Toilet stack

[lainyneal280164]

so, i have cut the toilet stack that's runs down the middle of my sitting room so I can join in a tee piece. But the inside of the pipe has water dripping from it, ( Quite a lot really) but there's no sign of overflows running or pipes ,/sinks from above leaking into it. The soil stack sops in the loft so no water coming in from rain etc?
Anyone know what this could be?

 

[RrogerD]

so, i have cut the toilet stack that's runs down the middle of my sitting room so I can join in a tee piece. But the inside of the pipe has water dripping from it, ( Quite a lot really) but there's no sign of overflows running or pipes ,/sinks from above leaking into it. The soil stack sops in the loft so no water coming in from rain etc?
Anyone know what this could be?

Condensation? But sounds unlikely if it's actually 'running' with water.
Sounds like you've missed something, an overflow or condensate pipe for example. Maybe something from a water-tank in the loft?
Perhaps go to all of your appliances, boiler, basins, shower, toilet, heating system and trace actually where they do drain into each. If not obvious then maybe this is your cause?

 

[CountryFan]

Dripping tap(s)? As above could have missed an overflow, toilet passing?

 

[Tetrarch]

My vote is for the condensate pipe

Tet

 

[lainyneal280164]

Thanks guys, I'll try all these, I think its a bit much for condensation! I know condensate pipe is on a boiler, and overflows on toilets and sinks is this correct? If overflow in toilet cistern can't you usually hear it?

 

[Notch7]

If overflow in toilet cistern can't you usually hear it?

not always

have a look in the pan and see if you can see any movement or stick some dye in the cistern and see if it comes out in the pan

 

[lainyneal280164]

Good idea!

 

[lainyneal280164]

So ok, its not condensate from boiler that's piped outside. Surely it can't be taps as you'd see it, so its gotta be one of the 2 toilet cisterns ye?

 

[CountryFan]

Surely it can't be taps as you'd see it,

You should if it's dripping

so its gotta be one of the 2 toilet cisterns ye?

Probably yes.

 

[lainyneal280164]

Many thanks everyone. it was running from the cistern back into the pan. My nephew (a plumber) told me to flush toilet dry the pan then stick a piece of toilet paper up near the rim, it should remain dry. It was sodden within a minute.