Drainage for Parking Garages & Parkades — Lower Mainland BC

Parkade drainage means ramp trench drains, slab area drains, oil-water separators, and duplex sump systems with alarms and backup power.

Why parking garages need this work

Drainage work moves water away from the building and off the property. On Lower Mainland lots — clay soils in Surrey, delta silt in Richmond and Delta, slopes in Coquitlam and Port Moody — the right system depends entirely on where the water comes from and where it can legally go.

Ramp and entry flooding

Undersized or blocked ramp trench drains let street and roof runoff pour down into the parkade during heavy rain.

Sump and pump reliability

Duplex pumps, high-water alarms and backup power are what stand between a working parkade and an insurance claim.

Slab and wall leaks

Cracks, cold joints and failing traffic-deck membranes drip onto vehicles and accelerate rebar corrosion.

Drainage scopes of work

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Service areas