Before you call us
It is worth checking the overflow relief gully before you call - the grated drain outside, usually near the bathroom wall. If it is overflowing, that is the system doing its job, protecting the inside of the house, and it tells us the blockage is in the main sewer line rather than the fixture. Mentioning it on the phone changes what we bring. If more than one fixture is affected, do not keep using the others. Water you put down a sink has to leave somewhere, and with the main line blocked it will find the lowest opening in the house. Turning off the washing machine mid-cycle is worth doing.






















