I want to install some kind of drainage system to an external wall as the damp course is below ground level and causing a prob.
What product is best to buy....channel drainage like they use by swimming pools ok?
The DPC, should definately NOT be below ground level. Your best bet would be to create a french drain along the wall line. This is not the ideal solution though. You should really endevour to re-landscape your garden to get the DPC back above ground level by at least 150mm.
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