Fixing a toilet tomorrow in a block of flats. All the toilets have one soil stack which was put in at the wrong height 40 yrs ago. All the soil pipes are too near the floor so the offset required is about 3" over a length of only 7". I wished I could use a flexi but they won't scrunch up enough. Only option is putting two offsets together.
Three other options, build a box behind the cistern to give a better length,
get the owners of the flats to replace the soil stack!!! Not
or do, as one flat has done, sink the toilet into the floor two inches!!!!!!! Deffo Not