Leak on the pipe / wall junction

[micky59]

Hello all,
I realised yesterday that I now have a massive leak coming from the where the pipe below the sink goes into the wall. Every time water is used (sink, washing machine, dishwasher), it leaks from the junction of the pipe / wall. You can see on the pictures that there is some gross rotten parts.
I think I need to unfold everything, let it dry, clean it, and apply some sort of waterproof coating.
I'm super keen to have your opinion on is that the right thing to do, and if so what coating to I need.
If it is not the right thing to do, what do I need to do, because it doesn't seem that anything is wrong with the pipe system itself.
Many thanks!
Mickael

 

[Deleted member 120897]

Could be that you have a blockage, the jubilee clip has become loose or both.

 

[micky59]

Could be that you have a blockage, the jubilee clip has become loose or both.

Thanks Chris! Would a metal snake brush be appropriate to remove the blockage?

 

[Deleted member 120897]

Thanks Chris! Would a metal snake brush be appropriate to remove the blockage?

It depends on where/how far the blockage is.