Build Access Without Damaging Root Zones
Construction near trees often comes with tight limits. Excavation depth is restricted, roots must remain undisturbed and access still needs to support traffic. In many cases, standard dig-and-build methods simply are not suitable. EcoCell provides a practical way to create stable, load-bearing surfaces while protecting tree roots below.
This guide explains how EcoCell works, where it is used and why it is commonly specified for tree protection zones.
Understanding the Root Zone
|
Most tree roots sit close to the surface, typically 150mm to 600mm below ground level. They often spread well beyond the visible canopy, commonly two to four times the diameter of the tree crown. Changes to soil depth, compaction or drainage can quickly stress roots and lead to long-term damage. Traditional construction methods compact soil and restrict airflow, which reduces oxygen and nutrient availability. Once this happens, recovery is slow and sometimes impossible. EcoCell avoids these issues by allowing construction to take place above the root zone without disturbing it. |
 |
Planning and Tree Protection Orders
Many sites fall under Tree Preservation Orders (TPOs) or similar planning conditions. These place legal duties on developers and contractors to avoid damaging protected trees. Excavation, compaction and root severance are common reasons for enforcement action.
Using a no-dig system such as EcoCell helps meet planning conditions by:
-
avoiding excavation within the root protection area
-
limiting changes to soil structure
-
maintaining permeability and gas exchange
Ignoring these requirements can lead to fines and project delays, so early consideration of root protection systems is important.
How EcoCell Works
EcoCell is a cellular confinement system made from interconnected polymer strips. Once expanded and filled with clean angular gravel, it forms a strong load-spreading layer above the soil.
Key points:
-
available in 100mm and 200mm depths
-
filled with gravel to form a stable structure
-
distributes load across a wide area
-
limits pressure transferred to the soil below
Because the cells carry the load, the soil underneath remains loose and biologically active.
EcoCell is commonly used in:
-
tree root protection zones
-
access routes near trees
-
farm tracks
-
slopes and landscaped areas
A non woven geotextile membrane is typically placed below the EcoCell to separate gravel from soil and maintain long-term performance.
Installation Notes
EcoCell is a no-dig solution. In most cases only surface vegetation is removed. The system is laid directly over the prepared ground, expanded, pinned and filled.
Practical tips:
-
always slightly overfill the cells to prevent collapse during trafficking
-
use clean, angular stone for best load transfer
-
avoid compacting the underlying soil
EcoCell can also be combined with EcoGrid to form a fully trafficked, permeable surface. Finishes can include gravel, grass reinforcement or resin-bound stone depending on access requirements.
Benefits of EcoCell
Using EcoCell for tree root protection offers clear advantages:
-
Reduced excavation depth
Raises finished levels without digging into root zones. -
Limits soil compaction
Load is carried by the cell structure, not the soil. -
Maintains oxygen and nutrient flow
Permeable structure supports healthy root conditions. -
Supports planning compliance
Suitable for TPO and environmentally sensitive areas. -
Efficient coverage
Each panel covers a large area, reducing installation time.
|
Using EcoCell for tree root protection offers clear advantages:
|
 |
If you are working near protected trees or shallow root systems, EcoCell provides a reliable way to maintain access while protecting what lies beneath. Share your site details and loading requirements and we can advise on depth, layout and supporting membranes.
