Trees add beauty, shade, and environmental benefits to both residential and commercial properties. However, when planted too close to structures, their roots can become a hidden threat. That’s where a tree root barrier membrane becomes a practical and long-term solution—especially around driveways and buildings.
What Is a Tree Root Barrier Membrane?
A tree root barrier membrane is a heavy-duty underground barrier designed by arborist services Coolaroo to redirect tree roots away from specific areas. Made from durable materials such as high-density polyethylene (HDPE) or geotextile fabric, it acts as a physical shield, preventing root intrusion into areas where they can cause structural damage.
When Should You Use One?
- Driveways and Paths
Tree roots frequently grow slightly below the surface in quest of moisture. Over time, they can lift or crack concrete driveways, causing uneven surfaces and trip hazards. A root barrier placed between the tree and the driveway helps redirect root growth downward or sideways, away from the hardscape.
- Building Foundations
Roots that grow too close to building footings can lead to soil movement, especially in clay soils that shrink and swell with moisture changes. This may cause foundations to move or break. Installing a membrane before or during construction can prevent costly repairs in the future.
- Underground Services and Utilities
Roots can also interfere with water pipes, stormwater systems, and sewage lines. Using a tree root barrier can protect these underground assets from being blocked or damaged.
Key Considerations Before Installation
- Depth: Ensure the barrier is deep enough (typically 600mm–1.2m) depending on the tree species and root behaviour.
- Distance from Tree: The closer the barrier is to the tree, the more it can affect tree health. Position it at a distance that protects infrastructure while allowing the tree to thrive.
- Professional Advice: Consult with an arborist or landscape professional to assess the best placement and material for your property.
A tree root barrier membrane is an effective way to preserve both your trees and your infrastructure. Whether you're protecting driveways, foundations, or utility lines, installing the right barrier at the right time can save you from long-term damage and expensive repairs.