Really strong drain clearer wanted

[otolith]

Be careful - don't get it anywhere you don't need to, it's evil stuff.

[Uncle John]

Had this at the weekend, bathroom sink finally got to the stage where I've seen glaciers move faster than the sink was draining.

Had all the pipework apart, nothing obvious which meant the blockage was "Somewhere" in the waste pipework.

Got a 3 metre length of what looks like coiled spring form the local hardware shop for a fiver and fed it down, twisted it to get it around the corners as far as it would go. Didn't really feel anything but it came back up with some crud on the end. Tested the water and it had worked, blockage gone and a free draining sink.

We had also used the supermarket sink unblockers but these were only temporary fixes.

[Risotto]

Of course there's always this...

http://youtu.be/t2UY_3RNggU

[BlackZeD]

PLEASE BE VERY AWARE THAT IF YOU USE ONE SHOT THAT THERE ARE NO
METAL PARTS IN YOUR SYSTEM.
IT WILL EAT ANY METAL, CHROME ETC THAT IT COMES INTO CONTACT WITH.

THAT MEANS BIG BILLS IF YOUR OUTSIDE PIPES ARE CAST.

[Thankyou4calling]

Thanks for the advice.

I used caustic soda crystals and they worked a treat.

All now running well.

[ladderino]

Just to add my tuppence worth - careful if anyone is thinking of using a high pressure unblocker. I bought this from Screwfix - http://www.screwfix.com/p/professional-power-plung... - to fix a slow running shower.

It did the trick brilliantly: my wife had just had a shower and the water level was about to spill over the side of the shower tray. Out came the power plunger, which cleared the blockage immediately, so I then had a lovely warm shower.

I then came downstairs thinking 'wow, it's raining hard outside', to actually find it was raining inside. Instead of clearing the blockage, the power plunger had instead blown the pipes apart.

I now just use a wet and dry vacuum cleaner whenever we get a blockage. Works a treat but smells horrible.

[Hoofy]

Feck!