Water trapped behind the sleepers
- Cause
- Rain soaks into the soil behind the wall and has no way out.
- Why it matters
- Wet soil is heavy, and the extra pressure can push a wall out of line.
- Our solution
- Manufacturer Austral Masonry sets out a drainage detail with ag pipe at the wall's base and gravel backfill behind the sleepers. Filter fabric keeps soil out of that gravel. Our agricultural drain pipe and geotextile blanket match that setup.
- Prevention / next step
- Tick off pipe and fabric while you're ordering sleepers, and nothing gets forgotten when the trench is open.
Signs to watch for:
- Damp patches on the sleeper face
- Wall leaning forward
- Soggy lawn above the wall




