Which trees typically need a root barrier?
Trees with aggressive, shallow root systems pose the greatest risk. Figs, liquidambars, camphor laurels, and many eucalyptus species are common culprits on Sydney properties. If a tree sits within a few metres of a building foundation, driveway, retaining wall, or underground pipe, a site assessment will confirm whether a barrier is the right approach.
Root barriers work best when they’re installed early – once roots have reached a structure, the damage conversation changes entirely.
Joseph Khoury, Director & Founder, Trees Down Under
How long do root barriers last, and do they harm the tree?
Quality HDPE root barriers are rated to last 50 years or more under normal soil conditions. Installed correctly, a barrier redirects root growth downward rather than blocking it entirely, so the tree continues to thrive while your infrastructure stays protected. Our arborists assess root structure before installation to make sure the tree’s health is not compromised.
Can barriers be installed around existing trees, and what about council permits?
Yes – root barriers can be retrofitted around established trees, though the work requires careful excavation to avoid damaging major roots. Some species are protected under local council regulations, which may affect what work can be carried out. Trees Down Under handles council compliance as part of the process. Call 0475 463 597 any time to arrange a free inspection and same-day quote.
