A blocked urinal can be caused by scale or other deposits in the waste pipe as well as a local obstruction. Where several urinals are affected, the shared waste pipe may be restricted rather than each fitting being blocked separately.
Blocked Urinal
A blocked urinal can be caused by scale or other deposits in the waste pipe as well as a local obstruction.
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Scale and deposits
Small-bore urinal wastes can narrow gradually as scale and other deposits build up.
Shared waste pipes
Several urinals affected at once can point to a restriction in the pipe they share.
Scale in small-bore urinal waste pipes
Deposits can narrow the bore gradually until the pipe passes light flow but backs up during normal use. Mechanical cleaning equipment needs to suit the diameter and bends, and existing cleaning chemicals affect the precautions required.
Contact us about a blocked urinal
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Checking the fitting and shared waste
After clearance, we test the affected urinal and consider whether deposits continue along the shared pipe. Recurring restrictions may need longer-run cleaning rather than repeated work at the bowl.
Separating drainage faults from flushing faults
Poor flushing or supply problems can also make a urinal perform badly. We distinguish those issues from a blocked waste so the work addresses the actual cause. Maintenance advice should also reflect the type of fitting and products used.
Blocked Urinal: common questions
Can scale contribute to a blocked urinal?
Yes. Scale can narrow the waste pipe and contribute to recurring restrictions.
Can several urinals share one blockage?
Yes. Several fittings may connect to the same restricted waste pipe.
Should waterless urinals receive ordinary drain chemicals?
Products should be compatible with the installed fitting and manufacturer guidance; ordinary drain chemicals should not be assumed suitable.
Does poor flushing always mean the waste is blocked?
No. A water-supply or flushing fault can affect performance and needs separate diagnosis.