Drain descaling typically involves mechanical or high-pressure water jetting techniques designed to chip away and flush out hardened deposits. First, a CCTV drain inspection may be conducted to assess the extent of the scale buildup and determine the most suitable approach. If mechanical descaling is chosen, a rotating head or cutter is attached to a flexible rod or hose, scraping the interior pipe walls to loosen stubborn material. When using high-pressure jetting, specialised nozzles deliver a focused water stream that blasts and dislodges scale without damaging the pipe. In both methods, the dislodged debris is then flushed through the system. After descaling, a follow-up CCTV inspection often confirms the improvement, ensuring that blockages or problematic scale patches have been cleared. By carefully selecting the right tools and pressure levels, professionals minimise the risk of damaging older or more fragile pipe materials while effectively restoring flow.