Cement-based material washed into a drain during building work, which then sets hard inside the pipe. It is one of the few blockages that jetting alone rarely clears.
What it means for you
Worth checking after any building work, particularly where a builder has rinsed tools into an external gully.
Not sure whether this applies to your property? Ask us. There is no call-out charge and the price is fixed before any work starts.
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