Concrete blocking a U trap Plastic Pipe

[Muz]

Can anyone tell me how to get rid of concrete trapped in sink where the U pipe is. The pipe is made of plastic, so I might not be able to use any sort of Acid. There is small amounts of water passing through, but too much water can\\\'t pass - and has to go through the overflow pipe.

 

[kevplumb]

change the trap

 

[jobloggs]

Do as Kev says, change trap and dont wash your bucket and trowel in the sink. Use the dishwasher!!!!

 

[Muz]

Would it not be possible to clean it with something like Coustic Soda? or would that damage the plastic?

 

[jobloggs]

Cement paste is an alkaline material so will not be attacked by caustic soda. A strong acid will attack concrete but it will take some time to eat away the cement as well as being dangerous.

A replacement trap is the way to go although if you take the trap off you may be able to dislodge or break up the obstruction.

 

[kevplumb]

the caustic will probably cost more that a new trap

 

[Softus]

the caustic will probably cost more that a new trap

...which is why this just has to be a wind-up.

 

[jobloggs]

Perhaps Softus. But there was a survey in the media yesterday about how poor young 20 year olds were at DIY. They have to rely on parents for basic things like plug changing etc.