rodding

Rodding is a maintenance technique used to clear obstructions in pipes and drainage systems by inserting and manipulating a rod through the line. In plumbing, rodding is commonly performed with a set of straight metal rods that can be connected to form a long shaft, or with a flexible auger, to reach blockages beyond the trap.

Equipment and method: Manual rodding uses rods with threaded couplings and a crank or handle to push and twist the rod through the pipe. For deeper or tougher blockages, a power rodding machine or electric drill with a drum of rods and a rotating head may be employed. The operator advances the rod while applying steady rotation, breaking up, puncturing, or dislodging the clog, and then withdraws the rod to remove debris. Accessories such as cutting heads, reamers, or curved tips may aid in negotiating bends.

Applications and limitations: Rodding is commonly used to clear hair, grease, soap scum, mineral deposits, and compacted debris in domestic drains, soil stacks, and gutters. It is less effective for solid or collapsed pipes, extensive root intrusion, or long-standing blockages; in such cases more invasive methods or professional assessment may be required.

Safety and maintenance: Wear eye protection; avoid forcing rods to prevent pipe damage; clean and dry rods after use to prevent corrosion; store properly. See also drain snake, plumbing auger.