Leaky soil stack.

[Colin Stamp]

Hi all,

Having opened up the bottom of the box around the soil stack in my downstairs toilet, I was delighted to find everything in there all damp and manky. Peering up inside the box, I can see this:-

untrained eye leads me to suspect a drippy leak in the lowsest (closest in the photo) waste pipe joint :o(

Obviously I need to open up the box near the joint and sort it out, but what's the best plan of attack? I have some Fernox LS-X left over from another job and I'm tempted to just seperate the joint and splurge some in. Is that doomed to fail - especially If I can't quite dry everything out first? Is there another sealer I should be using instead? I really want to avoid replacing the fitting on the stack if I can...

Cheers,

Colin.

[The Medway Handyman]

These fittings often have a ribbed rubber adaptor - maybe thats the problem.

Failing the LS-X is wonderful stuff!

[The Natural Philosopher]

I had similar. Simply kept filling it, wet or dry, with silicone, till it stopped.

[Colin Stamp]

Yep. I've had some of the others apart on this stack in the past. They have an o-ring thing. I've always been impressed that they hadn't leaked either before or after I disturbed them. They've just gone down in my estimation.

That's what I wanted to hear :o)

Cheers,

Colin.

[Colin Stamp]

Sounds promising. I was hoping that water (using the word loosely) wouldn't be too much of a problem for the goop.

Cheers,

Colin.

[Colin Stamp]

I got round to hacking a big hole in the top of the box today and took the offending joint apart. The O-ring looked fine once I'd de-scaled it. I filled its groove with LS-X and pushed the waste pipe back in with more LS-X for good measure. It all looks lovely, but for the fact that it's still weeping. :o(

Now I can see it close-up, it looks like the boss pipe might be cracked where the boss joins it. I'll try more LS-X, but it looks like I might end-up having to replace the boss pipe. Bugger.

Cheers,

Colin.