Cutting a channel in concrete to keep damp away from DPC

FloPlast FloDrain Channel Drain & Grate Black 115mm x 1m slot drainage channel screwfix Drainage Channels · 1m Plastic Drainage Slot Channel · Drainage Channel with Galvanised Grid slot doddendael bruiloft Channel drainage is used to remove surface water from large areas like driveways and patios to prevent flooding They're made up of an enclosed channel with

slot major I went with bielbet slot drain, and although being a bit wangy It was cheaper than the screwfix stuff, and much more so than aco