Underneath Bath leak/Bare Floorboards

27col

googler wrote: »

...and get the plumber to fit the overflow properly this time.....

Seriously, if the plumbing work is done properly, there's little need to guard against mishaps like this.

Yes, it's standard practice to have bare flooring below the bath, and tile/lino/carpet up to the edge of the bath panel.

If you spilled the same amount of water in the main area of flooring, all that would happen would be that it would spread out, and spill off the edge of the flooring to run into the cavity below the bathroom floor, and spread out from there. The flooring isn't there to seal the water in, it's for decor only.

Nothing put under a bath is going to prevent the water leaking through onto the ceiling below. Far better to ensure that the plumbing is done correctly in the first place.
I have thought that I ought to put a clip on the overflow pipe to stop any chance of it coming off. I'll get round to it one day.