Patios, paths and drives are built with a slight slope (or ‘fall’) that lets any surface water drain away. But sometimes, it might not be enough simply to let the water drain onto a lawn or planted bed (particularly if you have a large paved surface or live in an area with heavy clay soil). In these cases you may well need to build a drainage channel to collect the surface water, and direct it to a dispersal point which leads to an existing surface water drain or into a soakaway.

Tools & materials required

expanded, How to create a concrete drainage channel Is your patio draining badly? Or are you laying a new patio or drive? An easy way to create a drainage channel along its edge is by moulding a concrete strip using a length of plastic guttering.

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