Retaining-Wall Bases
Drain behind your wall so it keeps holding.
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Retaining-Wall Bases
Water that drains instead of pushing on the wall
Based on your answers, here's what we'd use
Washed Drain Rock - 3/4"
Rounded washed stone that drains freely and doesn't hold moisture against the wall.
We recommend about 12″ deep — the usual width of drainage rock behind a wall
Soil packed straight against the back of a wall holds water, and that water is weight the wall has to carry.
Why this material
- Water moves through the gaps
- Does not hold moisture against the wall
- Takes the water weight off the wall
- Rounded, washed stone with no fines in it
A column of washed rock behind the wall gives water somewhere to go, so it drains away rather than building up behind the stone.
Other materials that also work
Tap one to see what makes it different.