Retaining wall leaning or bulging
Answer: call a landscaper.
A leaning or bulging retaining wall is a structural failure that gets worse with every rain. Water pressure (hydrostatic pressure) builds behind the wall when the drainage system clogs or was never installed, and the weight of saturated soil pushes the wall forward. Other causes include inadequate footing depth, missing or degraded tiebacks/geogrids, frost heave, and tree root pressure. A wall leaning more than 1–2 inches out of plumb is at risk of sudden collapse — especially dangerous on slopes near homes, driveways, or walkways. A landscaper experienced in hardscaping can assess the wall, install or repair French drains behind it, rebuild collapsed sections with proper gravel backfill and drainage fabric, and add deadman anchors or geogrids for long-term stability.
Who to call
For this problem, call a: Landscaper
Symptoms to look for
- Wall visibly leans or bows outward from the slope it retains
- Cracks running horizontally or in a stair-step pattern along mortar joints
- Soil erosion or gaps visible between the top of the wall and the earth behind it
- Water seeping through or pooling at the base of the wall after rain
- Sections of cap stones or blocks have shifted or fallen off