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Retaining Wall Drainage: What Toronto Homeowners Should Know
A retaining wall must manage soil and water together; appearance alone is not enough.
Water pressure changes the load
Saturated soil can add significant pressure behind a wall. Drainage aggregate and a reliable outlet are core parts of the system.
Surface water still matters
Downspouts, patios and upper grades should not discharge uncontrolled water behind the wall. The surrounding site plan needs to support the wall detail.
Know when design input is required
Height, surcharge, property lines, slopes and nearby structures can increase complexity. Professional design or municipal review may be appropriate before construction.
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