We had a new bathroom fitted last year, a friend of my H's did it. Since then we have a problem with water coming through the floor and into our lounge whenever someone has a shower. It's not the shower leaking, it's where water gets onto the floor and then seeps through the floor somewhere.
Who would fix this? Surely a plumber only deals with leaking appliances, not a leaky floor. I'm desperate to get it fixed. We have tried to fix it ourselves and it's better (if you have a low power shower then it doesn't leak) but our downstairs doesn't look good with the water damage and we can't redecorate until this is completely fixed.
Who would deal with this type of thing?
Thanks.