Levelling Compound in Drain !

[Spinny]

So our flooring contractor has managed to pour floor levelling compound down one of our drains !

We have a rain water drain that is completely blocked at the u-bend.

Other parts of the drain had deposits.

 

Is there any way we might be able to unblock the rain water drain ? Some kind of solvent or acid ?

 

Plumber cleared some from the vertical part of the drain using a very long drill bit, but clearly won't go around a bend.

 

Drain pipe is clay. Levelling compound is Bostik C530 which has fibre reinforcement.

Edited 13 hours ago by Spinny

[Russell griffiths]

Keep it wet, keep the u bend completely full, if you let the air get to it it will harden. 
get a piece of 15 mm hep 2 pipe and ram it around the trap, back and forth 

take detailed timing of how long this takes and charge the flooring contractor 

 

you really are attracting some muppets.