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Plumbing

blocked soil stack

Anonymous user 09/03/2024 - 3.03 PM

hi one of our internal dining room walls has water leaking in from what we believe is coming from the toilet, a damp specialist came out to the property and said the soil stack was blocked and water was leaking into the cavity wall from the cast iron piping. a drainage company came out and said they couldn't do anything as out carport was obstructing where he needed to insert the camera but he seems to think the pipe inside the cavity wall has come apart that’s why it’s leaking so I’m assuming part of the pipe needs replacing,could this be replaced if the toilet was removed if we cant access from outside?

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4 Answers

NKJJ Maint

Rating: 5 out of 5

Swindon

U can get a company to jet it from the inside with the toilet removed and also we have rod it from the manhole outside but not all times this can be possible all depends on how many bends are in the pipework.

Answered16 July 2019

Balham Engineering

Rating: 4.7 out of 5

Southport

Soil stacks are usually either plastic if new, cast iron if old. Not sure about lead (!). You can try to unblock a pipe from access points at either end: for example, a manhole or as you mentioned by removing the toilet. How to unblock? Try drain rods, I've run up to ten metres of rod. Or some specialist firms use a "snake" or spring coil driven by a drill. You could jet using pressurised water but you may damage the drain fabric with the pressure. It all depends on any bends in the stack and the length of the stack. But if the stack itself is leaking at any point, then curing the blockage won't necessarily stop the leak totally.

Answered16 July 2019

Anonymous user

The soil pipe could be unblocked from inside with the toilet removed, but would require the use of a hundred machine or mini jetter. Use of a jetter internally is risky as there is a chance of flooding.

Answered17 July 2019

Anonymous user

some thing is obviously amiss if water is appearing on the internal wall to start with. if the toilet waste pipe is located inside the cavity wall and has a problem with part of it how could you repair it? what condition is the rest of it in? cheaper and more piece of mind to re route in a new plastic one outside externally on the wall with cleaning eyes job done

Answered19 July 2019