Understand what a channel drain does, when you need one and how to plan a complete system.
A channel drain is a long, narrow drainage unit installed at the edge or low point of a paved surface. Water enters through a grate or slot and travels along the channel to an outlet. It collects surface water; the outlet still needs a suitable place to discharge it.
Linear drain, drainage channel and channel drain usually describe the same type of surface-water collection system. A slot drain is a version with a narrow opening at the surface. Compare the body, grate, dimensions, loading and fittings rather than relying on the name alone.
A channel drain intercepts water running across a hard surface, such as paving. A French drain usually uses a gravel-filled trench and perforated pipe to intercept water in the ground. The right choice depends on where the water comes from and where it can drain.
Only if water can reach the channel and leave through a working outlet. Check paving levels, the catchment area, discharge route and any blockage first. A drain installed above a low spot, or connected to an undersized or blocked outlet, will not remove the underlying problem.
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