When a wall needs replacing
- Rotting timbers: soft, crumbling or split railroad ties or landscape timbers.
- Leaning along the whole length, not just one spot.
- No real base or drainage: common with older walls built decades ago.
- Repeated repairs that keep failing in the same place.
- Partial collapse or a wall holding up something important, like a driveway.
What a rebuild involves
The old wall comes out, along with the soil right behind it. The crew digs a proper trench for the base, packs in gravel, sets the first course level and builds up, adding a perforated drain pipe and clean stone behind the wall as they go. Taller walls may get grid reinforcement layered into the soil. Finally the soil is put back, the top is graded so water runs away from the wall, and the site is cleaned up.
Related: retaining wall repair and drainage behind the wall.