Choose follow-up work from the findings
Clearing an obstruction may restore flow without showing why it formed. A recurring problem at the same location can justify wider cleaning or a camera inspection, particularly where deposits, roots or damaged pipework are suspected.
The useful distinction is between the immediate obstruction and the condition of the pipe. A defect visible after cleaning may need a separate repair decision. Conversely, a repeat complaint from another room may involve the same downstream restriction rather than a new local fault.
Give the maintenance record a location
Room numbers, stack identifiers, chamber labels and the section worked on make the findings usable by the next contractor or facilities colleague. Records that say only “drain cleared” can be difficult to compare when a building has many similar outlets.
Checks after clearance should relate to the affected connections and the accessible part of the system. Any section not reached or not inspected should remain identifiable. These records support decisions about further cleaning, investigation or repair without treating a successful flow check as a survey of the whole network.
Martyn is our technical spokesperson, with particular knowledge of tank cleaning, septic tanks and drainage.