This drain is one of at least 3 round the house that have needed unblocking. Technique used was to drill a bunch of 10mm holes in the clay pipe to make one larger opening, then I used drain rods to clear the blockage.
This drain is one of at least 3 round the house that have needed unblocking. Technique used was to drill a bunch of 10mm holes in the clay pipe to make one larger opening, then I used drain rods to clear the blockage.