Building near protected trees presents significant challenges for developers, contractors, and homeowners. Strict planning regulations, including Tree Preservation Orders (TPOs) and Root Protection Areas (RPAs), limit the use of traditional foundation methods due to the risk of damaging tree roots and surrounding soil structure.
RADIX Ground Screws provide a low-impact, no-dig foundation solution, specifically suited for construction within sensitive tree environments. By minimising excavation and preserving soil integrity, ground screws enable compliant and efficient development in areas where conventional foundations often fail.
Our teams can conduct site-specific surveys and ground tests for any project. We typically require these tests for larger buildings or where planning requires the detailed specification of ground screw foundations.
Unlike traditional concrete foundations that require trenching and bulk excavation, RADIX Ground Screws are installed using a rotational torque method, significantly reducing disruption to:
This makes them ideal for use within Root Protection Areas (RPAs), where maintaining soil health is critical to tree survival.
RADIX Ground Screws have a small physical footprint, allowing installation in confined or restricted areas where space is limited.
Using:
…ensures that both:
are protected as far as reasonably practicable.
Ground screws are widely recognised as a true “no-dig” foundation solution, making them particularly suitable for projects where excavation is restricted or prohibited.
This aligns with best practices outlined in BS5837:2012,
which promotes non-invasive construction techniques within RPAs.
Unlike concrete foundations, which require curing time, RADIX Ground Screws provide instant load-bearing capacity.
This allows:
RADIX Ground Screws are available in a range of lengths and configurations, allowing:
This flexibility supports site-specific foundation design, particularly important in tree-sensitive areas.
Ground screws are a low-carbon alternative to concrete foundations, offering:
This makes them a sustainable choice for projects requiring environmental compliance and long-term tree protection.
The combination of:
…results in significantly reduced disruption to:
RADIX Ground Screws are particularly suited to:
They are widely recognised as a low-impact foundation solution for construction within RPAs and TPO-regulated sites.
Building within Tree Preservation Order (TPO) areas and Root Protection Areas (RPAs) requires a careful balance between structural performance and environmental responsibility.
RADIX Ground Screws provide a proven, low-impact foundation solution that:
By combining engineering performance with environmental sensitivity, RADIX helps unlock development potential on constrained sites while ensuring compliance with tree protection regulations.
Explore a few of our past projects which show how low-impact ground screw foundations can help unlock development where conventional methods may struggle.
Speak to No More Digging early to explore a compliant, low-impact foundation solution tailored to your site.
Yes — screw piles can be installed within a Tree Preservation Order (TPO) area, provided all works comply with planning conditions and arboricultural guidance.
Due to their low-impact, no-dig installation method, screw piles are often the preferred foundation solution for construction near protected trees.
When correctly designed and installed, screw piles significantly reduce the risk of root damage by:
This makes them particularly suitable for Root Protection Areas (RPAs).
Yes. Works within the Root Protection Area (RPA) of a protected tree typically require approval under a
Tree Preservation Order and local planning conditions.
Approval is usually supported by an Arboricultural Impact Assessment (AIA) and Method Statement (AMS).
Root avoidance is achieved through:
Yes — screw piles are installed using a rotational torque method, eliminating the need for trenching or mass excavation.
This makes them ideal for “no-dig” construction within sensitive tree environments.
If roots are encountered:
No significant roots should be cut without prior approval.
Yes — screw piles perform well in clay soils, but design must consider:
A site-specific design ensures long-term stability.
In many cases, yes — particularly when working within RPAs.
Arboricultural supervision ensures:
A Tree Preservation Order (TPO) is a legal protection placed on trees by a local authority to prevent:
Consent is required before carrying out any works that may affect a protected tree.
You can check by:
A Root Protection Area (RPA) is the minimum area around a tree that must be protected to safeguard its root system, as defined in
BS5837:2012.
It is typically calculated based on the tree’s trunk diameter and represents a no-dig zone unless special methods are used.
Screw piles are often preferred because they:
This makes them ideal for extensions, garden rooms, and structures near protected trees.
Yes — but only with:
Each case must be assessed individually.
A no-dig foundation is a construction method that:
Screw piles are one of the most effective no-dig solutions available.
Installation depends on:
A site-specific design ensures roots are protected while achieving structural requirements
No — when properly designed and installed, screw piles:
This helps maintain long-term tree stability.
