Flooded Sshower tray, shared wastes and cowboy plumbers....

[theskiingbear]

Fairly newly installed shower tray in our ensuite has started to fill with water when we use it. This started 2 days ago since our plumbers connected the bath in our main bathroom. Up to that point the drainage didnt seem too bad, but now the water is filling up the whole tray, we dont understand why this has just started to happen. The waste from our ensuite is connected to/feeds into the waste in our main bathroom and as I said, the bath waste has just been connected. We have had other issues with the plumbing with this crowd of labourers eg toilet leaking from base (toilet to blame...now fixed though) and bath waste leaking (to be fixed). We dont see how the bath being connected up to the waste in the main bathroom could be related to the shower tray drainage issue but hoping one of you experts can shed some light?

We are due to have our ensuite shower removed and refitted as the wall tiling is a dogs dinner but the floor in our main bathroom has just been laid and the ensuite floor is not being lifted. We can only access the ensuite shower waste from our kitchen ceiling. There is a hole in the ceiling at the moment (dont ask) so we can see the ensuite shower waste if that has any bearing.

By the way we have a mega flow.

 

[theskiingbear]

is your basin into shower waste.
If so, run your basin fast and see if it fills up shower. Give it a bit of time to find out.

The shower runs into the basin waste

 

[tipintim]

ok. What i would do is.....
Disconect basin waste ( take the trap off ) and empty it down the shower.

Then you have an open end (i.e basin waste pipe ) acting as a vent

Then i would run your shower to see of it fills up as before.

If it fills up, your pipe is running up, bellied or blocked.
If it dont fill up you need to fit some sort of vent.

 

[theskiingbear]

How does the bath drain away? When the bath was plumbed in the waste pipe angle may have been altered. Is the en-suite drainage on the end of the run?

A photo would help if you have one.

Joy of joys I've found photos of the plumbing before it was redone. I'll uplodad them

 

[Avatar]

sounds suspect - a basin into a shower or bath waste is very common, but what do you mean the wastes for the 2 bathrooms are joined? Each bath/shower should have a seperate run of pipe to the soil stack, if not you are going to be in world of trouble.

Further investigation (and description) may be required . . .