Blocked 7 metres long kitchen sink drain

[anobium]

The cloakroom sink drain which is blocked goes round 4 corners and meets the kitchen sink drain half way along. Kitchen sink drain empties without any problem. I have tried everything, rodded, but can only get about 3 meters due to various bends, boiling water , high pressure jetting, all to no avail.
I suspect blockage is near or just beyond midway which I can't reach. Is it possible to cut pipe halfway along to rod other half and refit a section of new pipe with an access. Failing that only other way I can see is to renew entire drain.

 

[Murdochcat]

Does it drain at all ?

 

[denso13]

Is it possible to cut pipe halfway along to rod other half and refit a section of new pipe with an access.

If you can get to it, yes, that should work.

 

[anobium]

It will drain the full cloakroom sink if left for half an hour, but if you let it empty and then immediately try and empty another full sink it backs right up. I suspect this is the full amount in the drain pipe.

Does it drain at all ?

 

[anobium]

If you can get to it, yes, that should work.

Thanks, is there a special coupling I should be asking for?

Does it drain at all ?

 

[CBW]

Thanks, is there a special coupling I should be asking for?

If it’s going to be a regular occurrence, if push fit then a push fit coupling, if solvent weld, then a universal coupling would be best.

 

[denso13]

Thanks, is there a special coupling I should be asking for?

What kind/size of pipe is it? Any photos?

 

[anobium]

What kind/size of pipe is it? Any photos?

I think it's inch and a quarter, I'll check tomorrow when it's light and attach some pics

 

[denso13]

If it's 7 metres long then that's part of the problem. It would be far too small.

 

[HERTS P&D]

What do you mean high pressure jetting didn't work?
I bet i could unblock it.

Andy

 

[CBW]

I bet i could unblock it.

With a wet vac and drain snake too

 

[anobium]

What do you mean high pressure jetting didn't work?
I bet i could unblock it.

Andy

Tried with Karcher.

 

[CBW]

Tried with Karcher.

That’s not what jetting companies use, therefore not really classed as high water pressure jetting.

 

[Murdochcat]

It will drain the full cloakroom sink if left for half an hour, but if you let it empty and then immediately try and empty another full sink it backs right up. I suspect this is the full amount in the drain pipe.

Had this exact problem myself, with a similar inaccessible run.

So bought some Mr Muscle , followed the instructions and the problem was sorted

 

[anobium]

If it's 7 metres long then that's part of the problem. It would be far too small.

Just remeasured , it's 50 mm dia, is that ok?
I think I may have found a simple solution to my particular problem.
I intend to drill a 20 mm hole on the top of the waste pipe half way along which will allow me to rod in both directions. If this is successful I will then seal the hole with a rubber plug which are easily obtainable.
If it ever happens again I just need to remove the plug.
There must be a downside, can anybody see one. This will only in my opinion work in horizontal drains not vertical ones for obvious reasons