If foundation work has already been completed, root barriers will assist the remedial piers in performing to their full potential long-term. Trees growing too close to a foundation can dramatically affect the moisture content of the supporting soils within the zone of influence beneath the structure. Root systems extract large quantities of water from underlying soils and result in large volumetric changes in the soils (shrinkage and swelling).
As trees absorb water from the soil, the foundation of the home will settle in unsupported areas. The problems caused by these tree or shrub roots growing too close to the foundation can be resolved by manipulating watering patterns, removal of the tree(s) or installing root barrier(s).
A root barrier is a protective barrier installed in the ground to keep tree and shrub roots from growing into the soil beneath your foundation. That helps stabilize soil moisture in the area your home depends on.
Warning signs include cracks in walls or brick, doors and windows that stick or won’t latch, and gaps or separation around windows, especially if there are large trees or shrubs close to the house. A professional evaluation can confirm whether roots are the cause.
When properly installed, root barriers can delay or even eliminate the need for foundation repairs. Installation matters, which is why this is work for a trained team.
Root barriers are designed to redirect root growth away from structures, not to harm the tree. Whether a barrier is right for a particular tree depends on its size, species, and distance from the home, so a professional evaluation is the best way to decide.
