I live in a house where the living room and kitchen are upstairs and the bedrooms and bathroom are downstairs. The mains water and waste disposal pipes are in the bathroom. The toilet waste goes through a 90 degree bend pipe into the waste pipe in the floor. There is another pipe in the floor close buy which all the waste from the kitchen upstairs, the bath and toilet sink goes into. These pipes are just sealed into the hole in the floor with sealer. We don't have a waster stack either inside or outside the house. I want to remove this rather bodged up effort and connect the pipe work up correctly. We have a problem with a smell after we have used the shower. The smell is coming from this area and is pretty unpleasent. What's the best way to connect all the pipes up properly?
Thanks for any help