Hi all
Our downstairs cloakroom has developed a blockage and I'm having trouble determining exactly where the problem is. The cloakroom has a WC, sink and shower cubicle and the first sign of a problem was the WC filling to the brim on flushing and taking a long while to drop back to the normal level. I tried plunging a few times and thought I'd sorted the problem but one day later and the same thing is happening. I suspected a blocked U bend so fished around with my hand but couldn't find anyhting. Next I left the sink taps running and eventually water started to bubble up through the shower drain so presumably definitely a blockage in the pipework somewhere.
Problem is I'm a bit confused by the plumbing arrangement. The shower and sink are obviously connected to the same drain and this runs out of the external wall and down into the ground. However on pulling out the WC the waste pipe makes an immediate 90 degree bend as soon as it is below ground level and then appears to run in the opposite direction to the waste ?? I've put a rough pic of the set up here
The upstairs bathroom and kitchen are at the back of the house (cloakroom is at the front) and there doesn't appear to be any problems there.
Thanks
Jim