Blocked sink/washing machine waste pipe

smithers1981

Hi in need of advice my washing machine flooded after waste pipe backed up.

Sink that shares pipe been gurgling for a while.

Have tried caustic soda my usual go to but no joy any ideas?

Do sink unblocker liquids from diy stores do any better than caustic soda?

thanks

roddydogs

Assuming its plastic, much better to just dismantle it & clean, unless youve damaged it with cs! Id never use Cs, its a dangerous product.

Norman_Castle

These are good, https://www.screwfix.com/p/sink-bath-unblocker/13894 , available elsewhere if no local Screwfix. Put tape over the overflow before using.
Soda crystals and hot water helps remove grease.

trailingspouse

It sounds like it's blocked with solid gunk (rather than just a build up of grease). You need to get yourself in there - a good old fashioned sink plunger might do the trick. But as previous poster said, dismantle and clean.

smithers1981

dismantled all plastic pipes but blockage further along, had trouble putting pipes back together gonna have to get a man in sadly