Leak from bathroom and water coming through plaster ceiling

I have water seeping through a downstairs toilet plastered ceiling from the bathroom(s) above on the 1st floor. The leak seems to come from the waste drainage pipework from either the toilet and/or shower units as water only appears/drips once the toilets/showers have been used. It cannot be from the water supply pipework as the drips/seepage would be constant. I need someone to remove the downstairs toilet ceiling to expose drainage pipework to determine what the cause of the seepage is but I'm not quite sure who to ask to do this for me . Any suggestions?

2 Answers

A plumber would be the first point of call then you maybe lucky and get a plasterer through the same person to make good again.
9th Nov 2020
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The fact is the drips can come from the water supply pipework if the leak is from the other side of the valve used to turn the water supply on, but a closer examination will identify the location of the leak if it is coming from the water on/off valve, for example, the bath/shower valves are usually located in a different location to the drains in the shower/bath, so look closely to check where the leak is coming from. The exploring work is usually done by a plumber, he should be able to open the ceiling and then fix the leak, you then will need a plasterer/builder to make good the damaged caused to the ceiling, care should be taken at each stage to minimise the repair works and give consideration to the next trades person to follow, this will keep cost down for the customer to a minimum.
14th Nov 2020
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