Does anybody know about french drains?
We are in the process of getting our drive blockpaved. The builder has found what he calls a french drain at the bottom of our drive which slopes down towards the road. At first he thought it was a damaged water pipe and i duly asked the local authority to investigate - he now seems to think its not a problem and plans on block paving directly over it. We are concerned. Is he fobbing us off? Please help if anybody can!