Leak from bathroom upstairs

[fango7]

Hi all, have a leak in landing from upstairs bathroom.

This only happens when sink taps are on, not shower or toilet .

Think it is a boss connection between sink waste to soil pipe.

And think this is happening in corner where toilet is and that is where sink and soil pipe connect

Just want a confirmation if I am on the right lines?

And is it best to access the pipes via ceiling ,lifting tiles ,or was thinking in making a access hole in plaster board near toilet

Was hoping the last option of making hole in plasterboard would allow me access ?

I have attached the pictures of where leak is in landing downstairs

Any advice would be appreciated

 

[Deleted member 120897]

Is that plasterboard next to the toilet or plywood?

 

[fango7]

Hi Chris, it's plasterboard.

 

[fango7]

Is that plasterboard next to the toilet or plywood?

Is that plasterboard next to the toilet or plywood?

Was hoping to cut through the plaster board and make an access point , but not sure if that would give the plumber enough access to the pipes to alter the problem.

If not alternative is lift tiles or go though ceiling, just not sure what is best .

 

[Deleted member 120897]

Easiest might be where the coving is adjacent to the consumer unit, all depends where they’ve connected.

 

[fango7]

Easiest might be where the coving is adjacent to the consumer unit, all depends.

 

[fango7]

Yeah good thinking Chris,when you say coving ,would you recommend that the coving comes off or just the plasterboard underneath coving, for access?

Just to pass onto plumber.

Thank you

 

[Deleted member 120897]

Depends on access, you could try removing the plasterboard 1st, then if the coving is needed it won’t be that difficult

 

[fango7]

Depends on access, you could try removing the plasterboard 1st, then if the coving is needed it won’t be that difficult

Okay thank you Chris, much appreciated, will let you know how we get on!