, as you are using these devices for foundations, and you cannot risk collapse or structural damage.
When choosing a screw or anchor for your foundation, it’s the brand that matters. Low-cost ground screws, anchor spikes, and ground anchors are not the same as our pro-range ground screws.
RADIX’s ground screws have gone through many changes over the years. We have redesigned them, sourced better materials and manufacturing processes to value-engineer the strongest and most reliable ground screw available.
Our prices are competitive and excellent value whilst being superior in quality.
Our screws can never be compared to the low-quality ground screws that you may find in a typical ground screw store.
Do ground screws work?
Our range of screws not only work better than other types of foundations, they are faster to install, more eco-friendly, and deliver a more cost-effective solution. See all the advantages of ground screws and screw piles if you require further reassurance.