I have a small downstairs WC and just today the toilet and sink do not empty. Whenever we flush an upstairs toilet both the loo and sink downstairs gurgle and splutter like a bad case of indigestion, but the level of water never goes down (always half-ish full). The upstairs toilets have no problem.
Any ideas what this may be and what I should do? Thanks in advance
Any ideas what this may be and what I should do? Thanks in advance