Old Tree Roots Damaging Walkway: Root Barrier vs. Removal

Large old tree roots lifted concrete walk; owner fears house/drain damage. Can cut roots safely?

Root Cutting Limits

• ≤25% root system removable without serious harm.
• Estimate: draw canopy circle; sector cut = % loss.
• House foundations deep—roots rarely damage unless leaks exist.
• Branches rub house before roots hurt foundation.

Solutions

1. Install root barrier along house (trifluralin fabric).
2. If walkway only, grind lifted sections or ramp over roots.
3. Cut roots only if <25% and tree not leaning.

Species and distance matter. Consult arborist for valuable tree.