by htg engineer »
Wed Feb 11, 2009 9:56 am
Do they have a plug with the current waste grate ?
If they do then it's no different, whether they close a pop-up waste or insert a plug the basin will overflow.
If they insist on the pop-up waste I would explain your concerns, fit the waste grate and leave the pop-up part with them, if they choose to insert it - then that's up to them, if they flood the house it's their problem.
htg