Soil Stack Leak

[jaypay]

Hi,

I have an old house which originally had the cast iron guttering, and soil stacks, lead pipes etc.
When the house was replumed, the plumber replace the toilet stack with a new pvc one.

He basically cut the origional (which went into the drain) about 4 inchs from the ground, and then put the new stack over the top.
I've now notice that there appears to be a constant dampness beside the stack so can only assume that there is a small trickle continually coming through where the join is not fully sealed.
Is there a product that i could use to almost 'seal' the join (similar to sealant i guess) that should stop this occurring.
It's down the side of the house and we're just about to have it paved so wouldn't want this 'dripping' onto our new path !!

Many Thanks in advance for any assistance.

 

[gasservice85]

the pipe shouldnt go "over the top" you should use one off these


http://www.fernco.com/plumbing/flexible-couplings

or similar available from plumbing and builders merchants

 

[jaypay]

Thanks gasservice
I'll check when I get in. I don't recall their being and metal clips on it !
Are there other fittings that don't use these ?

Maybe I didn't explain to well
The stack goes onto an almost junction, which sits over the original.

Assuming it's wrong (was a dodgy builder who liked cutting corners so wouldn't be surprised if it is) will the whole stack have to come down to replace ?

 

[gasservice85]

i assumed from your post that the new plastic pipe has been fitted over the old pipe (remaing 4 inches) this would not be an acceptable joint.

as far as i am aware this is the only type of fitting that you would use to connect to cast iron/pitch fibre/clay etc the jubilee clips allow a range of different size pipes to be connected.

if it is connected as i assume the pipe will need to be cut above the cast iron and fit this one it may not be very easy to do dependant on space and movement in pipework anyhow i would suggest you either ask the builder to check/correct his work or employ someone else to check/correct this is not really a job for the DIYer and you probably dont want to get covered in S**T