Until a professonal replaces or modifies this answer, I'll take a shot at it. From your description of the symptoms, it sounds like you have two problems. The gurgling, spitting "back up" out of the tub and lavatory drains suggest: 1. A significant restriction or near total blockage in the sewer line "downstream" of the toilet and both of those fixtures, and 2. A similar severe restriction or a total blockage in the roof vent system, whose purpose is to prevent pressure built up in the drain system. The few gallons of water involved in the flush take up space [normally only temporarily] in the drain pipe system, and if the venting system is open to the atmosphere, is compensated for by air and sewer gasses being vented to the atmosphere. On the other hand, IF the vent system is blocked, the air pressure buildup in the system causes blow back through the water in the "traps" below the lavatory and tub, which causes the "gurgling and spiting." Hope this helps. j3h.
A mainline stoppage.
Mainline stoppage.
A Plunger
There is a blockage in your main sewerline.
A bathroom is called a bathroom in Ireland. What is meant when you say "Bathroom" in Ireland is a room that has a bath. In some countries, it can mean a room that does not have a bath, but does have a toilet. Some countries are a bit uncomfortable about using the word toilet and so they use the word bathroom even when it does not have a bath in it. There is no problem about using the word toilet in Ireland, so a room without a bath, but with a toilet in Ireland is called a toilet. In Ireland, calling a room a bathroom when it does not have a bath in it, does not make sense. If there is a bath and a toilet in the room, then it is called a bathroom. Even then, someone might say they are going to the toilet, when their intention is to relieve themselves.
the plumbing drain vent is not installed or poorly installed.
In the bathroom. On the toilet
TOILET in a sentence: Go plunge the toilet my dear! Ew, that's gross, there are stains on the toilet! Go use the toilet in the ladies room, Annie.
The clog is below the point where the toilet and the tub join the drain.
You should get your drain lines snaked
It is a Bathroom or a Toilet.
In the bathroom